12 files changed, 13190 insertions, 0 deletions
diff --git a/dist/system-csp-production.js b/dist/system-csp-production.js
new file mode 100644
index 000000000..048a1e192
--- /dev/null
+++ b/dist/system-csp-production.js
@@ -0,0 +1,6 @@
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+\ No newline at end of file
diff --git a/dist/system-csp-production.src.js b/dist/system-csp-production.src.js
new file mode 100644
index 000000000..9c5e56532
--- /dev/null
+++ b/dist/system-csp-production.src.js
@@ -0,0 +1,4536 @@
+/*
+ * SystemJS v0.19.39
+ */
+(function() {
+function bootstrap() {// from https://gist.github.com/Yaffle/1088850
+(function(global) {
+function URLPolyfill(url, baseURL) {
+  if (typeof url != 'string')
+    throw new TypeError('URL must be a string');
+  var m = String(url).replace(/^\s+|\s+$/g, "").match(/^([^:\/?#]+:)?(?:\/\/(?:([^:@\/?#]*)(?::([^:@\/?#]*))?@)?(([^:\/?#]*)(?::(\d*))?))?([^?#]*)(\?[^#]*)?(#[\s\S]*)?/);
+  if (!m)
+    throw new RangeError('Invalid URL format');
+  var protocol = m[1] || "";
+  var username = m[2] || "";
+  var password = m[3] || "";
+  var host = m[4] || "";
+  var hostname = m[5] || "";
+  var port = m[6] || "";
+  var pathname = m[7] || "";
+  var search = m[8] || "";
+  var hash = m[9] || "";
+  if (baseURL !== undefined) {
+    var base = baseURL instanceof URLPolyfill ? baseURL : new URLPolyfill(baseURL);
+    var flag = !protocol && !host && !username;
+    if (flag && !pathname && !search)
+      search = base.search;
+    if (flag && pathname[0] !== "/")
+      pathname = (pathname ? (((base.host || base.username) && !base.pathname ? "/" : "") + base.pathname.slice(0, base.pathname.lastIndexOf("/") + 1) + pathname) : base.pathname);
+    // dot segments removal
+    var output = [];
+    pathname.replace(/^(\.\.?(\/|$))+/, "")
+      .replace(/\/(\.(\/|$))+/g, "/")
+      .replace(/\/\.\.$/, "/../")
+      .replace(/\/?[^\/]*/g, function (p) {
+        if (p === "/..")
+          output.pop();
+        else
+          output.push(p);
+      });
+    pathname = output.join("").replace(/^\//, pathname[0] === "/" ? "/" : "");
+    if (flag) {
+      port = base.port;
+      hostname = base.hostname;
+      host = base.host;
+      password = base.password;
+      username = base.username;
+    }
+    if (!protocol)
+      protocol = base.protocol;
+  }
+
+  // convert URLs to use / always
+  pathname = pathname.replace(/\\/g, '/');
+
+  this.origin = host ? protocol + (protocol !== "" || host !== "" ? "//" : "") + host : "";
+  this.href = protocol + (protocol && host || protocol == "file:" ? "//" : "") + (username !== "" ? username + (password !== "" ? ":" + password : "") + "@" : "") + host + pathname + search + hash;
+  this.protocol = protocol;
+  this.username = username;
+  this.password = password;
+  this.host = host;
+  this.hostname = hostname;
+  this.port = port;
+  this.pathname = pathname;
+  this.search = search;
+  this.hash = hash;
+}
+global.URLPolyfill = URLPolyfill;
+})(typeof self != 'undefined' ? self : global);(function(__global) {
+
+  var isWorker = typeof window == 'undefined' && typeof self != 'undefined' && typeof importScripts != 'undefined';
+  var isBrowser = typeof window != 'undefined' && typeof document != 'undefined';
+  var isWindows = typeof process != 'undefined' && typeof process.platform != 'undefined' && !!process.platform.match(/^win/);
+
+  if (!__global.console)
+    __global.console = { assert: function() {} };
+
+  // IE8 support
+  var indexOf = Array.prototype.indexOf || function(item) {
+    for (var i = 0, thisLen = this.length; i < thisLen; i++) {
+      if (this[i] === item) {
+        return i;
+      }
+    }
+    return -1;
+  };
+  
+  var defineProperty;
+  (function () {
+    try {
+      if (!!Object.defineProperty({}, 'a', {}))
+        defineProperty = Object.defineProperty;
+    }
+    catch (e) {
+      defineProperty = function(obj, prop, opt) {
+        try {
+          obj[prop] = opt.value || opt.get.call(obj);
+        }
+        catch(e) {}
+      }
+    }
+  })();
+
+  var errArgs = new Error(0, '_').fileName == '_';
+
+  function addToError(err, msg) {
+    // parse the stack removing loader code lines for simplification
+    if (!err.originalErr) {
+      var stack = ((err.message || err) + (err.stack ? '\n' + err.stack : '')).toString().split('\n');
+      var newStack = [];
+      for (var i = 0; i < stack.length; i++) {
+        if (typeof $__curScript == 'undefined' || stack[i].indexOf($__curScript.src) == -1)
+          newStack.push(stack[i]);
+      }
+    }
+
+    var newMsg = '(SystemJS) ' + (newStack ? newStack.join('\n\t') : err.message.substr(11)) + '\n\t' + msg;
+
+    // Convert file:/// URLs to paths in Node
+    if (!isBrowser)
+      newMsg = newMsg.replace(isWindows ? /file:\/\/\//g : /file:\/\//g, '');
+
+    var newErr = errArgs ? new Error(newMsg, err.fileName, err.lineNumber) : new Error(newMsg);
+    
+    newErr.stack = newMsg;
+        
+    // track the original error
+    newErr.originalErr = err.originalErr || err;
+
+    return newErr;
+  }
+
+  function __eval(source, debugName, context) {
+    try {
+      new Function(source).call(context);
+    }
+    catch(e) {
+      throw addToError(e, 'Evaluating ' + debugName);
+    }
+  }
+
+  var baseURI;
+
+  // environent baseURI detection
+  if (typeof document != 'undefined' && document.getElementsByTagName) {
+    baseURI = document.baseURI;
+
+    if (!baseURI) {
+      var bases = document.getElementsByTagName('base');
+      baseURI = bases[0] && bases[0].href || window.location.href;
+    }
+  }
+  else if (typeof location != 'undefined') {
+    baseURI = __global.location.href;
+  }
+
+  // sanitize out the hash and querystring
+  if (baseURI) {
+    baseURI = baseURI.split('#')[0].split('?')[0];
+    baseURI = baseURI.substr(0, baseURI.lastIndexOf('/') + 1);
+  }
+  else if (typeof process != 'undefined' && process.cwd) {
+    baseURI = 'file://' + (isWindows ? '/' : '') + process.cwd() + '/';
+    if (isWindows)
+      baseURI = baseURI.replace(/\\/g, '/');
+  }
+  else {
+    throw new TypeError('No environment baseURI');
+  }
+
+  try {
+    var nativeURL = new __global.URL('test:///').protocol == 'test:';
+  }
+  catch(e) {}
+
+  var URL = nativeURL ? __global.URL : __global.URLPolyfill;
+
+/*
+*********************************************************************************************
+
+  Dynamic Module Loader Polyfill
+
+    - Implemented exactly to the former 2014-08-24 ES6 Specification Draft Rev 27, Section 15
+      http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts#august_24_2014_draft_rev_27
+
+    - Functions are commented with their spec numbers, with spec differences commented.
+
+    - Spec bugs are commented in this code with links.
+
+    - Abstract functions have been combined where possible, and their associated functions
+      commented.
+
+    - Realm implementation is entirely omitted.
+
+*********************************************************************************************
+*/
+
+function Module() {}
+// http://www.ecma-international.org/ecma-262/6.0/#sec-@@tostringtag
+defineProperty(Module.prototype, 'toString', {
+  value: function() {
+    return 'Module';
+  }
+});
+function Loader(options) {
+  this._loader = {
+    loaderObj: this,
+    loads: [],
+    modules: {},
+    importPromises: {},
+    moduleRecords: {}
+  };
+
+  // 26.3.3.6
+  defineProperty(this, 'global', {
+    get: function() {
+      return __global;
+    }
+  });
+
+  // 26.3.3.13 realm not implemented
+}
+
+(function() {
+
+// Some Helpers
+
+// logs a linkset snapshot for debugging
+/* function snapshot(loader) {
+  console.log('---Snapshot---');
+  for (var i = 0; i < loader.loads.length; i++) {
+    var load = loader.loads[i];
+    var linkSetLog = '  ' + load.name + ' (' + load.status + '): ';
+
+    for (var j = 0; j < load.linkSets.length; j++) {
+      linkSetLog += '{' + logloads(load.linkSets[j].loads) + '} ';
+    }
+    console.log(linkSetLog);
+  }
+  console.log('');
+}
+function logloads(loads) {
+  var log = '';
+  for (var k = 0; k < loads.length; k++)
+    log += loads[k].name + (k != loads.length - 1 ? ' ' : '');
+  return log;
+} */
+
+
+/* function checkInvariants() {
+  // see https://bugs.ecmascript.org/show_bug.cgi?id=2603#c1
+
+  var loads = System._loader.loads;
+  var linkSets = [];
+
+  for (var i = 0; i < loads.length; i++) {
+    var load = loads[i];
+    console.assert(load.status == 'loading' || load.status == 'loaded', 'Each load is loading or loaded');
+
+    for (var j = 0; j < load.linkSets.length; j++) {
+      var linkSet = load.linkSets[j];
+
+      for (var k = 0; k < linkSet.loads.length; k++)
+        console.assert(loads.indexOf(linkSet.loads[k]) != -1, 'linkSet loads are a subset of loader loads');
+
+      if (linkSets.indexOf(linkSet) == -1)
+        linkSets.push(linkSet);
+    }
+  }
+
+  for (var i = 0; i < loads.length; i++) {
+    var load = loads[i];
+    for (var j = 0; j < linkSets.length; j++) {
+      var linkSet = linkSets[j];
+
+      if (linkSet.loads.indexOf(load) != -1)
+        console.assert(load.linkSets.indexOf(linkSet) != -1, 'linkSet contains load -> load contains linkSet');
+
+      if (load.linkSets.indexOf(linkSet) != -1)
+        console.assert(linkSet.loads.indexOf(load) != -1, 'load contains linkSet -> linkSet contains load');
+    }
+  }
+
+  for (var i = 0; i < linkSets.length; i++) {
+    var linkSet = linkSets[i];
+    for (var j = 0; j < linkSet.loads.length; j++) {
+      var load = linkSet.loads[j];
+
+      for (var k = 0; k < load.dependencies.length; k++) {
+        var depName = load.dependencies[k].value;
+        var depLoad;
+        for (var l = 0; l < loads.length; l++) {
+          if (loads[l].name != depName)
+            continue;
+          depLoad = loads[l];
+          break;
+        }
+
+        // loading records are allowed not to have their dependencies yet
+        // if (load.status != 'loading')
+        //  console.assert(depLoad, 'depLoad found');
+
+        // console.assert(linkSet.loads.indexOf(depLoad) != -1, 'linkset contains all dependencies');
+      }
+    }
+  }
+} */
+
+  // 15.2.3 - Runtime Semantics: Loader State
+
+  // 15.2.3.11
+  function createLoaderLoad(object) {
+    return {
+      // modules is an object for ES5 implementation
+      modules: {},
+      loads: [],
+      loaderObj: object
+    };
+  }
+
+  // 15.2.3.2 Load Records and LoadRequest Objects
+
+  var anonCnt = 0;
+
+  // 15.2.3.2.1
+  function createLoad(name) {
+    return {
+      status: 'loading',
+      name: name || '<Anonymous' + ++anonCnt + '>',
+      linkSets: [],
+      dependencies: [],
+      metadata: {}
+    };
+  }
+
+  // 15.2.3.2.2 createLoadRequestObject, absorbed into calling functions
+
+  // 15.2.4
+
+  // 15.2.4.1
+  function loadModule(loader, name, options) {
+    return new Promise(asyncStartLoadPartwayThrough({
+      step: options.address ? 'fetch' : 'locate',
+      loader: loader,
+      moduleName: name,
+      // allow metadata for import https://bugs.ecmascript.org/show_bug.cgi?id=3091
+      moduleMetadata: options && options.metadata || {},
+      moduleSource: options.source,
+      moduleAddress: options.address
+    }));
+  }
+
+  // 15.2.4.2
+  function requestLoad(loader, request, refererName, refererAddress) {
+    // 15.2.4.2.1 CallNormalize
+    return new Promise(function(resolve, reject) {
+      resolve(loader.loaderObj.normalize(request, refererName, refererAddress));
+    })
+    // 15.2.4.2.2 GetOrCreateLoad
+    .then(function(name) {
+      var load;
+      if (loader.modules[name]) {
+        load = createLoad(name);
+        load.status = 'linked';
+        // https://bugs.ecmascript.org/show_bug.cgi?id=2795
+        load.module = loader.modules[name];
+        return load;
+      }
+
+      for (var i = 0, l = loader.loads.length; i < l; i++) {
+        load = loader.loads[i];
+        if (load.name != name)
+          continue;
+        return load;
+      }
+
+      load = createLoad(name);
+      loader.loads.push(load);
+
+      proceedToLocate(loader, load);
+
+      return load;
+    });
+  }
+
+  // 15.2.4.3
+  function proceedToLocate(loader, load) {
+    proceedToFetch(loader, load,
+      Promise.resolve()
+      // 15.2.4.3.1 CallLocate
+      .then(function() {
+        return loader.loaderObj.locate({ name: load.name, metadata: load.metadata });
+      })
+    );
+  }
+
+  // 15.2.4.4
+  function proceedToFetch(loader, load, p) {
+    proceedToTranslate(loader, load,
+      p
+      // 15.2.4.4.1 CallFetch
+      .then(function(address) {
+        // adjusted, see https://bugs.ecmascript.org/show_bug.cgi?id=2602
+        if (load.status != 'loading')
+          return;
+        load.address = address;
+
+        return loader.loaderObj.fetch({ name: load.name, metadata: load.metadata, address: address });
+      })
+    );
+  }
+
+  // 15.2.4.5
+  function proceedToTranslate(loader, load, p) {
+    p
+    // 15.2.4.5.1 CallTranslate
+    .then(function(source) {
+      if (load.status != 'loading')
+        return;
+
+      load.address = load.address || load.name;
+
+      return Promise.resolve(loader.loaderObj.translate({ name: load.name, metadata: load.metadata, address: load.address, source: source }))
+
+      // 15.2.4.5.2 CallInstantiate
+      .then(function(source) {
+        load.source = source;
+        return loader.loaderObj.instantiate({ name: load.name, metadata: load.metadata, address: load.address, source: source });
+      })
+
+      // 15.2.4.5.3 InstantiateSucceeded
+      .then(function(instantiateResult) {
+        if (instantiateResult === undefined)
+          throw new TypeError('Declarative modules unsupported in the polyfill.');
+        
+        if (typeof instantiateResult != 'object')
+          throw new TypeError('Invalid instantiate return value');
+
+        load.depsList = instantiateResult.deps || [];
+        load.execute = instantiateResult.execute;
+      })
+      // 15.2.4.6 ProcessLoadDependencies
+      .then(function() {
+        load.dependencies = [];
+        var depsList = load.depsList;
+
+        var loadPromises = [];
+        for (var i = 0, l = depsList.length; i < l; i++) (function(request, index) {
+          loadPromises.push(
+            requestLoad(loader, request, load.name, load.address)
+
+            // 15.2.4.6.1 AddDependencyLoad (load is parentLoad)
+            .then(function(depLoad) {
+
+              // adjusted from spec to maintain dependency order
+              // this is due to the System.register internal implementation needs
+              load.dependencies[index] = {
+                key: request,
+                value: depLoad.name
+              };
+
+              if (depLoad.status != 'linked') {
+                var linkSets = load.linkSets.concat([]);
+                for (var i = 0, l = linkSets.length; i < l; i++)
+                  addLoadToLinkSet(linkSets[i], depLoad);
+              }
+
+              // console.log('AddDependencyLoad ' + depLoad.name + ' for ' + load.name);
+              // snapshot(loader);
+            })
+          );
+        })(depsList[i], i);
+
+        return Promise.all(loadPromises);
+      })
+
+      // 15.2.4.6.2 LoadSucceeded
+      .then(function() {
+        // console.log('LoadSucceeded ' + load.name);
+        // snapshot(loader);
+
+        load.status = 'loaded';
+
+        var linkSets = load.linkSets.concat([]);
+        for (var i = 0, l = linkSets.length; i < l; i++)
+          updateLinkSetOnLoad(linkSets[i], load);
+      });
+    })
+    // 15.2.4.5.4 LoadFailed
+    ['catch'](function(exc) {
+      load.status = 'failed';
+      load.exception = exc;
+
+      var linkSets = load.linkSets.concat([]);
+      for (var i = 0, l = linkSets.length; i < l; i++) {
+        linkSetFailed(linkSets[i], load, exc);
+      }
+
+      console.assert(load.linkSets.length == 0, 'linkSets not removed');
+    });
+  }
+
+  // 15.2.4.7 PromiseOfStartLoadPartwayThrough absorbed into calling functions
+
+  // 15.2.4.7.1
+  function asyncStartLoadPartwayThrough(stepState) {
+    return function(resolve, reject) {
+      var loader = stepState.loader;
+      var name = stepState.moduleName;
+      var step = stepState.step;
+
+      if (loader.modules[name])
+        throw new TypeError('"' + name + '" already exists in the module table');
+
+      // adjusted to pick up existing loads
+      var existingLoad;
+      for (var i = 0, l = loader.loads.length; i < l; i++) {
+        if (loader.loads[i].name == name) {
+          existingLoad = loader.loads[i];
+
+          if (step == 'translate' && !existingLoad.source) {
+            existingLoad.address = stepState.moduleAddress;
+            proceedToTranslate(loader, existingLoad, Promise.resolve(stepState.moduleSource));
+          }
+
+          // a primary load -> use that existing linkset if it is for the direct load here
+          // otherwise create a new linkset unit
+          if (existingLoad.linkSets.length && existingLoad.linkSets[0].loads[0].name == existingLoad.name)
+            return existingLoad.linkSets[0].done.then(function() {
+              resolve(existingLoad);
+            });
+        }
+      }
+
+      var load = existingLoad || createLoad(name);
+
+      load.metadata = stepState.moduleMetadata;
+
+      var linkSet = createLinkSet(loader, load);
+
+      loader.loads.push(load);
+
+      resolve(linkSet.done);
+
+      if (step == 'locate')
+        proceedToLocate(loader, load);
+
+      else if (step == 'fetch')
+        proceedToFetch(loader, load, Promise.resolve(stepState.moduleAddress));
+
+      else {
+        console.assert(step == 'translate', 'translate step');
+        load.address = stepState.moduleAddress;
+        proceedToTranslate(loader, load, Promise.resolve(stepState.moduleSource));
+      }
+    }
+  }
+
+  // Declarative linking functions run through alternative implementation:
+  // 15.2.5.1.1 CreateModuleLinkageRecord not implemented
+  // 15.2.5.1.2 LookupExport not implemented
+  // 15.2.5.1.3 LookupModuleDependency not implemented
+
+  // 15.2.5.2.1
+  function createLinkSet(loader, startingLoad) {
+    var linkSet = {
+      loader: loader,
+      loads: [],
+      startingLoad: startingLoad, // added see spec bug https://bugs.ecmascript.org/show_bug.cgi?id=2995
+      loadingCount: 0
+    };
+    linkSet.done = new Promise(function(resolve, reject) {
+      linkSet.resolve = resolve;
+      linkSet.reject = reject;
+    });
+    addLoadToLinkSet(linkSet, startingLoad);
+    return linkSet;
+  }
+  // 15.2.5.2.2
+  function addLoadToLinkSet(linkSet, load) {
+    if (load.status == 'failed')
+      return;
+
+    for (var i = 0, l = linkSet.loads.length; i < l; i++)
+      if (linkSet.loads[i] == load)
+        return;
+
+    linkSet.loads.push(load);
+    load.linkSets.push(linkSet);
+
+    // adjustment, see https://bugs.ecmascript.org/show_bug.cgi?id=2603
+    if (load.status != 'loaded') {
+      linkSet.loadingCount++;
+    }
+
+    var loader = linkSet.loader;
+
+    for (var i = 0, l = load.dependencies.length; i < l; i++) {
+      if (!load.dependencies[i])
+        continue;
+
+      var name = load.dependencies[i].value;
+
+      if (loader.modules[name])
+        continue;
+
+      for (var j = 0, d = loader.loads.length; j < d; j++) {
+        if (loader.loads[j].name != name)
+          continue;
+
+        addLoadToLinkSet(linkSet, loader.loads[j]);
+        break;
+      }
+    }
+    // console.log('add to linkset ' + load.name);
+    // snapshot(linkSet.loader);
+  }
+
+  // linking errors can be generic or load-specific
+  // this is necessary for debugging info
+  function doLink(linkSet) {
+    var error = false;
+    try {
+      link(linkSet, function(load, exc) {
+        linkSetFailed(linkSet, load, exc);
+        error = true;
+      });
+    }
+    catch(e) {
+      linkSetFailed(linkSet, null, e);
+      error = true;
+    }
+    return error;
+  }
+
+  // 15.2.5.2.3
+  function updateLinkSetOnLoad(linkSet, load) {
+    // console.log('update linkset on load ' + load.name);
+    // snapshot(linkSet.loader);
+
+    console.assert(load.status == 'loaded' || load.status == 'linked', 'loaded or linked');
+
+    linkSet.loadingCount--;
+
+    if (linkSet.loadingCount > 0)
+      return;
+
+    // adjusted for spec bug https://bugs.ecmascript.org/show_bug.cgi?id=2995
+    var startingLoad = linkSet.startingLoad;
+
+    // non-executing link variation for loader tracing
+    // on the server. Not in spec.
+    /***/
+    if (linkSet.loader.loaderObj.execute === false) {
+      var loads = [].concat(linkSet.loads);
+      for (var i = 0, l = loads.length; i < l; i++) {
+        var load = loads[i];
+        load.module = {
+          name: load.name,
+          module: _newModule({}),
+          evaluated: true
+        };
+        load.status = 'linked';
+        finishLoad(linkSet.loader, load);
+      }
+      return linkSet.resolve(startingLoad);
+    }
+    /***/
+
+    var abrupt = doLink(linkSet);
+
+    if (abrupt)
+      return;
+
+    console.assert(linkSet.loads.length == 0, 'loads cleared');
+
+    linkSet.resolve(startingLoad);
+  }
+
+  // 15.2.5.2.4
+  function linkSetFailed(linkSet, load, exc) {
+    var loader = linkSet.loader;
+    var requests;
+
+    checkError: 
+    if (load) {
+      if (linkSet.loads[0].name == load.name) {
+        exc = addToError(exc, 'Error loading ' + load.name);
+      }
+      else {
+        for (var i = 0; i < linkSet.loads.length; i++) {
+          var pLoad = linkSet.loads[i];
+          for (var j = 0; j < pLoad.dependencies.length; j++) {
+            var dep = pLoad.dependencies[j];
+            if (dep.value == load.name) {
+              exc = addToError(exc, 'Error loading ' + load.name + ' as "' + dep.key + '" from ' + pLoad.name);
+              break checkError;
+            }
+          }
+        }
+        exc = addToError(exc, 'Error loading ' + load.name + ' from ' + linkSet.loads[0].name);
+      }
+    }
+    else {
+      exc = addToError(exc, 'Error linking ' + linkSet.loads[0].name);
+    }
+
+
+    var loads = linkSet.loads.concat([]);
+    for (var i = 0, l = loads.length; i < l; i++) {
+      var load = loads[i];
+
+      // store all failed load records
+      loader.loaderObj.failed = loader.loaderObj.failed || [];
+      if (indexOf.call(loader.loaderObj.failed, load) == -1)
+        loader.loaderObj.failed.push(load);
+
+      var linkIndex = indexOf.call(load.linkSets, linkSet);
+      console.assert(linkIndex != -1, 'link not present');
+      load.linkSets.splice(linkIndex, 1);
+      if (load.linkSets.length == 0) {
+        var globalLoadsIndex = indexOf.call(linkSet.loader.loads, load);
+        if (globalLoadsIndex != -1)
+          linkSet.loader.loads.splice(globalLoadsIndex, 1);
+      }
+    }
+    linkSet.reject(exc);
+  }
+
+  // 15.2.5.2.5
+  function finishLoad(loader, load) {
+    // add to global trace if tracing
+    if (loader.loaderObj.trace) {
+      if (!loader.loaderObj.loads)
+        loader.loaderObj.loads = {};
+      var depMap = {};
+      load.dependencies.forEach(function(dep) {
+        depMap[dep.key] = dep.value;
+      });
+      loader.loaderObj.loads[load.name] = {
+        name: load.name,
+        deps: load.dependencies.map(function(dep){ return dep.key }),
+        depMap: depMap,
+        address: load.address,
+        metadata: load.metadata,
+        source: load.source
+      };
+    }
+    // if not anonymous, add to the module table
+    if (load.name) {
+      console.assert(!loader.modules[load.name] || loader.modules[load.name].module === load.module.module, 'load not in module table');
+      loader.modules[load.name] = load.module;
+    }
+    var loadIndex = indexOf.call(loader.loads, load);
+    if (loadIndex != -1)
+      loader.loads.splice(loadIndex, 1);
+    for (var i = 0, l = load.linkSets.length; i < l; i++) {
+      loadIndex = indexOf.call(load.linkSets[i].loads, load);
+      if (loadIndex != -1)
+        load.linkSets[i].loads.splice(loadIndex, 1);
+    }
+    load.linkSets.splice(0, load.linkSets.length);
+  }
+
+  function doDynamicExecute(linkSet, load, linkError) {
+    try {
+      var module = load.execute();
+    }
+    catch(e) {
+      linkError(load, e);
+      return;
+    }
+    if (!module || !(module instanceof Module))
+      linkError(load, new TypeError('Execution must define a Module instance'));
+    else
+      return module;
+  }
+
+  // 26.3 Loader
+
+  // 26.3.1.1
+  // defined at top
+
+  // importPromises adds ability to import a module twice without error - https://bugs.ecmascript.org/show_bug.cgi?id=2601
+  function createImportPromise(loader, name, promise) {
+    var importPromises = loader._loader.importPromises;
+    return importPromises[name] = promise.then(function(m) {
+      importPromises[name] = undefined;
+      return m;
+    }, function(e) {
+      importPromises[name] = undefined;
+      throw e;
+    });
+  }
+
+  Loader.prototype = {
+    // 26.3.3.1
+    constructor: Loader,
+    // 26.3.3.2
+    define: function(name, source, options) {
+      // check if already defined
+      if (this._loader.importPromises[name])
+        throw new TypeError('Module is already loading.');
+      return createImportPromise(this, name, new Promise(asyncStartLoadPartwayThrough({
+        step: 'translate',
+        loader: this._loader,
+        moduleName: name,
+        moduleMetadata: options && options.metadata || {},
+        moduleSource: source,
+        moduleAddress: options && options.address
+      })));
+    },
+    // 26.3.3.3
+    'delete': function(name) {
+      var loader = this._loader;
+      delete loader.importPromises[name];
+      delete loader.moduleRecords[name];
+      return loader.modules[name] ? delete loader.modules[name] : false;
+    },
+    // 26.3.3.4 entries not implemented
+    // 26.3.3.5
+    get: function(key) {
+      if (!this._loader.modules[key])
+        return;
+      return this._loader.modules[key].module;
+    },
+    // 26.3.3.7
+    has: function(name) {
+      return !!this._loader.modules[name];
+    },
+    // 26.3.3.8
+    'import': function(name, parentName, parentAddress) {
+      if (typeof parentName == 'object')
+        parentName = parentName.name;
+
+      // run normalize first
+      var loaderObj = this;
+
+      // added, see https://bugs.ecmascript.org/show_bug.cgi?id=2659
+      return Promise.resolve(loaderObj.normalize(name, parentName))
+      .then(function(name) {
+        var loader = loaderObj._loader;
+
+        if (loader.modules[name])
+          return loader.modules[name].module;
+
+        return loader.importPromises[name] || createImportPromise(loaderObj, name,
+          loadModule(loader, name, {})
+          .then(function(load) {
+            delete loader.importPromises[name];
+            return load.module.module;
+          }));
+      });
+    },
+    // 26.3.3.9 keys not implemented
+    // 26.3.3.10
+    load: function(name) {
+      var loader = this._loader;
+      if (loader.modules[name])
+        return Promise.resolve();
+      return loader.importPromises[name] || createImportPromise(this, name, new Promise(asyncStartLoadPartwayThrough({
+        step: 'locate',
+        loader: loader,
+        moduleName: name,
+        moduleMetadata: {},
+        moduleSource: undefined,
+        moduleAddress: undefined
+      }))
+      .then(function() {
+        delete loader.importPromises[name];
+      }));
+    },
+    // 26.3.3.11
+    module: function(source, options) {
+      var load = createLoad();
+      load.address = options && options.address;
+      var linkSet = createLinkSet(this._loader, load);
+      var sourcePromise = Promise.resolve(source);
+      var loader = this._loader;
+      var p = linkSet.done.then(function() {
+        return load.module.module;
+      });
+      proceedToTranslate(loader, load, sourcePromise);
+      return p;
+    },
+    // 26.3.3.12
+    newModule: function (obj) {
+      if (typeof obj != 'object')
+        throw new TypeError('Expected object');
+
+      var m = new Module();
+
+      var pNames = [];
+      if (Object.getOwnPropertyNames && obj != null)
+        pNames = Object.getOwnPropertyNames(obj);
+      else
+        for (var key in obj)
+          pNames.push(key);
+
+      for (var i = 0; i < pNames.length; i++) (function(key) {
+        defineProperty(m, key, {
+          configurable: false,
+          enumerable: true,
+          get: function () {
+            return obj[key];
+          },
+          set: function() {
+            throw new Error('Module exports cannot be changed externally.');
+          }
+        });
+      })(pNames[i]);
+
+      if (Object.freeze)
+        Object.freeze(m);
+
+      return m;
+    },
+    // 26.3.3.14
+    set: function(name, module) {
+      if (!(module instanceof Module))
+        throw new TypeError('Loader.set(' + name + ', module) must be a module');
+      this._loader.modules[name] = {
+        module: module
+      };
+    },
+    // 26.3.3.15 values not implemented
+    // 26.3.3.16 @@iterator not implemented
+    // 26.3.3.17 @@toStringTag not implemented
+
+    // 26.3.3.18.1
+    normalize: function(name, referrerName, referrerAddress) {},
+    // 26.3.3.18.2
+    locate: function(load) {
+      return load.name;
+    },
+    // 26.3.3.18.3
+    fetch: function(load) {
+    },
+    // 26.3.3.18.4
+    translate: function(load) {
+      return load.source;
+    },
+    // 26.3.3.18.5
+    instantiate: function(load) {
+    }
+  };
+
+  var _newModule = Loader.prototype.newModule;
+
+/*
+ * ES6 Module Declarative Linking Code
+ */
+  function link(linkSet, linkError) {
+
+    var loader = linkSet.loader;
+
+    if (!linkSet.loads.length)
+      return;
+
+    var loads = linkSet.loads.concat([]);
+
+    for (var i = 0; i < loads.length; i++) {
+      var load = loads[i];
+
+      var module = doDynamicExecute(linkSet, load, linkError);
+      if (!module)
+        return;
+      load.module = {
+        name: load.name,
+        module: module
+      };
+      load.status = 'linked';
+
+      finishLoad(loader, load);
+    }
+  }
+
+})();
+
+var System;
+
+// SystemJS Loader Class and Extension helpers
+function SystemJSLoader() {
+  Loader.call(this);
+
+  this.paths = {};
+  this._loader.paths = {};
+
+  systemJSConstructor.call(this);
+}
+
+// inline Object.create-style class extension
+function SystemProto() {};
+SystemProto.prototype = Loader.prototype;
+SystemJSLoader.prototype = new SystemProto();
+SystemJSLoader.prototype.constructor = SystemJSLoader;
+
+var systemJSConstructor;
+
+function hook(name, hook) {
+  SystemJSLoader.prototype[name] = hook(SystemJSLoader.prototype[name] || function() {});
+}
+function hookConstructor(hook) {
+  systemJSConstructor = hook(systemJSConstructor || function() {});
+}
+
+
+var absURLRegEx = /^[^\/]+:\/\//;
+function isAbsolute(name) {
+  return name.match(absURLRegEx);
+}
+function isRel(name) {
+  return (name[0] == '.' && (!name[1] || name[1] == '/' || name[1] == '.')) || name[0] == '/';
+}
+function isPlain(name) {
+  return !isRel(name) && !isAbsolute(name);
+}
+
+var baseURIObj = new URL(baseURI);
+
+function urlResolve(name, parent) {
+  // url resolution shortpaths
+  if (name[0] == '.') {
+    // dot-relative url normalization
+    if (name[1] == '/' && name[2] != '.')
+      return (parent && parent.substr(0, parent.lastIndexOf('/') + 1) || baseURI) + name.substr(2);
+  }
+  else if (name[0] != '/' && name.indexOf(':') == -1) {
+    // plain parent normalization
+    return (parent && parent.substr(0, parent.lastIndexOf('/') + 1) || baseURI) + name;
+  }
+
+  return new URL(name, parent && parent.replace(/#/g, '%05') || baseURIObj).href.replace(/%05/g, '#');
+}
+
+// NB no specification provided for System.paths, used ideas discussed in https://github.com/jorendorff/js-loaders/issues/25
+function applyPaths(loader, name) {
+  // most specific (most number of slashes in path) match wins
+  var pathMatch = '', wildcard, maxWildcardPrefixLen = 0;
+
+  var paths = loader.paths;
+  var pathsCache = loader._loader.paths;
+
+  // check to see if we have a paths entry
+  for (var p in paths) {
+    if (paths.hasOwnProperty && !paths.hasOwnProperty(p))
+      continue;
+
+    // paths sanitization
+    var path = paths[p];
+    if (path !== pathsCache[p])
+      path = paths[p] = pathsCache[p] = urlResolve(paths[p], isRel(paths[p]) ? baseURI : loader.baseURL);
+
+    // exact path match
+    if (p.indexOf('*') === -1) {
+      if (name == p)
+        return paths[p];
+      
+      // support trailing / in paths rules
+      else if (name.substr(0, p.length - 1) == p.substr(0, p.length - 1) && (name.length < p.length || name[p.length - 1] == p[p.length - 1]) && (paths[p][paths[p].length - 1] == '/' || paths[p] == '')) {
+        return paths[p].substr(0, paths[p].length - 1) + (name.length > p.length ? (paths[p] && '/' || '') + name.substr(p.length) : '');
+      }
+    }
+    // wildcard path match
+    else {
+      var pathParts = p.split('*');
+      if (pathParts.length > 2)
+        throw new TypeError('Only one wildcard in a path is permitted');
+
+      var wildcardPrefixLen = pathParts[0].length;
+      if (wildcardPrefixLen >= maxWildcardPrefixLen &&
+          name.substr(0, pathParts[0].length) == pathParts[0] &&
+          name.substr(name.length - pathParts[1].length) == pathParts[1]) {
+            maxWildcardPrefixLen = wildcardPrefixLen;
+            pathMatch = p;
+            wildcard = name.substr(pathParts[0].length, name.length - pathParts[1].length - pathParts[0].length);
+          }
+    }
+  }
+
+  var outPath = paths[pathMatch];
+  if (typeof wildcard == 'string')
+    outPath = outPath.replace('*', wildcard);
+
+  return outPath;
+}
+
+function dedupe(deps) {
+  var newDeps = [];
+  for (var i = 0, l = deps.length; i < l; i++)
+    if (indexOf.call(newDeps, deps[i]) == -1)
+      newDeps.push(deps[i])
+  return newDeps;
+}
+
+function group(deps) {
+  var names = [];
+  var indices = [];
+  for (var i = 0, l = deps.length; i < l; i++) {
+    var index = indexOf.call(names, deps[i]);
+    if (index === -1) {
+      names.push(deps[i]);
+      indices.push([i]);
+    }
+    else {
+      indices[index].push(i);
+    }
+  }
+  return { names: names, indices: indices };
+}
+
+var getOwnPropertyDescriptor = true;
+try {
+  Object.getOwnPropertyDescriptor({ a: 0 }, 'a');
+}
+catch(e) {
+  getOwnPropertyDescriptor = false;
+}
+
+// converts any module.exports object into an object ready for SystemJS.newModule
+function getESModule(exports) {
+  var esModule = {};
+  // don't trigger getters/setters in environments that support them
+  if ((typeof exports == 'object' || typeof exports == 'function') && exports !== __global) {
+      if (getOwnPropertyDescriptor) {
+        for (var p in exports) {
+          // The default property is copied to esModule later on
+          if (p === 'default')
+            continue;
+          defineOrCopyProperty(esModule, exports, p);
+        }
+      }
+      else {
+        extend(esModule, exports);
+      }
+  }
+  esModule['default'] = exports;
+  defineProperty(esModule, '__useDefault', {
+    value: true
+  });
+  return esModule;
+}
+
+function defineOrCopyProperty(targetObj, sourceObj, propName) {
+  try {
+    var d;
+    if (d = Object.getOwnPropertyDescriptor(sourceObj, propName))
+      defineProperty(targetObj, propName, d);
+  }
+  catch (ex) {
+    // Object.getOwnPropertyDescriptor threw an exception, fall back to normal set property
+    // we dont need hasOwnProperty here because getOwnPropertyDescriptor would have returned undefined above
+    targetObj[propName] = sourceObj[propName];
+    return false;
+  }
+}
+
+function extend(a, b, prepend) {
+  var hasOwnProperty = b && b.hasOwnProperty;
+  for (var p in b) {
+    if (hasOwnProperty && !b.hasOwnProperty(p))
+      continue;
+    if (!prepend || !(p in a))
+      a[p] = b[p];
+  }
+  return a;
+}
+
+// meta first-level extends where:
+// array + array appends
+// object + object extends
+// other properties replace
+function extendMeta(a, b, prepend) {
+  var hasOwnProperty = b && b.hasOwnProperty;
+  for (var p in b) {
+    if (hasOwnProperty && !b.hasOwnProperty(p))
+      continue;
+    var val = b[p];
+    if (!(p in a))
+      a[p] = val;
+    else if (val instanceof Array && a[p] instanceof Array)
+      a[p] = [].concat(prepend ? val : a[p]).concat(prepend ? a[p] : val);
+    else if (typeof val == 'object' && val !== null && typeof a[p] == 'object')
+      a[p] = extend(extend({}, a[p]), val, prepend);
+    else if (!prepend)
+      a[p] = val;
+  }
+}
+
+function extendPkgConfig(pkgCfgA, pkgCfgB, pkgName, loader, warnInvalidProperties) {
+  for (var prop in pkgCfgB) {
+    if (indexOf.call(['main', 'format', 'defaultExtension', 'basePath'], prop) != -1) {
+      pkgCfgA[prop] = pkgCfgB[prop];
+    }
+    else if (prop == 'map') {
+      extend(pkgCfgA.map = pkgCfgA.map || {}, pkgCfgB.map);
+    }
+    else if (prop == 'meta') {
+      extend(pkgCfgA.meta = pkgCfgA.meta || {}, pkgCfgB.meta);
+    }
+    else if (prop == 'depCache') {
+      for (var d in pkgCfgB.depCache) {
+        var dNormalized;
+
+        if (d.substr(0, 2) == './')
+          dNormalized = pkgName + '/' + d.substr(2);
+        else
+          dNormalized = coreResolve.call(loader, d);
+        loader.depCache[dNormalized] = (loader.depCache[dNormalized] || []).concat(pkgCfgB.depCache[d]);
+      }
+    }
+    else if (warnInvalidProperties && indexOf.call(['browserConfig', 'nodeConfig', 'devConfig', 'productionConfig'], prop) == -1 && 
+        (!pkgCfgB.hasOwnProperty || pkgCfgB.hasOwnProperty(prop))) {
+      warn.call(loader, '"' + prop + '" is not a valid package configuration option in package ' + pkgName);
+    }
+  }
+}
+
+// deeply-merge (to first level) config with any existing package config
+function setPkgConfig(loader, pkgName, cfg, prependConfig) {
+  var pkg;
+
+  // first package is config by reference for fast path, cloned after that
+  if (!loader.packages[pkgName]) {
+    pkg = loader.packages[pkgName] = cfg;
+  }
+  else {
+    var basePkg = loader.packages[pkgName];
+    pkg = loader.packages[pkgName] = {};
+
+    extendPkgConfig(pkg, prependConfig ? cfg : basePkg, pkgName, loader, prependConfig);
+    extendPkgConfig(pkg, prependConfig ? basePkg : cfg, pkgName, loader, !prependConfig);
+  }
+  
+  // main object becomes main map
+  if (typeof pkg.main == 'object') {
+    pkg.map = pkg.map || {};
+    pkg.map['./@main'] = pkg.main;
+    pkg.main['default'] = pkg.main['default'] || './';
+    pkg.main = '@main';
+  }
+
+  return pkg;
+}
+
+function warn(msg) {
+  if (this.warnings && typeof console != 'undefined' && console.warn)
+    console.warn(msg);
+}
+  var fetchTextFromURL;
+  if (typeof XMLHttpRequest != 'undefined') {
+    fetchTextFromURL = function(url, authorization, fulfill, reject) {
+      var xhr = new XMLHttpRequest();
+      var sameDomain = true;
+      var doTimeout = false;
+      if (!('withCredentials' in xhr)) {
+        // check if same domain
+        var domainCheck = /^(\w+:)?\/\/([^\/]+)/.exec(url);
+        if (domainCheck) {
+          sameDomain = domainCheck[2] === window.location.host;
+          if (domainCheck[1])
+            sameDomain &= domainCheck[1] === window.location.protocol;
+        }
+      }
+      if (!sameDomain && typeof XDomainRequest != 'undefined') {
+        xhr = new XDomainRequest();
+        xhr.onload = load;
+        xhr.onerror = error;
+        xhr.ontimeout = error;
+        xhr.onprogress = function() {};
+        xhr.timeout = 0;
+        doTimeout = true;
+      }
+      function load() {
+        fulfill(xhr.responseText);
+      }
+      function error() {
+        reject(new Error('XHR error' + (xhr.status ? ' (' + xhr.status + (xhr.statusText ? ' ' + xhr.statusText  : '') + ')' : '') + ' loading ' + url));
+      }
+
+      xhr.onreadystatechange = function () {
+        if (xhr.readyState === 4) {
+          // in Chrome on file:/// URLs, status is 0
+          if (xhr.status == 0) {
+            if (xhr.responseText) {
+              load();
+            }
+            else {
+              // when responseText is empty, wait for load or error event
+              // to inform if it is a 404 or empty file
+              xhr.addEventListener('error', error);
+              xhr.addEventListener('load', load);
+            }
+          }
+          else if (xhr.status === 200) {
+            load();
+          }
+          else {
+            error();
+          }
+        }
+      };
+      xhr.open("GET", url, true);
+
+      if (xhr.setRequestHeader) {
+        xhr.setRequestHeader('Accept', 'application/x-es-module, */*');
+        // can set "authorization: true" to enable withCredentials only
+        if (authorization) {
+          if (typeof authorization == 'string')
+            xhr.setRequestHeader('Authorization', authorization);
+          xhr.withCredentials = true;
+        }
+      }
+
+      if (doTimeout) {
+        setTimeout(function() {
+          xhr.send();
+        }, 0);
+      } else {
+        xhr.send(null);
+      }
+    };
+  }
+  else if (typeof require != 'undefined' && typeof process != 'undefined') {
+    var fs;
+    fetchTextFromURL = function(url, authorization, fulfill, reject) {
+      if (url.substr(0, 8) != 'file:///')
+        throw new Error('Unable to fetch "' + url + '". Only file URLs of the form file:/// allowed running in Node.');
+      fs = fs || require('fs');
+      if (isWindows)
+        url = url.replace(/\//g, '\\').substr(8);
+      else
+        url = url.substr(7);
+      return fs.readFile(url, function(err, data) {
+        if (err) {
+          return reject(err);
+        }
+        else {
+          // Strip Byte Order Mark out if it's the leading char
+          var dataString = data + '';
+          if (dataString[0] === '\ufeff')
+            dataString = dataString.substr(1);
+
+          fulfill(dataString);
+        }
+      });
+    };
+  }
+  else if (typeof self != 'undefined' && typeof self.fetch != 'undefined') {
+    fetchTextFromURL = function(url, authorization, fulfill, reject) {
+      var opts = {
+        headers: {'Accept': 'application/x-es-module, */*'}
+      };
+
+      if (authorization) {
+        if (typeof authorization == 'string')
+          opts.headers['Authorization'] = authorization;
+        opts.credentials = 'include';
+      }
+
+      fetch(url, opts)
+        .then(function (r) {
+          if (r.ok) {
+            return r.text();
+          } else {
+            throw new Error('Fetch error: ' + r.status + ' ' + r.statusText);
+          }
+        })
+        .then(fulfill, reject);
+    }
+  }
+  else {
+    throw new TypeError('No environment fetch API available.');
+  }
+function readMemberExpression(p, value) {
+  var pParts = p.split('.');
+  while (pParts.length)
+    value = value[pParts.shift()];
+  return value;
+}
+
+function getMapMatch(map, name) {
+  var bestMatch, bestMatchLength = 0;
+
+  for (var p in map) {
+    if (name.substr(0, p.length) == p && (name.length == p.length || name[p.length] == '/')) {
+      var curMatchLength = p.split('/').length;
+      if (curMatchLength <= bestMatchLength)
+        continue;
+      bestMatch = p;
+      bestMatchLength = curMatchLength;
+    }
+  }
+
+  return bestMatch;
+}
+
+function prepareBaseURL(loader) {
+  // ensure baseURl is fully normalized
+  if (this._loader.baseURL !== this.baseURL) {
+    if (this.baseURL[this.baseURL.length - 1] != '/')
+      this.baseURL += '/';
+    
+    this._loader.baseURL = this.baseURL = new URL(this.baseURL, baseURIObj).href;
+  }
+}
+
+var envModule;
+function setProduction(isProduction, isBuilder) {
+  this.set('@system-env', envModule = this.newModule({
+    browser: isBrowser,
+    node: !!this._nodeRequire,
+    production: !isBuilder && isProduction,
+    dev: isBuilder || !isProduction,
+    build: isBuilder,
+    'default': true
+  }));
+}
+
+hookConstructor(function(constructor) {
+  return function() {
+    constructor.call(this);
+
+    // support baseURL
+    this.baseURL = baseURI;
+
+    // support map and paths
+    this.map = {};
+
+    // make the location of the system.js script accessible
+    if (typeof $__curScript != 'undefined')
+      this.scriptSrc = $__curScript.src;
+
+    // global behaviour flags
+    this.warnings = false;
+    this.defaultJSExtensions = false;
+    this.pluginFirst = false;
+    this.loaderErrorStack = false;
+
+    // by default load ".json" files as json
+    // leading * meta doesn't need normalization
+    // NB add this in next breaking release
+    // this.meta['*.json'] = { format: 'json' };
+
+    // support the empty module, as a concept
+    this.set('@empty', this.newModule({}));
+
+    setProduction.call(this, false, false);
+  };
+});
+
+// include the node require since we're overriding it
+if (typeof require != 'undefined' && typeof process != 'undefined' && !process.browser)
+  SystemJSLoader.prototype._nodeRequire = require;
+
+/*
+  Core SystemJS Normalization
+
+  If a name is relative, we apply URL normalization to the page
+  If a name is an absolute URL, we leave it as-is
+
+  Plain names (neither of the above) run through the map and paths
+  normalization phases.
+
+  The paths normalization phase applies last (paths extension), which
+  defines the `decanonicalize` function and normalizes everything into
+  a URL.
+ */
+
+var parentModuleContext;
+function getNodeModule(name, baseURL) {
+  if (!isPlain(name))
+    throw new Error('Node module ' + name + ' can\'t be loaded as it is not a package require.');
+
+  if (!parentModuleContext) {
+    var Module = this._nodeRequire('module');
+    var base = baseURL.substr(isWindows ? 8 : 7);
+    parentModuleContext = new Module(base);
+    parentModuleContext.paths = Module._nodeModulePaths(base);
+  }
+  return parentModuleContext.require(name);
+}
+
+function coreResolve(name, parentName) {
+  // standard URL resolution
+  if (isRel(name))
+    return urlResolve(name, parentName);
+  else if (isAbsolute(name))
+    return name;
+
+  // plain names not starting with './', '://' and '/' go through custom resolution
+  var mapMatch = getMapMatch(this.map, name);
+
+  if (mapMatch) {
+    name = this.map[mapMatch] + name.substr(mapMatch.length);
+
+    if (isRel(name))
+      return urlResolve(name);
+    else if (isAbsolute(name))
+      return name;
+  }
+
+  if (this.has(name))
+    return name;
+  
+  // dynamically load node-core modules when requiring `@node/fs` for example
+  if (name.substr(0, 6) == '@node/') {
+    if (!this._nodeRequire)
+      throw new TypeError('Error loading ' + name + '. Can only load node core modules in Node.');
+    if (this.builder)
+      this.set(name, this.newModule({}));
+    else
+      this.set(name, this.newModule(getESModule(getNodeModule.call(this, name.substr(6), this.baseURL))));
+    return name;
+  }
+
+  // prepare the baseURL to ensure it is normalized
+  prepareBaseURL.call(this);
+
+  return applyPaths(this, name) || this.baseURL + name;
+}
+
+hook('normalize', function(normalize) {
+  return function(name, parentName, skipExt) {
+    var resolved = coreResolve.call(this, name, parentName);
+    if (this.defaultJSExtensions && !skipExt && resolved.substr(resolved.length - 3, 3) != '.js' && !isPlain(resolved))
+      resolved += '.js';
+    return resolved;
+  };
+});
+
+// percent encode just '#' in urls if using HTTP requests
+var httpRequest = typeof XMLHttpRequest != 'undefined';
+hook('locate', function(locate) {
+  return function(load) {
+    return Promise.resolve(locate.call(this, load))
+    .then(function(address) {
+      if (httpRequest)
+        return address.replace(/#/g, '%23');
+      return address;
+    });
+  };
+});
+
+/*
+ * Fetch with authorization
+ */
+hook('fetch', function() {
+  return function(load) {
+    return new Promise(function(resolve, reject) {
+      fetchTextFromURL(load.address, load.metadata.authorization, resolve, reject);
+    });
+  };
+});
+
+/*
+  __useDefault
+  
+  When a module object looks like:
+  newModule(
+    __useDefault: true,
+    default: 'some-module'
+  })
+
+  Then importing that module provides the 'some-module'
+  result directly instead of the full module.
+
+  Useful for eg module.exports = function() {}
+*/
+hook('import', function(systemImport) {
+  return function(name, parentName, parentAddress) {
+    if (parentName && parentName.name)
+      warn.call(this, 'SystemJS.import(name, { name: parentName }) is deprecated for SystemJS.import(name, parentName), while importing ' + name + ' from ' + parentName.name);
+    return systemImport.call(this, name, parentName, parentAddress).then(function(module) {
+      return module.__useDefault ? module['default'] : module;
+    });
+  };
+});
+
+/*
+ * Allow format: 'detect' meta to enable format detection
+ */
+hook('translate', function(systemTranslate) {
+  return function(load) {
+    if (load.metadata.format == 'detect')
+      load.metadata.format = undefined;
+    return systemTranslate.apply(this, arguments);
+  };
+});
+
+
+/*
+ * JSON format support
+ *
+ * Supports loading JSON files as a module format itself
+ *
+ * Usage:
+ *
+ * SystemJS.config({
+ *   meta: {
+ *     '*.json': { format: 'json' }
+ *   }
+ * });
+ *
+ * Module is returned as if written:
+ *
+ * export default {JSON}
+ *
+ * No named exports are provided
+ *
+ * Files ending in ".json" are treated as json automatically by SystemJS
+ */
+hook('instantiate', function(instantiate) {
+  return function(load) {
+    if (load.metadata.format == 'json' && !this.builder) {
+      var entry = load.metadata.entry = createEntry();
+      entry.deps = [];
+      entry.execute = function() {
+        try {
+          return JSON.parse(load.source);
+        }
+        catch(e) {
+          throw new Error("Invalid JSON file " + load.name);
+        }
+      };
+    }
+  };
+})
+
+/*
+ Extend config merging one deep only
+
+  loader.config({
+    some: 'random',
+    config: 'here',
+    deep: {
+      config: { too: 'too' }
+    }
+  });
+
+  <=>
+
+  loader.some = 'random';
+  loader.config = 'here'
+  loader.deep = loader.deep || {};
+  loader.deep.config = { too: 'too' };
+
+
+  Normalizes meta and package configs allowing for:
+
+  SystemJS.config({
+    meta: {
+      './index.js': {}
+    }
+  });
+
+  To become
+
+  SystemJS.meta['https://thissite.com/index.js'] = {};
+
+  For easy normalization canonicalization with latest URL support.
+
+*/
+function envSet(loader, cfg, envCallback) {
+  if (envModule.browser && cfg.browserConfig)
+    envCallback(cfg.browserConfig);
+  if (envModule.node && cfg.nodeConfig)
+    envCallback(cfg.nodeConfig);
+  if (envModule.dev && cfg.devConfig)
+    envCallback(cfg.devConfig);
+  if (envModule.build && cfg.buildConfig)
+    envCallback(cfg.buildConfig);
+  if (envModule.production && cfg.productionConfig)
+    envCallback(cfg.productionConfig);
+}
+
+SystemJSLoader.prototype.getConfig = function(name) {
+  var cfg = {};
+  var loader = this;
+  for (var p in loader) {
+    if (loader.hasOwnProperty && !loader.hasOwnProperty(p) || p in SystemJSLoader.prototype && p != 'transpiler')
+      continue;
+    if (indexOf.call(['_loader', 'amdDefine', 'amdRequire', 'defined', 'failed', 'version', 'loads'], p) == -1)
+      cfg[p] = loader[p];
+  }
+  cfg.production = envModule.production;
+  return cfg;
+};
+
+var curCurScript;
+SystemJSLoader.prototype.config = function(cfg, isEnvConfig) {
+  var loader = this;
+
+  if ('loaderErrorStack' in cfg) {
+    curCurScript = $__curScript;
+    if (cfg.loaderErrorStack)
+      $__curScript = undefined;
+    else
+      $__curScript = curCurScript;
+  }
+
+  if ('warnings' in cfg)
+    loader.warnings = cfg.warnings;
+
+  // transpiler deprecation path
+  if (cfg.transpilerRuntime === false)
+    loader._loader.loadedTranspilerRuntime = true;
+
+  if ('production' in cfg || 'build' in cfg)
+    setProduction.call(loader, !!cfg.production, !!(cfg.build || envModule && envModule.build));
+
+  if (!isEnvConfig) {
+    // if using nodeConfig / browserConfig / productionConfig, take baseURL from there
+    // these exceptions will be unnecessary when we can properly implement config queuings
+    var baseURL;
+    envSet(loader, cfg, function(cfg) {
+      baseURL = baseURL || cfg.baseURL;
+    });
+    baseURL = baseURL || cfg.baseURL;
+
+    // always configure baseURL first
+    if (baseURL) {
+      var hasConfig = false;
+      function checkHasConfig(obj) {
+        for (var p in obj)
+          if (obj.hasOwnProperty(p))
+            return true;
+      }
+      if (checkHasConfig(loader.packages) || checkHasConfig(loader.meta) || checkHasConfig(loader.depCache) || checkHasConfig(loader.bundles) || checkHasConfig(loader.packageConfigPaths))
+        throw new TypeError('Incorrect configuration order. The baseURL must be configured with the first SystemJS.config call.');
+
+      this.baseURL = baseURL;
+      prepareBaseURL.call(this);
+    }
+
+    if (cfg.paths)
+      extend(loader.paths, cfg.paths);
+
+    envSet(loader, cfg, function(cfg) {
+      if (cfg.paths)
+        extend(loader.paths, cfg.paths);
+    });
+
+    // warn on wildcard path deprecations
+    if (this.warnings) {
+      for (var p in loader.paths)
+        if (p.indexOf('*') != -1)
+          warn.call(loader, 'Paths configuration "' + p + '" -> "' + loader.paths[p] + '" uses wildcards which are being deprecated for simpler trailing "/" folder paths.');
+    }
+  }
+
+  if (cfg.defaultJSExtensions) {
+    loader.defaultJSExtensions = cfg.defaultJSExtensions;
+    warn.call(loader, 'The defaultJSExtensions configuration option is deprecated, use packages configuration instead.');
+  }
+
+  if (cfg.pluginFirst)
+    loader.pluginFirst = cfg.pluginFirst;
+
+  if (cfg.map) {
+    var objMaps = '';
+    for (var p in cfg.map) {
+      var v = cfg.map[p];
+
+      // object map backwards-compat into packages configuration
+      if (typeof v !== 'string') {
+        objMaps += (objMaps.length ? ', ' : '') + '"' + p + '"';
+
+        var defaultJSExtension = loader.defaultJSExtensions && p.substr(p.length - 3, 3) != '.js';
+        var prop = loader.decanonicalize(p);
+        if (defaultJSExtension && prop.substr(prop.length - 3, 3) == '.js')
+          prop = prop.substr(0, prop.length - 3);
+
+        // if a package main, revert it
+        var pkgMatch = '';
+        for (var pkg in loader.packages) {
+          if (prop.substr(0, pkg.length) == pkg 
+              && (!prop[pkg.length] || prop[pkg.length] == '/') 
+              && pkgMatch.split('/').length < pkg.split('/').length)
+            pkgMatch = pkg;
+        }
+        if (pkgMatch && loader.packages[pkgMatch].main)
+          prop = prop.substr(0, prop.length - loader.packages[pkgMatch].main.length - 1);
+
+        var pkg = loader.packages[prop] = loader.packages[prop] || {};
+        pkg.map = v;
+      }
+      else {
+        loader.map[p] = v;
+      }
+    }
+    if (objMaps)
+      warn.call(loader, 'The map configuration for ' + objMaps + ' uses object submaps, which is deprecated in global map.\nUpdate this to use package contextual map with configs like SystemJS.config({ packages: { "' + p + '": { map: {...} } } }).');
+  }
+
+  if (cfg.packageConfigPaths) {
+    var packageConfigPaths = [];
+    for (var i = 0; i < cfg.packageConfigPaths.length; i++) {
+      var path = cfg.packageConfigPaths[i];
+      var packageLength = Math.max(path.lastIndexOf('*') + 1, path.lastIndexOf('/'));
+      var normalized = coreResolve.call(loader, path.substr(0, packageLength));
+      packageConfigPaths[i] = normalized + path.substr(packageLength);
+    }
+    loader.packageConfigPaths = packageConfigPaths;
+  }
+
+  if (cfg.bundles) {
+    for (var p in cfg.bundles) {
+      var bundle = [];
+      for (var i = 0; i < cfg.bundles[p].length; i++) {
+        var defaultJSExtension = loader.defaultJSExtensions && cfg.bundles[p][i].substr(cfg.bundles[p][i].length - 3, 3) != '.js';
+        var normalizedBundleDep = loader.decanonicalize(cfg.bundles[p][i]);
+        if (defaultJSExtension && normalizedBundleDep.substr(normalizedBundleDep.length - 3, 3) == '.js')
+          normalizedBundleDep = normalizedBundleDep.substr(0, normalizedBundleDep.length - 3);
+        bundle.push(normalizedBundleDep);
+      }
+      loader.bundles[p] = bundle;
+    }
+  }
+
+  if (cfg.packages) {
+    for (var p in cfg.packages) {
+      if (p.match(/^([^\/]+:)?\/\/$/))
+        throw new TypeError('"' + p + '" is not a valid package name.');
+
+      var prop = coreResolve.call(loader, p);
+
+      // allow trailing slash in packages
+      if (prop[prop.length - 1] == '/')
+        prop = prop.substr(0, prop.length - 1);
+
+      setPkgConfig(loader, prop, cfg.packages[p], false);
+    }
+  }
+
+  for (var c in cfg) {
+    var v = cfg[c];
+
+    if (indexOf.call(['baseURL', 'map', 'packages', 'bundles', 'paths', 'warnings', 'packageConfigPaths', 
+          'loaderErrorStack', 'browserConfig', 'nodeConfig', 'devConfig', 'buildConfig', 'productionConfig'], c) != -1)
+      continue;
+
+    if (typeof v != 'object' || v instanceof Array) {
+      loader[c] = v;
+    }
+    else {
+      loader[c] = loader[c] || {};
+
+      for (var p in v) {
+        // base-level wildcard meta does not normalize to retain catch-all quality
+        if (c == 'meta' && p[0] == '*') {
+          extend(loader[c][p] = loader[c][p] || {}, v[p]);
+        }
+        else if (c == 'meta') {
+          // meta can go through global map, with defaultJSExtensions adding
+          var resolved = coreResolve.call(loader, p);
+          if (loader.defaultJSExtensions && resolved.substr(resolved.length - 3, 3) != '.js' && !isPlain(resolved))
+            resolved += '.js';
+          extend(loader[c][resolved] = loader[c][resolved] || {}, v[p]);
+        }
+        else if (c == 'depCache') {
+          var defaultJSExtension = loader.defaultJSExtensions && p.substr(p.length - 3, 3) != '.js';
+          var prop = loader.decanonicalize(p);
+          if (defaultJSExtension && prop.substr(prop.length - 3, 3) == '.js')
+            prop = prop.substr(0, prop.length - 3);
+          loader[c][prop] = [].concat(v[p]);
+        }
+        else {
+          loader[c][p] = v[p];
+        }
+      }
+    }
+  }
+
+  envSet(loader, cfg, function(cfg) {
+    loader.config(cfg, true);
+  });
+};/*
+ * Package Configuration Extension
+ *
+ * Example:
+ *
+ * SystemJS.packages = {
+ *   jquery: {
+ *     main: 'index.js', // when not set, package name is requested directly
+ *     format: 'amd',
+ *     defaultExtension: 'ts', // defaults to 'js', can be set to false
+ *     modules: {
+ *       '*.ts': {
+ *         loader: 'typescript'
+ *       },
+ *       'vendor/sizzle.js': {
+ *         format: 'global'
+ *       }
+ *     },
+ *     map: {
+ *        // map internal require('sizzle') to local require('./vendor/sizzle')
+ *        sizzle: './vendor/sizzle.js',
+ *        // map any internal or external require of 'jquery/vendor/another' to 'another/index.js'
+ *        './vendor/another.js': './another/index.js',
+ *        // test.js / test -> lib/test.js
+ *        './test.js': './lib/test.js',
+ *
+ *        // environment-specific map configurations
+ *        './index.js': {
+ *          '~browser': './index-node.js',
+ *          './custom-condition.js|~export': './index-custom.js'
+ *        }
+ *     },
+ *     // allows for setting package-prefixed depCache
+ *     // keys are normalized module names relative to the package itself
+ *     depCache: {
+ *       // import 'package/index.js' loads in parallel package/lib/test.js,package/vendor/sizzle.js
+ *       './index.js': ['./test'],
+ *       './test.js': ['external-dep'],
+ *       'external-dep/path.js': ['./another.js']
+ *     }
+ *   }
+ * };
+ *
+ * Then:
+ *   import 'jquery'                       -> jquery/index.js
+ *   import 'jquery/submodule'             -> jquery/submodule.js
+ *   import 'jquery/submodule.ts'          -> jquery/submodule.ts loaded as typescript
+ *   import 'jquery/vendor/another'        -> another/index.js
+ *
+ * Detailed Behaviours
+ * - main can have a leading "./" can be added optionally
+ * - map and defaultExtension are applied to the main
+ * - defaultExtension adds the extension only if the exact extension is not present
+ * - defaultJSExtensions applies after map when defaultExtension is not set
+ * - if a meta value is available for a module, map and defaultExtension are skipped
+ * - like global map, package map also applies to subpaths (sizzle/x, ./vendor/another/sub)
+ * - condition module map is '@env' module in package or '@system-env' globally
+ * - map targets support conditional interpolation ('./x': './x.#{|env}.js')
+ * - internal package map targets cannot use boolean conditionals
+ *
+ * Package Configuration Loading
+ *
+ * Not all packages may already have their configuration present in the System config
+ * For these cases, a list of packageConfigPaths can be provided, which when matched against
+ * a request, will first request a ".json" file by the package name to derive the package
+ * configuration from. This allows dynamic loading of non-predetermined code, a key use
+ * case in SystemJS.
+ *
+ * Example:
+ *
+ *   SystemJS.packageConfigPaths = ['packages/test/package.json', 'packages/*.json'];
+ *
+ *   // will first request 'packages/new-package/package.json' for the package config
+ *   // before completing the package request to 'packages/new-package/path'
+ *   SystemJS.import('packages/new-package/path');
+ *
+ *   // will first request 'packages/test/package.json' before the main
+ *   SystemJS.import('packages/test');
+ *
+ * When a package matches packageConfigPaths, it will always send a config request for
+ * the package configuration.
+ * The package name itself is taken to be the match up to and including the last wildcard
+ * or trailing slash.
+ * The most specific package config path will be used.
+ * Any existing package configurations for the package will deeply merge with the
+ * package config, with the existing package configurations taking preference.
+ * To opt-out of the package configuration request for a package that matches
+ * packageConfigPaths, use the { configured: true } package config option.
+ *
+ */
+(function() {
+
+  hookConstructor(function(constructor) {
+    return function() {
+      constructor.call(this);
+      this.packages = {};
+      this.packageConfigPaths = [];
+    };
+  });
+
+  function getPackage(loader, normalized) {
+    // use most specific package
+    var curPkg, curPkgLen = 0, pkgLen;
+    for (var p in loader.packages) {
+      if (normalized.substr(0, p.length) === p && (normalized.length === p.length || normalized[p.length] === '/')) {
+        pkgLen = p.split('/').length;
+        if (pkgLen > curPkgLen) {
+          curPkg = p;
+          curPkgLen = pkgLen;
+        }
+      }
+    }
+    return curPkg;
+  }
+
+  function addDefaultExtension(loader, pkg, pkgName, subPath, skipExtensions) {
+    // don't apply extensions to folders or if defaultExtension = false
+    if (!subPath || subPath[subPath.length - 1] == '/' || skipExtensions || pkg.defaultExtension === false)
+      return subPath;
+
+    var metaMatch = false;
+
+    // exact meta or meta with any content after the last wildcard skips extension
+    if (pkg.meta)
+      getMetaMatches(pkg.meta, subPath, function(metaPattern, matchMeta, matchDepth) {
+        if (matchDepth == 0 || metaPattern.lastIndexOf('*') != metaPattern.length - 1)
+          return metaMatch = true;
+      });
+
+    // exact global meta or meta with any content after the last wildcard skips extension
+    if (!metaMatch && loader.meta)
+      getMetaMatches(loader.meta, pkgName + '/' + subPath, function(metaPattern, matchMeta, matchDepth) {
+        if (matchDepth == 0 || metaPattern.lastIndexOf('*') != metaPattern.length - 1)
+          return metaMatch = true;
+      });
+
+    if (metaMatch)
+      return subPath;
+
+    // work out what the defaultExtension is and add if not there already
+    // NB reconsider if default should really be ".js"?
+    var defaultExtension = '.' + (pkg.defaultExtension || 'js');
+    if (subPath.substr(subPath.length - defaultExtension.length) != defaultExtension)
+      return subPath + defaultExtension;
+    else
+      return subPath;
+  }
+
+  function applyPackageConfigSync(loader, pkg, pkgName, subPath, skipExtensions) {
+    // main
+    if (!subPath) {
+      if (pkg.main)
+        subPath = pkg.main.substr(0, 2) == './' ? pkg.main.substr(2) : pkg.main;
+      // also no submap if name is package itself (import 'pkg' -> 'path/to/pkg.js')
+      else
+        // NB can add a default package main convention here when defaultJSExtensions is deprecated
+        // if it becomes internal to the package then it would no longer be an exit path
+        return pkgName + (loader.defaultJSExtensions ? '.js' : '');
+    }
+
+    // map config checking without then with extensions
+    if (pkg.map) {
+      var mapPath = './' + subPath;
+
+      var mapMatch = getMapMatch(pkg.map, mapPath);
+
+      // we then check map with the default extension adding
+      if (!mapMatch) {
+        mapPath = './' + addDefaultExtension(loader, pkg, pkgName, subPath, skipExtensions);
+        if (mapPath != './' + subPath)
+          mapMatch = getMapMatch(pkg.map, mapPath);
+      }
+      if (mapMatch) {
+        var mapped = doMapSync(loader, pkg, pkgName, mapMatch, mapPath, skipExtensions);
+        if (mapped)
+          return mapped;
+      }
+    }
+
+    // normal package resolution
+    return pkgName + '/' + addDefaultExtension(loader, pkg, pkgName, subPath, skipExtensions);
+  }
+
+  function validMapping(mapMatch, mapped, pkgName, path) {
+    // disallow internal to subpath maps
+    if (mapMatch == '.')
+      throw new Error('Package ' + pkgName + ' has a map entry for "." which is not permitted.');
+    
+    // allow internal ./x -> ./x/y or ./x/ -> ./x/y recursive maps
+    // but only if the path is exactly ./x and not ./x/z
+    if (mapped.substr(0, mapMatch.length) == mapMatch && path.length > mapMatch.length)
+      return false;
+
+    return true;
+  }
+
+  function doMapSync(loader, pkg, pkgName, mapMatch, path, skipExtensions) {
+    if (path[path.length - 1] == '/')
+      path = path.substr(0, path.length - 1);
+    var mapped = pkg.map[mapMatch];
+
+    if (typeof mapped == 'object')
+      throw new Error('Synchronous conditional normalization not supported sync normalizing ' + mapMatch + ' in ' + pkgName);
+
+    if (!validMapping(mapMatch, mapped, pkgName, path) || typeof mapped != 'string')
+      return;
+
+    // package map to main / base-level
+    if (mapped == '.')
+      mapped = pkgName;
+
+    // internal package map
+    else if (mapped.substr(0, 2) == './')
+      return pkgName + '/' + addDefaultExtension(loader, pkg, pkgName, mapped.substr(2) + path.substr(mapMatch.length), skipExtensions);
+    
+    // external map reference
+    return loader.normalizeSync(mapped + path.substr(mapMatch.length), pkgName + '/');
+  }
+
+  function applyPackageConfig(loader, pkg, pkgName, subPath, skipExtensions) {
+    // main
+    if (!subPath) {
+      if (pkg.main)
+        subPath = pkg.main.substr(0, 2) == './' ? pkg.main.substr(2) : pkg.main;
+      // also no submap if name is package itself (import 'pkg' -> 'path/to/pkg.js')
+      else
+        // NB can add a default package main convention here when defaultJSExtensions is deprecated
+        // if it becomes internal to the package then it would no longer be an exit path
+        return Promise.resolve(pkgName + (loader.defaultJSExtensions ? '.js' : ''));
+    }
+
+    // map config checking without then with extensions
+    var mapPath, mapMatch;
+
+    if (pkg.map) {
+      mapPath = './' + subPath;
+      mapMatch = getMapMatch(pkg.map, mapPath);
+
+      // we then check map with the default extension adding
+      if (!mapMatch) {
+        mapPath = './' + addDefaultExtension(loader, pkg, pkgName, subPath, skipExtensions);
+        if (mapPath != './' + subPath)
+          mapMatch = getMapMatch(pkg.map, mapPath);
+      }
+    }
+
+    return (mapMatch ? doMap(loader, pkg, pkgName, mapMatch, mapPath, skipExtensions) : Promise.resolve())
+    .then(function(mapped) {
+      if (mapped)
+        return Promise.resolve(mapped);
+
+      // normal package resolution / fallback resolution for no conditional match
+      return Promise.resolve(pkgName + '/' + addDefaultExtension(loader, pkg, pkgName, subPath, skipExtensions));
+    });
+  }
+
+  function doStringMap(loader, pkg, pkgName, mapMatch, mapped, path, skipExtensions) {
+    // NB the interpolation cases should strictly skip subsequent interpolation
+    // package map to main / base-level
+    if (mapped == '.')
+      mapped = pkgName;
+    
+    // internal package map
+    else if (mapped.substr(0, 2) == './')
+      return Promise.resolve(pkgName + '/' + addDefaultExtension(loader, pkg, pkgName, mapped.substr(2) + path.substr(mapMatch.length), skipExtensions))
+      .then(function(name) {
+        return interpolateConditional.call(loader, name, pkgName + '/');
+      });
+    
+    // external map reference
+    return loader.normalize(mapped + path.substr(mapMatch.length), pkgName + '/');
+  }
+
+  function doMap(loader, pkg, pkgName, mapMatch, path, skipExtensions) {
+    if (path[path.length - 1] == '/')
+      path = path.substr(0, path.length - 1);
+
+    var mapped = pkg.map[mapMatch];
+
+    if (typeof mapped == 'string') {
+      if (!validMapping(mapMatch, mapped, pkgName, path))
+        return Promise.resolve();
+      return doStringMap(loader, pkg, pkgName, mapMatch, mapped, path, skipExtensions);
+    }
+
+    // we use a special conditional syntax to allow the builder to handle conditional branch points further
+    if (loader.builder)
+      return Promise.resolve(pkgName + '/#:' + path);
+
+    // we load all conditions upfront
+    var conditionPromises = [];
+    var conditions = [];
+    for (var e in mapped) {
+      var c = parseCondition(e);
+      conditions.push({
+        condition: c,
+        map: mapped[e]
+      });
+      conditionPromises.push(loader['import'](c.module, pkgName));
+    }
+
+    // map object -> conditional map
+    return Promise.all(conditionPromises)
+    .then(function(conditionValues) {
+      // first map condition to match is used
+      for (var i = 0; i < conditions.length; i++) {
+        var c = conditions[i].condition;
+        var value = readMemberExpression(c.prop, conditionValues[i]);
+        if (!c.negate && value || c.negate && !value)
+          return conditions[i].map;
+      }
+    })
+    .then(function(mapped) {
+      if (mapped) {
+        if (!validMapping(mapMatch, mapped, pkgName, path))
+          return;
+        return doStringMap(loader, pkg, pkgName, mapMatch, mapped, path, skipExtensions);
+      }
+
+      // no environment match -> fallback to original subPath by returning undefined
+    });
+  }
+
+  // normalizeSync = decanonicalize + package resolution
+  SystemJSLoader.prototype.normalizeSync = SystemJSLoader.prototype.decanonicalize = SystemJSLoader.prototype.normalize;
+
+  // decanonicalize must JUST handle package defaultExtension: false case when defaultJSExtensions is set
+  // to be deprecated!
+  hook('decanonicalize', function(decanonicalize) {
+    return function(name, parentName) {
+      if (this.builder)
+        return decanonicalize.call(this, name, parentName, true);
+
+      var decanonicalized = decanonicalize.call(this, name, parentName, false);
+
+      if (!this.defaultJSExtensions)
+        return decanonicalized;
+    
+      var pkgName = getPackage(this, decanonicalized);
+
+      var pkg = this.packages[pkgName];
+      var defaultExtension = pkg && pkg.defaultExtension;
+
+      if (defaultExtension == undefined && pkg && pkg.meta)
+        getMetaMatches(pkg.meta, decanonicalized.substr(pkgName), function(metaPattern, matchMeta, matchDepth) {
+          if (matchDepth == 0 || metaPattern.lastIndexOf('*') != metaPattern.length - 1) {
+            defaultExtension = false;
+            return true;
+          }
+        });
+      
+      if ((defaultExtension === false || defaultExtension && defaultExtension != '.js') && name.substr(name.length - 3, 3) != '.js' && decanonicalized.substr(decanonicalized.length - 3, 3) == '.js')
+        decanonicalized = decanonicalized.substr(0, decanonicalized.length - 3);
+
+      return decanonicalized;
+    };
+  });
+
+  hook('normalizeSync', function(normalizeSync) {
+    return function(name, parentName, isPlugin) {
+      var loader = this;
+      isPlugin = isPlugin === true;
+
+      // apply contextual package map first
+      // (we assume the parent package config has already been loaded)
+      if (parentName)
+        var parentPackageName = getPackage(loader, parentName) ||
+            loader.defaultJSExtensions && parentName.substr(parentName.length - 3, 3) == '.js' &&
+            getPackage(loader, parentName.substr(0, parentName.length - 3));
+
+      var parentPackage = parentPackageName && loader.packages[parentPackageName];
+
+      // ignore . since internal maps handled by standard package resolution
+      if (parentPackage && name[0] != '.') {
+        var parentMap = parentPackage.map;
+        var parentMapMatch = parentMap && getMapMatch(parentMap, name);
+
+        if (parentMapMatch && typeof parentMap[parentMapMatch] == 'string') {
+          var mapped = doMapSync(loader, parentPackage, parentPackageName, parentMapMatch, name, isPlugin);      
+          if (mapped)
+            return mapped;
+        }
+      }
+
+      var defaultJSExtension = loader.defaultJSExtensions && name.substr(name.length - 3, 3) != '.js';
+
+      // apply map, core, paths, contextual package map
+      var normalized = normalizeSync.call(loader, name, parentName, false);
+
+      // undo defaultJSExtension
+      if (defaultJSExtension && normalized.substr(normalized.length - 3, 3) != '.js')
+        defaultJSExtension = false;
+      if (defaultJSExtension)
+        normalized = normalized.substr(0, normalized.length - 3);
+
+      var pkgConfigMatch = getPackageConfigMatch(loader, normalized);
+      var pkgName = pkgConfigMatch && pkgConfigMatch.packageName || getPackage(loader, normalized);
+
+      if (!pkgName)
+        return normalized + (defaultJSExtension ? '.js' : '');
+
+      var subPath = normalized.substr(pkgName.length + 1);
+
+      return applyPackageConfigSync(loader, loader.packages[pkgName] || {}, pkgName, subPath, isPlugin);
+    };
+  });
+
+  hook('normalize', function(normalize) {
+    return function(name, parentName, isPlugin) {
+      var loader = this;
+      isPlugin = isPlugin === true;
+
+      return Promise.resolve()
+      .then(function() {
+        // apply contextual package map first
+        // (we assume the parent package config has already been loaded)
+        if (parentName)
+          var parentPackageName = getPackage(loader, parentName) ||
+              loader.defaultJSExtensions && parentName.substr(parentName.length - 3, 3) == '.js' &&
+              getPackage(loader, parentName.substr(0, parentName.length - 3));
+
+        var parentPackage = parentPackageName && loader.packages[parentPackageName];
+
+        // ignore . since internal maps handled by standard package resolution
+        if (parentPackage && name.substr(0, 2) != './') {
+          var parentMap = parentPackage.map;
+          var parentMapMatch = parentMap && getMapMatch(parentMap, name);
+
+          if (parentMapMatch)
+            return doMap(loader, parentPackage, parentPackageName, parentMapMatch, name, isPlugin);
+        }
+
+        return Promise.resolve();
+      })
+      .then(function(mapped) {
+        if (mapped)
+          return mapped;
+
+        var defaultJSExtension = loader.defaultJSExtensions && name.substr(name.length - 3, 3) != '.js';
+
+        // apply map, core, paths, contextual package map
+        var normalized = normalize.call(loader, name, parentName, false);
+
+        // undo defaultJSExtension
+        if (defaultJSExtension && normalized.substr(normalized.length - 3, 3) != '.js')
+          defaultJSExtension = false;
+        if (defaultJSExtension)
+          normalized = normalized.substr(0, normalized.length - 3);
+
+        var pkgConfigMatch = getPackageConfigMatch(loader, normalized);
+        var pkgName = pkgConfigMatch && pkgConfigMatch.packageName || getPackage(loader, normalized);
+
+        if (!pkgName)
+          return Promise.resolve(normalized + (defaultJSExtension ? '.js' : ''));
+
+        var pkg = loader.packages[pkgName];
+
+        // if package is already configured or not a dynamic config package, use existing package config
+        var isConfigured = pkg && (pkg.configured || !pkgConfigMatch);
+        return (isConfigured ? Promise.resolve(pkg) : loadPackageConfigPath(loader, pkgName, pkgConfigMatch.configPath))
+        .then(function(pkg) {
+          var subPath = normalized.substr(pkgName.length + 1);
+
+          return applyPackageConfig(loader, pkg, pkgName, subPath, isPlugin);
+        });
+      });
+    };
+  });
+
+  // check if the given normalized name matches a packageConfigPath
+  // if so, loads the config
+  var packageConfigPaths = {};
+
+  // data object for quick checks against package paths
+  function createPkgConfigPathObj(path) {
+    var lastWildcard = path.lastIndexOf('*');
+    var length = Math.max(lastWildcard + 1, path.lastIndexOf('/'));
+    return {
+      length: length,
+      regEx: new RegExp('^(' + path.substr(0, length).replace(/[.+?^${}()|[\]\\]/g, '\\$&').replace(/\*/g, '[^\\/]+') + ')(\\/|$)'),
+      wildcard: lastWildcard != -1
+    };
+  }
+
+  // most specific match wins
+  function getPackageConfigMatch(loader, normalized) {
+    var pkgName, exactMatch = false, configPath;
+    for (var i = 0; i < loader.packageConfigPaths.length; i++) {
+      var packageConfigPath = loader.packageConfigPaths[i];
+      var p = packageConfigPaths[packageConfigPath] || (packageConfigPaths[packageConfigPath] = createPkgConfigPathObj(packageConfigPath));
+      if (normalized.length < p.length)
+        continue;
+      var match = normalized.match(p.regEx);
+      if (match && (!pkgName || (!(exactMatch && p.wildcard) && pkgName.length < match[1].length))) {
+        pkgName = match[1];
+        exactMatch = !p.wildcard;
+        configPath = pkgName + packageConfigPath.substr(p.length);
+      }
+    }
+
+    if (!pkgName)
+      return;
+
+    return {
+      packageName: pkgName,
+      configPath: configPath
+    };
+  }
+
+  function loadPackageConfigPath(loader, pkgName, pkgConfigPath) {
+    var configLoader = loader.pluginLoader || loader;
+
+    // NB remove this when json is default
+    (configLoader.meta[pkgConfigPath] = configLoader.meta[pkgConfigPath] || {}).format = 'json';
+    configLoader.meta[pkgConfigPath].loader = null;
+
+    return configLoader.load(pkgConfigPath)
+    .then(function() {
+      var cfg = configLoader.get(pkgConfigPath)['default'];
+
+      // support "systemjs" prefixing
+      if (cfg.systemjs)
+        cfg = cfg.systemjs;
+
+      // modules backwards compatibility
+      if (cfg.modules) {
+        cfg.meta = cfg.modules;
+        warn.call(loader, 'Package config file ' + pkgConfigPath + ' is configured with "modules", which is deprecated as it has been renamed to "meta".');
+      }
+
+      return setPkgConfig(loader, pkgName, cfg, true);
+    });
+  }
+
+  function getMetaMatches(pkgMeta, subPath, matchFn) {
+    // wildcard meta
+    var meta = {};
+    var wildcardIndex;
+    for (var module in pkgMeta) {
+      // allow meta to start with ./ for flexibility
+      var dotRel = module.substr(0, 2) == './' ? './' : '';
+      if (dotRel)
+        module = module.substr(2);
+
+      wildcardIndex = module.indexOf('*');
+      if (wildcardIndex === -1)
+        continue;
+
+      if (module.substr(0, wildcardIndex) == subPath.substr(0, wildcardIndex)
+          && module.substr(wildcardIndex + 1) == subPath.substr(subPath.length - module.length + wildcardIndex + 1)) {
+        // alow match function to return true for an exit path
+        if (matchFn(module, pkgMeta[dotRel + module], module.split('/').length))
+          return;
+      }
+    }
+    // exact meta
+    var exactMeta = pkgMeta[subPath] && pkgMeta.hasOwnProperty && pkgMeta.hasOwnProperty(subPath) ? pkgMeta[subPath] : pkgMeta['./' + subPath];
+    if (exactMeta)
+      matchFn(exactMeta, exactMeta, 0);
+  }
+
+  hook('locate', function(locate) {
+    return function(load) {
+      var loader = this;
+      return Promise.resolve(locate.call(this, load))
+      .then(function(address) {
+        var pkgName = getPackage(loader, load.name);
+        if (pkgName) {
+          var pkg = loader.packages[pkgName];
+          var subPath = load.name.substr(pkgName.length + 1);
+
+          var meta = {};
+          if (pkg.meta) {
+            var bestDepth = 0;
+
+            // NB support a main shorthand in meta here?
+            getMetaMatches(pkg.meta, subPath, function(metaPattern, matchMeta, matchDepth) {
+              if (matchDepth > bestDepth)
+                bestDepth = matchDepth;
+              extendMeta(meta, matchMeta, matchDepth && bestDepth > matchDepth);
+            });
+
+            extendMeta(load.metadata, meta);
+          }
+
+          // format
+          if (pkg.format && !load.metadata.loader)
+            load.metadata.format = load.metadata.format || pkg.format;
+        }
+
+        return address;
+      });
+    };
+  });
+
+})();
+/*
+ * Script tag fetch
+ *
+ * When load.metadata.scriptLoad is true, we load via script tag injection.
+ */
+(function() {
+
+  if (typeof document != 'undefined')
+    var head = document.getElementsByTagName('head')[0];
+
+  var curSystem;
+  var curRequire;
+
+  // if doing worker executing, this is set to the load record being executed
+  var workerLoad = null;
+  
+  // interactive mode handling method courtesy RequireJS
+  var ieEvents = head && (function() {
+    var s = document.createElement('script');
+    var isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]';
+    return s.attachEvent && !(s.attachEvent.toString && s.attachEvent.toString().indexOf('[native code') < 0) && !isOpera;
+  })();
+
+  // IE interactive-only part
+  // we store loading scripts array as { script: <script>, load: {...} }
+  var interactiveLoadingScripts = [];
+  var interactiveScript;
+  function getInteractiveScriptLoad() {
+    if (interactiveScript && interactiveScript.script.readyState === 'interactive')
+      return interactiveScript.load;
+
+    for (var i = 0; i < interactiveLoadingScripts.length; i++)
+      if (interactiveLoadingScripts[i].script.readyState == 'interactive') {
+        interactiveScript = interactiveLoadingScripts[i];
+        return interactiveScript.load;
+      }
+  }
+  
+  // System.register, System.registerDynamic, AMD define pipeline
+  // this is called by the above methods when they execute
+  // we then run the reduceRegister_ collection function either immediately
+  // if we are in IE and know the currently executing script (interactive)
+  // or later if we need to wait for the synchronous load callback to know the script
+  var loadingCnt = 0;
+  var registerQueue = [];
+  hook('pushRegister_', function(pushRegister) {
+    return function(register) {
+      // if using eval-execution then skip
+      if (pushRegister.call(this, register))
+        return false;
+
+      // if using worker execution, then we're done
+      if (workerLoad)
+        this.reduceRegister_(workerLoad, register);
+
+      // detect if we know the currently executing load (IE)
+      // if so, immediately call reduceRegister
+      else if (ieEvents)
+        this.reduceRegister_(getInteractiveScriptLoad(), register);
+
+      // otherwise, add to our execution queue
+      // to call reduceRegister on sync script load event
+      else if (loadingCnt)
+        registerQueue.push(register);
+
+      // if we're not currently loading anything though
+      // then do the reduction against a null load
+      // (out of band named define or named register)
+      // note even in non-script environments, this catch is used
+      else
+        this.reduceRegister_(null, register);
+
+      return true;
+    };
+  });
+
+  function webWorkerImport(loader, load) {
+    return new Promise(function(resolve, reject) {
+      if (load.metadata.integrity)
+        reject(new Error('Subresource integrity checking is not supported in web workers.'));
+
+      workerLoad = load;
+      try {
+        importScripts(load.address);
+      }
+      catch(e) {
+        workerLoad = null;
+        reject(e);
+      }
+      workerLoad = null;
+
+      // if nothing registered, then something went wrong
+      if (!load.metadata.entry)
+        reject(new Error(load.address + ' did not call System.register or AMD define. If loading a global, ensure the meta format is set to global.'));
+
+      resolve('');
+    });
+  }
+
+  // override fetch to use script injection
+  hook('fetch', function(fetch) {
+    return function(load) {
+      var loader = this;
+
+      if (load.metadata.format == 'json' || !load.metadata.scriptLoad || (!isBrowser && !isWorker))
+        return fetch.call(this, load);
+
+      if (isWorker)
+        return webWorkerImport(loader, load);
+
+      return new Promise(function(resolve, reject) {
+        var s = document.createElement('script');
+        
+        s.async = true;
+
+        if (load.metadata.crossOrigin)
+          s.crossOrigin = load.metadata.crossOrigin;
+
+        if (load.metadata.integrity)
+          s.setAttribute('integrity', load.metadata.integrity);
+
+        if (ieEvents) {
+          s.attachEvent('onreadystatechange', complete);
+          interactiveLoadingScripts.push({
+            script: s,
+            load: load
+          });
+        }
+        else {
+          s.addEventListener('load', complete, false);
+          s.addEventListener('error', error, false);
+        }
+
+        loadingCnt++;
+
+        curSystem = __global.System;
+        curRequire = __global.require;
+
+        s.src = load.address;
+        head.appendChild(s);
+
+        function complete(evt) {
+          if (s.readyState && s.readyState != 'loaded' && s.readyState != 'complete')
+            return;
+
+          loadingCnt--;
+
+          // complete call is sync on execution finish
+          // (in ie already done reductions)
+          if (!load.metadata.entry && !registerQueue.length) {
+            loader.reduceRegister_(load);
+          }
+          else if (!ieEvents) {
+            for (var i = 0; i < registerQueue.length; i++)
+              loader.reduceRegister_(load, registerQueue[i]);
+            registerQueue = [];
+          }
+
+          cleanup();
+
+          // if nothing registered, then something went wrong
+          if (!load.metadata.entry && !load.metadata.bundle)
+            reject(new Error(load.name + ' did not call System.register or AMD define. If loading a global module configure the global name via the meta exports property for script injection support.'));
+
+          resolve('');
+        }
+
+        function error(evt) {
+          cleanup();
+          reject(new Error('Unable to load script ' + load.address));
+        }
+
+        function cleanup() {
+          __global.System = curSystem;
+          __global.require = curRequire;
+
+          if (s.detachEvent) {
+            s.detachEvent('onreadystatechange', complete);
+            for (var i = 0; i < interactiveLoadingScripts.length; i++)
+              if (interactiveLoadingScripts[i].script == s) {
+                if (interactiveScript && interactiveScript.script == s)
+                  interactiveScript = null;
+                interactiveLoadingScripts.splice(i, 1);
+              }
+          }
+          else {
+            s.removeEventListener('load', complete, false);
+            s.removeEventListener('error', error, false);
+          }
+
+          head.removeChild(s);
+        }
+      });
+    };
+  });
+})();
+/*
+ * Instantiate registry extension
+ *
+ * Supports Traceur System.register 'instantiate' output for loading ES6 as ES5.
+ *
+ * - Creates the loader.register function
+ * - Also supports metadata.format = 'register' in instantiate for anonymous register modules
+ * - Also supports metadata.deps, metadata.execute and metadata.executingRequire
+ *     for handling dynamic modules alongside register-transformed ES6 modules
+ *
+ *
+ * The code here replicates the ES6 linking groups algorithm to ensure that
+ * circular ES6 compiled into System.register can work alongside circular AMD 
+ * and CommonJS, identically to the actual ES6 loader.
+ *
+ */
+
+
+/*
+ * Registry side table entries in loader.defined
+ * Registry Entry Contains:
+ *    - name
+ *    - deps 
+ *    - declare for declarative modules
+ *    - execute for dynamic modules, different to declarative execute on module
+ *    - executingRequire indicates require drives execution for circularity of dynamic modules
+ *    - declarative optional boolean indicating which of the above
+ *
+ * Can preload modules directly on SystemJS.defined['my/module'] = { deps, execute, executingRequire }
+ *
+ * Then the entry gets populated with derived information during processing:
+ *    - normalizedDeps derived from deps, created in instantiate
+ *    - groupIndex used by group linking algorithm
+ *    - evaluated indicating whether evaluation has happend
+ *    - module the module record object, containing:
+ *      - exports actual module exports
+ *
+ *    For dynamic we track the es module with:
+ *    - esModule actual es module value
+ *    - esmExports whether to extend the esModule with named exports
+ *      
+ *    Then for declarative only we track dynamic bindings with the 'module' records:
+ *      - name
+ *      - exports
+ *      - setters declarative setter functions
+ *      - dependencies, module records of dependencies
+ *      - importers, module records of dependents
+ *
+ * After linked and evaluated, entries are removed, declarative module records remain in separate
+ * module binding table
+ *
+ */
+
+var leadingCommentAndMetaRegEx = /^(\s*\/\*[^\*]*(\*(?!\/)[^\*]*)*\*\/|\s*\/\/[^\n]*|\s*"[^"]+"\s*;?|\s*'[^']+'\s*;?)*\s*/;
+function detectRegisterFormat(source) {
+  var leadingCommentAndMeta = source.match(leadingCommentAndMetaRegEx);
+  return leadingCommentAndMeta && source.substr(leadingCommentAndMeta[0].length, 15) == 'System.register';
+}
+
+function createEntry() {
+  return {
+    name: null,
+    deps: null,
+    originalIndices: null,
+    declare: null,
+    execute: null,
+    executingRequire: false,
+    declarative: false,
+    normalizedDeps: null,
+    groupIndex: null,
+    evaluated: false,
+    module: null,
+    esModule: null,
+    esmExports: false
+  };
+}
+
+(function() {
+
+  /*
+   * There are two variations of System.register:
+   * 1. System.register for ES6 conversion (2-3 params) - System.register([name, ]deps, declare)
+   *    see https://github.com/ModuleLoader/es6-module-loader/wiki/System.register-Explained
+   *
+   * 2. System.registerDynamic for dynamic modules (3-4 params) - System.registerDynamic([name, ]deps, executingRequire, execute)
+   * the true or false statement 
+   *
+   * this extension implements the linking algorithm for the two variations identical to the spec
+   * allowing compiled ES6 circular references to work alongside AMD and CJS circular references.
+   *
+   */
+  SystemJSLoader.prototype.register = function(name, deps, declare) {
+    if (typeof name != 'string') {
+      declare = deps;
+      deps = name;
+      name = null;
+    }
+
+    // dynamic backwards-compatibility
+    // can be deprecated eventually
+    if (typeof declare == 'boolean')
+      return this.registerDynamic.apply(this, arguments);
+
+    var entry = createEntry();
+    // ideally wouldn't apply map config to bundle names but 
+    // dependencies go through map regardless so we can't restrict
+    // could reconsider in shift to new spec
+    entry.name = name && (this.decanonicalize || this.normalize).call(this, name);
+    entry.declarative = true;
+    entry.deps = deps;
+    entry.declare = declare;
+
+    this.pushRegister_({
+      amd: false,
+      entry: entry
+    });
+  };
+  SystemJSLoader.prototype.registerDynamic = function(name, deps, declare, execute) {
+    if (typeof name != 'string') {
+      execute = declare;
+      declare = deps;
+      deps = name;
+      name = null;
+    }
+
+    // dynamic
+    var entry = createEntry();
+    entry.name = name && (this.decanonicalize || this.normalize).call(this, name);
+    entry.deps = deps;
+    entry.execute = execute;
+    entry.executingRequire = declare;
+
+    this.pushRegister_({
+      amd: false,
+      entry: entry
+    });
+  };
+  hook('reduceRegister_', function() {
+    return function(load, register) {
+      if (!register)
+        return;
+
+      var entry = register.entry;
+      var curMeta = load && load.metadata;
+
+      // named register
+      if (entry.name) {
+        if (!(entry.name in this.defined))
+          this.defined[entry.name] = entry;
+
+        if (curMeta)
+          curMeta.bundle = true;
+      }
+      // anonymous register
+      if (!entry.name || load && !curMeta.entry && entry.name == load.name) {
+        if (!curMeta)
+          throw new TypeError('Invalid System.register call. Anonymous System.register calls can only be made by modules loaded by SystemJS.import and not via script tags.');
+        if (curMeta.entry) {
+          if (curMeta.format == 'register')
+            throw new Error('Multiple anonymous System.register calls in module ' + load.name + '. If loading a bundle, ensure all the System.register calls are named.');
+          else
+            throw new Error('Module ' + load.name + ' interpreted as ' + curMeta.format + ' module format, but called System.register.');
+        }
+        if (!curMeta.format)
+          curMeta.format = 'register';
+        curMeta.entry = entry;
+      }
+    };
+  });
+
+  hookConstructor(function(constructor) {
+    return function() {
+      constructor.call(this);
+
+      this.defined = {};
+      this._loader.moduleRecords = {};
+    };
+  });
+
+  function buildGroups(entry, loader, groups) {
+    groups[entry.groupIndex] = groups[entry.groupIndex] || [];
+
+    if (indexOf.call(groups[entry.groupIndex], entry) != -1)
+      return;
+
+    groups[entry.groupIndex].push(entry);
+
+    for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
+      var depName = entry.normalizedDeps[i];
+      var depEntry = loader.defined[depName];
+      
+      // not in the registry means already linked / ES6
+      if (!depEntry || depEntry.evaluated)
+        continue;
+      
+      // now we know the entry is in our unlinked linkage group
+      var depGroupIndex = entry.groupIndex + (depEntry.declarative != entry.declarative);
+
+      // the group index of an entry is always the maximum
+      if (depEntry.groupIndex === null || depEntry.groupIndex < depGroupIndex) {
+        
+        // if already in a group, remove from the old group
+        if (depEntry.groupIndex !== null) {
+          groups[depEntry.groupIndex].splice(indexOf.call(groups[depEntry.groupIndex], depEntry), 1);
+
+          // if the old group is empty, then we have a mixed depndency cycle
+          if (groups[depEntry.groupIndex].length == 0)
+            throw new Error("Mixed dependency cycle detected");
+        }
+
+        depEntry.groupIndex = depGroupIndex;
+      }
+
+      buildGroups(depEntry, loader, groups);
+    }
+  }
+
+  function link(name, startEntry, loader) {
+    // skip if already linked
+    if (startEntry.module)
+      return;
+
+    startEntry.groupIndex = 0;
+
+    var groups = [];
+
+    buildGroups(startEntry, loader, groups);
+
+    var curGroupDeclarative = !!startEntry.declarative == groups.length % 2;
+    for (var i = groups.length - 1; i >= 0; i--) {
+      var group = groups[i];
+      for (var j = 0; j < group.length; j++) {
+        var entry = group[j];
+
+        // link each group
+        if (curGroupDeclarative)
+          linkDeclarativeModule(entry, loader);
+        else
+          linkDynamicModule(entry, loader);
+      }
+      curGroupDeclarative = !curGroupDeclarative; 
+    }
+  }
+
+  // module binding records
+  function ModuleRecord() {}
+  defineProperty(ModuleRecord, 'toString', {
+    value: function() {
+      return 'Module';
+    }
+  });
+
+  function getOrCreateModuleRecord(name, moduleRecords) {
+    return moduleRecords[name] || (moduleRecords[name] = {
+      name: name,
+      dependencies: [],
+      exports: new ModuleRecord(), // start from an empty module and extend
+      importers: []
+    });
+  }
+
+  function linkDeclarativeModule(entry, loader) {
+    // only link if already not already started linking (stops at circular)
+    if (entry.module)
+      return;
+
+    var moduleRecords = loader._loader.moduleRecords;
+    var module = entry.module = getOrCreateModuleRecord(entry.name, moduleRecords);
+    var exports = entry.module.exports;
+
+    var declaration = entry.declare.call(__global, function(name, value) {
+      module.locked = true;
+
+      if (typeof name == 'object') {
+        for (var p in name)
+          exports[p] = name[p];
+      }
+      else {
+        exports[name] = value;
+      }
+
+      for (var i = 0, l = module.importers.length; i < l; i++) {
+        var importerModule = module.importers[i];
+        if (!importerModule.locked) {
+          var importerIndex = indexOf.call(importerModule.dependencies, module);
+          var setter = importerModule.setters[importerIndex];
+          if (setter)
+            setter(exports);
+        }
+      }
+
+      module.locked = false;
+      return value;
+    }, { id: entry.name });
+
+    if (typeof declaration == 'function')
+      declaration = { setters: [], execute: declaration };
+
+    // allowing undefined declaration was a mistake! To be deprecated.
+    declaration = declaration || { setters: [], execute: function() {} };
+    
+    module.setters = declaration.setters;
+    module.execute = declaration.execute;
+
+    if (!module.setters || !module.execute) {
+      throw new TypeError('Invalid System.register form for ' + entry.name);
+    }
+
+    // now link all the module dependencies
+    for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
+      var depName = entry.normalizedDeps[i];
+      var depEntry = loader.defined[depName];
+      var depModule = moduleRecords[depName];
+
+      // work out how to set depExports based on scenarios...
+      var depExports;
+
+      if (depModule) {
+        depExports = depModule.exports;
+      }
+      // dynamic, already linked in our registry
+      else if (depEntry && !depEntry.declarative) {
+        depExports = depEntry.esModule;
+      }
+      // in the loader registry
+      else if (!depEntry) {
+        depExports = loader.get(depName);
+      }
+      // we have an entry -> link
+      else {
+        linkDeclarativeModule(depEntry, loader);
+        depModule = depEntry.module;
+        depExports = depModule.exports;
+      }
+
+      // only declarative modules have dynamic bindings
+      if (depModule && depModule.importers) {
+        depModule.importers.push(module);
+        module.dependencies.push(depModule);
+      }
+      else {
+        module.dependencies.push(null);
+      }
+      
+      // run setters for all entries with the matching dependency name
+      var originalIndices = entry.originalIndices[i];
+      for (var j = 0, len = originalIndices.length; j < len; ++j) {
+        var index = originalIndices[j];
+        if (module.setters[index]) {
+          module.setters[index](depExports);
+        }
+      }
+    }
+  }
+
+  // An analog to loader.get covering execution of all three layers (real declarative, simulated declarative, simulated dynamic)
+  function getModule(name, loader) {
+    var exports;
+    var entry = loader.defined[name];
+
+    if (!entry) {
+      exports = loader.get(name);
+      if (!exports)
+        throw new Error('Unable to load dependency ' + name + '.');
+    }
+
+    else {
+      if (entry.declarative)
+        ensureEvaluated(name, entry, [], loader);
+    
+      else if (!entry.evaluated)
+        linkDynamicModule(entry, loader);
+
+      exports = entry.module.exports;
+    }
+
+    if ((!entry || entry.declarative) && exports && exports.__useDefault)
+      return exports['default'];
+    
+    return exports;
+  }
+
+  function linkDynamicModule(entry, loader) {
+    if (entry.module)
+      return;
+
+    var exports = {};
+
+    var module = entry.module = { exports: exports, id: entry.name };
+
+    // AMD requires execute the tree first
+    if (!entry.executingRequire) {
+      for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
+        var depName = entry.normalizedDeps[i];
+        // we know we only need to link dynamic due to linking algorithm
+        var depEntry = loader.defined[depName];
+        if (depEntry)
+          linkDynamicModule(depEntry, loader);
+      }
+    }
+
+    // now execute
+    entry.evaluated = true;
+    var output = entry.execute.call(__global, function(name) {
+      for (var i = 0, l = entry.deps.length; i < l; i++) {
+        if (entry.deps[i] != name)
+          continue;
+        return getModule(entry.normalizedDeps[i], loader);
+      }
+      // try and normalize the dependency to see if we have another form
+      var nameNormalized = loader.normalizeSync(name, entry.name);
+      if (indexOf.call(entry.normalizedDeps, nameNormalized) != -1)
+        return getModule(nameNormalized, loader);
+
+      throw new Error('Module ' + name + ' not declared as a dependency of ' + entry.name);
+    }, exports, module);
+    
+    if (output !== undefined)
+      module.exports = output;
+
+    // create the esModule object, which allows ES6 named imports of dynamics
+    exports = module.exports;
+
+    // __esModule flag treats as already-named
+    if (exports && (exports.__esModule || exports instanceof Module))
+      entry.esModule = loader.newModule(exports);
+    // set module as 'default' export, then fake named exports by iterating properties
+    else if (entry.esmExports && exports !== __global)
+      entry.esModule = loader.newModule(getESModule(exports));
+    // just use the 'default' export
+    else
+      entry.esModule = loader.newModule({ 'default': exports, __useDefault: true });
+  }
+
+  /*
+   * Given a module, and the list of modules for this current branch,
+   *  ensure that each of the dependencies of this module is evaluated
+   *  (unless one is a circular dependency already in the list of seen
+   *  modules, in which case we execute it)
+   *
+   * Then we evaluate the module itself depth-first left to right 
+   * execution to match ES6 modules
+   */
+  function ensureEvaluated(moduleName, entry, seen, loader) {
+    // if already seen, that means it's an already-evaluated non circular dependency
+    if (!entry || entry.evaluated || !entry.declarative)
+      return;
+
+    // this only applies to declarative modules which late-execute
+
+    seen.push(moduleName);
+
+    for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
+      var depName = entry.normalizedDeps[i];
+      if (indexOf.call(seen, depName) == -1) {
+        if (!loader.defined[depName])
+          loader.get(depName);
+        else
+          ensureEvaluated(depName, loader.defined[depName], seen, loader);
+      }
+    }
+
+    if (entry.evaluated)
+      return;
+
+    entry.evaluated = true;
+    entry.module.execute.call(__global);
+  }
+
+  // override the delete method to also clear the register caches
+  hook('delete', function(del) {
+    return function(name) {
+      delete this._loader.moduleRecords[name];
+      delete this.defined[name];
+      return del.call(this, name);
+    };
+  });
+
+  hook('fetch', function(fetch) {
+    return function(load) {
+      if (this.defined[load.name]) {
+        load.metadata.format = 'defined';
+        return '';
+      }
+
+      load.metadata.deps = load.metadata.deps || [];
+      
+      return fetch.call(this, load);
+    };
+  });
+
+  hook('translate', function(translate) {
+    // we run the meta detection here (register is after meta)
+    return function(load) {
+      load.metadata.deps = load.metadata.deps || [];
+      return Promise.resolve(translate.apply(this, arguments)).then(function(source) {
+        // run detection for register format
+        if (load.metadata.format == 'register' || !load.metadata.format && detectRegisterFormat(load.source))
+          load.metadata.format = 'register';
+        return source;
+      });
+    };
+  });
+
+  // implement a perforance shortpath for System.load with no deps
+  hook('load', function(doLoad) {
+    return function(normalized) {
+      var loader = this;
+      var entry = loader.defined[normalized];
+
+      if (!entry || entry.deps.length)
+        return doLoad.apply(this, arguments);
+
+      entry.originalIndices = entry.normalizedDeps = [];
+
+      // recursively ensure that the module and all its 
+      // dependencies are linked (with dependency group handling)
+      link(normalized, entry, loader);
+
+      // now handle dependency execution in correct order
+      ensureEvaluated(normalized, entry, [], loader);
+      if (!entry.esModule)
+        entry.esModule = loader.newModule(entry.module.exports);
+
+      // remove from the registry
+      if (!loader.trace)
+        loader.defined[normalized] = undefined;
+
+      // return the defined module object
+      loader.set(normalized, entry.esModule);
+
+      return Promise.resolve();
+    };
+  });
+
+  hook('instantiate', function(instantiate) {
+    return function(load) {
+      if (load.metadata.format == 'detect')
+        load.metadata.format = undefined;
+
+      // assumes previous instantiate is sync
+      // (core json support)
+      instantiate.call(this, load);
+
+      var loader = this;
+
+      var entry;
+
+      // first we check if this module has already been defined in the registry
+      if (loader.defined[load.name]) {
+        entry = loader.defined[load.name];
+        // don't support deps for ES modules
+        if (!entry.declarative)
+          entry.deps = entry.deps.concat(load.metadata.deps);
+        entry.deps = entry.deps.concat(load.metadata.deps);
+      }
+
+      // picked up already by an anonymous System.register script injection
+      // or via the dynamic formats
+      else if (load.metadata.entry) {
+        entry = load.metadata.entry;
+        entry.deps = entry.deps.concat(load.metadata.deps);
+      }
+
+      // Contains System.register calls
+      // (dont run bundles in the builder)
+      else if (!(loader.builder && load.metadata.bundle) 
+          && (load.metadata.format == 'register' || load.metadata.format == 'esm' || load.metadata.format == 'es6')) {
+        
+        if (typeof __exec != 'undefined')
+          __exec.call(loader, load);
+
+        if (!load.metadata.entry && !load.metadata.bundle)
+          throw new Error(load.name + ' detected as ' + load.metadata.format + ' but didn\'t execute.');
+
+        entry = load.metadata.entry;
+
+        // support metadata deps for System.register
+        if (entry && load.metadata.deps)
+          entry.deps = entry.deps.concat(load.metadata.deps);
+      }
+
+      // named bundles are just an empty module
+      if (!entry) {
+        entry = createEntry();
+        entry.deps = load.metadata.deps;
+        entry.execute = function() {};
+      }
+
+      // place this module onto defined for circular references
+      loader.defined[load.name] = entry;
+      
+      var grouped = group(entry.deps);
+      
+      entry.deps = grouped.names;
+      entry.originalIndices = grouped.indices;
+      entry.name = load.name;
+      entry.esmExports = load.metadata.esmExports !== false;
+
+      // first, normalize all dependencies
+      var normalizePromises = [];
+      for (var i = 0, l = entry.deps.length; i < l; i++)
+        normalizePromises.push(Promise.resolve(loader.normalize(entry.deps[i], load.name)));
+
+      return Promise.all(normalizePromises).then(function(normalizedDeps) {
+
+        entry.normalizedDeps = normalizedDeps;
+
+        return {
+          deps: entry.deps,
+          execute: function() {
+            // recursively ensure that the module and all its 
+            // dependencies are linked (with dependency group handling)
+            link(load.name, entry, loader);
+
+            // now handle dependency execution in correct order
+            ensureEvaluated(load.name, entry, [], loader);
+
+            if (!entry.esModule)
+              entry.esModule = loader.newModule(entry.module.exports);
+
+            // remove from the registry
+            if (!loader.trace)
+              loader.defined[load.name] = undefined;
+
+            // return the defined module object
+            return entry.esModule;
+          }
+        };
+      });
+    };
+  });
+})();
+
+
+function getGlobalValue(exports) {
+  if (typeof exports == 'string')
+    return readMemberExpression(exports, __global);
+
+  if (!(exports instanceof Array))
+    throw new Error('Global exports must be a string or array.');
+
+  var globalValue = {};
+  var first = true;
+  for (var i = 0; i < exports.length; i++) {
+    var val = readMemberExpression(exports[i], __global);
+    if (first) {
+      globalValue['default'] = val;
+      first = false;
+    }
+    globalValue[exports[i].split('.').pop()] = val;
+  }
+  return globalValue;
+}
+
+hook('reduceRegister_', function(reduceRegister) {
+  return function(load, register) {
+    if (register || (!load.metadata.exports && !(isWorker && load.metadata.format == 'global')))
+      return reduceRegister.call(this, load, register);
+
+    load.metadata.format = 'global';
+    var entry = load.metadata.entry = createEntry();
+    entry.deps = load.metadata.deps;
+    var globalValue = getGlobalValue(load.metadata.exports);
+    entry.execute = function() {
+      return globalValue;
+    };
+  };
+});
+
+hookConstructor(function(constructor) {
+  return function() {
+    var loader = this;
+    constructor.call(loader);
+
+    var hasOwnProperty = Object.prototype.hasOwnProperty;
+
+    // bare minimum ignores
+    var ignoredGlobalProps = ['_g', 'sessionStorage', 'localStorage', 'clipboardData', 'frames', 'frameElement', 'external', 
+      'mozAnimationStartTime', 'webkitStorageInfo', 'webkitIndexedDB', 'mozInnerScreenY', 'mozInnerScreenX'];
+
+    var globalSnapshot;
+
+    function forEachGlobal(callback) {
+      if (Object.keys)
+        Object.keys(__global).forEach(callback);
+      else
+        for (var g in __global) {
+          if (!hasOwnProperty.call(__global, g))
+            continue;
+          callback(g);
+        }
+    }
+
+    function forEachGlobalValue(callback) {
+      forEachGlobal(function(globalName) {
+        if (indexOf.call(ignoredGlobalProps, globalName) != -1)
+          return;
+        try {
+          var value = __global[globalName];
+        }
+        catch (e) {
+          ignoredGlobalProps.push(globalName);
+        }
+        callback(globalName, value);
+      });
+    }
+
+    loader.set('@@global-helpers', loader.newModule({
+      prepareGlobal: function(moduleName, exports, globals, encapsulate) {
+        // disable module detection
+        var curDefine = __global.define;
+        
+        __global.define = undefined;
+
+        // set globals
+        var oldGlobals;
+        if (globals) {
+          oldGlobals = {};
+          for (var g in globals) {
+            oldGlobals[g] = __global[g];
+            __global[g] = globals[g];
+          }
+        }
+
+        // store a complete copy of the global object in order to detect changes
+        if (!exports) {
+          globalSnapshot = {};
+
+          forEachGlobalValue(function(name, value) {
+            globalSnapshot[name] = value;
+          });
+        }
+
+        // return function to retrieve global
+        return function() {
+          var globalValue = exports ? getGlobalValue(exports) : {};
+
+          var singleGlobal;
+          var multipleExports = !!exports;
+
+          if (!exports || encapsulate)
+            forEachGlobalValue(function(name, value) {
+              if (globalSnapshot[name] === value)
+                return;
+              if (typeof value == 'undefined')
+                return;
+              
+              // allow global encapsulation where globals are removed
+              if (encapsulate)
+                __global[name] = undefined;
+
+              if (!exports) {
+                globalValue[name] = value;
+
+                if (typeof singleGlobal != 'undefined') {
+                  if (!multipleExports && singleGlobal !== value)
+                    multipleExports = true;
+                }
+                else {
+                  singleGlobal = value;
+                }
+              }
+            });
+
+          globalValue = multipleExports ? globalValue : singleGlobal;
+
+          // revert globals
+          if (oldGlobals) {
+            for (var g in oldGlobals)
+              __global[g] = oldGlobals[g];
+          }
+          __global.define = curDefine;
+
+          return globalValue;
+        };
+      }
+    }));
+  };
+});
+hookConstructor(function(constructor) {
+  return function() {
+    var loader = this;
+    constructor.call(loader);
+
+    if (typeof window != 'undefined' && typeof document != 'undefined' && window.location)
+      var windowOrigin = location.protocol + '//' + location.hostname + (location.port ? ':' + location.port : '');
+
+    function stripOrigin(path) {
+      if (path.substr(0, 8) == 'file:///')
+        return path.substr(7 + !!isWindows);
+      
+      if (windowOrigin && path.substr(0, windowOrigin.length) == windowOrigin)
+        return path.substr(windowOrigin.length);
+
+      return path;
+    }
+
+    loader.set('@@cjs-helpers', loader.newModule({
+      requireResolve: function(request, parentId) {
+        return stripOrigin(loader.normalizeSync(request, parentId));
+      },
+      getPathVars: function(moduleId) {
+        // remove any plugin syntax
+        var pluginIndex = moduleId.lastIndexOf('!');
+        var filename;
+        if (pluginIndex != -1)
+          filename = moduleId.substr(0, pluginIndex);
+        else
+          filename = moduleId;
+
+        var dirname = filename.split('/');
+        dirname.pop();
+        dirname = dirname.join('/');
+
+        return {
+          filename: stripOrigin(filename),
+          dirname: stripOrigin(dirname)
+        };
+      }
+    }))
+  };
+});/*
+ * AMD Helper function module
+ * Separated into its own file as this is the part needed for full AMD support in SFX builds
+ * NB since implementations have now diverged this can be merged back with amd.js
+ */
+
+hook('fetch', function(fetch) {
+  return function(load) {
+    // script load implies define global leak
+    if (load.metadata.scriptLoad && isBrowser)
+      __global.define = this.amdDefine;
+    return fetch.call(this, load);
+  };
+});
+ 
+hookConstructor(function(constructor) {
+  return function() {
+    var loader = this;
+    constructor.call(this);
+
+    var commentRegEx = /(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg;
+    var cjsRequirePre = "(?:^|[^$_a-zA-Z\\xA0-\\uFFFF.])";
+    var cjsRequirePost = "\\s*\\(\\s*(\"([^\"]+)\"|'([^']+)')\\s*\\)";
+    var fnBracketRegEx = /\(([^\)]*)\)/;
+    var wsRegEx = /^\s+|\s+$/g;
+    
+    var requireRegExs = {};
+
+    function getCJSDeps(source, requireIndex) {
+
+      // remove comments
+      source = source.replace(commentRegEx, '');
+
+      // determine the require alias
+      var params = source.match(fnBracketRegEx);
+      var requireAlias = (params[1].split(',')[requireIndex] || 'require').replace(wsRegEx, '');
+
+      // find or generate the regex for this requireAlias
+      var requireRegEx = requireRegExs[requireAlias] || (requireRegExs[requireAlias] = new RegExp(cjsRequirePre + requireAlias + cjsRequirePost, 'g'));
+
+      requireRegEx.lastIndex = 0;
+
+      var deps = [];
+
+      var match;
+      while (match = requireRegEx.exec(source))
+        deps.push(match[2] || match[3]);
+
+      return deps;
+    }
+
+    /*
+      AMD-compatible require
+      To copy RequireJS, set window.require = window.requirejs = loader.amdRequire
+    */
+    function require(names, callback, errback, referer) {
+      // in amd, first arg can be a config object... we just ignore
+      if (typeof names == 'object' && !(names instanceof Array))
+        return require.apply(null, Array.prototype.splice.call(arguments, 1, arguments.length - 1));
+
+      // amd require
+      if (typeof names == 'string' && typeof callback == 'function')
+        names = [names];
+      if (names instanceof Array) {
+        var dynamicRequires = [];
+        for (var i = 0; i < names.length; i++)
+          dynamicRequires.push(loader['import'](names[i], referer));
+        Promise.all(dynamicRequires).then(function(modules) {
+          if (callback)
+            callback.apply(null, modules);
+        }, errback);
+      }
+
+      // commonjs require
+      else if (typeof names == 'string') {
+        var defaultJSExtension = loader.defaultJSExtensions && names.substr(names.length - 3, 3) != '.js';
+        var normalized = loader.decanonicalize(names, referer);
+        if (defaultJSExtension && normalized.substr(normalized.length - 3, 3) == '.js')
+          normalized = normalized.substr(0, normalized.length - 3);
+        var module = loader.get(normalized);
+        if (!module)
+          throw new Error('Module not already loaded loading "' + names + '" as ' + normalized + (referer ? ' from "' + referer + '".' : '.'));
+        return module.__useDefault ? module['default'] : module;
+      }
+
+      else
+        throw new TypeError('Invalid require');
+    }
+
+    function define(name, deps, factory) {
+      if (typeof name != 'string') {
+        factory = deps;
+        deps = name;
+        name = null;
+      }
+      if (!(deps instanceof Array)) {
+        factory = deps;
+        deps = ['require', 'exports', 'module'].splice(0, factory.length);
+      }
+
+      if (typeof factory != 'function')
+        factory = (function(factory) {
+          return function() { return factory; }
+        })(factory);
+
+      // in IE8, a trailing comma becomes a trailing undefined entry
+      if (deps[deps.length - 1] === undefined)
+        deps.pop();
+
+      // remove system dependencies
+      var requireIndex, exportsIndex, moduleIndex;
+      
+      if ((requireIndex = indexOf.call(deps, 'require')) != -1) {
+        
+        deps.splice(requireIndex, 1);
+
+        // only trace cjs requires for non-named
+        // named defines assume the trace has already been done
+        if (!name)
+          deps = deps.concat(getCJSDeps(factory.toString(), requireIndex));
+      }
+
+      if ((exportsIndex = indexOf.call(deps, 'exports')) != -1)
+        deps.splice(exportsIndex, 1);
+      
+      if ((moduleIndex = indexOf.call(deps, 'module')) != -1)
+        deps.splice(moduleIndex, 1);
+
+      function execute(req, exports, module) {
+        var depValues = [];
+        for (var i = 0; i < deps.length; i++)
+          depValues.push(req(deps[i]));
+
+        module.uri = module.id;
+
+        module.config = function() {};
+
+        // add back in system dependencies
+        if (moduleIndex != -1)
+          depValues.splice(moduleIndex, 0, module);
+        
+        if (exportsIndex != -1)
+          depValues.splice(exportsIndex, 0, exports);
+        
+        if (requireIndex != -1) {
+          function contextualRequire(names, callback, errback) {
+            if (typeof names == 'string' && typeof callback != 'function')
+              return req(names);
+            return require.call(loader, names, callback, errback, module.id);
+          }
+          contextualRequire.toUrl = function(name) {
+            // normalize without defaultJSExtensions
+            var defaultJSExtension = loader.defaultJSExtensions && name.substr(name.length - 3, 3) != '.js';
+            var url = loader.decanonicalize(name, module.id);
+            if (defaultJSExtension && url.substr(url.length - 3, 3) == '.js')
+              url = url.substr(0, url.length - 3);
+            return url;
+          };
+          depValues.splice(requireIndex, 0, contextualRequire);
+        }
+
+        // set global require to AMD require
+        var curRequire = __global.require;
+        __global.require = require;
+
+        var output = factory.apply(exportsIndex == -1 ? __global : exports, depValues);
+
+        __global.require = curRequire;
+
+        if (typeof output == 'undefined' && module)
+          output = module.exports;
+
+        if (typeof output != 'undefined')
+          return output;
+      }
+
+      var entry = createEntry();
+      entry.name = name && (loader.decanonicalize || loader.normalize).call(loader, name);
+      entry.deps = deps;
+      entry.execute = execute;
+
+      loader.pushRegister_({
+        amd: true,
+        entry: entry
+      });
+    }
+    define.amd = {};
+
+    // reduction function to attach defines to a load record
+    hook('reduceRegister_', function(reduceRegister) {
+      return function(load, register) {
+        // only handle AMD registers here
+        if (!register || !register.amd)
+          return reduceRegister.call(this, load, register);
+
+        var curMeta = load && load.metadata;
+        var entry = register.entry;
+
+        if (curMeta) {
+          if (!curMeta.format || curMeta.format == 'detect')
+            curMeta.format = 'amd';
+          else if (!entry.name && curMeta.format != 'amd')
+            throw new Error('AMD define called while executing ' + curMeta.format + ' module ' + load.name);
+        }
+
+        // anonymous define
+        if (!entry.name) {
+          if (!curMeta)
+            throw new TypeError('Unexpected anonymous AMD define.');
+
+          if (curMeta.entry && !curMeta.entry.name)
+            throw new Error('Multiple anonymous defines in module ' + load.name);
+          
+          curMeta.entry = entry;
+        }
+        // named define
+        else {
+          // if we don't have any other defines, 
+          // then let this be an anonymous define
+          // this is just to support single modules of the form:
+          // define('jquery')
+          // still loading anonymously
+          // because it is done widely enough to be useful
+          // as soon as there is more than one define, this gets removed though
+          if (curMeta) {
+            if (!curMeta.entry && !curMeta.bundle)
+              curMeta.entry = entry;
+            else if (curMeta.entry && curMeta.entry.name && curMeta.entry.name != load.name)
+              curMeta.entry = undefined;
+
+            // note this is now a bundle
+            curMeta.bundle = true;
+          }
+
+          // define the module through the register registry
+          if (!(entry.name in this.defined))
+            this.defined[entry.name] = entry;
+        }
+      };
+    });
+
+    loader.amdDefine = define;
+    loader.amdRequire = require;
+  };
+});/*
+  SystemJS Loader Plugin Support
+
+  Supports plugin loader syntax with "!", or via metadata.loader
+
+  The plugin name is loaded as a module itself, and can override standard loader hooks
+  for the plugin resource. See the plugin section of the systemjs readme.
+*/
+
+(function() {
+  function getParentName(loader, parentName) {
+    // if parent is a plugin, normalize against the parent plugin argument only
+    if (parentName) {
+      var parentPluginIndex;
+      if (loader.pluginFirst) {
+        if ((parentPluginIndex = parentName.lastIndexOf('!')) != -1)
+          return parentName.substr(parentPluginIndex + 1);
+      }
+      else {
+        if ((parentPluginIndex = parentName.indexOf('!')) != -1)
+          return parentName.substr(0, parentPluginIndex);
+      }
+
+      return parentName;
+    }
+  }
+
+  function parsePlugin(loader, name) {
+    var argumentName;
+    var pluginName;
+
+    var pluginIndex = name.lastIndexOf('!');
+
+    if (pluginIndex == -1)
+      return;
+
+    if (loader.pluginFirst) {
+      argumentName = name.substr(pluginIndex + 1);
+      pluginName = name.substr(0, pluginIndex);
+    }
+    else {
+      argumentName = name.substr(0, pluginIndex);
+      pluginName = name.substr(pluginIndex + 1) || argumentName.substr(argumentName.lastIndexOf('.') + 1);
+    }
+
+    return {
+      argument: argumentName,
+      plugin: pluginName
+    };
+  }
+
+  // put name back together after parts have been normalized
+  function combinePluginParts(loader, argumentName, pluginName, defaultExtension) {
+    if (defaultExtension && argumentName.substr(argumentName.length - 3, 3) == '.js')
+      argumentName = argumentName.substr(0, argumentName.length - 3);
+
+    if (loader.pluginFirst) {
+      return pluginName + '!' + argumentName;
+    }
+    else {
+      return argumentName + '!' + pluginName;
+    }
+  }
+
+  // note if normalize will add a default js extension
+  // if so, remove for backwards compat
+  // this is strange and sucks, but will be deprecated
+  function checkDefaultExtension(loader, arg) {
+    return loader.defaultJSExtensions && arg.substr(arg.length - 3, 3) != '.js'; 
+  }
+
+  function createNormalizeSync(normalizeSync) {
+    return function(name, parentName, isPlugin) {
+      var loader = this;
+      
+      var parsed = parsePlugin(loader, name);
+      parentName = getParentName(this, parentName);
+
+      if (!parsed)
+        return normalizeSync.call(this, name, parentName, isPlugin);
+
+      // if this is a plugin, normalize the plugin name and the argument
+      var argumentName = loader.normalizeSync(parsed.argument, parentName, true);
+      var pluginName = loader.normalizeSync(parsed.plugin, parentName, true);
+      return combinePluginParts(loader, argumentName, pluginName, checkDefaultExtension(loader, parsed.argument));
+    };
+  }
+  
+  hook('decanonicalize', createNormalizeSync);
+  hook('normalizeSync', createNormalizeSync);
+
+  hook('normalize', function(normalize) {
+    return function(name, parentName, isPlugin) {
+      var loader = this;
+
+      parentName = getParentName(this, parentName);
+
+      var parsed = parsePlugin(loader, name);
+
+      if (!parsed)
+        return normalize.call(loader, name, parentName, isPlugin);
+
+      return Promise.all([
+        loader.normalize(parsed.argument, parentName, true),
+        loader.normalize(parsed.plugin, parentName, false)
+      ])
+      .then(function(normalized) {
+        return combinePluginParts(loader, normalized[0], normalized[1], checkDefaultExtension(loader, parsed.argument));
+      });
+    }
+  });
+
+  hook('locate', function(locate) {
+    return function(load) {
+      var loader = this;
+
+      var name = load.name;
+
+      // plugin syntax
+      var pluginSyntaxIndex;
+      if (loader.pluginFirst) {
+        if ((pluginSyntaxIndex = name.indexOf('!')) != -1) {
+          load.metadata.loader = name.substr(0, pluginSyntaxIndex);
+          load.name = name.substr(pluginSyntaxIndex + 1);
+        }
+      }
+      else {
+        if ((pluginSyntaxIndex = name.lastIndexOf('!')) != -1) {
+          load.metadata.loader = name.substr(pluginSyntaxIndex + 1);
+          load.name = name.substr(0, pluginSyntaxIndex);
+        }
+      }
+
+      return locate.call(loader, load)
+      .then(function(address) {
+        if (pluginSyntaxIndex != -1 || !load.metadata.loader)
+          return address;
+
+        // normalize plugin relative to parent in locate here when
+        // using plugin via loader metadata
+        return (loader.pluginLoader || loader).normalize(load.metadata.loader, load.name)
+        .then(function(loaderNormalized) {
+          load.metadata.loader = loaderNormalized;
+          return address;
+        });
+      })
+      .then(function(address) {
+        var plugin = load.metadata.loader;
+
+        if (!plugin)
+          return address;
+
+        // don't allow a plugin to load itself
+        if (load.name == plugin)
+          throw new Error('Plugin ' + plugin + ' cannot load itself, make sure it is excluded from any wildcard meta configuration via a custom loader: false rule.');
+
+        // only fetch the plugin itself if this name isn't defined
+        if (loader.defined && loader.defined[name])
+          return address;
+
+        var pluginLoader = loader.pluginLoader || loader;
+
+        // load the plugin module and run standard locate
+        return pluginLoader['import'](plugin)
+        .then(function(loaderModule) {
+          // store the plugin module itself on the metadata
+          load.metadata.loaderModule = loaderModule;
+
+          load.address = address;
+          if (loaderModule.locate)
+            return loaderModule.locate.call(loader, load);
+
+          return address;
+        });
+      });
+    };
+  });
+
+  hook('fetch', function(fetch) {
+    return function(load) {
+      var loader = this;
+      if (load.metadata.loaderModule && load.metadata.loaderModule.fetch && load.metadata.format != 'defined') {
+        load.metadata.scriptLoad = false;
+        return load.metadata.loaderModule.fetch.call(loader, load, function(load) {
+          return fetch.call(loader, load);
+        });
+      }
+      else {
+        return fetch.call(loader, load);
+      }
+    };
+  });
+
+  hook('translate', function(translate) {
+    return function(load) {
+      var loader = this;
+      var args = arguments;
+      if (load.metadata.loaderModule && load.metadata.loaderModule.translate && load.metadata.format != 'defined') {
+        return Promise.resolve(load.metadata.loaderModule.translate.apply(loader, args)).then(function(result) {
+          var sourceMap = load.metadata.sourceMap;
+
+          // sanitize sourceMap if an object not a JSON string
+          if (sourceMap) {
+            if (typeof sourceMap != 'object')
+              throw new Error('load.metadata.sourceMap must be set to an object.');
+
+            var originalName = load.address.split('!')[0];
+            
+            // force set the filename of the original file
+            if (!sourceMap.file || sourceMap.file == load.address)
+              sourceMap.file = originalName + '!transpiled';
+
+            // force set the sources list if only one source
+            if (!sourceMap.sources || sourceMap.sources.length <= 1 && (!sourceMap.sources[0] || sourceMap.sources[0] == load.address))
+              sourceMap.sources = [originalName];
+          }
+
+          // if running on file:/// URLs, sourcesContent is necessary
+          // load.metadata.sourceMap.sourcesContent = [load.source];
+
+          if (typeof result == 'string')
+            load.source = result;
+          else
+            warn.call(this, 'Plugin ' + load.metadata.loader + ' should return the source in translate, instead of setting load.source directly. This support will be deprecated.');
+
+          return translate.apply(loader, args);
+        });
+      }
+      else {
+        return translate.apply(loader, args);
+      }
+    };
+  });
+
+  hook('instantiate', function(instantiate) {
+    return function(load) {
+      var loader = this;
+      var calledInstantiate = false;
+
+      if (load.metadata.loaderModule && load.metadata.loaderModule.instantiate && !loader.builder && load.metadata.format != 'defined')
+        return Promise.resolve(load.metadata.loaderModule.instantiate.call(loader, load, function(load) {
+          if (calledInstantiate)
+            throw new Error('Instantiate must only be called once.');
+          calledInstantiate = true;
+          return instantiate.call(loader, load);
+        })).then(function(result) {
+          if (calledInstantiate)
+            return result;
+
+          load.metadata.entry = createEntry();
+          load.metadata.entry.execute = function() {
+            return result;
+          }
+          load.metadata.entry.deps = load.metadata.deps;
+          load.metadata.format = 'defined';
+          return instantiate.call(loader, load);
+        });
+      else
+        return instantiate.call(loader, load);
+    };
+  });
+
+})();/*
+ * Conditions Extension
+ *
+ *   Allows a condition module to alter the resolution of an import via syntax:
+ *
+ *     import $ from 'jquery/#{browser}';
+ *
+ *   Will first load the module 'browser' via `SystemJS.import('browser')` and 
+ *   take the default export of that module.
+ *   If the default export is not a string, an error is thrown.
+ * 
+ *   We then substitute the string into the require to get the conditional resolution
+ *   enabling environment-specific variations like:
+ * 
+ *     import $ from 'jquery/ie'
+ *     import $ from 'jquery/firefox'
+ *     import $ from 'jquery/chrome'
+ *     import $ from 'jquery/safari'
+ *
+ *   It can be useful for a condition module to define multiple conditions.
+ *   This can be done via the `|` modifier to specify an export member expression:
+ *
+ *     import 'jquery/#{./browser.js|grade.version}'
+ *
+ *   Where the `grade` export `version` member in the `browser.js` module  is substituted.
+ *
+ *
+ * Boolean Conditionals
+ *
+ *   For polyfill modules, that are used as imports but have no module value,
+ *   a binary conditional allows a module not to be loaded at all if not needed:
+ *
+ *     import 'es5-shim#?./conditions.js|needs-es5shim'
+ *
+ *   These conditions can also be negated via:
+ *     
+ *     import 'es5-shim#?./conditions.js|~es6'
+ *
+ */
+
+  var sysConditions = ['browser', 'node', 'dev', 'build', 'production', 'default'];
+
+  function parseCondition(condition) {
+    var conditionExport, conditionModule, negation;
+
+    var negation = condition[0] == '~';
+    var conditionExportIndex = condition.lastIndexOf('|');
+    if (conditionExportIndex != -1) {
+      conditionExport = condition.substr(conditionExportIndex + 1);
+      conditionModule = condition.substr(negation, conditionExportIndex - negation);
+      
+      if (negation)
+        warn.call(this, 'Condition negation form "' + condition + '" is deprecated for "' + conditionModule + '|~' + conditionExport + '"');
+
+      if (conditionExport[0] == '~') {
+        negation = true;
+        conditionExport = conditionExport.substr(1);
+      }
+    }
+    else {
+      conditionExport = 'default';
+      conditionModule = condition.substr(negation);
+      if (sysConditions.indexOf(conditionModule) != -1) {
+        conditionExport = conditionModule;
+        conditionModule = null;
+      }
+    }
+
+    return {
+      module: conditionModule || '@system-env',
+      prop: conditionExport,
+      negate: negation
+    };
+  }
+
+  function serializeCondition(conditionObj) {
+    return conditionObj.module + '|' + (conditionObj.negate ? '~' : '') + conditionObj.prop;
+  }
+
+  function resolveCondition(conditionObj, parentName, bool) {
+    var self = this;
+    return this.normalize(conditionObj.module, parentName)
+    .then(function(normalizedCondition) {
+      return self.load(normalizedCondition)
+      .then(function(q) {
+        var m = readMemberExpression(conditionObj.prop, self.get(normalizedCondition));
+
+        if (bool && typeof m != 'boolean')
+          throw new TypeError('Condition ' + serializeCondition(conditionObj) + ' did not resolve to a boolean.');
+
+        return conditionObj.negate ? !m : m;
+      });
+    });
+  }
+
+  var interpolationRegEx = /#\{[^\}]+\}/;
+  function interpolateConditional(name, parentName) {
+    // first we normalize the conditional
+    var conditionalMatch = name.match(interpolationRegEx);
+
+    if (!conditionalMatch)
+      return Promise.resolve(name);
+
+    var conditionObj = parseCondition.call(this, conditionalMatch[0].substr(2, conditionalMatch[0].length - 3));
+
+    // in builds, return normalized conditional
+    if (this.builder)
+      return this['normalize'](conditionObj.module, parentName)
+      .then(function(conditionModule) {
+        conditionObj.module = conditionModule;
+        return name.replace(interpolationRegEx, '#{' + serializeCondition(conditionObj) + '}');
+      });
+
+    return resolveCondition.call(this, conditionObj, parentName, false)
+    .then(function(conditionValue) {
+      if (typeof conditionValue !== 'string')
+        throw new TypeError('The condition value for ' + name + ' doesn\'t resolve to a string.');
+
+      if (conditionValue.indexOf('/') != -1)
+        throw new TypeError('Unabled to interpolate conditional ' + name + (parentName ? ' in ' + parentName : '') + '\n\tThe condition value ' + conditionValue + ' cannot contain a "/" separator.');
+
+      return name.replace(interpolationRegEx, conditionValue);
+    });
+  }
+
+  function booleanConditional(name, parentName) {
+    // first we normalize the conditional
+    var booleanIndex = name.lastIndexOf('#?');
+
+    if (booleanIndex == -1)
+      return Promise.resolve(name);
+
+    var conditionObj = parseCondition.call(this, name.substr(booleanIndex + 2));
+
+    // in builds, return normalized conditional
+    if (this.builder)
+      return this['normalize'](conditionObj.module, parentName)
+      .then(function(conditionModule) {
+        conditionObj.module = conditionModule;
+        return name.substr(0, booleanIndex) + '#?' + serializeCondition(conditionObj);
+      });
+
+    return resolveCondition.call(this, conditionObj, parentName, true)
+    .then(function(conditionValue) {
+      return conditionValue ? name.substr(0, booleanIndex) : '@empty';
+    });
+  }
+
+  // normalizeSync does not parse conditionals at all although it could
+  hook('normalize', function(normalize) {
+    return function(name, parentName, skipExt) {
+      var loader = this;
+      return booleanConditional.call(loader, name, parentName)
+      .then(function(name) {
+        return normalize.call(loader, name, parentName, skipExt);
+      })
+      .then(function(normalized) {
+        return interpolateConditional.call(loader, normalized, parentName);
+      });
+    };
+  });
+/*
+ * Alias Extension
+ *
+ * Allows a module to be a plain copy of another module by module name
+ *
+ * SystemJS.meta['mybootstrapalias'] = { alias: 'bootstrap' };
+ *
+ */
+(function() {
+  // aliases
+  hook('fetch', function(fetch) {
+    return function(load) {
+      var alias = load.metadata.alias;
+      var aliasDeps = load.metadata.deps || [];
+      if (alias) {
+        load.metadata.format = 'defined';
+        var entry = createEntry();
+        this.defined[load.name] = entry;
+        entry.declarative = true;
+        entry.deps = aliasDeps.concat([alias]);
+        entry.declare = function(_export) {
+          return {
+            setters: [function(module) {
+              for (var p in module)
+                _export(p, module[p]);
+              if (module.__useDefault)
+                entry.module.exports.__useDefault = true;
+            }],
+            execute: function() {}
+          };
+        };
+        return '';
+      }
+
+      return fetch.call(this, load);
+    };
+  });
+})();/*
+ * Meta Extension
+ *
+ * Sets default metadata on a load record (load.metadata) from
+ * loader.metadata via SystemJS.meta function.
+ *
+ *
+ * Also provides an inline meta syntax for module meta in source.
+ *
+ * Eg:
+ *
+ * loader.meta({
+ *   'my/module': { deps: ['jquery'] }
+ *   'my/*': { format: 'amd' }
+ * });
+ *
+ * Which in turn populates loader.metadata.
+ *
+ * load.metadata.deps and load.metadata.format will then be set
+ * for 'my/module'
+ *
+ * The same meta could be set with a my/module.js file containing:
+ *
+ * my/module.js
+ *   "format amd";
+ *   "deps[] jquery";
+ *   "globals.some value"
+ *   console.log('this is my/module');
+ *
+ * Configuration meta always takes preference to inline meta.
+ *
+ * Multiple matches in wildcards are supported and ammend the meta.
+ *
+ *
+ * The benefits of the function form is that paths are URL-normalized
+ * supporting say
+ *
+ * loader.meta({ './app': { format: 'cjs' } });
+ *
+ * Instead of needing to set against the absolute URL (https://site.com/app.js)
+ *
+ */
+
+(function() {
+
+  hookConstructor(function(constructor) {
+    return function() {
+      this.meta = {};
+      constructor.call(this);
+    };
+  });
+
+  hook('locate', function(locate) {
+    return function(load) {
+      var meta = this.meta;
+      var name = load.name;
+
+      // NB for perf, maybe introduce a fast-path wildcard lookup cache here
+      // which is checked first
+
+      // apply wildcard metas
+      var bestDepth = 0;
+      var wildcardIndex;
+      for (var module in meta) {
+        wildcardIndex = module.indexOf('*');
+        if (wildcardIndex === -1)
+          continue;
+        if (module.substr(0, wildcardIndex) === name.substr(0, wildcardIndex)
+            && module.substr(wildcardIndex + 1) === name.substr(name.length - module.length + wildcardIndex + 1)) {
+          var depth = module.split('/').length;
+          if (depth > bestDepth)
+            bestDepth = depth;
+          extendMeta(load.metadata, meta[module], bestDepth != depth);
+        }
+      }
+
+      // apply exact meta
+      if (meta[name])
+        extendMeta(load.metadata, meta[name]);
+
+      return locate.call(this, load);
+    };
+  });
+
+  // detect any meta header syntax
+  // only set if not already set
+  var metaRegEx = /^(\s*\/\*[^\*]*(\*(?!\/)[^\*]*)*\*\/|\s*\/\/[^\n]*|\s*"[^"]+"\s*;?|\s*'[^']+'\s*;?)+/;
+  var metaPartRegEx = /\/\*[^\*]*(\*(?!\/)[^\*]*)*\*\/|\/\/[^\n]*|"[^"]+"\s*;?|'[^']+'\s*;?/g;
+
+  function setMetaProperty(target, p, value) {
+    var pParts = p.split('.');
+    var curPart;
+    while (pParts.length > 1) {
+      curPart = pParts.shift();
+      target = target[curPart] = target[curPart] || {};
+    }
+    curPart = pParts.shift();
+    if (!(curPart in target))
+      target[curPart] = value;
+  }
+
+  hook('translate', function(translate) {
+    return function(load) {
+      // shortpath for bundled
+      if (load.metadata.format == 'defined') {
+        load.metadata.deps = load.metadata.deps || [];
+        return Promise.resolve(load.source);
+      }
+
+      // NB meta will be post-translate pending transpiler conversion to plugins
+      var meta = load.source.match(metaRegEx);
+      if (meta) {
+        var metaParts = meta[0].match(metaPartRegEx);
+
+        for (var i = 0; i < metaParts.length; i++) {
+          var curPart = metaParts[i];
+          var len = curPart.length;
+
+          var firstChar = curPart.substr(0, 1);
+          if (curPart.substr(len - 1, 1) == ';')
+            len--;
+
+          if (firstChar != '"' && firstChar != "'")
+            continue;
+
+          var metaString = curPart.substr(1, curPart.length - 3);
+          var metaName = metaString.substr(0, metaString.indexOf(' '));
+
+          if (metaName) {
+            var metaValue = metaString.substr(metaName.length + 1, metaString.length - metaName.length - 1);
+
+            if (metaName.substr(metaName.length - 2, 2) == '[]') {
+              metaName = metaName.substr(0, metaName.length - 2);
+              load.metadata[metaName] = load.metadata[metaName] || [];
+              load.metadata[metaName].push(metaValue);
+            }
+            else if (load.metadata[metaName] instanceof Array) {
+              // temporary backwards compat for previous "deps" syntax
+              warn.call(this, 'Module ' + load.name + ' contains deprecated "deps ' + metaValue + '" meta syntax.\nThis should be updated to "deps[] ' + metaValue + '" for pushing to array meta.');
+              load.metadata[metaName].push(metaValue);
+            }
+            else {
+              setMetaProperty(load.metadata, metaName, metaValue);
+            }
+          }
+          else {
+            load.metadata[metaString] = true;
+          }
+        }
+      }
+
+      return translate.apply(this, arguments);
+    };
+  });
+})();
+/*
+  System bundles
+
+  Allows a bundle module to be specified which will be dynamically 
+  loaded before trying to load a given module.
+
+  For example:
+  SystemJS.bundles['mybundle'] = ['jquery', 'bootstrap/js/bootstrap']
+
+  Will result in a load to "mybundle" whenever a load to "jquery"
+  or "bootstrap/js/bootstrap" is made.
+
+  In this way, the bundle becomes the request that provides the module
+*/
+
+(function() {
+  // bundles support (just like RequireJS)
+  // bundle name is module name of bundle itself
+  // bundle is array of modules defined by the bundle
+  // when a module in the bundle is requested, the bundle is loaded instead
+  // of the form SystemJS.bundles['mybundle'] = ['jquery', 'bootstrap/js/bootstrap']
+  hookConstructor(function(constructor) {
+    return function() {
+      constructor.call(this);
+      this.bundles = {};
+      this._loader.loadedBundles = {};
+    };
+  });
+
+  // assign bundle metadata for bundle loads
+  hook('locate', function(locate) {
+    return function(load) {
+      var loader = this;
+      var matched = false;
+
+      if (!(load.name in loader.defined))
+        for (var b in loader.bundles) {
+          for (var i = 0; i < loader.bundles[b].length; i++) {
+            var curModule = loader.bundles[b][i];
+
+            if (curModule == load.name) {
+              matched = true;
+              break;
+            }
+
+            // wildcard in bundles does not include / boundaries
+            if (curModule.indexOf('*') != -1) {
+              var parts = curModule.split('*');
+              if (parts.length != 2) {
+                loader.bundles[b].splice(i--, 1);
+                continue;
+              }
+              
+              if (load.name.substring(0, parts[0].length) == parts[0] &&
+                  load.name.substr(load.name.length - parts[1].length, parts[1].length) == parts[1] &&
+                  load.name.substr(parts[0].length, load.name.length - parts[1].length - parts[0].length).indexOf('/') == -1) {
+                matched = true;
+                break;
+              }
+            }
+          }
+
+          if (matched)
+            return loader['import'](b)
+            .then(function() {
+              return locate.call(loader, load);
+            });
+        }
+
+      return locate.call(loader, load);
+    };
+  });
+})();
+/*
+ * Dependency Tree Cache
+ * 
+ * Allows a build to pre-populate a dependency trace tree on the loader of 
+ * the expected dependency tree, to be loaded upfront when requesting the
+ * module, avoinding the n round trips latency of module loading, where 
+ * n is the dependency tree depth.
+ *
+ * eg:
+ * SystemJS.depCache = {
+ *  'app': ['normalized', 'deps'],
+ *  'normalized': ['another'],
+ *  'deps': ['tree']
+ * };
+ * 
+ * SystemJS.import('app') 
+ * // simultaneously starts loading all of:
+ * // 'normalized', 'deps', 'another', 'tree'
+ * // before "app" source is even loaded
+ *
+ */
+
+(function() {
+  hookConstructor(function(constructor) {
+    return function() {
+      constructor.call(this);
+      this.depCache = {};
+    }
+  });
+
+  hook('locate', function(locate) {
+    return function(load) {
+      var loader = this;
+      // load direct deps, in turn will pick up their trace trees
+      var deps = loader.depCache[load.name];
+      if (deps)
+        for (var i = 0; i < deps.length; i++)
+          loader['import'](deps[i], load.name);
+
+      return locate.call(loader, load);
+    };
+  });
+})();
+  
+/*
+ * Script-only addition used for production loader
+ *
+ */
+hookConstructor(function(constructor) {
+  return function() {
+    constructor.apply(this, arguments);
+    __global.define = this.amdDefine;
+  };
+});
+
+hook('fetch', function(fetch) {
+  return function(load) {
+    load.metadata.scriptLoad = true;
+    return fetch.call(this, load);
+  };
+});System = new SystemJSLoader();
+
+__global.SystemJS = System;
+System.version = '0.19.39 CSP';
+  if (typeof module == 'object' && module.exports && typeof exports == 'object')
+    module.exports = System;
+
+  __global.System = System;
+
+})(typeof self != 'undefined' ? self : global);}
+
+// auto-load Promise polyfill if needed in the browser
+var doPolyfill = typeof Promise === 'undefined';
+
+// document.write
+if (typeof document !== 'undefined') {
+  var scripts = document.getElementsByTagName('script');
+  $__curScript = scripts[scripts.length - 1];
+  if (document.currentScript && ($__curScript.defer || $__curScript.async))
+    $__curScript = document.currentScript;
+  if (doPolyfill) {
+    var curPath = $__curScript.src;
+    var basePath = curPath.substr(0, curPath.lastIndexOf('/') + 1);
+    window.systemJSBootstrap = bootstrap;
+    document.write(
+      '<' + 'script type="text/javascript" src="' + basePath + 'system-polyfills.js">' + '<' + '/script>'
+    );
+  }
+  else {
+    bootstrap();
+  }
+}
+// importScripts
+else if (typeof importScripts !== 'undefined') {
+  var basePath = '';
+  try {
+    throw new Error('_');
+  } catch (e) {
+    e.stack.replace(/(?:at|@).*(http.+):[\d]+:[\d]+/, function(m, url) {
+      $__curScript = { src: url };
+      basePath = url.replace(/\/[^\/]*$/, '/');
+    });
+  }
+  if (doPolyfill)
+    importScripts(basePath + 'system-polyfills.js');
+  bootstrap();
+}
+else {
+  $__curScript = typeof __filename != 'undefined' ? { src: __filename } : null;
+  bootstrap();
+}
+
+
+})();
+\ No newline at end of file
diff --git a/dist/system-polyfills.js b/dist/system-polyfills.js
new file mode 100644
index 000000000..ca76c2418
--- /dev/null
+++ b/dist/system-polyfills.js
@@ -0,0 +1,5 @@
+/*
+ * SystemJS Promise Polyfill
+ */
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new file mode 100644
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+\ No newline at end of file
diff --git a/dist/system-polyfills.src.js b/dist/system-polyfills.src.js
new file mode 100644
index 000000000..45bf75813
--- /dev/null
+++ b/dist/system-polyfills.src.js
@@ -0,0 +1,1277 @@
+/*
+ * SystemJS Promise Polyfill
+ */
+(function(define) {
+
+!function(e){"object"==typeof exports?module.exports=e():"function"==typeof define&&define.amd?define(e):"undefined"!=typeof window?window.Promise=e():"undefined"!=typeof global?global.Promise=e():"undefined"!=typeof self&&(self.Promise=e())}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+/** @license MIT License (c) copyright 2010-2014 original author or authors */
+/** @author Brian Cavalier */
+/** @author John Hann */
+
+/**
+ * ES6 global Promise shim
+ */
+var unhandledRejections = require('../lib/decorators/unhandledRejection');
+var PromiseConstructor = unhandledRejections(require('../lib/Promise'));
+
+module.exports = typeof global != 'undefined' ? (global.Promise = PromiseConstructor)
+	           : typeof self   != 'undefined' ? (self.Promise   = PromiseConstructor)
+	           : PromiseConstructor;
+
+},{"../lib/Promise":2,"../lib/decorators/unhandledRejection":4}],2:[function(require,module,exports){
+/** @license MIT License (c) copyright 2010-2014 original author or authors */
+/** @author Brian Cavalier */
+/** @author John Hann */
+
+(function(define) { 'use strict';
+define(function (require) {
+
+	var makePromise = require('./makePromise');
+	var Scheduler = require('./Scheduler');
+	var async = require('./env').asap;
+
+	return makePromise({
+		scheduler: new Scheduler(async)
+	});
+
+});
+})(typeof define === 'function' && define.amd ? define : function (factory) { module.exports = factory(require); });
+
+},{"./Scheduler":3,"./env":5,"./makePromise":7}],3:[function(require,module,exports){
+/** @license MIT License (c) copyright 2010-2014 original author or authors */
+/** @author Brian Cavalier */
+/** @author John Hann */
+
+(function(define) { 'use strict';
+define(function() {
+
+	// Credit to Twisol (https://github.com/Twisol) for suggesting
+	// this type of extensible queue + trampoline approach for next-tick conflation.
+
+	/**
+	 * Async task scheduler
+	 * @param {function} async function to schedule a single async function
+	 * @constructor
+	 */
+	function Scheduler(async) {
+		this._async = async;
+		this._running = false;
+
+		this._queue = this;
+		this._queueLen = 0;
+		this._afterQueue = {};
+		this._afterQueueLen = 0;
+
+		var self = this;
+		this.drain = function() {
+			self._drain();
+		};
+	}
+
+	/**
+	 * Enqueue a task
+	 * @param {{ run:function }} task
+	 */
+	Scheduler.prototype.enqueue = function(task) {
+		this._queue[this._queueLen++] = task;
+		this.run();
+	};
+
+	/**
+	 * Enqueue a task to run after the main task queue
+	 * @param {{ run:function }} task
+	 */
+	Scheduler.prototype.afterQueue = function(task) {
+		this._afterQueue[this._afterQueueLen++] = task;
+		this.run();
+	};
+
+	Scheduler.prototype.run = function() {
+		if (!this._running) {
+			this._running = true;
+			this._async(this.drain);
+		}
+	};
+
+	/**
+	 * Drain the handler queue entirely, and then the after queue
+	 */
+	Scheduler.prototype._drain = function() {
+		var i = 0;
+		for (; i < this._queueLen; ++i) {
+			this._queue[i].run();
+			this._queue[i] = void 0;
+		}
+
+		this._queueLen = 0;
+		this._running = false;
+
+		for (i = 0; i < this._afterQueueLen; ++i) {
+			this._afterQueue[i].run();
+			this._afterQueue[i] = void 0;
+		}
+
+		this._afterQueueLen = 0;
+	};
+
+	return Scheduler;
+
+});
+}(typeof define === 'function' && define.amd ? define : function(factory) { module.exports = factory(); }));
+
+},{}],4:[function(require,module,exports){
+/** @license MIT License (c) copyright 2010-2014 original author or authors */
+/** @author Brian Cavalier */
+/** @author John Hann */
+
+(function(define) { 'use strict';
+define(function(require) {
+
+	var setTimer = require('../env').setTimer;
+	var format = require('../format');
+
+	return function unhandledRejection(Promise) {
+
+		var logError = noop;
+		var logInfo = noop;
+		var localConsole;
+
+		if(typeof console !== 'undefined') {
+			// Alias console to prevent things like uglify's drop_console option from
+			// removing console.log/error. Unhandled rejections fall into the same
+			// category as uncaught exceptions, and build tools shouldn't silence them.
+			localConsole = console;
+			logError = typeof localConsole.error !== 'undefined'
+				? function (e) { localConsole.error(e); }
+				: function (e) { localConsole.log(e); };
+
+			logInfo = typeof localConsole.info !== 'undefined'
+				? function (e) { localConsole.info(e); }
+				: function (e) { localConsole.log(e); };
+		}
+
+		Promise.onPotentiallyUnhandledRejection = function(rejection) {
+			enqueue(report, rejection);
+		};
+
+		Promise.onPotentiallyUnhandledRejectionHandled = function(rejection) {
+			enqueue(unreport, rejection);
+		};
+
+		Promise.onFatalRejection = function(rejection) {
+			enqueue(throwit, rejection.value);
+		};
+
+		var tasks = [];
+		var reported = [];
+		var running = null;
+
+		function report(r) {
+			if(!r.handled) {
+				reported.push(r);
+				logError('Potentially unhandled rejection [' + r.id + '] ' + format.formatError(r.value));
+			}
+		}
+
+		function unreport(r) {
+			var i = reported.indexOf(r);
+			if(i >= 0) {
+				reported.splice(i, 1);
+				logInfo('Handled previous rejection [' + r.id + '] ' + format.formatObject(r.value));
+			}
+		}
+
+		function enqueue(f, x) {
+			tasks.push(f, x);
+			if(running === null) {
+				running = setTimer(flush, 0);
+			}
+		}
+
+		function flush() {
+			running = null;
+			while(tasks.length > 0) {
+				tasks.shift()(tasks.shift());
+			}
+		}
+
+		return Promise;
+	};
+
+	function throwit(e) {
+		throw e;
+	}
+
+	function noop() {}
+
+});
+}(typeof define === 'function' && define.amd ? define : function(factory) { module.exports = factory(require); }));
+
+},{"../env":5,"../format":6}],5:[function(require,module,exports){
+/** @license MIT License (c) copyright 2010-2014 original author or authors */
+/** @author Brian Cavalier */
+/** @author John Hann */
+
+/*global process,document,setTimeout,clearTimeout,MutationObserver,WebKitMutationObserver*/
+(function(define) { 'use strict';
+define(function(require) {
+	/*jshint maxcomplexity:6*/
+
+	// Sniff "best" async scheduling option
+	// Prefer process.nextTick or MutationObserver, then check for
+	// setTimeout, and finally vertx, since its the only env that doesn't
+	// have setTimeout
+
+	var MutationObs;
+	var capturedSetTimeout = typeof setTimeout !== 'undefined' && setTimeout;
+
+	// Default env
+	var setTimer = function(f, ms) { return setTimeout(f, ms); };
+	var clearTimer = function(t) { return clearTimeout(t); };
+	var asap = function (f) { return capturedSetTimeout(f, 0); };
+
+	// Detect specific env
+	if (isNode()) { // Node
+		asap = function (f) { return process.nextTick(f); };
+
+	} else if (MutationObs = hasMutationObserver()) { // Modern browser
+		asap = initMutationObserver(MutationObs);
+
+	} else if (!capturedSetTimeout) { // vert.x
+		var vertxRequire = require;
+		var vertx = vertxRequire('vertx');
+		setTimer = function (f, ms) { return vertx.setTimer(ms, f); };
+		clearTimer = vertx.cancelTimer;
+		asap = vertx.runOnLoop || vertx.runOnContext;
+	}
+
+	return {
+		setTimer: setTimer,
+		clearTimer: clearTimer,
+		asap: asap
+	};
+
+	function isNode () {
+		return typeof process !== 'undefined' &&
+			Object.prototype.toString.call(process) === '[object process]';
+	}
+
+	function hasMutationObserver () {
+		return (typeof MutationObserver === 'function' && MutationObserver) ||
+			(typeof WebKitMutationObserver === 'function' && WebKitMutationObserver);
+	}
+
+	function initMutationObserver(MutationObserver) {
+		var scheduled;
+		var node = document.createTextNode('');
+		var o = new MutationObserver(run);
+		o.observe(node, { characterData: true });
+
+		function run() {
+			var f = scheduled;
+			scheduled = void 0;
+			f();
+		}
+
+		var i = 0;
+		return function (f) {
+			scheduled = f;
+			node.data = (i ^= 1);
+		};
+	}
+});
+}(typeof define === 'function' && define.amd ? define : function(factory) { module.exports = factory(require); }));
+
+},{}],6:[function(require,module,exports){
+/** @license MIT License (c) copyright 2010-2014 original author or authors */
+/** @author Brian Cavalier */
+/** @author John Hann */
+
+(function(define) { 'use strict';
+define(function() {
+
+	return {
+		formatError: formatError,
+		formatObject: formatObject,
+		tryStringify: tryStringify
+	};
+
+	/**
+	 * Format an error into a string.  If e is an Error and has a stack property,
+	 * it's returned.  Otherwise, e is formatted using formatObject, with a
+	 * warning added about e not being a proper Error.
+	 * @param {*} e
+	 * @returns {String} formatted string, suitable for output to developers
+	 */
+	function formatError(e) {
+		var s = typeof e === 'object' && e !== null && (e.stack || e.message) ? e.stack || e.message : formatObject(e);
+		return e instanceof Error ? s : s + ' (WARNING: non-Error used)';
+	}
+
+	/**
+	 * Format an object, detecting "plain" objects and running them through
+	 * JSON.stringify if possible.
+	 * @param {Object} o
+	 * @returns {string}
+	 */
+	function formatObject(o) {
+		var s = String(o);
+		if(s === '[object Object]' && typeof JSON !== 'undefined') {
+			s = tryStringify(o, s);
+		}
+		return s;
+	}
+
+	/**
+	 * Try to return the result of JSON.stringify(x).  If that fails, return
+	 * defaultValue
+	 * @param {*} x
+	 * @param {*} defaultValue
+	 * @returns {String|*} JSON.stringify(x) or defaultValue
+	 */
+	function tryStringify(x, defaultValue) {
+		try {
+			return JSON.stringify(x);
+		} catch(e) {
+			return defaultValue;
+		}
+	}
+
+});
+}(typeof define === 'function' && define.amd ? define : function(factory) { module.exports = factory(); }));
+
+},{}],7:[function(require,module,exports){
+/** @license MIT License (c) copyright 2010-2014 original author or authors */
+/** @author Brian Cavalier */
+/** @author John Hann */
+
+(function(define) { 'use strict';
+define(function() {
+
+	return function makePromise(environment) {
+
+		var tasks = environment.scheduler;
+		var emitRejection = initEmitRejection();
+
+		var objectCreate = Object.create ||
+			function(proto) {
+				function Child() {}
+				Child.prototype = proto;
+				return new Child();
+			};
+
+		/**
+		 * Create a promise whose fate is determined by resolver
+		 * @constructor
+		 * @returns {Promise} promise
+		 * @name Promise
+		 */
+		function Promise(resolver, handler) {
+			this._handler = resolver === Handler ? handler : init(resolver);
+		}
+
+		/**
+		 * Run the supplied resolver
+		 * @param resolver
+		 * @returns {Pending}
+		 */
+		function init(resolver) {
+			var handler = new Pending();
+
+			try {
+				resolver(promiseResolve, promiseReject, promiseNotify);
+			} catch (e) {
+				promiseReject(e);
+			}
+
+			return handler;
+
+			/**
+			 * Transition from pre-resolution state to post-resolution state, notifying
+			 * all listeners of the ultimate fulfillment or rejection
+			 * @param {*} x resolution value
+			 */
+			function promiseResolve (x) {
+				handler.resolve(x);
+			}
+			/**
+			 * Reject this promise with reason, which will be used verbatim
+			 * @param {Error|*} reason rejection reason, strongly suggested
+			 *   to be an Error type
+			 */
+			function promiseReject (reason) {
+				handler.reject(reason);
+			}
+
+			/**
+			 * @deprecated
+			 * Issue a progress event, notifying all progress listeners
+			 * @param {*} x progress event payload to pass to all listeners
+			 */
+			function promiseNotify (x) {
+				handler.notify(x);
+			}
+		}
+
+		// Creation
+
+		Promise.resolve = resolve;
+		Promise.reject = reject;
+		Promise.never = never;
+
+		Promise._defer = defer;
+		Promise._handler = getHandler;
+
+		/**
+		 * Returns a trusted promise. If x is already a trusted promise, it is
+		 * returned, otherwise returns a new trusted Promise which follows x.
+		 * @param  {*} x
+		 * @return {Promise} promise
+		 */
+		function resolve(x) {
+			return isPromise(x) ? x
+				: new Promise(Handler, new Async(getHandler(x)));
+		}
+
+		/**
+		 * Return a reject promise with x as its reason (x is used verbatim)
+		 * @param {*} x
+		 * @returns {Promise} rejected promise
+		 */
+		function reject(x) {
+			return new Promise(Handler, new Async(new Rejected(x)));
+		}
+
+		/**
+		 * Return a promise that remains pending forever
+		 * @returns {Promise} forever-pending promise.
+		 */
+		function never() {
+			return foreverPendingPromise; // Should be frozen
+		}
+
+		/**
+		 * Creates an internal {promise, resolver} pair
+		 * @private
+		 * @returns {Promise}
+		 */
+		function defer() {
+			return new Promise(Handler, new Pending());
+		}
+
+		// Transformation and flow control
+
+		/**
+		 * Transform this promise's fulfillment value, returning a new Promise
+		 * for the transformed result.  If the promise cannot be fulfilled, onRejected
+		 * is called with the reason.  onProgress *may* be called with updates toward
+		 * this promise's fulfillment.
+		 * @param {function=} onFulfilled fulfillment handler
+		 * @param {function=} onRejected rejection handler
+		 * @param {function=} onProgress @deprecated progress handler
+		 * @return {Promise} new promise
+		 */
+		Promise.prototype.then = function(onFulfilled, onRejected, onProgress) {
+			var parent = this._handler;
+			var state = parent.join().state();
+
+			if ((typeof onFulfilled !== 'function' && state > 0) ||
+				(typeof onRejected !== 'function' && state < 0)) {
+				// Short circuit: value will not change, simply share handler
+				return new this.constructor(Handler, parent);
+			}
+
+			var p = this._beget();
+			var child = p._handler;
+
+			parent.chain(child, parent.receiver, onFulfilled, onRejected, onProgress);
+
+			return p;
+		};
+
+		/**
+		 * If this promise cannot be fulfilled due to an error, call onRejected to
+		 * handle the error. Shortcut for .then(undefined, onRejected)
+		 * @param {function?} onRejected
+		 * @return {Promise}
+		 */
+		Promise.prototype['catch'] = function(onRejected) {
+			return this.then(void 0, onRejected);
+		};
+
+		/**
+		 * Creates a new, pending promise of the same type as this promise
+		 * @private
+		 * @returns {Promise}
+		 */
+		Promise.prototype._beget = function() {
+			return begetFrom(this._handler, this.constructor);
+		};
+
+		function begetFrom(parent, Promise) {
+			var child = new Pending(parent.receiver, parent.join().context);
+			return new Promise(Handler, child);
+		}
+
+		// Array combinators
+
+		Promise.all = all;
+		Promise.race = race;
+		Promise._traverse = traverse;
+
+		/**
+		 * Return a promise that will fulfill when all promises in the
+		 * input array have fulfilled, or will reject when one of the
+		 * promises rejects.
+		 * @param {array} promises array of promises
+		 * @returns {Promise} promise for array of fulfillment values
+		 */
+		function all(promises) {
+			return traverseWith(snd, null, promises);
+		}
+
+		/**
+		 * Array<Promise<X>> -> Promise<Array<f(X)>>
+		 * @private
+		 * @param {function} f function to apply to each promise's value
+		 * @param {Array} promises array of promises
+		 * @returns {Promise} promise for transformed values
+		 */
+		function traverse(f, promises) {
+			return traverseWith(tryCatch2, f, promises);
+		}
+
+		function traverseWith(tryMap, f, promises) {
+			var handler = typeof f === 'function' ? mapAt : settleAt;
+
+			var resolver = new Pending();
+			var pending = promises.length >>> 0;
+			var results = new Array(pending);
+
+			for (var i = 0, x; i < promises.length && !resolver.resolved; ++i) {
+				x = promises[i];
+
+				if (x === void 0 && !(i in promises)) {
+					--pending;
+					continue;
+				}
+
+				traverseAt(promises, handler, i, x, resolver);
+			}
+
+			if(pending === 0) {
+				resolver.become(new Fulfilled(results));
+			}
+
+			return new Promise(Handler, resolver);
+
+			function mapAt(i, x, resolver) {
+				if(!resolver.resolved) {
+					traverseAt(promises, settleAt, i, tryMap(f, x, i), resolver);
+				}
+			}
+
+			function settleAt(i, x, resolver) {
+				results[i] = x;
+				if(--pending === 0) {
+					resolver.become(new Fulfilled(results));
+				}
+			}
+		}
+
+		function traverseAt(promises, handler, i, x, resolver) {
+			if (maybeThenable(x)) {
+				var h = getHandlerMaybeThenable(x);
+				var s = h.state();
+
+				if (s === 0) {
+					h.fold(handler, i, void 0, resolver);
+				} else if (s > 0) {
+					handler(i, h.value, resolver);
+				} else {
+					resolver.become(h);
+					visitRemaining(promises, i+1, h);
+				}
+			} else {
+				handler(i, x, resolver);
+			}
+		}
+
+		Promise._visitRemaining = visitRemaining;
+		function visitRemaining(promises, start, handler) {
+			for(var i=start; i<promises.length; ++i) {
+				markAsHandled(getHandler(promises[i]), handler);
+			}
+		}
+
+		function markAsHandled(h, handler) {
+			if(h === handler) {
+				return;
+			}
+
+			var s = h.state();
+			if(s === 0) {
+				h.visit(h, void 0, h._unreport);
+			} else if(s < 0) {
+				h._unreport();
+			}
+		}
+
+		/**
+		 * Fulfill-reject competitive race. Return a promise that will settle
+		 * to the same state as the earliest input promise to settle.
+		 *
+		 * WARNING: The ES6 Promise spec requires that race()ing an empty array
+		 * must return a promise that is pending forever.  This implementation
+		 * returns a singleton forever-pending promise, the same singleton that is
+		 * returned by Promise.never(), thus can be checked with ===
+		 *
+		 * @param {array} promises array of promises to race
+		 * @returns {Promise} if input is non-empty, a promise that will settle
+		 * to the same outcome as the earliest input promise to settle. if empty
+		 * is empty, returns a promise that will never settle.
+		 */
+		function race(promises) {
+			if(typeof promises !== 'object' || promises === null) {
+				return reject(new TypeError('non-iterable passed to race()'));
+			}
+
+			// Sigh, race([]) is untestable unless we return *something*
+			// that is recognizable without calling .then() on it.
+			return promises.length === 0 ? never()
+				 : promises.length === 1 ? resolve(promises[0])
+				 : runRace(promises);
+		}
+
+		function runRace(promises) {
+			var resolver = new Pending();
+			var i, x, h;
+			for(i=0; i<promises.length; ++i) {
+				x = promises[i];
+				if (x === void 0 && !(i in promises)) {
+					continue;
+				}
+
+				h = getHandler(x);
+				if(h.state() !== 0) {
+					resolver.become(h);
+					visitRemaining(promises, i+1, h);
+					break;
+				} else {
+					h.visit(resolver, resolver.resolve, resolver.reject);
+				}
+			}
+			return new Promise(Handler, resolver);
+		}
+
+		// Promise internals
+		// Below this, everything is @private
+
+		/**
+		 * Get an appropriate handler for x, without checking for cycles
+		 * @param {*} x
+		 * @returns {object} handler
+		 */
+		function getHandler(x) {
+			if(isPromise(x)) {
+				return x._handler.join();
+			}
+			return maybeThenable(x) ? getHandlerUntrusted(x) : new Fulfilled(x);
+		}
+
+		/**
+		 * Get a handler for thenable x.
+		 * NOTE: You must only call this if maybeThenable(x) == true
+		 * @param {object|function|Promise} x
+		 * @returns {object} handler
+		 */
+		function getHandlerMaybeThenable(x) {
+			return isPromise(x) ? x._handler.join() : getHandlerUntrusted(x);
+		}
+
+		/**
+		 * Get a handler for potentially untrusted thenable x
+		 * @param {*} x
+		 * @returns {object} handler
+		 */
+		function getHandlerUntrusted(x) {
+			try {
+				var untrustedThen = x.then;
+				return typeof untrustedThen === 'function'
+					? new Thenable(untrustedThen, x)
+					: new Fulfilled(x);
+			} catch(e) {
+				return new Rejected(e);
+			}
+		}
+
+		/**
+		 * Handler for a promise that is pending forever
+		 * @constructor
+		 */
+		function Handler() {}
+
+		Handler.prototype.when
+			= Handler.prototype.become
+			= Handler.prototype.notify // deprecated
+			= Handler.prototype.fail
+			= Handler.prototype._unreport
+			= Handler.prototype._report
+			= noop;
+
+		Handler.prototype._state = 0;
+
+		Handler.prototype.state = function() {
+			return this._state;
+		};
+
+		/**
+		 * Recursively collapse handler chain to find the handler
+		 * nearest to the fully resolved value.
+		 * @returns {object} handler nearest the fully resolved value
+		 */
+		Handler.prototype.join = function() {
+			var h = this;
+			while(h.handler !== void 0) {
+				h = h.handler;
+			}
+			return h;
+		};
+
+		Handler.prototype.chain = function(to, receiver, fulfilled, rejected, progress) {
+			this.when({
+				resolver: to,
+				receiver: receiver,
+				fulfilled: fulfilled,
+				rejected: rejected,
+				progress: progress
+			});
+		};
+
+		Handler.prototype.visit = function(receiver, fulfilled, rejected, progress) {
+			this.chain(failIfRejected, receiver, fulfilled, rejected, progress);
+		};
+
+		Handler.prototype.fold = function(f, z, c, to) {
+			this.when(new Fold(f, z, c, to));
+		};
+
+		/**
+		 * Handler that invokes fail() on any handler it becomes
+		 * @constructor
+		 */
+		function FailIfRejected() {}
+
+		inherit(Handler, FailIfRejected);
+
+		FailIfRejected.prototype.become = function(h) {
+			h.fail();
+		};
+
+		var failIfRejected = new FailIfRejected();
+
+		/**
+		 * Handler that manages a queue of consumers waiting on a pending promise
+		 * @constructor
+		 */
+		function Pending(receiver, inheritedContext) {
+			Promise.createContext(this, inheritedContext);
+
+			this.consumers = void 0;
+			this.receiver = receiver;
+			this.handler = void 0;
+			this.resolved = false;
+		}
+
+		inherit(Handler, Pending);
+
+		Pending.prototype._state = 0;
+
+		Pending.prototype.resolve = function(x) {
+			this.become(getHandler(x));
+		};
+
+		Pending.prototype.reject = function(x) {
+			if(this.resolved) {
+				return;
+			}
+
+			this.become(new Rejected(x));
+		};
+
+		Pending.prototype.join = function() {
+			if (!this.resolved) {
+				return this;
+			}
+
+			var h = this;
+
+			while (h.handler !== void 0) {
+				h = h.handler;
+				if (h === this) {
+					return this.handler = cycle();
+				}
+			}
+
+			return h;
+		};
+
+		Pending.prototype.run = function() {
+			var q = this.consumers;
+			var handler = this.handler;
+			this.handler = this.handler.join();
+			this.consumers = void 0;
+
+			for (var i = 0; i < q.length; ++i) {
+				handler.when(q[i]);
+			}
+		};
+
+		Pending.prototype.become = function(handler) {
+			if(this.resolved) {
+				return;
+			}
+
+			this.resolved = true;
+			this.handler = handler;
+			if(this.consumers !== void 0) {
+				tasks.enqueue(this);
+			}
+
+			if(this.context !== void 0) {
+				handler._report(this.context);
+			}
+		};
+
+		Pending.prototype.when = function(continuation) {
+			if(this.resolved) {
+				tasks.enqueue(new ContinuationTask(continuation, this.handler));
+			} else {
+				if(this.consumers === void 0) {
+					this.consumers = [continuation];
+				} else {
+					this.consumers.push(continuation);
+				}
+			}
+		};
+
+		/**
+		 * @deprecated
+		 */
+		Pending.prototype.notify = function(x) {
+			if(!this.resolved) {
+				tasks.enqueue(new ProgressTask(x, this));
+			}
+		};
+
+		Pending.prototype.fail = function(context) {
+			var c = typeof context === 'undefined' ? this.context : context;
+			this.resolved && this.handler.join().fail(c);
+		};
+
+		Pending.prototype._report = function(context) {
+			this.resolved && this.handler.join()._report(context);
+		};
+
+		Pending.prototype._unreport = function() {
+			this.resolved && this.handler.join()._unreport();
+		};
+
+		/**
+		 * Wrap another handler and force it into a future stack
+		 * @param {object} handler
+		 * @constructor
+		 */
+		function Async(handler) {
+			this.handler = handler;
+		}
+
+		inherit(Handler, Async);
+
+		Async.prototype.when = function(continuation) {
+			tasks.enqueue(new ContinuationTask(continuation, this));
+		};
+
+		Async.prototype._report = function(context) {
+			this.join()._report(context);
+		};
+
+		Async.prototype._unreport = function() {
+			this.join()._unreport();
+		};
+
+		/**
+		 * Handler that wraps an untrusted thenable and assimilates it in a future stack
+		 * @param {function} then
+		 * @param {{then: function}} thenable
+		 * @constructor
+		 */
+		function Thenable(then, thenable) {
+			Pending.call(this);
+			tasks.enqueue(new AssimilateTask(then, thenable, this));
+		}
+
+		inherit(Pending, Thenable);
+
+		/**
+		 * Handler for a fulfilled promise
+		 * @param {*} x fulfillment value
+		 * @constructor
+		 */
+		function Fulfilled(x) {
+			Promise.createContext(this);
+			this.value = x;
+		}
+
+		inherit(Handler, Fulfilled);
+
+		Fulfilled.prototype._state = 1;
+
+		Fulfilled.prototype.fold = function(f, z, c, to) {
+			runContinuation3(f, z, this, c, to);
+		};
+
+		Fulfilled.prototype.when = function(cont) {
+			runContinuation1(cont.fulfilled, this, cont.receiver, cont.resolver);
+		};
+
+		var errorId = 0;
+
+		/**
+		 * Handler for a rejected promise
+		 * @param {*} x rejection reason
+		 * @constructor
+		 */
+		function Rejected(x) {
+			Promise.createContext(this);
+
+			this.id = ++errorId;
+			this.value = x;
+			this.handled = false;
+			this.reported = false;
+
+			this._report();
+		}
+
+		inherit(Handler, Rejected);
+
+		Rejected.prototype._state = -1;
+
+		Rejected.prototype.fold = function(f, z, c, to) {
+			to.become(this);
+		};
+
+		Rejected.prototype.when = function(cont) {
+			if(typeof cont.rejected === 'function') {
+				this._unreport();
+			}
+			runContinuation1(cont.rejected, this, cont.receiver, cont.resolver);
+		};
+
+		Rejected.prototype._report = function(context) {
+			tasks.afterQueue(new ReportTask(this, context));
+		};
+
+		Rejected.prototype._unreport = function() {
+			if(this.handled) {
+				return;
+			}
+			this.handled = true;
+			tasks.afterQueue(new UnreportTask(this));
+		};
+
+		Rejected.prototype.fail = function(context) {
+			this.reported = true;
+			emitRejection('unhandledRejection', this);
+			Promise.onFatalRejection(this, context === void 0 ? this.context : context);
+		};
+
+		function ReportTask(rejection, context) {
+			this.rejection = rejection;
+			this.context = context;
+		}
+
+		ReportTask.prototype.run = function() {
+			if(!this.rejection.handled && !this.rejection.reported) {
+				this.rejection.reported = true;
+				emitRejection('unhandledRejection', this.rejection) ||
+					Promise.onPotentiallyUnhandledRejection(this.rejection, this.context);
+			}
+		};
+
+		function UnreportTask(rejection) {
+			this.rejection = rejection;
+		}
+
+		UnreportTask.prototype.run = function() {
+			if(this.rejection.reported) {
+				emitRejection('rejectionHandled', this.rejection) ||
+					Promise.onPotentiallyUnhandledRejectionHandled(this.rejection);
+			}
+		};
+
+		// Unhandled rejection hooks
+		// By default, everything is a noop
+
+		Promise.createContext
+			= Promise.enterContext
+			= Promise.exitContext
+			= Promise.onPotentiallyUnhandledRejection
+			= Promise.onPotentiallyUnhandledRejectionHandled
+			= Promise.onFatalRejection
+			= noop;
+
+		// Errors and singletons
+
+		var foreverPendingHandler = new Handler();
+		var foreverPendingPromise = new Promise(Handler, foreverPendingHandler);
+
+		function cycle() {
+			return new Rejected(new TypeError('Promise cycle'));
+		}
+
+		// Task runners
+
+		/**
+		 * Run a single consumer
+		 * @constructor
+		 */
+		function ContinuationTask(continuation, handler) {
+			this.continuation = continuation;
+			this.handler = handler;
+		}
+
+		ContinuationTask.prototype.run = function() {
+			this.handler.join().when(this.continuation);
+		};
+
+		/**
+		 * Run a queue of progress handlers
+		 * @constructor
+		 */
+		function ProgressTask(value, handler) {
+			this.handler = handler;
+			this.value = value;
+		}
+
+		ProgressTask.prototype.run = function() {
+			var q = this.handler.consumers;
+			if(q === void 0) {
+				return;
+			}
+
+			for (var c, i = 0; i < q.length; ++i) {
+				c = q[i];
+				runNotify(c.progress, this.value, this.handler, c.receiver, c.resolver);
+			}
+		};
+
+		/**
+		 * Assimilate a thenable, sending it's value to resolver
+		 * @param {function} then
+		 * @param {object|function} thenable
+		 * @param {object} resolver
+		 * @constructor
+		 */
+		function AssimilateTask(then, thenable, resolver) {
+			this._then = then;
+			this.thenable = thenable;
+			this.resolver = resolver;
+		}
+
+		AssimilateTask.prototype.run = function() {
+			var h = this.resolver;
+			tryAssimilate(this._then, this.thenable, _resolve, _reject, _notify);
+
+			function _resolve(x) { h.resolve(x); }
+			function _reject(x)  { h.reject(x); }
+			function _notify(x)  { h.notify(x); }
+		};
+
+		function tryAssimilate(then, thenable, resolve, reject, notify) {
+			try {
+				then.call(thenable, resolve, reject, notify);
+			} catch (e) {
+				reject(e);
+			}
+		}
+
+		/**
+		 * Fold a handler value with z
+		 * @constructor
+		 */
+		function Fold(f, z, c, to) {
+			this.f = f; this.z = z; this.c = c; this.to = to;
+			this.resolver = failIfRejected;
+			this.receiver = this;
+		}
+
+		Fold.prototype.fulfilled = function(x) {
+			this.f.call(this.c, this.z, x, this.to);
+		};
+
+		Fold.prototype.rejected = function(x) {
+			this.to.reject(x);
+		};
+
+		Fold.prototype.progress = function(x) {
+			this.to.notify(x);
+		};
+
+		// Other helpers
+
+		/**
+		 * @param {*} x
+		 * @returns {boolean} true iff x is a trusted Promise
+		 */
+		function isPromise(x) {
+			return x instanceof Promise;
+		}
+
+		/**
+		 * Test just enough to rule out primitives, in order to take faster
+		 * paths in some code
+		 * @param {*} x
+		 * @returns {boolean} false iff x is guaranteed *not* to be a thenable
+		 */
+		function maybeThenable(x) {
+			return (typeof x === 'object' || typeof x === 'function') && x !== null;
+		}
+
+		function runContinuation1(f, h, receiver, next) {
+			if(typeof f !== 'function') {
+				return next.become(h);
+			}
+
+			Promise.enterContext(h);
+			tryCatchReject(f, h.value, receiver, next);
+			Promise.exitContext();
+		}
+
+		function runContinuation3(f, x, h, receiver, next) {
+			if(typeof f !== 'function') {
+				return next.become(h);
+			}
+
+			Promise.enterContext(h);
+			tryCatchReject3(f, x, h.value, receiver, next);
+			Promise.exitContext();
+		}
+
+		/**
+		 * @deprecated
+		 */
+		function runNotify(f, x, h, receiver, next) {
+			if(typeof f !== 'function') {
+				return next.notify(x);
+			}
+
+			Promise.enterContext(h);
+			tryCatchReturn(f, x, receiver, next);
+			Promise.exitContext();
+		}
+
+		function tryCatch2(f, a, b) {
+			try {
+				return f(a, b);
+			} catch(e) {
+				return reject(e);
+			}
+		}
+
+		/**
+		 * Return f.call(thisArg, x), or if it throws return a rejected promise for
+		 * the thrown exception
+		 */
+		function tryCatchReject(f, x, thisArg, next) {
+			try {
+				next.become(getHandler(f.call(thisArg, x)));
+			} catch(e) {
+				next.become(new Rejected(e));
+			}
+		}
+
+		/**
+		 * Same as above, but includes the extra argument parameter.
+		 */
+		function tryCatchReject3(f, x, y, thisArg, next) {
+			try {
+				f.call(thisArg, x, y, next);
+			} catch(e) {
+				next.become(new Rejected(e));
+			}
+		}
+
+		/**
+		 * @deprecated
+		 * Return f.call(thisArg, x), or if it throws, *return* the exception
+		 */
+		function tryCatchReturn(f, x, thisArg, next) {
+			try {
+				next.notify(f.call(thisArg, x));
+			} catch(e) {
+				next.notify(e);
+			}
+		}
+
+		function inherit(Parent, Child) {
+			Child.prototype = objectCreate(Parent.prototype);
+			Child.prototype.constructor = Child;
+		}
+
+		function snd(x, y) {
+			return y;
+		}
+
+		function noop() {}
+
+		function initEmitRejection() {
+			/*global process, self, CustomEvent*/
+			if(typeof process !== 'undefined' && process !== null
+				&& typeof process.emit === 'function') {
+				// Returning falsy here means to call the default
+				// onPotentiallyUnhandledRejection API.  This is safe even in
+				// browserify since process.emit always returns falsy in browserify:
+				// https://github.com/defunctzombie/node-process/blob/master/browser.js#L40-L46
+				return function(type, rejection) {
+					return type === 'unhandledRejection'
+						? process.emit(type, rejection.value, rejection)
+						: process.emit(type, rejection);
+				};
+			} else if(typeof self !== 'undefined' && typeof CustomEvent === 'function') {
+				return (function(noop, self, CustomEvent) {
+					var hasCustomEvent = false;
+					try {
+						var ev = new CustomEvent('unhandledRejection');
+						hasCustomEvent = ev instanceof CustomEvent;
+					} catch (e) {}
+
+					return !hasCustomEvent ? noop : function(type, rejection) {
+						var ev = new CustomEvent(type, {
+							detail: {
+								reason: rejection.value,
+								key: rejection
+							},
+							bubbles: false,
+							cancelable: true
+						});
+
+						return !self.dispatchEvent(ev);
+					};
+				}(noop, self, CustomEvent));
+			}
+
+			return noop;
+		}
+
+		return Promise;
+	};
+});
+}(typeof define === 'function' && define.amd ? define : function(factory) { module.exports = factory(); }));
+
+},{}]},{},[1])
+//# sourceMappingURL=Promise.js.map
+(1)
+});
+;if (typeof systemJSBootstrap !== 'undefined')
+  systemJSBootstrap();})();
diff --git a/dist/system-register-only.js b/dist/system-register-only.js
new file mode 100644
index 000000000..a29a90333
--- /dev/null
+++ b/dist/system-register-only.js
@@ -0,0 +1,5 @@
+/*
+ * SystemJS v0.19.39
+ */
+!function(e){function t(e,n){if("string"!=typeof e)throw new TypeError("URL must be a string");var r=String(e).replace(/^\s+|\s+$/g,"").match(/^([^:\/?#]+:)?(?:\/\/(?:([^:@\/?#]*)(?::([^:@\/?#]*))?@)?(([^:\/?#]*)(?::(\d*))?))?([^?#]*)(\?[^#]*)?(#[\s\S]*)?/);if(!r)throw new RangeError("Invalid URL format");var a=r[1]||"",o=r[2]||"",i=r[3]||"",s=r[4]||"",d=r[5]||"",l=r[6]||"",u=r[7]||"",c=r[8]||"",f=r[9]||"";if(void 0!==n){var m=n instanceof t?n:new t(n),p=!a&&!s&&!o;!p||u||c||(c=m.search),p&&"/"!==u[0]&&(u=u?(!m.host&&!m.username||m.pathname?"":"/")+m.pathname.slice(0,m.pathname.lastIndexOf("/")+1)+u:m.pathname);var h=[];u.replace(/^(\.\.?(\/|$))+/,"").replace(/\/(\.(\/|$))+/g,"/").replace(/\/\.\.$/,"/../").replace(/\/?[^\/]*/g,function(e){"/.."===e?h.pop():h.push(e)}),u=h.join("").replace(/^\//,"/"===u[0]?"/":""),p&&(l=m.port,d=m.hostname,s=m.host,i=m.password,o=m.username),a||(a=m.protocol)}u=u.replace(/\\/g,"/"),this.origin=s?a+(""!==a||""!==s?"//":"")+s:"",this.href=a+(a&&s||"file:"==a?"//":"")+(""!==o?o+(""!==i?":"+i:"")+"@":"")+s+u+c+f,this.protocol=a,this.username=o,this.password=i,this.host=s,this.hostname=d,this.port=l,this.pathname=u,this.search=c,this.hash=f}e.URLPolyfill=t}("undefined"!=typeof self?self:global),function(e){function t(e,t){if(!e.originalErr)for(var n=((e.message||e)+(e.stack?"\n"+e.stack:"")).toString().split("\n"),r=[],a=0;a<n.length;a++)"undefined"!=typeof $__curScript&&n[a].indexOf($__curScript.src)!=-1||r.push(n[a]);var o="(SystemJS) "+(r?r.join("\n\t"):e.message.substr(11))+"\n\t"+t;y||(o=o.replace(b?/file:\/\/\//g:/file:\/\//g,""));var i=E?new 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+\ No newline at end of file
diff --git a/dist/system-register-only.src.js b/dist/system-register-only.src.js
new file mode 100644
index 000000000..7ff22628f
--- /dev/null
+++ b/dist/system-register-only.src.js
@@ -0,0 +1,2198 @@
+/*
+ * SystemJS v0.19.39
+ */
+// from https://gist.github.com/Yaffle/1088850
+(function(global) {
+function URLPolyfill(url, baseURL) {
+  if (typeof url != 'string')
+    throw new TypeError('URL must be a string');
+  var m = String(url).replace(/^\s+|\s+$/g, "").match(/^([^:\/?#]+:)?(?:\/\/(?:([^:@\/?#]*)(?::([^:@\/?#]*))?@)?(([^:\/?#]*)(?::(\d*))?))?([^?#]*)(\?[^#]*)?(#[\s\S]*)?/);
+  if (!m)
+    throw new RangeError('Invalid URL format');
+  var protocol = m[1] || "";
+  var username = m[2] || "";
+  var password = m[3] || "";
+  var host = m[4] || "";
+  var hostname = m[5] || "";
+  var port = m[6] || "";
+  var pathname = m[7] || "";
+  var search = m[8] || "";
+  var hash = m[9] || "";
+  if (baseURL !== undefined) {
+    var base = baseURL instanceof URLPolyfill ? baseURL : new URLPolyfill(baseURL);
+    var flag = !protocol && !host && !username;
+    if (flag && !pathname && !search)
+      search = base.search;
+    if (flag && pathname[0] !== "/")
+      pathname = (pathname ? (((base.host || base.username) && !base.pathname ? "/" : "") + base.pathname.slice(0, base.pathname.lastIndexOf("/") + 1) + pathname) : base.pathname);
+    // dot segments removal
+    var output = [];
+    pathname.replace(/^(\.\.?(\/|$))+/, "")
+      .replace(/\/(\.(\/|$))+/g, "/")
+      .replace(/\/\.\.$/, "/../")
+      .replace(/\/?[^\/]*/g, function (p) {
+        if (p === "/..")
+          output.pop();
+        else
+          output.push(p);
+      });
+    pathname = output.join("").replace(/^\//, pathname[0] === "/" ? "/" : "");
+    if (flag) {
+      port = base.port;
+      hostname = base.hostname;
+      host = base.host;
+      password = base.password;
+      username = base.username;
+    }
+    if (!protocol)
+      protocol = base.protocol;
+  }
+
+  // convert URLs to use / always
+  pathname = pathname.replace(/\\/g, '/');
+
+  this.origin = host ? protocol + (protocol !== "" || host !== "" ? "//" : "") + host : "";
+  this.href = protocol + (protocol && host || protocol == "file:" ? "//" : "") + (username !== "" ? username + (password !== "" ? ":" + password : "") + "@" : "") + host + pathname + search + hash;
+  this.protocol = protocol;
+  this.username = username;
+  this.password = password;
+  this.host = host;
+  this.hostname = hostname;
+  this.port = port;
+  this.pathname = pathname;
+  this.search = search;
+  this.hash = hash;
+}
+global.URLPolyfill = URLPolyfill;
+})(typeof self != 'undefined' ? self : global);(function(__global) {
+
+  var isWorker = typeof window == 'undefined' && typeof self != 'undefined' && typeof importScripts != 'undefined';
+  var isBrowser = typeof window != 'undefined' && typeof document != 'undefined';
+  var isWindows = typeof process != 'undefined' && typeof process.platform != 'undefined' && !!process.platform.match(/^win/);
+
+  if (!__global.console)
+    __global.console = { assert: function() {} };
+
+  // IE8 support
+  var indexOf = Array.prototype.indexOf || function(item) {
+    for (var i = 0, thisLen = this.length; i < thisLen; i++) {
+      if (this[i] === item) {
+        return i;
+      }
+    }
+    return -1;
+  };
+  
+  var defineProperty;
+  (function () {
+    try {
+      if (!!Object.defineProperty({}, 'a', {}))
+        defineProperty = Object.defineProperty;
+    }
+    catch (e) {
+      defineProperty = function(obj, prop, opt) {
+        try {
+          obj[prop] = opt.value || opt.get.call(obj);
+        }
+        catch(e) {}
+      }
+    }
+  })();
+
+  var errArgs = new Error(0, '_').fileName == '_';
+
+  function addToError(err, msg) {
+    // parse the stack removing loader code lines for simplification
+    if (!err.originalErr) {
+      var stack = ((err.message || err) + (err.stack ? '\n' + err.stack : '')).toString().split('\n');
+      var newStack = [];
+      for (var i = 0; i < stack.length; i++) {
+        if (typeof $__curScript == 'undefined' || stack[i].indexOf($__curScript.src) == -1)
+          newStack.push(stack[i]);
+      }
+    }
+
+    var newMsg = '(SystemJS) ' + (newStack ? newStack.join('\n\t') : err.message.substr(11)) + '\n\t' + msg;
+
+    // Convert file:/// URLs to paths in Node
+    if (!isBrowser)
+      newMsg = newMsg.replace(isWindows ? /file:\/\/\//g : /file:\/\//g, '');
+
+    var newErr = errArgs ? new Error(newMsg, err.fileName, err.lineNumber) : new Error(newMsg);
+    
+    newErr.stack = newMsg;
+        
+    // track the original error
+    newErr.originalErr = err.originalErr || err;
+
+    return newErr;
+  }
+
+  function __eval(source, debugName, context) {
+    try {
+      new Function(source).call(context);
+    }
+    catch(e) {
+      throw addToError(e, 'Evaluating ' + debugName);
+    }
+  }
+
+  var baseURI;
+
+  // environent baseURI detection
+  if (typeof document != 'undefined' && document.getElementsByTagName) {
+    baseURI = document.baseURI;
+
+    if (!baseURI) {
+      var bases = document.getElementsByTagName('base');
+      baseURI = bases[0] && bases[0].href || window.location.href;
+    }
+  }
+  else if (typeof location != 'undefined') {
+    baseURI = __global.location.href;
+  }
+
+  // sanitize out the hash and querystring
+  if (baseURI) {
+    baseURI = baseURI.split('#')[0].split('?')[0];
+    baseURI = baseURI.substr(0, baseURI.lastIndexOf('/') + 1);
+  }
+  else if (typeof process != 'undefined' && process.cwd) {
+    baseURI = 'file://' + (isWindows ? '/' : '') + process.cwd() + '/';
+    if (isWindows)
+      baseURI = baseURI.replace(/\\/g, '/');
+  }
+  else {
+    throw new TypeError('No environment baseURI');
+  }
+
+  try {
+    var nativeURL = new __global.URL('test:///').protocol == 'test:';
+  }
+  catch(e) {}
+
+  var URL = nativeURL ? __global.URL : __global.URLPolyfill;
+
+/*
+*********************************************************************************************
+
+  Dynamic Module Loader Polyfill
+
+    - Implemented exactly to the former 2014-08-24 ES6 Specification Draft Rev 27, Section 15
+      http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts#august_24_2014_draft_rev_27
+
+    - Functions are commented with their spec numbers, with spec differences commented.
+
+    - Spec bugs are commented in this code with links.
+
+    - Abstract functions have been combined where possible, and their associated functions
+      commented.
+
+    - Realm implementation is entirely omitted.
+
+*********************************************************************************************
+*/
+
+function Module() {}
+// http://www.ecma-international.org/ecma-262/6.0/#sec-@@tostringtag
+defineProperty(Module.prototype, 'toString', {
+  value: function() {
+    return 'Module';
+  }
+});
+function Loader(options) {
+  this._loader = {
+    loaderObj: this,
+    loads: [],
+    modules: {},
+    importPromises: {},
+    moduleRecords: {}
+  };
+
+  // 26.3.3.6
+  defineProperty(this, 'global', {
+    get: function() {
+      return __global;
+    }
+  });
+
+  // 26.3.3.13 realm not implemented
+}
+
+(function() {
+
+// Some Helpers
+
+// logs a linkset snapshot for debugging
+/* function snapshot(loader) {
+  console.log('---Snapshot---');
+  for (var i = 0; i < loader.loads.length; i++) {
+    var load = loader.loads[i];
+    var linkSetLog = '  ' + load.name + ' (' + load.status + '): ';
+
+    for (var j = 0; j < load.linkSets.length; j++) {
+      linkSetLog += '{' + logloads(load.linkSets[j].loads) + '} ';
+    }
+    console.log(linkSetLog);
+  }
+  console.log('');
+}
+function logloads(loads) {
+  var log = '';
+  for (var k = 0; k < loads.length; k++)
+    log += loads[k].name + (k != loads.length - 1 ? ' ' : '');
+  return log;
+} */
+
+
+/* function checkInvariants() {
+  // see https://bugs.ecmascript.org/show_bug.cgi?id=2603#c1
+
+  var loads = System._loader.loads;
+  var linkSets = [];
+
+  for (var i = 0; i < loads.length; i++) {
+    var load = loads[i];
+    console.assert(load.status == 'loading' || load.status == 'loaded', 'Each load is loading or loaded');
+
+    for (var j = 0; j < load.linkSets.length; j++) {
+      var linkSet = load.linkSets[j];
+
+      for (var k = 0; k < linkSet.loads.length; k++)
+        console.assert(loads.indexOf(linkSet.loads[k]) != -1, 'linkSet loads are a subset of loader loads');
+
+      if (linkSets.indexOf(linkSet) == -1)
+        linkSets.push(linkSet);
+    }
+  }
+
+  for (var i = 0; i < loads.length; i++) {
+    var load = loads[i];
+    for (var j = 0; j < linkSets.length; j++) {
+      var linkSet = linkSets[j];
+
+      if (linkSet.loads.indexOf(load) != -1)
+        console.assert(load.linkSets.indexOf(linkSet) != -1, 'linkSet contains load -> load contains linkSet');
+
+      if (load.linkSets.indexOf(linkSet) != -1)
+        console.assert(linkSet.loads.indexOf(load) != -1, 'load contains linkSet -> linkSet contains load');
+    }
+  }
+
+  for (var i = 0; i < linkSets.length; i++) {
+    var linkSet = linkSets[i];
+    for (var j = 0; j < linkSet.loads.length; j++) {
+      var load = linkSet.loads[j];
+
+      for (var k = 0; k < load.dependencies.length; k++) {
+        var depName = load.dependencies[k].value;
+        var depLoad;
+        for (var l = 0; l < loads.length; l++) {
+          if (loads[l].name != depName)
+            continue;
+          depLoad = loads[l];
+          break;
+        }
+
+        // loading records are allowed not to have their dependencies yet
+        // if (load.status != 'loading')
+        //  console.assert(depLoad, 'depLoad found');
+
+        // console.assert(linkSet.loads.indexOf(depLoad) != -1, 'linkset contains all dependencies');
+      }
+    }
+  }
+} */
+
+  // 15.2.3 - Runtime Semantics: Loader State
+
+  // 15.2.3.11
+  function createLoaderLoad(object) {
+    return {
+      // modules is an object for ES5 implementation
+      modules: {},
+      loads: [],
+      loaderObj: object
+    };
+  }
+
+  // 15.2.3.2 Load Records and LoadRequest Objects
+
+  var anonCnt = 0;
+
+  // 15.2.3.2.1
+  function createLoad(name) {
+    return {
+      status: 'loading',
+      name: name || '<Anonymous' + ++anonCnt + '>',
+      linkSets: [],
+      dependencies: [],
+      metadata: {}
+    };
+  }
+
+  // 15.2.3.2.2 createLoadRequestObject, absorbed into calling functions
+
+  // 15.2.4
+
+  // 15.2.4.1
+  function loadModule(loader, name, options) {
+    return new Promise(asyncStartLoadPartwayThrough({
+      step: options.address ? 'fetch' : 'locate',
+      loader: loader,
+      moduleName: name,
+      // allow metadata for import https://bugs.ecmascript.org/show_bug.cgi?id=3091
+      moduleMetadata: options && options.metadata || {},
+      moduleSource: options.source,
+      moduleAddress: options.address
+    }));
+  }
+
+  // 15.2.4.2
+  function requestLoad(loader, request, refererName, refererAddress) {
+    // 15.2.4.2.1 CallNormalize
+    return new Promise(function(resolve, reject) {
+      resolve(loader.loaderObj.normalize(request, refererName, refererAddress));
+    })
+    // 15.2.4.2.2 GetOrCreateLoad
+    .then(function(name) {
+      var load;
+      if (loader.modules[name]) {
+        load = createLoad(name);
+        load.status = 'linked';
+        // https://bugs.ecmascript.org/show_bug.cgi?id=2795
+        load.module = loader.modules[name];
+        return load;
+      }
+
+      for (var i = 0, l = loader.loads.length; i < l; i++) {
+        load = loader.loads[i];
+        if (load.name != name)
+          continue;
+        return load;
+      }
+
+      load = createLoad(name);
+      loader.loads.push(load);
+
+      proceedToLocate(loader, load);
+
+      return load;
+    });
+  }
+
+  // 15.2.4.3
+  function proceedToLocate(loader, load) {
+    proceedToFetch(loader, load,
+      Promise.resolve()
+      // 15.2.4.3.1 CallLocate
+      .then(function() {
+        return loader.loaderObj.locate({ name: load.name, metadata: load.metadata });
+      })
+    );
+  }
+
+  // 15.2.4.4
+  function proceedToFetch(loader, load, p) {
+    proceedToTranslate(loader, load,
+      p
+      // 15.2.4.4.1 CallFetch
+      .then(function(address) {
+        // adjusted, see https://bugs.ecmascript.org/show_bug.cgi?id=2602
+        if (load.status != 'loading')
+          return;
+        load.address = address;
+
+        return loader.loaderObj.fetch({ name: load.name, metadata: load.metadata, address: address });
+      })
+    );
+  }
+
+  // 15.2.4.5
+  function proceedToTranslate(loader, load, p) {
+    p
+    // 15.2.4.5.1 CallTranslate
+    .then(function(source) {
+      if (load.status != 'loading')
+        return;
+
+      load.address = load.address || load.name;
+
+      return Promise.resolve(loader.loaderObj.translate({ name: load.name, metadata: load.metadata, address: load.address, source: source }))
+
+      // 15.2.4.5.2 CallInstantiate
+      .then(function(source) {
+        load.source = source;
+        return loader.loaderObj.instantiate({ name: load.name, metadata: load.metadata, address: load.address, source: source });
+      })
+
+      // 15.2.4.5.3 InstantiateSucceeded
+      .then(function(instantiateResult) {
+        if (instantiateResult === undefined)
+          throw new TypeError('Declarative modules unsupported in the polyfill.');
+        
+        if (typeof instantiateResult != 'object')
+          throw new TypeError('Invalid instantiate return value');
+
+        load.depsList = instantiateResult.deps || [];
+        load.execute = instantiateResult.execute;
+      })
+      // 15.2.4.6 ProcessLoadDependencies
+      .then(function() {
+        load.dependencies = [];
+        var depsList = load.depsList;
+
+        var loadPromises = [];
+        for (var i = 0, l = depsList.length; i < l; i++) (function(request, index) {
+          loadPromises.push(
+            requestLoad(loader, request, load.name, load.address)
+
+            // 15.2.4.6.1 AddDependencyLoad (load is parentLoad)
+            .then(function(depLoad) {
+
+              // adjusted from spec to maintain dependency order
+              // this is due to the System.register internal implementation needs
+              load.dependencies[index] = {
+                key: request,
+                value: depLoad.name
+              };
+
+              if (depLoad.status != 'linked') {
+                var linkSets = load.linkSets.concat([]);
+                for (var i = 0, l = linkSets.length; i < l; i++)
+                  addLoadToLinkSet(linkSets[i], depLoad);
+              }
+
+              // console.log('AddDependencyLoad ' + depLoad.name + ' for ' + load.name);
+              // snapshot(loader);
+            })
+          );
+        })(depsList[i], i);
+
+        return Promise.all(loadPromises);
+      })
+
+      // 15.2.4.6.2 LoadSucceeded
+      .then(function() {
+        // console.log('LoadSucceeded ' + load.name);
+        // snapshot(loader);
+
+        load.status = 'loaded';
+
+        var linkSets = load.linkSets.concat([]);
+        for (var i = 0, l = linkSets.length; i < l; i++)
+          updateLinkSetOnLoad(linkSets[i], load);
+      });
+    })
+    // 15.2.4.5.4 LoadFailed
+    ['catch'](function(exc) {
+      load.status = 'failed';
+      load.exception = exc;
+
+      var linkSets = load.linkSets.concat([]);
+      for (var i = 0, l = linkSets.length; i < l; i++) {
+        linkSetFailed(linkSets[i], load, exc);
+      }
+
+      console.assert(load.linkSets.length == 0, 'linkSets not removed');
+    });
+  }
+
+  // 15.2.4.7 PromiseOfStartLoadPartwayThrough absorbed into calling functions
+
+  // 15.2.4.7.1
+  function asyncStartLoadPartwayThrough(stepState) {
+    return function(resolve, reject) {
+      var loader = stepState.loader;
+      var name = stepState.moduleName;
+      var step = stepState.step;
+
+      if (loader.modules[name])
+        throw new TypeError('"' + name + '" already exists in the module table');
+
+      // adjusted to pick up existing loads
+      var existingLoad;
+      for (var i = 0, l = loader.loads.length; i < l; i++) {
+        if (loader.loads[i].name == name) {
+          existingLoad = loader.loads[i];
+
+          if (step == 'translate' && !existingLoad.source) {
+            existingLoad.address = stepState.moduleAddress;
+            proceedToTranslate(loader, existingLoad, Promise.resolve(stepState.moduleSource));
+          }
+
+          // a primary load -> use that existing linkset if it is for the direct load here
+          // otherwise create a new linkset unit
+          if (existingLoad.linkSets.length && existingLoad.linkSets[0].loads[0].name == existingLoad.name)
+            return existingLoad.linkSets[0].done.then(function() {
+              resolve(existingLoad);
+            });
+        }
+      }
+
+      var load = existingLoad || createLoad(name);
+
+      load.metadata = stepState.moduleMetadata;
+
+      var linkSet = createLinkSet(loader, load);
+
+      loader.loads.push(load);
+
+      resolve(linkSet.done);
+
+      if (step == 'locate')
+        proceedToLocate(loader, load);
+
+      else if (step == 'fetch')
+        proceedToFetch(loader, load, Promise.resolve(stepState.moduleAddress));
+
+      else {
+        console.assert(step == 'translate', 'translate step');
+        load.address = stepState.moduleAddress;
+        proceedToTranslate(loader, load, Promise.resolve(stepState.moduleSource));
+      }
+    }
+  }
+
+  // Declarative linking functions run through alternative implementation:
+  // 15.2.5.1.1 CreateModuleLinkageRecord not implemented
+  // 15.2.5.1.2 LookupExport not implemented
+  // 15.2.5.1.3 LookupModuleDependency not implemented
+
+  // 15.2.5.2.1
+  function createLinkSet(loader, startingLoad) {
+    var linkSet = {
+      loader: loader,
+      loads: [],
+      startingLoad: startingLoad, // added see spec bug https://bugs.ecmascript.org/show_bug.cgi?id=2995
+      loadingCount: 0
+    };
+    linkSet.done = new Promise(function(resolve, reject) {
+      linkSet.resolve = resolve;
+      linkSet.reject = reject;
+    });
+    addLoadToLinkSet(linkSet, startingLoad);
+    return linkSet;
+  }
+  // 15.2.5.2.2
+  function addLoadToLinkSet(linkSet, load) {
+    if (load.status == 'failed')
+      return;
+
+    for (var i = 0, l = linkSet.loads.length; i < l; i++)
+      if (linkSet.loads[i] == load)
+        return;
+
+    linkSet.loads.push(load);
+    load.linkSets.push(linkSet);
+
+    // adjustment, see https://bugs.ecmascript.org/show_bug.cgi?id=2603
+    if (load.status != 'loaded') {
+      linkSet.loadingCount++;
+    }
+
+    var loader = linkSet.loader;
+
+    for (var i = 0, l = load.dependencies.length; i < l; i++) {
+      if (!load.dependencies[i])
+        continue;
+
+      var name = load.dependencies[i].value;
+
+      if (loader.modules[name])
+        continue;
+
+      for (var j = 0, d = loader.loads.length; j < d; j++) {
+        if (loader.loads[j].name != name)
+          continue;
+
+        addLoadToLinkSet(linkSet, loader.loads[j]);
+        break;
+      }
+    }
+    // console.log('add to linkset ' + load.name);
+    // snapshot(linkSet.loader);
+  }
+
+  // linking errors can be generic or load-specific
+  // this is necessary for debugging info
+  function doLink(linkSet) {
+    var error = false;
+    try {
+      link(linkSet, function(load, exc) {
+        linkSetFailed(linkSet, load, exc);
+        error = true;
+      });
+    }
+    catch(e) {
+      linkSetFailed(linkSet, null, e);
+      error = true;
+    }
+    return error;
+  }
+
+  // 15.2.5.2.3
+  function updateLinkSetOnLoad(linkSet, load) {
+    // console.log('update linkset on load ' + load.name);
+    // snapshot(linkSet.loader);
+
+    console.assert(load.status == 'loaded' || load.status == 'linked', 'loaded or linked');
+
+    linkSet.loadingCount--;
+
+    if (linkSet.loadingCount > 0)
+      return;
+
+    // adjusted for spec bug https://bugs.ecmascript.org/show_bug.cgi?id=2995
+    var startingLoad = linkSet.startingLoad;
+
+    // non-executing link variation for loader tracing
+    // on the server. Not in spec.
+    /***/
+    if (linkSet.loader.loaderObj.execute === false) {
+      var loads = [].concat(linkSet.loads);
+      for (var i = 0, l = loads.length; i < l; i++) {
+        var load = loads[i];
+        load.module = {
+          name: load.name,
+          module: _newModule({}),
+          evaluated: true
+        };
+        load.status = 'linked';
+        finishLoad(linkSet.loader, load);
+      }
+      return linkSet.resolve(startingLoad);
+    }
+    /***/
+
+    var abrupt = doLink(linkSet);
+
+    if (abrupt)
+      return;
+
+    console.assert(linkSet.loads.length == 0, 'loads cleared');
+
+    linkSet.resolve(startingLoad);
+  }
+
+  // 15.2.5.2.4
+  function linkSetFailed(linkSet, load, exc) {
+    var loader = linkSet.loader;
+    var requests;
+
+    checkError: 
+    if (load) {
+      if (linkSet.loads[0].name == load.name) {
+        exc = addToError(exc, 'Error loading ' + load.name);
+      }
+      else {
+        for (var i = 0; i < linkSet.loads.length; i++) {
+          var pLoad = linkSet.loads[i];
+          for (var j = 0; j < pLoad.dependencies.length; j++) {
+            var dep = pLoad.dependencies[j];
+            if (dep.value == load.name) {
+              exc = addToError(exc, 'Error loading ' + load.name + ' as "' + dep.key + '" from ' + pLoad.name);
+              break checkError;
+            }
+          }
+        }
+        exc = addToError(exc, 'Error loading ' + load.name + ' from ' + linkSet.loads[0].name);
+      }
+    }
+    else {
+      exc = addToError(exc, 'Error linking ' + linkSet.loads[0].name);
+    }
+
+
+    var loads = linkSet.loads.concat([]);
+    for (var i = 0, l = loads.length; i < l; i++) {
+      var load = loads[i];
+
+      // store all failed load records
+      loader.loaderObj.failed = loader.loaderObj.failed || [];
+      if (indexOf.call(loader.loaderObj.failed, load) == -1)
+        loader.loaderObj.failed.push(load);
+
+      var linkIndex = indexOf.call(load.linkSets, linkSet);
+      console.assert(linkIndex != -1, 'link not present');
+      load.linkSets.splice(linkIndex, 1);
+      if (load.linkSets.length == 0) {
+        var globalLoadsIndex = indexOf.call(linkSet.loader.loads, load);
+        if (globalLoadsIndex != -1)
+          linkSet.loader.loads.splice(globalLoadsIndex, 1);
+      }
+    }
+    linkSet.reject(exc);
+  }
+
+  // 15.2.5.2.5
+  function finishLoad(loader, load) {
+    // add to global trace if tracing
+    if (loader.loaderObj.trace) {
+      if (!loader.loaderObj.loads)
+        loader.loaderObj.loads = {};
+      var depMap = {};
+      load.dependencies.forEach(function(dep) {
+        depMap[dep.key] = dep.value;
+      });
+      loader.loaderObj.loads[load.name] = {
+        name: load.name,
+        deps: load.dependencies.map(function(dep){ return dep.key }),
+        depMap: depMap,
+        address: load.address,
+        metadata: load.metadata,
+        source: load.source
+      };
+    }
+    // if not anonymous, add to the module table
+    if (load.name) {
+      console.assert(!loader.modules[load.name] || loader.modules[load.name].module === load.module.module, 'load not in module table');
+      loader.modules[load.name] = load.module;
+    }
+    var loadIndex = indexOf.call(loader.loads, load);
+    if (loadIndex != -1)
+      loader.loads.splice(loadIndex, 1);
+    for (var i = 0, l = load.linkSets.length; i < l; i++) {
+      loadIndex = indexOf.call(load.linkSets[i].loads, load);
+      if (loadIndex != -1)
+        load.linkSets[i].loads.splice(loadIndex, 1);
+    }
+    load.linkSets.splice(0, load.linkSets.length);
+  }
+
+  function doDynamicExecute(linkSet, load, linkError) {
+    try {
+      var module = load.execute();
+    }
+    catch(e) {
+      linkError(load, e);
+      return;
+    }
+    if (!module || !(module instanceof Module))
+      linkError(load, new TypeError('Execution must define a Module instance'));
+    else
+      return module;
+  }
+
+  // 26.3 Loader
+
+  // 26.3.1.1
+  // defined at top
+
+  // importPromises adds ability to import a module twice without error - https://bugs.ecmascript.org/show_bug.cgi?id=2601
+  function createImportPromise(loader, name, promise) {
+    var importPromises = loader._loader.importPromises;
+    return importPromises[name] = promise.then(function(m) {
+      importPromises[name] = undefined;
+      return m;
+    }, function(e) {
+      importPromises[name] = undefined;
+      throw e;
+    });
+  }
+
+  Loader.prototype = {
+    // 26.3.3.1
+    constructor: Loader,
+    // 26.3.3.2
+    define: function(name, source, options) {
+      // check if already defined
+      if (this._loader.importPromises[name])
+        throw new TypeError('Module is already loading.');
+      return createImportPromise(this, name, new Promise(asyncStartLoadPartwayThrough({
+        step: 'translate',
+        loader: this._loader,
+        moduleName: name,
+        moduleMetadata: options && options.metadata || {},
+        moduleSource: source,
+        moduleAddress: options && options.address
+      })));
+    },
+    // 26.3.3.3
+    'delete': function(name) {
+      var loader = this._loader;
+      delete loader.importPromises[name];
+      delete loader.moduleRecords[name];
+      return loader.modules[name] ? delete loader.modules[name] : false;
+    },
+    // 26.3.3.4 entries not implemented
+    // 26.3.3.5
+    get: function(key) {
+      if (!this._loader.modules[key])
+        return;
+      return this._loader.modules[key].module;
+    },
+    // 26.3.3.7
+    has: function(name) {
+      return !!this._loader.modules[name];
+    },
+    // 26.3.3.8
+    'import': function(name, parentName, parentAddress) {
+      if (typeof parentName == 'object')
+        parentName = parentName.name;
+
+      // run normalize first
+      var loaderObj = this;
+
+      // added, see https://bugs.ecmascript.org/show_bug.cgi?id=2659
+      return Promise.resolve(loaderObj.normalize(name, parentName))
+      .then(function(name) {
+        var loader = loaderObj._loader;
+
+        if (loader.modules[name])
+          return loader.modules[name].module;
+
+        return loader.importPromises[name] || createImportPromise(loaderObj, name,
+          loadModule(loader, name, {})
+          .then(function(load) {
+            delete loader.importPromises[name];
+            return load.module.module;
+          }));
+      });
+    },
+    // 26.3.3.9 keys not implemented
+    // 26.3.3.10
+    load: function(name) {
+      var loader = this._loader;
+      if (loader.modules[name])
+        return Promise.resolve();
+      return loader.importPromises[name] || createImportPromise(this, name, new Promise(asyncStartLoadPartwayThrough({
+        step: 'locate',
+        loader: loader,
+        moduleName: name,
+        moduleMetadata: {},
+        moduleSource: undefined,
+        moduleAddress: undefined
+      }))
+      .then(function() {
+        delete loader.importPromises[name];
+      }));
+    },
+    // 26.3.3.11
+    module: function(source, options) {
+      var load = createLoad();
+      load.address = options && options.address;
+      var linkSet = createLinkSet(this._loader, load);
+      var sourcePromise = Promise.resolve(source);
+      var loader = this._loader;
+      var p = linkSet.done.then(function() {
+        return load.module.module;
+      });
+      proceedToTranslate(loader, load, sourcePromise);
+      return p;
+    },
+    // 26.3.3.12
+    newModule: function (obj) {
+      if (typeof obj != 'object')
+        throw new TypeError('Expected object');
+
+      var m = new Module();
+
+      var pNames = [];
+      if (Object.getOwnPropertyNames && obj != null)
+        pNames = Object.getOwnPropertyNames(obj);
+      else
+        for (var key in obj)
+          pNames.push(key);
+
+      for (var i = 0; i < pNames.length; i++) (function(key) {
+        defineProperty(m, key, {
+          configurable: false,
+          enumerable: true,
+          get: function () {
+            return obj[key];
+          },
+          set: function() {
+            throw new Error('Module exports cannot be changed externally.');
+          }
+        });
+      })(pNames[i]);
+
+      if (Object.freeze)
+        Object.freeze(m);
+
+      return m;
+    },
+    // 26.3.3.14
+    set: function(name, module) {
+      if (!(module instanceof Module))
+        throw new TypeError('Loader.set(' + name + ', module) must be a module');
+      this._loader.modules[name] = {
+        module: module
+      };
+    },
+    // 26.3.3.15 values not implemented
+    // 26.3.3.16 @@iterator not implemented
+    // 26.3.3.17 @@toStringTag not implemented
+
+    // 26.3.3.18.1
+    normalize: function(name, referrerName, referrerAddress) {},
+    // 26.3.3.18.2
+    locate: function(load) {
+      return load.name;
+    },
+    // 26.3.3.18.3
+    fetch: function(load) {
+    },
+    // 26.3.3.18.4
+    translate: function(load) {
+      return load.source;
+    },
+    // 26.3.3.18.5
+    instantiate: function(load) {
+    }
+  };
+
+  var _newModule = Loader.prototype.newModule;
+
+/*
+ * ES6 Module Declarative Linking Code
+ */
+  function link(linkSet, linkError) {
+
+    var loader = linkSet.loader;
+
+    if (!linkSet.loads.length)
+      return;
+
+    var loads = linkSet.loads.concat([]);
+
+    for (var i = 0; i < loads.length; i++) {
+      var load = loads[i];
+
+      var module = doDynamicExecute(linkSet, load, linkError);
+      if (!module)
+        return;
+      load.module = {
+        name: load.name,
+        module: module
+      };
+      load.status = 'linked';
+
+      finishLoad(loader, load);
+    }
+  }
+
+})();
+
+var System;
+
+// SystemJS Loader Class and Extension helpers
+function SystemJSLoader() {
+  Loader.call(this);
+
+  this.paths = {};
+  this._loader.paths = {};
+
+  systemJSConstructor.call(this);
+}
+
+// inline Object.create-style class extension
+function SystemProto() {};
+SystemProto.prototype = Loader.prototype;
+SystemJSLoader.prototype = new SystemProto();
+SystemJSLoader.prototype.constructor = SystemJSLoader;
+
+var systemJSConstructor;
+
+function hook(name, hook) {
+  SystemJSLoader.prototype[name] = hook(SystemJSLoader.prototype[name] || function() {});
+}
+function hookConstructor(hook) {
+  systemJSConstructor = hook(systemJSConstructor || function() {});
+}
+
+
+var absURLRegEx = /^[^\/]+:\/\//;
+function isAbsolute(name) {
+  return name.match(absURLRegEx);
+}
+function isRel(name) {
+  return (name[0] == '.' && (!name[1] || name[1] == '/' || name[1] == '.')) || name[0] == '/';
+}
+function isPlain(name) {
+  return !isRel(name) && !isAbsolute(name);
+}
+
+var baseURIObj = new URL(baseURI);
+
+function urlResolve(name, parent) {
+  // url resolution shortpaths
+  if (name[0] == '.') {
+    // dot-relative url normalization
+    if (name[1] == '/' && name[2] != '.')
+      return (parent && parent.substr(0, parent.lastIndexOf('/') + 1) || baseURI) + name.substr(2);
+  }
+  else if (name[0] != '/' && name.indexOf(':') == -1) {
+    // plain parent normalization
+    return (parent && parent.substr(0, parent.lastIndexOf('/') + 1) || baseURI) + name;
+  }
+
+  return new URL(name, parent && parent.replace(/#/g, '%05') || baseURIObj).href.replace(/%05/g, '#');
+}
+
+// NB no specification provided for System.paths, used ideas discussed in https://github.com/jorendorff/js-loaders/issues/25
+function applyPaths(loader, name) {
+  // most specific (most number of slashes in path) match wins
+  var pathMatch = '', wildcard, maxWildcardPrefixLen = 0;
+
+  var paths = loader.paths;
+  var pathsCache = loader._loader.paths;
+
+  // check to see if we have a paths entry
+  for (var p in paths) {
+    if (paths.hasOwnProperty && !paths.hasOwnProperty(p))
+      continue;
+
+    // paths sanitization
+    var path = paths[p];
+    if (path !== pathsCache[p])
+      path = paths[p] = pathsCache[p] = urlResolve(paths[p], isRel(paths[p]) ? baseURI : loader.baseURL);
+
+    // exact path match
+    if (p.indexOf('*') === -1) {
+      if (name == p)
+        return paths[p];
+      
+      // support trailing / in paths rules
+      else if (name.substr(0, p.length - 1) == p.substr(0, p.length - 1) && (name.length < p.length || name[p.length - 1] == p[p.length - 1]) && (paths[p][paths[p].length - 1] == '/' || paths[p] == '')) {
+        return paths[p].substr(0, paths[p].length - 1) + (name.length > p.length ? (paths[p] && '/' || '') + name.substr(p.length) : '');
+      }
+    }
+    // wildcard path match
+    else {
+      var pathParts = p.split('*');
+      if (pathParts.length > 2)
+        throw new TypeError('Only one wildcard in a path is permitted');
+
+      var wildcardPrefixLen = pathParts[0].length;
+      if (wildcardPrefixLen >= maxWildcardPrefixLen &&
+          name.substr(0, pathParts[0].length) == pathParts[0] &&
+          name.substr(name.length - pathParts[1].length) == pathParts[1]) {
+            maxWildcardPrefixLen = wildcardPrefixLen;
+            pathMatch = p;
+            wildcard = name.substr(pathParts[0].length, name.length - pathParts[1].length - pathParts[0].length);
+          }
+    }
+  }
+
+  var outPath = paths[pathMatch];
+  if (typeof wildcard == 'string')
+    outPath = outPath.replace('*', wildcard);
+
+  return outPath;
+}
+
+function dedupe(deps) {
+  var newDeps = [];
+  for (var i = 0, l = deps.length; i < l; i++)
+    if (indexOf.call(newDeps, deps[i]) == -1)
+      newDeps.push(deps[i])
+  return newDeps;
+}
+
+function group(deps) {
+  var names = [];
+  var indices = [];
+  for (var i = 0, l = deps.length; i < l; i++) {
+    var index = indexOf.call(names, deps[i]);
+    if (index === -1) {
+      names.push(deps[i]);
+      indices.push([i]);
+    }
+    else {
+      indices[index].push(i);
+    }
+  }
+  return { names: names, indices: indices };
+}
+
+var getOwnPropertyDescriptor = true;
+try {
+  Object.getOwnPropertyDescriptor({ a: 0 }, 'a');
+}
+catch(e) {
+  getOwnPropertyDescriptor = false;
+}
+
+// converts any module.exports object into an object ready for SystemJS.newModule
+function getESModule(exports) {
+  var esModule = {};
+  // don't trigger getters/setters in environments that support them
+  if ((typeof exports == 'object' || typeof exports == 'function') && exports !== __global) {
+      if (getOwnPropertyDescriptor) {
+        for (var p in exports) {
+          // The default property is copied to esModule later on
+          if (p === 'default')
+            continue;
+          defineOrCopyProperty(esModule, exports, p);
+        }
+      }
+      else {
+        extend(esModule, exports);
+      }
+  }
+  esModule['default'] = exports;
+  defineProperty(esModule, '__useDefault', {
+    value: true
+  });
+  return esModule;
+}
+
+function defineOrCopyProperty(targetObj, sourceObj, propName) {
+  try {
+    var d;
+    if (d = Object.getOwnPropertyDescriptor(sourceObj, propName))
+      defineProperty(targetObj, propName, d);
+  }
+  catch (ex) {
+    // Object.getOwnPropertyDescriptor threw an exception, fall back to normal set property
+    // we dont need hasOwnProperty here because getOwnPropertyDescriptor would have returned undefined above
+    targetObj[propName] = sourceObj[propName];
+    return false;
+  }
+}
+
+function extend(a, b, prepend) {
+  var hasOwnProperty = b && b.hasOwnProperty;
+  for (var p in b) {
+    if (hasOwnProperty && !b.hasOwnProperty(p))
+      continue;
+    if (!prepend || !(p in a))
+      a[p] = b[p];
+  }
+  return a;
+}
+
+// meta first-level extends where:
+// array + array appends
+// object + object extends
+// other properties replace
+function extendMeta(a, b, prepend) {
+  var hasOwnProperty = b && b.hasOwnProperty;
+  for (var p in b) {
+    if (hasOwnProperty && !b.hasOwnProperty(p))
+      continue;
+    var val = b[p];
+    if (!(p in a))
+      a[p] = val;
+    else if (val instanceof Array && a[p] instanceof Array)
+      a[p] = [].concat(prepend ? val : a[p]).concat(prepend ? a[p] : val);
+    else if (typeof val == 'object' && val !== null && typeof a[p] == 'object')
+      a[p] = extend(extend({}, a[p]), val, prepend);
+    else if (!prepend)
+      a[p] = val;
+  }
+}
+
+function extendPkgConfig(pkgCfgA, pkgCfgB, pkgName, loader, warnInvalidProperties) {
+  for (var prop in pkgCfgB) {
+    if (indexOf.call(['main', 'format', 'defaultExtension', 'basePath'], prop) != -1) {
+      pkgCfgA[prop] = pkgCfgB[prop];
+    }
+    else if (prop == 'map') {
+      extend(pkgCfgA.map = pkgCfgA.map || {}, pkgCfgB.map);
+    }
+    else if (prop == 'meta') {
+      extend(pkgCfgA.meta = pkgCfgA.meta || {}, pkgCfgB.meta);
+    }
+    else if (prop == 'depCache') {
+      for (var d in pkgCfgB.depCache) {
+        var dNormalized;
+
+        if (d.substr(0, 2) == './')
+          dNormalized = pkgName + '/' + d.substr(2);
+        else
+          dNormalized = coreResolve.call(loader, d);
+        loader.depCache[dNormalized] = (loader.depCache[dNormalized] || []).concat(pkgCfgB.depCache[d]);
+      }
+    }
+    else if (warnInvalidProperties && indexOf.call(['browserConfig', 'nodeConfig', 'devConfig', 'productionConfig'], prop) == -1 && 
+        (!pkgCfgB.hasOwnProperty || pkgCfgB.hasOwnProperty(prop))) {
+      warn.call(loader, '"' + prop + '" is not a valid package configuration option in package ' + pkgName);
+    }
+  }
+}
+
+// deeply-merge (to first level) config with any existing package config
+function setPkgConfig(loader, pkgName, cfg, prependConfig) {
+  var pkg;
+
+  // first package is config by reference for fast path, cloned after that
+  if (!loader.packages[pkgName]) {
+    pkg = loader.packages[pkgName] = cfg;
+  }
+  else {
+    var basePkg = loader.packages[pkgName];
+    pkg = loader.packages[pkgName] = {};
+
+    extendPkgConfig(pkg, prependConfig ? cfg : basePkg, pkgName, loader, prependConfig);
+    extendPkgConfig(pkg, prependConfig ? basePkg : cfg, pkgName, loader, !prependConfig);
+  }
+  
+  // main object becomes main map
+  if (typeof pkg.main == 'object') {
+    pkg.map = pkg.map || {};
+    pkg.map['./@main'] = pkg.main;
+    pkg.main['default'] = pkg.main['default'] || './';
+    pkg.main = '@main';
+  }
+
+  return pkg;
+}
+
+function warn(msg) {
+  if (this.warnings && typeof console != 'undefined' && console.warn)
+    console.warn(msg);
+}
+var absURLRegEx = /^([^\/]+:\/\/|\/)/;
+
+// Normalization with module names as absolute URLs
+SystemJSLoader.prototype.normalize = function(name, parentName, parentAddress) {
+  // NB does `import 'file.js'` import relative to the parent name or baseURL?
+  //    have assumed that it is baseURL-relative here, but spec may well align with URLs to be the latter
+  //    safe option for users is to always use "./file.js" for relative
+
+  // not absolute or relative -> apply paths (what will be sites)
+  if (!name.match(absURLRegEx) && name[0] != '.')
+    name = new URL(applyPaths(this, name) || name, baseURI).href;
+  // apply parent-relative normalization, parentAddress is already normalized
+  else
+    name = new URL(name, parentName || baseURI).href;
+
+  return name;
+};
+
+// default locate is this
+/*
+SystemJSLoader.prototype.locate = function(load) {
+  return load.name;
+};
+*//*
+ * Script tag fetch
+ *
+ * When load.metadata.scriptLoad is true, we load via script tag injection.
+ */
+(function() {
+
+  if (typeof document != 'undefined')
+    var head = document.getElementsByTagName('head')[0];
+
+  var curSystem;
+  var curRequire;
+
+  // if doing worker executing, this is set to the load record being executed
+  var workerLoad = null;
+  
+  // interactive mode handling method courtesy RequireJS
+  var ieEvents = head && (function() {
+    var s = document.createElement('script');
+    var isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]';
+    return s.attachEvent && !(s.attachEvent.toString && s.attachEvent.toString().indexOf('[native code') < 0) && !isOpera;
+  })();
+
+  // IE interactive-only part
+  // we store loading scripts array as { script: <script>, load: {...} }
+  var interactiveLoadingScripts = [];
+  var interactiveScript;
+  function getInteractiveScriptLoad() {
+    if (interactiveScript && interactiveScript.script.readyState === 'interactive')
+      return interactiveScript.load;
+
+    for (var i = 0; i < interactiveLoadingScripts.length; i++)
+      if (interactiveLoadingScripts[i].script.readyState == 'interactive') {
+        interactiveScript = interactiveLoadingScripts[i];
+        return interactiveScript.load;
+      }
+  }
+  
+  // System.register, System.registerDynamic, AMD define pipeline
+  // this is called by the above methods when they execute
+  // we then run the reduceRegister_ collection function either immediately
+  // if we are in IE and know the currently executing script (interactive)
+  // or later if we need to wait for the synchronous load callback to know the script
+  var loadingCnt = 0;
+  var registerQueue = [];
+  hook('pushRegister_', function(pushRegister) {
+    return function(register) {
+      // if using eval-execution then skip
+      if (pushRegister.call(this, register))
+        return false;
+
+      // if using worker execution, then we're done
+      if (workerLoad)
+        this.reduceRegister_(workerLoad, register);
+
+      // detect if we know the currently executing load (IE)
+      // if so, immediately call reduceRegister
+      else if (ieEvents)
+        this.reduceRegister_(getInteractiveScriptLoad(), register);
+
+      // otherwise, add to our execution queue
+      // to call reduceRegister on sync script load event
+      else if (loadingCnt)
+        registerQueue.push(register);
+
+      // if we're not currently loading anything though
+      // then do the reduction against a null load
+      // (out of band named define or named register)
+      // note even in non-script environments, this catch is used
+      else
+        this.reduceRegister_(null, register);
+
+      return true;
+    };
+  });
+
+  function webWorkerImport(loader, load) {
+    return new Promise(function(resolve, reject) {
+      if (load.metadata.integrity)
+        reject(new Error('Subresource integrity checking is not supported in web workers.'));
+
+      workerLoad = load;
+      try {
+        importScripts(load.address);
+      }
+      catch(e) {
+        workerLoad = null;
+        reject(e);
+      }
+      workerLoad = null;
+
+      // if nothing registered, then something went wrong
+      if (!load.metadata.entry)
+        reject(new Error(load.address + ' did not call System.register or AMD define. If loading a global, ensure the meta format is set to global.'));
+
+      resolve('');
+    });
+  }
+
+  // override fetch to use script injection
+  hook('fetch', function(fetch) {
+    return function(load) {
+      var loader = this;
+
+      if (load.metadata.format == 'json' || !load.metadata.scriptLoad || (!isBrowser && !isWorker))
+        return fetch.call(this, load);
+
+      if (isWorker)
+        return webWorkerImport(loader, load);
+
+      return new Promise(function(resolve, reject) {
+        var s = document.createElement('script');
+        
+        s.async = true;
+
+        if (load.metadata.crossOrigin)
+          s.crossOrigin = load.metadata.crossOrigin;
+
+        if (load.metadata.integrity)
+          s.setAttribute('integrity', load.metadata.integrity);
+
+        if (ieEvents) {
+          s.attachEvent('onreadystatechange', complete);
+          interactiveLoadingScripts.push({
+            script: s,
+            load: load
+          });
+        }
+        else {
+          s.addEventListener('load', complete, false);
+          s.addEventListener('error', error, false);
+        }
+
+        loadingCnt++;
+
+        curSystem = __global.System;
+        curRequire = __global.require;
+
+        s.src = load.address;
+        head.appendChild(s);
+
+        function complete(evt) {
+          if (s.readyState && s.readyState != 'loaded' && s.readyState != 'complete')
+            return;
+
+          loadingCnt--;
+
+          // complete call is sync on execution finish
+          // (in ie already done reductions)
+          if (!load.metadata.entry && !registerQueue.length) {
+            loader.reduceRegister_(load);
+          }
+          else if (!ieEvents) {
+            for (var i = 0; i < registerQueue.length; i++)
+              loader.reduceRegister_(load, registerQueue[i]);
+            registerQueue = [];
+          }
+
+          cleanup();
+
+          // if nothing registered, then something went wrong
+          if (!load.metadata.entry && !load.metadata.bundle)
+            reject(new Error(load.name + ' did not call System.register or AMD define. If loading a global module configure the global name via the meta exports property for script injection support.'));
+
+          resolve('');
+        }
+
+        function error(evt) {
+          cleanup();
+          reject(new Error('Unable to load script ' + load.address));
+        }
+
+        function cleanup() {
+          __global.System = curSystem;
+          __global.require = curRequire;
+
+          if (s.detachEvent) {
+            s.detachEvent('onreadystatechange', complete);
+            for (var i = 0; i < interactiveLoadingScripts.length; i++)
+              if (interactiveLoadingScripts[i].script == s) {
+                if (interactiveScript && interactiveScript.script == s)
+                  interactiveScript = null;
+                interactiveLoadingScripts.splice(i, 1);
+              }
+          }
+          else {
+            s.removeEventListener('load', complete, false);
+            s.removeEventListener('error', error, false);
+          }
+
+          head.removeChild(s);
+        }
+      });
+    };
+  });
+})();
+/*
+ * Instantiate registry extension
+ *
+ * Supports Traceur System.register 'instantiate' output for loading ES6 as ES5.
+ *
+ * - Creates the loader.register function
+ * - Also supports metadata.format = 'register' in instantiate for anonymous register modules
+ * - Also supports metadata.deps, metadata.execute and metadata.executingRequire
+ *     for handling dynamic modules alongside register-transformed ES6 modules
+ *
+ *
+ * The code here replicates the ES6 linking groups algorithm to ensure that
+ * circular ES6 compiled into System.register can work alongside circular AMD 
+ * and CommonJS, identically to the actual ES6 loader.
+ *
+ */
+
+
+/*
+ * Registry side table entries in loader.defined
+ * Registry Entry Contains:
+ *    - name
+ *    - deps 
+ *    - declare for declarative modules
+ *    - execute for dynamic modules, different to declarative execute on module
+ *    - executingRequire indicates require drives execution for circularity of dynamic modules
+ *    - declarative optional boolean indicating which of the above
+ *
+ * Can preload modules directly on SystemJS.defined['my/module'] = { deps, execute, executingRequire }
+ *
+ * Then the entry gets populated with derived information during processing:
+ *    - normalizedDeps derived from deps, created in instantiate
+ *    - groupIndex used by group linking algorithm
+ *    - evaluated indicating whether evaluation has happend
+ *    - module the module record object, containing:
+ *      - exports actual module exports
+ *
+ *    For dynamic we track the es module with:
+ *    - esModule actual es module value
+ *    - esmExports whether to extend the esModule with named exports
+ *      
+ *    Then for declarative only we track dynamic bindings with the 'module' records:
+ *      - name
+ *      - exports
+ *      - setters declarative setter functions
+ *      - dependencies, module records of dependencies
+ *      - importers, module records of dependents
+ *
+ * After linked and evaluated, entries are removed, declarative module records remain in separate
+ * module binding table
+ *
+ */
+
+var leadingCommentAndMetaRegEx = /^(\s*\/\*[^\*]*(\*(?!\/)[^\*]*)*\*\/|\s*\/\/[^\n]*|\s*"[^"]+"\s*;?|\s*'[^']+'\s*;?)*\s*/;
+function detectRegisterFormat(source) {
+  var leadingCommentAndMeta = source.match(leadingCommentAndMetaRegEx);
+  return leadingCommentAndMeta && source.substr(leadingCommentAndMeta[0].length, 15) == 'System.register';
+}
+
+function createEntry() {
+  return {
+    name: null,
+    deps: null,
+    originalIndices: null,
+    declare: null,
+    execute: null,
+    executingRequire: false,
+    declarative: false,
+    normalizedDeps: null,
+    groupIndex: null,
+    evaluated: false,
+    module: null,
+    esModule: null,
+    esmExports: false
+  };
+}
+
+(function() {
+
+  /*
+   * There are two variations of System.register:
+   * 1. System.register for ES6 conversion (2-3 params) - System.register([name, ]deps, declare)
+   *    see https://github.com/ModuleLoader/es6-module-loader/wiki/System.register-Explained
+   *
+   * 2. System.registerDynamic for dynamic modules (3-4 params) - System.registerDynamic([name, ]deps, executingRequire, execute)
+   * the true or false statement 
+   *
+   * this extension implements the linking algorithm for the two variations identical to the spec
+   * allowing compiled ES6 circular references to work alongside AMD and CJS circular references.
+   *
+   */
+  SystemJSLoader.prototype.register = function(name, deps, declare) {
+    if (typeof name != 'string') {
+      declare = deps;
+      deps = name;
+      name = null;
+    }
+
+    // dynamic backwards-compatibility
+    // can be deprecated eventually
+    if (typeof declare == 'boolean')
+      return this.registerDynamic.apply(this, arguments);
+
+    var entry = createEntry();
+    // ideally wouldn't apply map config to bundle names but 
+    // dependencies go through map regardless so we can't restrict
+    // could reconsider in shift to new spec
+    entry.name = name && (this.decanonicalize || this.normalize).call(this, name);
+    entry.declarative = true;
+    entry.deps = deps;
+    entry.declare = declare;
+
+    this.pushRegister_({
+      amd: false,
+      entry: entry
+    });
+  };
+  SystemJSLoader.prototype.registerDynamic = function(name, deps, declare, execute) {
+    if (typeof name != 'string') {
+      execute = declare;
+      declare = deps;
+      deps = name;
+      name = null;
+    }
+
+    // dynamic
+    var entry = createEntry();
+    entry.name = name && (this.decanonicalize || this.normalize).call(this, name);
+    entry.deps = deps;
+    entry.execute = execute;
+    entry.executingRequire = declare;
+
+    this.pushRegister_({
+      amd: false,
+      entry: entry
+    });
+  };
+  hook('reduceRegister_', function() {
+    return function(load, register) {
+      if (!register)
+        return;
+
+      var entry = register.entry;
+      var curMeta = load && load.metadata;
+
+      // named register
+      if (entry.name) {
+        if (!(entry.name in this.defined))
+          this.defined[entry.name] = entry;
+
+        if (curMeta)
+          curMeta.bundle = true;
+      }
+      // anonymous register
+      if (!entry.name || load && !curMeta.entry && entry.name == load.name) {
+        if (!curMeta)
+          throw new TypeError('Invalid System.register call. Anonymous System.register calls can only be made by modules loaded by SystemJS.import and not via script tags.');
+        if (curMeta.entry) {
+          if (curMeta.format == 'register')
+            throw new Error('Multiple anonymous System.register calls in module ' + load.name + '. If loading a bundle, ensure all the System.register calls are named.');
+          else
+            throw new Error('Module ' + load.name + ' interpreted as ' + curMeta.format + ' module format, but called System.register.');
+        }
+        if (!curMeta.format)
+          curMeta.format = 'register';
+        curMeta.entry = entry;
+      }
+    };
+  });
+
+  hookConstructor(function(constructor) {
+    return function() {
+      constructor.call(this);
+
+      this.defined = {};
+      this._loader.moduleRecords = {};
+    };
+  });
+
+  function buildGroups(entry, loader, groups) {
+    groups[entry.groupIndex] = groups[entry.groupIndex] || [];
+
+    if (indexOf.call(groups[entry.groupIndex], entry) != -1)
+      return;
+
+    groups[entry.groupIndex].push(entry);
+
+    for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
+      var depName = entry.normalizedDeps[i];
+      var depEntry = loader.defined[depName];
+      
+      // not in the registry means already linked / ES6
+      if (!depEntry || depEntry.evaluated)
+        continue;
+      
+      // now we know the entry is in our unlinked linkage group
+      var depGroupIndex = entry.groupIndex + (depEntry.declarative != entry.declarative);
+
+      // the group index of an entry is always the maximum
+      if (depEntry.groupIndex === null || depEntry.groupIndex < depGroupIndex) {
+        
+        // if already in a group, remove from the old group
+        if (depEntry.groupIndex !== null) {
+          groups[depEntry.groupIndex].splice(indexOf.call(groups[depEntry.groupIndex], depEntry), 1);
+
+          // if the old group is empty, then we have a mixed depndency cycle
+          if (groups[depEntry.groupIndex].length == 0)
+            throw new Error("Mixed dependency cycle detected");
+        }
+
+        depEntry.groupIndex = depGroupIndex;
+      }
+
+      buildGroups(depEntry, loader, groups);
+    }
+  }
+
+  function link(name, startEntry, loader) {
+    // skip if already linked
+    if (startEntry.module)
+      return;
+
+    startEntry.groupIndex = 0;
+
+    var groups = [];
+
+    buildGroups(startEntry, loader, groups);
+
+    var curGroupDeclarative = !!startEntry.declarative == groups.length % 2;
+    for (var i = groups.length - 1; i >= 0; i--) {
+      var group = groups[i];
+      for (var j = 0; j < group.length; j++) {
+        var entry = group[j];
+
+        // link each group
+        if (curGroupDeclarative)
+          linkDeclarativeModule(entry, loader);
+        else
+          linkDynamicModule(entry, loader);
+      }
+      curGroupDeclarative = !curGroupDeclarative; 
+    }
+  }
+
+  // module binding records
+  function ModuleRecord() {}
+  defineProperty(ModuleRecord, 'toString', {
+    value: function() {
+      return 'Module';
+    }
+  });
+
+  function getOrCreateModuleRecord(name, moduleRecords) {
+    return moduleRecords[name] || (moduleRecords[name] = {
+      name: name,
+      dependencies: [],
+      exports: new ModuleRecord(), // start from an empty module and extend
+      importers: []
+    });
+  }
+
+  function linkDeclarativeModule(entry, loader) {
+    // only link if already not already started linking (stops at circular)
+    if (entry.module)
+      return;
+
+    var moduleRecords = loader._loader.moduleRecords;
+    var module = entry.module = getOrCreateModuleRecord(entry.name, moduleRecords);
+    var exports = entry.module.exports;
+
+    var declaration = entry.declare.call(__global, function(name, value) {
+      module.locked = true;
+
+      if (typeof name == 'object') {
+        for (var p in name)
+          exports[p] = name[p];
+      }
+      else {
+        exports[name] = value;
+      }
+
+      for (var i = 0, l = module.importers.length; i < l; i++) {
+        var importerModule = module.importers[i];
+        if (!importerModule.locked) {
+          var importerIndex = indexOf.call(importerModule.dependencies, module);
+          var setter = importerModule.setters[importerIndex];
+          if (setter)
+            setter(exports);
+        }
+      }
+
+      module.locked = false;
+      return value;
+    }, { id: entry.name });
+
+    if (typeof declaration == 'function')
+      declaration = { setters: [], execute: declaration };
+
+    // allowing undefined declaration was a mistake! To be deprecated.
+    declaration = declaration || { setters: [], execute: function() {} };
+    
+    module.setters = declaration.setters;
+    module.execute = declaration.execute;
+
+    if (!module.setters || !module.execute) {
+      throw new TypeError('Invalid System.register form for ' + entry.name);
+    }
+
+    // now link all the module dependencies
+    for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
+      var depName = entry.normalizedDeps[i];
+      var depEntry = loader.defined[depName];
+      var depModule = moduleRecords[depName];
+
+      // work out how to set depExports based on scenarios...
+      var depExports;
+
+      if (depModule) {
+        depExports = depModule.exports;
+      }
+      // dynamic, already linked in our registry
+      else if (depEntry && !depEntry.declarative) {
+        depExports = depEntry.esModule;
+      }
+      // in the loader registry
+      else if (!depEntry) {
+        depExports = loader.get(depName);
+      }
+      // we have an entry -> link
+      else {
+        linkDeclarativeModule(depEntry, loader);
+        depModule = depEntry.module;
+        depExports = depModule.exports;
+      }
+
+      // only declarative modules have dynamic bindings
+      if (depModule && depModule.importers) {
+        depModule.importers.push(module);
+        module.dependencies.push(depModule);
+      }
+      else {
+        module.dependencies.push(null);
+      }
+      
+      // run setters for all entries with the matching dependency name
+      var originalIndices = entry.originalIndices[i];
+      for (var j = 0, len = originalIndices.length; j < len; ++j) {
+        var index = originalIndices[j];
+        if (module.setters[index]) {
+          module.setters[index](depExports);
+        }
+      }
+    }
+  }
+
+  // An analog to loader.get covering execution of all three layers (real declarative, simulated declarative, simulated dynamic)
+  function getModule(name, loader) {
+    var exports;
+    var entry = loader.defined[name];
+
+    if (!entry) {
+      exports = loader.get(name);
+      if (!exports)
+        throw new Error('Unable to load dependency ' + name + '.');
+    }
+
+    else {
+      if (entry.declarative)
+        ensureEvaluated(name, entry, [], loader);
+    
+      else if (!entry.evaluated)
+        linkDynamicModule(entry, loader);
+
+      exports = entry.module.exports;
+    }
+
+    if ((!entry || entry.declarative) && exports && exports.__useDefault)
+      return exports['default'];
+    
+    return exports;
+  }
+
+  function linkDynamicModule(entry, loader) {
+    if (entry.module)
+      return;
+
+    var exports = {};
+
+    var module = entry.module = { exports: exports, id: entry.name };
+
+    // AMD requires execute the tree first
+    if (!entry.executingRequire) {
+      for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
+        var depName = entry.normalizedDeps[i];
+        // we know we only need to link dynamic due to linking algorithm
+        var depEntry = loader.defined[depName];
+        if (depEntry)
+          linkDynamicModule(depEntry, loader);
+      }
+    }
+
+    // now execute
+    entry.evaluated = true;
+    var output = entry.execute.call(__global, function(name) {
+      for (var i = 0, l = entry.deps.length; i < l; i++) {
+        if (entry.deps[i] != name)
+          continue;
+        return getModule(entry.normalizedDeps[i], loader);
+      }
+      // try and normalize the dependency to see if we have another form
+      var nameNormalized = loader.normalizeSync(name, entry.name);
+      if (indexOf.call(entry.normalizedDeps, nameNormalized) != -1)
+        return getModule(nameNormalized, loader);
+
+      throw new Error('Module ' + name + ' not declared as a dependency of ' + entry.name);
+    }, exports, module);
+    
+    if (output !== undefined)
+      module.exports = output;
+
+    // create the esModule object, which allows ES6 named imports of dynamics
+    exports = module.exports;
+
+    // __esModule flag treats as already-named
+    if (exports && (exports.__esModule || exports instanceof Module))
+      entry.esModule = loader.newModule(exports);
+    // set module as 'default' export, then fake named exports by iterating properties
+    else if (entry.esmExports && exports !== __global)
+      entry.esModule = loader.newModule(getESModule(exports));
+    // just use the 'default' export
+    else
+      entry.esModule = loader.newModule({ 'default': exports, __useDefault: true });
+  }
+
+  /*
+   * Given a module, and the list of modules for this current branch,
+   *  ensure that each of the dependencies of this module is evaluated
+   *  (unless one is a circular dependency already in the list of seen
+   *  modules, in which case we execute it)
+   *
+   * Then we evaluate the module itself depth-first left to right 
+   * execution to match ES6 modules
+   */
+  function ensureEvaluated(moduleName, entry, seen, loader) {
+    // if already seen, that means it's an already-evaluated non circular dependency
+    if (!entry || entry.evaluated || !entry.declarative)
+      return;
+
+    // this only applies to declarative modules which late-execute
+
+    seen.push(moduleName);
+
+    for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
+      var depName = entry.normalizedDeps[i];
+      if (indexOf.call(seen, depName) == -1) {
+        if (!loader.defined[depName])
+          loader.get(depName);
+        else
+          ensureEvaluated(depName, loader.defined[depName], seen, loader);
+      }
+    }
+
+    if (entry.evaluated)
+      return;
+
+    entry.evaluated = true;
+    entry.module.execute.call(__global);
+  }
+
+  // override the delete method to also clear the register caches
+  hook('delete', function(del) {
+    return function(name) {
+      delete this._loader.moduleRecords[name];
+      delete this.defined[name];
+      return del.call(this, name);
+    };
+  });
+
+  hook('fetch', function(fetch) {
+    return function(load) {
+      if (this.defined[load.name]) {
+        load.metadata.format = 'defined';
+        return '';
+      }
+
+      load.metadata.deps = load.metadata.deps || [];
+      
+      return fetch.call(this, load);
+    };
+  });
+
+  hook('translate', function(translate) {
+    // we run the meta detection here (register is after meta)
+    return function(load) {
+      load.metadata.deps = load.metadata.deps || [];
+      return Promise.resolve(translate.apply(this, arguments)).then(function(source) {
+        // run detection for register format
+        if (load.metadata.format == 'register' || !load.metadata.format && detectRegisterFormat(load.source))
+          load.metadata.format = 'register';
+        return source;
+      });
+    };
+  });
+
+  // implement a perforance shortpath for System.load with no deps
+  hook('load', function(doLoad) {
+    return function(normalized) {
+      var loader = this;
+      var entry = loader.defined[normalized];
+
+      if (!entry || entry.deps.length)
+        return doLoad.apply(this, arguments);
+
+      entry.originalIndices = entry.normalizedDeps = [];
+
+      // recursively ensure that the module and all its 
+      // dependencies are linked (with dependency group handling)
+      link(normalized, entry, loader);
+
+      // now handle dependency execution in correct order
+      ensureEvaluated(normalized, entry, [], loader);
+      if (!entry.esModule)
+        entry.esModule = loader.newModule(entry.module.exports);
+
+      // remove from the registry
+      if (!loader.trace)
+        loader.defined[normalized] = undefined;
+
+      // return the defined module object
+      loader.set(normalized, entry.esModule);
+
+      return Promise.resolve();
+    };
+  });
+
+  hook('instantiate', function(instantiate) {
+    return function(load) {
+      if (load.metadata.format == 'detect')
+        load.metadata.format = undefined;
+
+      // assumes previous instantiate is sync
+      // (core json support)
+      instantiate.call(this, load);
+
+      var loader = this;
+
+      var entry;
+
+      // first we check if this module has already been defined in the registry
+      if (loader.defined[load.name]) {
+        entry = loader.defined[load.name];
+        // don't support deps for ES modules
+        if (!entry.declarative)
+          entry.deps = entry.deps.concat(load.metadata.deps);
+        entry.deps = entry.deps.concat(load.metadata.deps);
+      }
+
+      // picked up already by an anonymous System.register script injection
+      // or via the dynamic formats
+      else if (load.metadata.entry) {
+        entry = load.metadata.entry;
+        entry.deps = entry.deps.concat(load.metadata.deps);
+      }
+
+      // Contains System.register calls
+      // (dont run bundles in the builder)
+      else if (!(loader.builder && load.metadata.bundle) 
+          && (load.metadata.format == 'register' || load.metadata.format == 'esm' || load.metadata.format == 'es6')) {
+        
+        if (typeof __exec != 'undefined')
+          __exec.call(loader, load);
+
+        if (!load.metadata.entry && !load.metadata.bundle)
+          throw new Error(load.name + ' detected as ' + load.metadata.format + ' but didn\'t execute.');
+
+        entry = load.metadata.entry;
+
+        // support metadata deps for System.register
+        if (entry && load.metadata.deps)
+          entry.deps = entry.deps.concat(load.metadata.deps);
+      }
+
+      // named bundles are just an empty module
+      if (!entry) {
+        entry = createEntry();
+        entry.deps = load.metadata.deps;
+        entry.execute = function() {};
+      }
+
+      // place this module onto defined for circular references
+      loader.defined[load.name] = entry;
+      
+      var grouped = group(entry.deps);
+      
+      entry.deps = grouped.names;
+      entry.originalIndices = grouped.indices;
+      entry.name = load.name;
+      entry.esmExports = load.metadata.esmExports !== false;
+
+      // first, normalize all dependencies
+      var normalizePromises = [];
+      for (var i = 0, l = entry.deps.length; i < l; i++)
+        normalizePromises.push(Promise.resolve(loader.normalize(entry.deps[i], load.name)));
+
+      return Promise.all(normalizePromises).then(function(normalizedDeps) {
+
+        entry.normalizedDeps = normalizedDeps;
+
+        return {
+          deps: entry.deps,
+          execute: function() {
+            // recursively ensure that the module and all its 
+            // dependencies are linked (with dependency group handling)
+            link(load.name, entry, loader);
+
+            // now handle dependency execution in correct order
+            ensureEvaluated(load.name, entry, [], loader);
+
+            if (!entry.esModule)
+              entry.esModule = loader.newModule(entry.module.exports);
+
+            // remove from the registry
+            if (!loader.trace)
+              loader.defined[load.name] = undefined;
+
+            // return the defined module object
+            return entry.esModule;
+          }
+        };
+      });
+    };
+  });
+})();
+/*
+  System bundles
+
+  Allows a bundle module to be specified which will be dynamically 
+  loaded before trying to load a given module.
+
+  For example:
+  SystemJS.bundles['mybundle'] = ['jquery', 'bootstrap/js/bootstrap']
+
+  Will result in a load to "mybundle" whenever a load to "jquery"
+  or "bootstrap/js/bootstrap" is made.
+
+  In this way, the bundle becomes the request that provides the module
+*/
+
+(function() {
+  // bundles support (just like RequireJS)
+  // bundle name is module name of bundle itself
+  // bundle is array of modules defined by the bundle
+  // when a module in the bundle is requested, the bundle is loaded instead
+  // of the form SystemJS.bundles['mybundle'] = ['jquery', 'bootstrap/js/bootstrap']
+  hookConstructor(function(constructor) {
+    return function() {
+      constructor.call(this);
+      this.bundles = {};
+      this._loader.loadedBundles = {};
+    };
+  });
+
+  // assign bundle metadata for bundle loads
+  hook('locate', function(locate) {
+    return function(load) {
+      var loader = this;
+      var matched = false;
+
+      if (!(load.name in loader.defined))
+        for (var b in loader.bundles) {
+          for (var i = 0; i < loader.bundles[b].length; i++) {
+            var curModule = loader.bundles[b][i];
+
+            if (curModule == load.name) {
+              matched = true;
+              break;
+            }
+
+            // wildcard in bundles does not include / boundaries
+            if (curModule.indexOf('*') != -1) {
+              var parts = curModule.split('*');
+              if (parts.length != 2) {
+                loader.bundles[b].splice(i--, 1);
+                continue;
+              }
+              
+              if (load.name.substring(0, parts[0].length) == parts[0] &&
+                  load.name.substr(load.name.length - parts[1].length, parts[1].length) == parts[1] &&
+                  load.name.substr(parts[0].length, load.name.length - parts[1].length - parts[0].length).indexOf('/') == -1) {
+                matched = true;
+                break;
+              }
+            }
+          }
+
+          if (matched)
+            return loader['import'](b)
+            .then(function() {
+              return locate.call(loader, load);
+            });
+        }
+
+      return locate.call(loader, load);
+    };
+  });
+})();
+/*
+ * Script-only addition used for production loader
+ *
+ */
+hookConstructor(function(constructor) {
+  return function() {
+    constructor.apply(this, arguments);
+    __global.define = this.amdDefine;
+  };
+});
+
+hook('fetch', function(fetch) {
+  return function(load) {
+    load.metadata.scriptLoad = true;
+    return fetch.call(this, load);
+  };
+});System = new SystemJSLoader();
+
+__global.SystemJS = System;
+System.version = '0.19.39 Register Only';
+  if (typeof module == 'object' && module.exports && typeof exports == 'object')
+    module.exports = System;
+
+  __global.System = System;
+
+})(typeof self != 'undefined' ? self : global);
+\ No newline at end of file
diff --git a/dist/system.js b/dist/system.js
new file mode 100644
index 000000000..f6f69052e
--- /dev/null
+++ b/dist/system.js
@@ -0,0 +1,6 @@
+/*
+ * SystemJS v0.19.39
+ */
+!function(){function e(){!function(e){function t(e,r){if("string"!=typeof e)throw new TypeError("URL must be a string");var n=String(e).replace(/^\s+|\s+$/g,"").match(/^([^:\/?#]+:)?(?:\/\/(?:([^:@\/?#]*)(?::([^:@\/?#]*))?@)?(([^:\/?#]*)(?::(\d*))?))?([^?#]*)(\?[^#]*)?(#[\s\S]*)?/);if(!n)throw new RangeError("Invalid URL format");var a=n[1]||"",o=n[2]||"",i=n[3]||"",s=n[4]||"",l=n[5]||"",u=n[6]||"",d=n[7]||"",c=n[8]||"",f=n[9]||"";if(void 0!==r){var m=r instanceof t?r:new t(r),p=!a&&!s&&!o;!p||d||c||(c=m.search),p&&"/"!==d[0]&&(d=d?(!m.host&&!m.username||m.pathname?"":"/")+m.pathname.slice(0,m.pathname.lastIndexOf("/")+1)+d:m.pathname);var h=[];d.replace(/^(\.\.?(\/|$))+/,"").replace(/\/(\.(\/|$))+/g,"/").replace(/\/\.\.$/,"/../").replace(/\/?[^\/]*/g,function(e){"/.."===e?h.pop():h.push(e)}),d=h.join("").replace(/^\//,"/"===d[0]?"/":""),p&&(u=m.port,l=m.hostname,s=m.host,i=m.password,o=m.username),a||(a=m.protocol)}d=d.replace(/\\/g,"/"),this.origin=s?a+(""!==a||""!==s?"//":"")+s:"",this.href=a+(a&&s||"file:"==a?"//":"")+(""!==o?o+(""!==i?":"+i:"")+"@":"")+s+d+c+f,this.protocol=a,this.username=o,this.password=i,this.host=s,this.hostname=l,this.port=u,this.pathname=d,this.search=c,this.hash=f}e.URLPolyfill=t}("undefined"!=typeof self?self:global),function(e){function t(e,t){if(!e.originalErr)for(var r=((e.message||e)+(e.stack?"\n"+e.stack:"")).toString().split("\n"),n=[],a=0;a<r.length;a++)"undefined"!=typeof $__curScript&&r[a].indexOf($__curScript.src)!=-1||n.push(r[a]);var o="(SystemJS) "+(n?n.join("\n\t"):e.message.substr(11))+"\n\t"+t;F||(o=o.replace(D?/file:\/\/\//g:/file:\/\//g,""));var i=$?new Error(o,e.fileName,e.lineNumber):new Error(o);return i.stack=o,i.originalErr=e.originalErr||e,i}function r(){}function n(t){this._loader={loaderObj:this,loads:[],modules:{},importPromises:{},moduleRecords:{}},q(this,"global",{get:function(){return e}})}function a(){n.call(this),this.paths={},this._loader.paths={},V.call(this)}function o(){}function i(e,t){a.prototype[e]=t(a.prototype[e]||function(){})}function s(e){V=e(V||function(){})}function l(e){return e.match(Y)}function u(e){return"."==e[0]&&(!e[1]||"/"==e[1]||"."==e[1])||"/"==e[0]}function d(e){return!u(e)&&!l(e)}function c(e,t){if("."==e[0]){if("/"==e[1]&&"."!=e[2])return(t&&t.substr(0,t.lastIndexOf("/")+1)||J)+e.substr(2)}else if("/"!=e[0]&&e.indexOf(":")==-1)return(t&&t.substr(0,t.lastIndexOf("/")+1)||J)+e;return new H(e,t&&t.replace(/#/g,"%05")||K).href.replace(/%05/g,"#")}function f(e,t){var r,n="",a=0,o=e.paths,i=e._loader.paths;for(var s in o)if(!o.hasOwnProperty||o.hasOwnProperty(s)){var 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+\ No newline at end of file
diff --git a/dist/system.src.js b/dist/system.src.js
new file mode 100644
index 000000000..3734388df
--- /dev/null
+++ b/dist/system.src.js
@@ -0,0 +1,5153 @@
+/*
+ * SystemJS v0.19.39
+ */
+(function() {
+function bootstrap() {// from https://gist.github.com/Yaffle/1088850
+(function(global) {
+function URLPolyfill(url, baseURL) {
+  if (typeof url != 'string')
+    throw new TypeError('URL must be a string');
+  var m = String(url).replace(/^\s+|\s+$/g, "").match(/^([^:\/?#]+:)?(?:\/\/(?:([^:@\/?#]*)(?::([^:@\/?#]*))?@)?(([^:\/?#]*)(?::(\d*))?))?([^?#]*)(\?[^#]*)?(#[\s\S]*)?/);
+  if (!m)
+    throw new RangeError('Invalid URL format');
+  var protocol = m[1] || "";
+  var username = m[2] || "";
+  var password = m[3] || "";
+  var host = m[4] || "";
+  var hostname = m[5] || "";
+  var port = m[6] || "";
+  var pathname = m[7] || "";
+  var search = m[8] || "";
+  var hash = m[9] || "";
+  if (baseURL !== undefined) {
+    var base = baseURL instanceof URLPolyfill ? baseURL : new URLPolyfill(baseURL);
+    var flag = !protocol && !host && !username;
+    if (flag && !pathname && !search)
+      search = base.search;
+    if (flag && pathname[0] !== "/")
+      pathname = (pathname ? (((base.host || base.username) && !base.pathname ? "/" : "") + base.pathname.slice(0, base.pathname.lastIndexOf("/") + 1) + pathname) : base.pathname);
+    // dot segments removal
+    var output = [];
+    pathname.replace(/^(\.\.?(\/|$))+/, "")
+      .replace(/\/(\.(\/|$))+/g, "/")
+      .replace(/\/\.\.$/, "/../")
+      .replace(/\/?[^\/]*/g, function (p) {
+        if (p === "/..")
+          output.pop();
+        else
+          output.push(p);
+      });
+    pathname = output.join("").replace(/^\//, pathname[0] === "/" ? "/" : "");
+    if (flag) {
+      port = base.port;
+      hostname = base.hostname;
+      host = base.host;
+      password = base.password;
+      username = base.username;
+    }
+    if (!protocol)
+      protocol = base.protocol;
+  }
+
+  // convert URLs to use / always
+  pathname = pathname.replace(/\\/g, '/');
+
+  this.origin = host ? protocol + (protocol !== "" || host !== "" ? "//" : "") + host : "";
+  this.href = protocol + (protocol && host || protocol == "file:" ? "//" : "") + (username !== "" ? username + (password !== "" ? ":" + password : "") + "@" : "") + host + pathname + search + hash;
+  this.protocol = protocol;
+  this.username = username;
+  this.password = password;
+  this.host = host;
+  this.hostname = hostname;
+  this.port = port;
+  this.pathname = pathname;
+  this.search = search;
+  this.hash = hash;
+}
+global.URLPolyfill = URLPolyfill;
+})(typeof self != 'undefined' ? self : global);(function(__global) {
+
+  var isWorker = typeof window == 'undefined' && typeof self != 'undefined' && typeof importScripts != 'undefined';
+  var isBrowser = typeof window != 'undefined' && typeof document != 'undefined';
+  var isWindows = typeof process != 'undefined' && typeof process.platform != 'undefined' && !!process.platform.match(/^win/);
+
+  if (!__global.console)
+    __global.console = { assert: function() {} };
+
+  // IE8 support
+  var indexOf = Array.prototype.indexOf || function(item) {
+    for (var i = 0, thisLen = this.length; i < thisLen; i++) {
+      if (this[i] === item) {
+        return i;
+      }
+    }
+    return -1;
+  };
+  
+  var defineProperty;
+  (function () {
+    try {
+      if (!!Object.defineProperty({}, 'a', {}))
+        defineProperty = Object.defineProperty;
+    }
+    catch (e) {
+      defineProperty = function(obj, prop, opt) {
+        try {
+          obj[prop] = opt.value || opt.get.call(obj);
+        }
+        catch(e) {}
+      }
+    }
+  })();
+
+  var errArgs = new Error(0, '_').fileName == '_';
+
+  function addToError(err, msg) {
+    // parse the stack removing loader code lines for simplification
+    if (!err.originalErr) {
+      var stack = ((err.message || err) + (err.stack ? '\n' + err.stack : '')).toString().split('\n');
+      var newStack = [];
+      for (var i = 0; i < stack.length; i++) {
+        if (typeof $__curScript == 'undefined' || stack[i].indexOf($__curScript.src) == -1)
+          newStack.push(stack[i]);
+      }
+    }
+
+    var newMsg = '(SystemJS) ' + (newStack ? newStack.join('\n\t') : err.message.substr(11)) + '\n\t' + msg;
+
+    // Convert file:/// URLs to paths in Node
+    if (!isBrowser)
+      newMsg = newMsg.replace(isWindows ? /file:\/\/\//g : /file:\/\//g, '');
+
+    var newErr = errArgs ? new Error(newMsg, err.fileName, err.lineNumber) : new Error(newMsg);
+    
+    newErr.stack = newMsg;
+        
+    // track the original error
+    newErr.originalErr = err.originalErr || err;
+
+    return newErr;
+  }
+
+  function __eval(source, debugName, context) {
+    try {
+      new Function(source).call(context);
+    }
+    catch(e) {
+      throw addToError(e, 'Evaluating ' + debugName);
+    }
+  }
+
+  var baseURI;
+
+  // environent baseURI detection
+  if (typeof document != 'undefined' && document.getElementsByTagName) {
+    baseURI = document.baseURI;
+
+    if (!baseURI) {
+      var bases = document.getElementsByTagName('base');
+      baseURI = bases[0] && bases[0].href || window.location.href;
+    }
+  }
+  else if (typeof location != 'undefined') {
+    baseURI = __global.location.href;
+  }
+
+  // sanitize out the hash and querystring
+  if (baseURI) {
+    baseURI = baseURI.split('#')[0].split('?')[0];
+    baseURI = baseURI.substr(0, baseURI.lastIndexOf('/') + 1);
+  }
+  else if (typeof process != 'undefined' && process.cwd) {
+    baseURI = 'file://' + (isWindows ? '/' : '') + process.cwd() + '/';
+    if (isWindows)
+      baseURI = baseURI.replace(/\\/g, '/');
+  }
+  else {
+    throw new TypeError('No environment baseURI');
+  }
+
+  try {
+    var nativeURL = new __global.URL('test:///').protocol == 'test:';
+  }
+  catch(e) {}
+
+  var URL = nativeURL ? __global.URL : __global.URLPolyfill;
+
+/*
+*********************************************************************************************
+
+  Dynamic Module Loader Polyfill
+
+    - Implemented exactly to the former 2014-08-24 ES6 Specification Draft Rev 27, Section 15
+      http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts#august_24_2014_draft_rev_27
+
+    - Functions are commented with their spec numbers, with spec differences commented.
+
+    - Spec bugs are commented in this code with links.
+
+    - Abstract functions have been combined where possible, and their associated functions
+      commented.
+
+    - Realm implementation is entirely omitted.
+
+*********************************************************************************************
+*/
+
+function Module() {}
+// http://www.ecma-international.org/ecma-262/6.0/#sec-@@tostringtag
+defineProperty(Module.prototype, 'toString', {
+  value: function() {
+    return 'Module';
+  }
+});
+function Loader(options) {
+  this._loader = {
+    loaderObj: this,
+    loads: [],
+    modules: {},
+    importPromises: {},
+    moduleRecords: {}
+  };
+
+  // 26.3.3.6
+  defineProperty(this, 'global', {
+    get: function() {
+      return __global;
+    }
+  });
+
+  // 26.3.3.13 realm not implemented
+}
+
+(function() {
+
+// Some Helpers
+
+// logs a linkset snapshot for debugging
+/* function snapshot(loader) {
+  console.log('---Snapshot---');
+  for (var i = 0; i < loader.loads.length; i++) {
+    var load = loader.loads[i];
+    var linkSetLog = '  ' + load.name + ' (' + load.status + '): ';
+
+    for (var j = 0; j < load.linkSets.length; j++) {
+      linkSetLog += '{' + logloads(load.linkSets[j].loads) + '} ';
+    }
+    console.log(linkSetLog);
+  }
+  console.log('');
+}
+function logloads(loads) {
+  var log = '';
+  for (var k = 0; k < loads.length; k++)
+    log += loads[k].name + (k != loads.length - 1 ? ' ' : '');
+  return log;
+} */
+
+
+/* function checkInvariants() {
+  // see https://bugs.ecmascript.org/show_bug.cgi?id=2603#c1
+
+  var loads = System._loader.loads;
+  var linkSets = [];
+
+  for (var i = 0; i < loads.length; i++) {
+    var load = loads[i];
+    console.assert(load.status == 'loading' || load.status == 'loaded', 'Each load is loading or loaded');
+
+    for (var j = 0; j < load.linkSets.length; j++) {
+      var linkSet = load.linkSets[j];
+
+      for (var k = 0; k < linkSet.loads.length; k++)
+        console.assert(loads.indexOf(linkSet.loads[k]) != -1, 'linkSet loads are a subset of loader loads');
+
+      if (linkSets.indexOf(linkSet) == -1)
+        linkSets.push(linkSet);
+    }
+  }
+
+  for (var i = 0; i < loads.length; i++) {
+    var load = loads[i];
+    for (var j = 0; j < linkSets.length; j++) {
+      var linkSet = linkSets[j];
+
+      if (linkSet.loads.indexOf(load) != -1)
+        console.assert(load.linkSets.indexOf(linkSet) != -1, 'linkSet contains load -> load contains linkSet');
+
+      if (load.linkSets.indexOf(linkSet) != -1)
+        console.assert(linkSet.loads.indexOf(load) != -1, 'load contains linkSet -> linkSet contains load');
+    }
+  }
+
+  for (var i = 0; i < linkSets.length; i++) {
+    var linkSet = linkSets[i];
+    for (var j = 0; j < linkSet.loads.length; j++) {
+      var load = linkSet.loads[j];
+
+      for (var k = 0; k < load.dependencies.length; k++) {
+        var depName = load.dependencies[k].value;
+        var depLoad;
+        for (var l = 0; l < loads.length; l++) {
+          if (loads[l].name != depName)
+            continue;
+          depLoad = loads[l];
+          break;
+        }
+
+        // loading records are allowed not to have their dependencies yet
+        // if (load.status != 'loading')
+        //  console.assert(depLoad, 'depLoad found');
+
+        // console.assert(linkSet.loads.indexOf(depLoad) != -1, 'linkset contains all dependencies');
+      }
+    }
+  }
+} */
+
+  // 15.2.3 - Runtime Semantics: Loader State
+
+  // 15.2.3.11
+  function createLoaderLoad(object) {
+    return {
+      // modules is an object for ES5 implementation
+      modules: {},
+      loads: [],
+      loaderObj: object
+    };
+  }
+
+  // 15.2.3.2 Load Records and LoadRequest Objects
+
+  var anonCnt = 0;
+
+  // 15.2.3.2.1
+  function createLoad(name) {
+    return {
+      status: 'loading',
+      name: name || '<Anonymous' + ++anonCnt + '>',
+      linkSets: [],
+      dependencies: [],
+      metadata: {}
+    };
+  }
+
+  // 15.2.3.2.2 createLoadRequestObject, absorbed into calling functions
+
+  // 15.2.4
+
+  // 15.2.4.1
+  function loadModule(loader, name, options) {
+    return new Promise(asyncStartLoadPartwayThrough({
+      step: options.address ? 'fetch' : 'locate',
+      loader: loader,
+      moduleName: name,
+      // allow metadata for import https://bugs.ecmascript.org/show_bug.cgi?id=3091
+      moduleMetadata: options && options.metadata || {},
+      moduleSource: options.source,
+      moduleAddress: options.address
+    }));
+  }
+
+  // 15.2.4.2
+  function requestLoad(loader, request, refererName, refererAddress) {
+    // 15.2.4.2.1 CallNormalize
+    return new Promise(function(resolve, reject) {
+      resolve(loader.loaderObj.normalize(request, refererName, refererAddress));
+    })
+    // 15.2.4.2.2 GetOrCreateLoad
+    .then(function(name) {
+      var load;
+      if (loader.modules[name]) {
+        load = createLoad(name);
+        load.status = 'linked';
+        // https://bugs.ecmascript.org/show_bug.cgi?id=2795
+        load.module = loader.modules[name];
+        return load;
+      }
+
+      for (var i = 0, l = loader.loads.length; i < l; i++) {
+        load = loader.loads[i];
+        if (load.name != name)
+          continue;
+        return load;
+      }
+
+      load = createLoad(name);
+      loader.loads.push(load);
+
+      proceedToLocate(loader, load);
+
+      return load;
+    });
+  }
+
+  // 15.2.4.3
+  function proceedToLocate(loader, load) {
+    proceedToFetch(loader, load,
+      Promise.resolve()
+      // 15.2.4.3.1 CallLocate
+      .then(function() {
+        return loader.loaderObj.locate({ name: load.name, metadata: load.metadata });
+      })
+    );
+  }
+
+  // 15.2.4.4
+  function proceedToFetch(loader, load, p) {
+    proceedToTranslate(loader, load,
+      p
+      // 15.2.4.4.1 CallFetch
+      .then(function(address) {
+        // adjusted, see https://bugs.ecmascript.org/show_bug.cgi?id=2602
+        if (load.status != 'loading')
+          return;
+        load.address = address;
+
+        return loader.loaderObj.fetch({ name: load.name, metadata: load.metadata, address: address });
+      })
+    );
+  }
+
+  // 15.2.4.5
+  function proceedToTranslate(loader, load, p) {
+    p
+    // 15.2.4.5.1 CallTranslate
+    .then(function(source) {
+      if (load.status != 'loading')
+        return;
+
+      load.address = load.address || load.name;
+
+      return Promise.resolve(loader.loaderObj.translate({ name: load.name, metadata: load.metadata, address: load.address, source: source }))
+
+      // 15.2.4.5.2 CallInstantiate
+      .then(function(source) {
+        load.source = source;
+        return loader.loaderObj.instantiate({ name: load.name, metadata: load.metadata, address: load.address, source: source });
+      })
+
+      // 15.2.4.5.3 InstantiateSucceeded
+      .then(function(instantiateResult) {
+        if (instantiateResult === undefined)
+          throw new TypeError('Declarative modules unsupported in the polyfill.');
+        
+        if (typeof instantiateResult != 'object')
+          throw new TypeError('Invalid instantiate return value');
+
+        load.depsList = instantiateResult.deps || [];
+        load.execute = instantiateResult.execute;
+      })
+      // 15.2.4.6 ProcessLoadDependencies
+      .then(function() {
+        load.dependencies = [];
+        var depsList = load.depsList;
+
+        var loadPromises = [];
+        for (var i = 0, l = depsList.length; i < l; i++) (function(request, index) {
+          loadPromises.push(
+            requestLoad(loader, request, load.name, load.address)
+
+            // 15.2.4.6.1 AddDependencyLoad (load is parentLoad)
+            .then(function(depLoad) {
+
+              // adjusted from spec to maintain dependency order
+              // this is due to the System.register internal implementation needs
+              load.dependencies[index] = {
+                key: request,
+                value: depLoad.name
+              };
+
+              if (depLoad.status != 'linked') {
+                var linkSets = load.linkSets.concat([]);
+                for (var i = 0, l = linkSets.length; i < l; i++)
+                  addLoadToLinkSet(linkSets[i], depLoad);
+              }
+
+              // console.log('AddDependencyLoad ' + depLoad.name + ' for ' + load.name);
+              // snapshot(loader);
+            })
+          );
+        })(depsList[i], i);
+
+        return Promise.all(loadPromises);
+      })
+
+      // 15.2.4.6.2 LoadSucceeded
+      .then(function() {
+        // console.log('LoadSucceeded ' + load.name);
+        // snapshot(loader);
+
+        load.status = 'loaded';
+
+        var linkSets = load.linkSets.concat([]);
+        for (var i = 0, l = linkSets.length; i < l; i++)
+          updateLinkSetOnLoad(linkSets[i], load);
+      });
+    })
+    // 15.2.4.5.4 LoadFailed
+    ['catch'](function(exc) {
+      load.status = 'failed';
+      load.exception = exc;
+
+      var linkSets = load.linkSets.concat([]);
+      for (var i = 0, l = linkSets.length; i < l; i++) {
+        linkSetFailed(linkSets[i], load, exc);
+      }
+
+      console.assert(load.linkSets.length == 0, 'linkSets not removed');
+    });
+  }
+
+  // 15.2.4.7 PromiseOfStartLoadPartwayThrough absorbed into calling functions
+
+  // 15.2.4.7.1
+  function asyncStartLoadPartwayThrough(stepState) {
+    return function(resolve, reject) {
+      var loader = stepState.loader;
+      var name = stepState.moduleName;
+      var step = stepState.step;
+
+      if (loader.modules[name])
+        throw new TypeError('"' + name + '" already exists in the module table');
+
+      // adjusted to pick up existing loads
+      var existingLoad;
+      for (var i = 0, l = loader.loads.length; i < l; i++) {
+        if (loader.loads[i].name == name) {
+          existingLoad = loader.loads[i];
+
+          if (step == 'translate' && !existingLoad.source) {
+            existingLoad.address = stepState.moduleAddress;
+            proceedToTranslate(loader, existingLoad, Promise.resolve(stepState.moduleSource));
+          }
+
+          // a primary load -> use that existing linkset if it is for the direct load here
+          // otherwise create a new linkset unit
+          if (existingLoad.linkSets.length && existingLoad.linkSets[0].loads[0].name == existingLoad.name)
+            return existingLoad.linkSets[0].done.then(function() {
+              resolve(existingLoad);
+            });
+        }
+      }
+
+      var load = existingLoad || createLoad(name);
+
+      load.metadata = stepState.moduleMetadata;
+
+      var linkSet = createLinkSet(loader, load);
+
+      loader.loads.push(load);
+
+      resolve(linkSet.done);
+
+      if (step == 'locate')
+        proceedToLocate(loader, load);
+
+      else if (step == 'fetch')
+        proceedToFetch(loader, load, Promise.resolve(stepState.moduleAddress));
+
+      else {
+        console.assert(step == 'translate', 'translate step');
+        load.address = stepState.moduleAddress;
+        proceedToTranslate(loader, load, Promise.resolve(stepState.moduleSource));
+      }
+    }
+  }
+
+  // Declarative linking functions run through alternative implementation:
+  // 15.2.5.1.1 CreateModuleLinkageRecord not implemented
+  // 15.2.5.1.2 LookupExport not implemented
+  // 15.2.5.1.3 LookupModuleDependency not implemented
+
+  // 15.2.5.2.1
+  function createLinkSet(loader, startingLoad) {
+    var linkSet = {
+      loader: loader,
+      loads: [],
+      startingLoad: startingLoad, // added see spec bug https://bugs.ecmascript.org/show_bug.cgi?id=2995
+      loadingCount: 0
+    };
+    linkSet.done = new Promise(function(resolve, reject) {
+      linkSet.resolve = resolve;
+      linkSet.reject = reject;
+    });
+    addLoadToLinkSet(linkSet, startingLoad);
+    return linkSet;
+  }
+  // 15.2.5.2.2
+  function addLoadToLinkSet(linkSet, load) {
+    if (load.status == 'failed')
+      return;
+
+    for (var i = 0, l = linkSet.loads.length; i < l; i++)
+      if (linkSet.loads[i] == load)
+        return;
+
+    linkSet.loads.push(load);
+    load.linkSets.push(linkSet);
+
+    // adjustment, see https://bugs.ecmascript.org/show_bug.cgi?id=2603
+    if (load.status != 'loaded') {
+      linkSet.loadingCount++;
+    }
+
+    var loader = linkSet.loader;
+
+    for (var i = 0, l = load.dependencies.length; i < l; i++) {
+      if (!load.dependencies[i])
+        continue;
+
+      var name = load.dependencies[i].value;
+
+      if (loader.modules[name])
+        continue;
+
+      for (var j = 0, d = loader.loads.length; j < d; j++) {
+        if (loader.loads[j].name != name)
+          continue;
+
+        addLoadToLinkSet(linkSet, loader.loads[j]);
+        break;
+      }
+    }
+    // console.log('add to linkset ' + load.name);
+    // snapshot(linkSet.loader);
+  }
+
+  // linking errors can be generic or load-specific
+  // this is necessary for debugging info
+  function doLink(linkSet) {
+    var error = false;
+    try {
+      link(linkSet, function(load, exc) {
+        linkSetFailed(linkSet, load, exc);
+        error = true;
+      });
+    }
+    catch(e) {
+      linkSetFailed(linkSet, null, e);
+      error = true;
+    }
+    return error;
+  }
+
+  // 15.2.5.2.3
+  function updateLinkSetOnLoad(linkSet, load) {
+    // console.log('update linkset on load ' + load.name);
+    // snapshot(linkSet.loader);
+
+    console.assert(load.status == 'loaded' || load.status == 'linked', 'loaded or linked');
+
+    linkSet.loadingCount--;
+
+    if (linkSet.loadingCount > 0)
+      return;
+
+    // adjusted for spec bug https://bugs.ecmascript.org/show_bug.cgi?id=2995
+    var startingLoad = linkSet.startingLoad;
+
+    // non-executing link variation for loader tracing
+    // on the server. Not in spec.
+    /***/
+    if (linkSet.loader.loaderObj.execute === false) {
+      var loads = [].concat(linkSet.loads);
+      for (var i = 0, l = loads.length; i < l; i++) {
+        var load = loads[i];
+        load.module = {
+          name: load.name,
+          module: _newModule({}),
+          evaluated: true
+        };
+        load.status = 'linked';
+        finishLoad(linkSet.loader, load);
+      }
+      return linkSet.resolve(startingLoad);
+    }
+    /***/
+
+    var abrupt = doLink(linkSet);
+
+    if (abrupt)
+      return;
+
+    console.assert(linkSet.loads.length == 0, 'loads cleared');
+
+    linkSet.resolve(startingLoad);
+  }
+
+  // 15.2.5.2.4
+  function linkSetFailed(linkSet, load, exc) {
+    var loader = linkSet.loader;
+    var requests;
+
+    checkError: 
+    if (load) {
+      if (linkSet.loads[0].name == load.name) {
+        exc = addToError(exc, 'Error loading ' + load.name);
+      }
+      else {
+        for (var i = 0; i < linkSet.loads.length; i++) {
+          var pLoad = linkSet.loads[i];
+          for (var j = 0; j < pLoad.dependencies.length; j++) {
+            var dep = pLoad.dependencies[j];
+            if (dep.value == load.name) {
+              exc = addToError(exc, 'Error loading ' + load.name + ' as "' + dep.key + '" from ' + pLoad.name);
+              break checkError;
+            }
+          }
+        }
+        exc = addToError(exc, 'Error loading ' + load.name + ' from ' + linkSet.loads[0].name);
+      }
+    }
+    else {
+      exc = addToError(exc, 'Error linking ' + linkSet.loads[0].name);
+    }
+
+
+    var loads = linkSet.loads.concat([]);
+    for (var i = 0, l = loads.length; i < l; i++) {
+      var load = loads[i];
+
+      // store all failed load records
+      loader.loaderObj.failed = loader.loaderObj.failed || [];
+      if (indexOf.call(loader.loaderObj.failed, load) == -1)
+        loader.loaderObj.failed.push(load);
+
+      var linkIndex = indexOf.call(load.linkSets, linkSet);
+      console.assert(linkIndex != -1, 'link not present');
+      load.linkSets.splice(linkIndex, 1);
+      if (load.linkSets.length == 0) {
+        var globalLoadsIndex = indexOf.call(linkSet.loader.loads, load);
+        if (globalLoadsIndex != -1)
+          linkSet.loader.loads.splice(globalLoadsIndex, 1);
+      }
+    }
+    linkSet.reject(exc);
+  }
+
+  // 15.2.5.2.5
+  function finishLoad(loader, load) {
+    // add to global trace if tracing
+    if (loader.loaderObj.trace) {
+      if (!loader.loaderObj.loads)
+        loader.loaderObj.loads = {};
+      var depMap = {};
+      load.dependencies.forEach(function(dep) {
+        depMap[dep.key] = dep.value;
+      });
+      loader.loaderObj.loads[load.name] = {
+        name: load.name,
+        deps: load.dependencies.map(function(dep){ return dep.key }),
+        depMap: depMap,
+        address: load.address,
+        metadata: load.metadata,
+        source: load.source
+      };
+    }
+    // if not anonymous, add to the module table
+    if (load.name) {
+      console.assert(!loader.modules[load.name] || loader.modules[load.name].module === load.module.module, 'load not in module table');
+      loader.modules[load.name] = load.module;
+    }
+    var loadIndex = indexOf.call(loader.loads, load);
+    if (loadIndex != -1)
+      loader.loads.splice(loadIndex, 1);
+    for (var i = 0, l = load.linkSets.length; i < l; i++) {
+      loadIndex = indexOf.call(load.linkSets[i].loads, load);
+      if (loadIndex != -1)
+        load.linkSets[i].loads.splice(loadIndex, 1);
+    }
+    load.linkSets.splice(0, load.linkSets.length);
+  }
+
+  function doDynamicExecute(linkSet, load, linkError) {
+    try {
+      var module = load.execute();
+    }
+    catch(e) {
+      linkError(load, e);
+      return;
+    }
+    if (!module || !(module instanceof Module))
+      linkError(load, new TypeError('Execution must define a Module instance'));
+    else
+      return module;
+  }
+
+  // 26.3 Loader
+
+  // 26.3.1.1
+  // defined at top
+
+  // importPromises adds ability to import a module twice without error - https://bugs.ecmascript.org/show_bug.cgi?id=2601
+  function createImportPromise(loader, name, promise) {
+    var importPromises = loader._loader.importPromises;
+    return importPromises[name] = promise.then(function(m) {
+      importPromises[name] = undefined;
+      return m;
+    }, function(e) {
+      importPromises[name] = undefined;
+      throw e;
+    });
+  }
+
+  Loader.prototype = {
+    // 26.3.3.1
+    constructor: Loader,
+    // 26.3.3.2
+    define: function(name, source, options) {
+      // check if already defined
+      if (this._loader.importPromises[name])
+        throw new TypeError('Module is already loading.');
+      return createImportPromise(this, name, new Promise(asyncStartLoadPartwayThrough({
+        step: 'translate',
+        loader: this._loader,
+        moduleName: name,
+        moduleMetadata: options && options.metadata || {},
+        moduleSource: source,
+        moduleAddress: options && options.address
+      })));
+    },
+    // 26.3.3.3
+    'delete': function(name) {
+      var loader = this._loader;
+      delete loader.importPromises[name];
+      delete loader.moduleRecords[name];
+      return loader.modules[name] ? delete loader.modules[name] : false;
+    },
+    // 26.3.3.4 entries not implemented
+    // 26.3.3.5
+    get: function(key) {
+      if (!this._loader.modules[key])
+        return;
+      return this._loader.modules[key].module;
+    },
+    // 26.3.3.7
+    has: function(name) {
+      return !!this._loader.modules[name];
+    },
+    // 26.3.3.8
+    'import': function(name, parentName, parentAddress) {
+      if (typeof parentName == 'object')
+        parentName = parentName.name;
+
+      // run normalize first
+      var loaderObj = this;
+
+      // added, see https://bugs.ecmascript.org/show_bug.cgi?id=2659
+      return Promise.resolve(loaderObj.normalize(name, parentName))
+      .then(function(name) {
+        var loader = loaderObj._loader;
+
+        if (loader.modules[name])
+          return loader.modules[name].module;
+
+        return loader.importPromises[name] || createImportPromise(loaderObj, name,
+          loadModule(loader, name, {})
+          .then(function(load) {
+            delete loader.importPromises[name];
+            return load.module.module;
+          }));
+      });
+    },
+    // 26.3.3.9 keys not implemented
+    // 26.3.3.10
+    load: function(name) {
+      var loader = this._loader;
+      if (loader.modules[name])
+        return Promise.resolve();
+      return loader.importPromises[name] || createImportPromise(this, name, new Promise(asyncStartLoadPartwayThrough({
+        step: 'locate',
+        loader: loader,
+        moduleName: name,
+        moduleMetadata: {},
+        moduleSource: undefined,
+        moduleAddress: undefined
+      }))
+      .then(function() {
+        delete loader.importPromises[name];
+      }));
+    },
+    // 26.3.3.11
+    module: function(source, options) {
+      var load = createLoad();
+      load.address = options && options.address;
+      var linkSet = createLinkSet(this._loader, load);
+      var sourcePromise = Promise.resolve(source);
+      var loader = this._loader;
+      var p = linkSet.done.then(function() {
+        return load.module.module;
+      });
+      proceedToTranslate(loader, load, sourcePromise);
+      return p;
+    },
+    // 26.3.3.12
+    newModule: function (obj) {
+      if (typeof obj != 'object')
+        throw new TypeError('Expected object');
+
+      var m = new Module();
+
+      var pNames = [];
+      if (Object.getOwnPropertyNames && obj != null)
+        pNames = Object.getOwnPropertyNames(obj);
+      else
+        for (var key in obj)
+          pNames.push(key);
+
+      for (var i = 0; i < pNames.length; i++) (function(key) {
+        defineProperty(m, key, {
+          configurable: false,
+          enumerable: true,
+          get: function () {
+            return obj[key];
+          },
+          set: function() {
+            throw new Error('Module exports cannot be changed externally.');
+          }
+        });
+      })(pNames[i]);
+
+      if (Object.freeze)
+        Object.freeze(m);
+
+      return m;
+    },
+    // 26.3.3.14
+    set: function(name, module) {
+      if (!(module instanceof Module))
+        throw new TypeError('Loader.set(' + name + ', module) must be a module');
+      this._loader.modules[name] = {
+        module: module
+      };
+    },
+    // 26.3.3.15 values not implemented
+    // 26.3.3.16 @@iterator not implemented
+    // 26.3.3.17 @@toStringTag not implemented
+
+    // 26.3.3.18.1
+    normalize: function(name, referrerName, referrerAddress) {},
+    // 26.3.3.18.2
+    locate: function(load) {
+      return load.name;
+    },
+    // 26.3.3.18.3
+    fetch: function(load) {
+    },
+    // 26.3.3.18.4
+    translate: function(load) {
+      return load.source;
+    },
+    // 26.3.3.18.5
+    instantiate: function(load) {
+    }
+  };
+
+  var _newModule = Loader.prototype.newModule;
+
+/*
+ * ES6 Module Declarative Linking Code
+ */
+  function link(linkSet, linkError) {
+
+    var loader = linkSet.loader;
+
+    if (!linkSet.loads.length)
+      return;
+
+    var loads = linkSet.loads.concat([]);
+
+    for (var i = 0; i < loads.length; i++) {
+      var load = loads[i];
+
+      var module = doDynamicExecute(linkSet, load, linkError);
+      if (!module)
+        return;
+      load.module = {
+        name: load.name,
+        module: module
+      };
+      load.status = 'linked';
+
+      finishLoad(loader, load);
+    }
+  }
+
+})();
+
+var System;
+
+  var fetchTextFromURL;
+  if (typeof XMLHttpRequest != 'undefined') {
+    fetchTextFromURL = function(url, authorization, fulfill, reject) {
+      var xhr = new XMLHttpRequest();
+      var sameDomain = true;
+      var doTimeout = false;
+      if (!('withCredentials' in xhr)) {
+        // check if same domain
+        var domainCheck = /^(\w+:)?\/\/([^\/]+)/.exec(url);
+        if (domainCheck) {
+          sameDomain = domainCheck[2] === window.location.host;
+          if (domainCheck[1])
+            sameDomain &= domainCheck[1] === window.location.protocol;
+        }
+      }
+      if (!sameDomain && typeof XDomainRequest != 'undefined') {
+        xhr = new XDomainRequest();
+        xhr.onload = load;
+        xhr.onerror = error;
+        xhr.ontimeout = error;
+        xhr.onprogress = function() {};
+        xhr.timeout = 0;
+        doTimeout = true;
+      }
+      function load() {
+        fulfill(xhr.responseText);
+      }
+      function error() {
+        reject(new Error('XHR error' + (xhr.status ? ' (' + xhr.status + (xhr.statusText ? ' ' + xhr.statusText  : '') + ')' : '') + ' loading ' + url));
+      }
+
+      xhr.onreadystatechange = function () {
+        if (xhr.readyState === 4) {
+          // in Chrome on file:/// URLs, status is 0
+          if (xhr.status == 0) {
+            if (xhr.responseText) {
+              load();
+            }
+            else {
+              // when responseText is empty, wait for load or error event
+              // to inform if it is a 404 or empty file
+              xhr.addEventListener('error', error);
+              xhr.addEventListener('load', load);
+            }
+          }
+          else if (xhr.status === 200) {
+            load();
+          }
+          else {
+            error();
+          }
+        }
+      };
+      xhr.open("GET", url, true);
+
+      if (xhr.setRequestHeader) {
+        xhr.setRequestHeader('Accept', 'application/x-es-module, */*');
+        // can set "authorization: true" to enable withCredentials only
+        if (authorization) {
+          if (typeof authorization == 'string')
+            xhr.setRequestHeader('Authorization', authorization);
+          xhr.withCredentials = true;
+        }
+      }
+
+      if (doTimeout) {
+        setTimeout(function() {
+          xhr.send();
+        }, 0);
+      } else {
+        xhr.send(null);
+      }
+    };
+  }
+  else if (typeof require != 'undefined' && typeof process != 'undefined') {
+    var fs;
+    fetchTextFromURL = function(url, authorization, fulfill, reject) {
+      if (url.substr(0, 8) != 'file:///')
+        throw new Error('Unable to fetch "' + url + '". Only file URLs of the form file:/// allowed running in Node.');
+      fs = fs || require('fs');
+      if (isWindows)
+        url = url.replace(/\//g, '\\').substr(8);
+      else
+        url = url.substr(7);
+      return fs.readFile(url, function(err, data) {
+        if (err) {
+          return reject(err);
+        }
+        else {
+          // Strip Byte Order Mark out if it's the leading char
+          var dataString = data + '';
+          if (dataString[0] === '\ufeff')
+            dataString = dataString.substr(1);
+
+          fulfill(dataString);
+        }
+      });
+    };
+  }
+  else if (typeof self != 'undefined' && typeof self.fetch != 'undefined') {
+    fetchTextFromURL = function(url, authorization, fulfill, reject) {
+      var opts = {
+        headers: {'Accept': 'application/x-es-module, */*'}
+      };
+
+      if (authorization) {
+        if (typeof authorization == 'string')
+          opts.headers['Authorization'] = authorization;
+        opts.credentials = 'include';
+      }
+
+      fetch(url, opts)
+        .then(function (r) {
+          if (r.ok) {
+            return r.text();
+          } else {
+            throw new Error('Fetch error: ' + r.status + ' ' + r.statusText);
+          }
+        })
+        .then(fulfill, reject);
+    }
+  }
+  else {
+    throw new TypeError('No environment fetch API available.');
+  }
+/*
+ * Traceur, Babel and TypeScript transpile hook for Loader
+ */
+var transpile = (function() {
+
+  // use Traceur by default
+  Loader.prototype.transpiler = 'traceur';
+
+  function transpile(load) {
+    var self = this;
+
+    return Promise.resolve(__global[self.transpiler == 'typescript' ? 'ts' : self.transpiler]
+        || (self.pluginLoader || self)['import'](self.transpiler))
+    .then(function(transpiler) {
+      if (transpiler.__useDefault)
+        transpiler = transpiler['default'];
+
+      var transpileFunction;
+      if (transpiler.Compiler)
+        transpileFunction = traceurTranspile;
+      else if (transpiler.createLanguageService)
+        transpileFunction = typescriptTranspile;
+      else
+        transpileFunction = babelTranspile;
+
+      // note __moduleName will be part of the transformer meta in future when we have the spec for this
+      return '(function(__moduleName){' + transpileFunction.call(self, load, transpiler) + '\n})("' + load.name + '");\n//# sourceURL=' + load.address + '!transpiled';
+    });
+  };
+
+  function traceurTranspile(load, traceur) {
+    var options = this.traceurOptions || {};
+    options.modules = 'instantiate';
+    options.script = false;
+    if (options.sourceMaps === undefined)
+      options.sourceMaps = 'inline';
+    options.filename = load.address;
+    options.inputSourceMap = load.metadata.sourceMap;
+    options.moduleName = false;
+
+    var compiler = new traceur.Compiler(options);
+
+    return doTraceurCompile(load.source, compiler, options.filename);
+  }
+  function doTraceurCompile(source, compiler, filename) {
+    try {
+      return compiler.compile(source, filename);
+    }
+    catch(e) {
+      // on older versions of traceur (<0.9.3), an array of errors is thrown
+      // rather than a single error.
+      if (e.length) {
+        throw e[0];
+      }
+      throw e;
+    }
+  }
+
+  function babelTranspile(load, babel) {
+    var options = this.babelOptions || {};
+    options.modules = 'system';
+    if (options.sourceMap === undefined)
+      options.sourceMap = 'inline';
+    options.inputSourceMap = load.metadata.sourceMap;
+    options.filename = load.address;
+    options.code = true;
+    options.ast = false;
+
+    return babel.transform(load.source, options).code;
+  }
+
+  function typescriptTranspile(load, ts) {
+    var options = this.typescriptOptions || {};
+    options.target = options.target || ts.ScriptTarget.ES5;
+    if (options.sourceMap === undefined)
+      options.sourceMap = true;
+    if (options.sourceMap && options.inlineSourceMap !== false)
+      options.inlineSourceMap = true;
+
+    options.module = ts.ModuleKind.System;
+
+    return ts.transpile(load.source, options, load.address);
+  }
+
+  return transpile;
+})();
+// SystemJS Loader Class and Extension helpers
+function SystemJSLoader() {
+  Loader.call(this);
+
+  this.paths = {};
+  this._loader.paths = {};
+
+  systemJSConstructor.call(this);
+}
+
+// inline Object.create-style class extension
+function SystemProto() {};
+SystemProto.prototype = Loader.prototype;
+SystemJSLoader.prototype = new SystemProto();
+SystemJSLoader.prototype.constructor = SystemJSLoader;
+
+var systemJSConstructor;
+
+function hook(name, hook) {
+  SystemJSLoader.prototype[name] = hook(SystemJSLoader.prototype[name] || function() {});
+}
+function hookConstructor(hook) {
+  systemJSConstructor = hook(systemJSConstructor || function() {});
+}
+
+
+var absURLRegEx = /^[^\/]+:\/\//;
+function isAbsolute(name) {
+  return name.match(absURLRegEx);
+}
+function isRel(name) {
+  return (name[0] == '.' && (!name[1] || name[1] == '/' || name[1] == '.')) || name[0] == '/';
+}
+function isPlain(name) {
+  return !isRel(name) && !isAbsolute(name);
+}
+
+var baseURIObj = new URL(baseURI);
+
+function urlResolve(name, parent) {
+  // url resolution shortpaths
+  if (name[0] == '.') {
+    // dot-relative url normalization
+    if (name[1] == '/' && name[2] != '.')
+      return (parent && parent.substr(0, parent.lastIndexOf('/') + 1) || baseURI) + name.substr(2);
+  }
+  else if (name[0] != '/' && name.indexOf(':') == -1) {
+    // plain parent normalization
+    return (parent && parent.substr(0, parent.lastIndexOf('/') + 1) || baseURI) + name;
+  }
+
+  return new URL(name, parent && parent.replace(/#/g, '%05') || baseURIObj).href.replace(/%05/g, '#');
+}
+
+// NB no specification provided for System.paths, used ideas discussed in https://github.com/jorendorff/js-loaders/issues/25
+function applyPaths(loader, name) {
+  // most specific (most number of slashes in path) match wins
+  var pathMatch = '', wildcard, maxWildcardPrefixLen = 0;
+
+  var paths = loader.paths;
+  var pathsCache = loader._loader.paths;
+
+  // check to see if we have a paths entry
+  for (var p in paths) {
+    if (paths.hasOwnProperty && !paths.hasOwnProperty(p))
+      continue;
+
+    // paths sanitization
+    var path = paths[p];
+    if (path !== pathsCache[p])
+      path = paths[p] = pathsCache[p] = urlResolve(paths[p], isRel(paths[p]) ? baseURI : loader.baseURL);
+
+    // exact path match
+    if (p.indexOf('*') === -1) {
+      if (name == p)
+        return paths[p];
+      
+      // support trailing / in paths rules
+      else if (name.substr(0, p.length - 1) == p.substr(0, p.length - 1) && (name.length < p.length || name[p.length - 1] == p[p.length - 1]) && (paths[p][paths[p].length - 1] == '/' || paths[p] == '')) {
+        return paths[p].substr(0, paths[p].length - 1) + (name.length > p.length ? (paths[p] && '/' || '') + name.substr(p.length) : '');
+      }
+    }
+    // wildcard path match
+    else {
+      var pathParts = p.split('*');
+      if (pathParts.length > 2)
+        throw new TypeError('Only one wildcard in a path is permitted');
+
+      var wildcardPrefixLen = pathParts[0].length;
+      if (wildcardPrefixLen >= maxWildcardPrefixLen &&
+          name.substr(0, pathParts[0].length) == pathParts[0] &&
+          name.substr(name.length - pathParts[1].length) == pathParts[1]) {
+            maxWildcardPrefixLen = wildcardPrefixLen;
+            pathMatch = p;
+            wildcard = name.substr(pathParts[0].length, name.length - pathParts[1].length - pathParts[0].length);
+          }
+    }
+  }
+
+  var outPath = paths[pathMatch];
+  if (typeof wildcard == 'string')
+    outPath = outPath.replace('*', wildcard);
+
+  return outPath;
+}
+
+function dedupe(deps) {
+  var newDeps = [];
+  for (var i = 0, l = deps.length; i < l; i++)
+    if (indexOf.call(newDeps, deps[i]) == -1)
+      newDeps.push(deps[i])
+  return newDeps;
+}
+
+function group(deps) {
+  var names = [];
+  var indices = [];
+  for (var i = 0, l = deps.length; i < l; i++) {
+    var index = indexOf.call(names, deps[i]);
+    if (index === -1) {
+      names.push(deps[i]);
+      indices.push([i]);
+    }
+    else {
+      indices[index].push(i);
+    }
+  }
+  return { names: names, indices: indices };
+}
+
+var getOwnPropertyDescriptor = true;
+try {
+  Object.getOwnPropertyDescriptor({ a: 0 }, 'a');
+}
+catch(e) {
+  getOwnPropertyDescriptor = false;
+}
+
+// converts any module.exports object into an object ready for SystemJS.newModule
+function getESModule(exports) {
+  var esModule = {};
+  // don't trigger getters/setters in environments that support them
+  if ((typeof exports == 'object' || typeof exports == 'function') && exports !== __global) {
+      if (getOwnPropertyDescriptor) {
+        for (var p in exports) {
+          // The default property is copied to esModule later on
+          if (p === 'default')
+            continue;
+          defineOrCopyProperty(esModule, exports, p);
+        }
+      }
+      else {
+        extend(esModule, exports);
+      }
+  }
+  esModule['default'] = exports;
+  defineProperty(esModule, '__useDefault', {
+    value: true
+  });
+  return esModule;
+}
+
+function defineOrCopyProperty(targetObj, sourceObj, propName) {
+  try {
+    var d;
+    if (d = Object.getOwnPropertyDescriptor(sourceObj, propName))
+      defineProperty(targetObj, propName, d);
+  }
+  catch (ex) {
+    // Object.getOwnPropertyDescriptor threw an exception, fall back to normal set property
+    // we dont need hasOwnProperty here because getOwnPropertyDescriptor would have returned undefined above
+    targetObj[propName] = sourceObj[propName];
+    return false;
+  }
+}
+
+function extend(a, b, prepend) {
+  var hasOwnProperty = b && b.hasOwnProperty;
+  for (var p in b) {
+    if (hasOwnProperty && !b.hasOwnProperty(p))
+      continue;
+    if (!prepend || !(p in a))
+      a[p] = b[p];
+  }
+  return a;
+}
+
+// meta first-level extends where:
+// array + array appends
+// object + object extends
+// other properties replace
+function extendMeta(a, b, prepend) {
+  var hasOwnProperty = b && b.hasOwnProperty;
+  for (var p in b) {
+    if (hasOwnProperty && !b.hasOwnProperty(p))
+      continue;
+    var val = b[p];
+    if (!(p in a))
+      a[p] = val;
+    else if (val instanceof Array && a[p] instanceof Array)
+      a[p] = [].concat(prepend ? val : a[p]).concat(prepend ? a[p] : val);
+    else if (typeof val == 'object' && val !== null && typeof a[p] == 'object')
+      a[p] = extend(extend({}, a[p]), val, prepend);
+    else if (!prepend)
+      a[p] = val;
+  }
+}
+
+function extendPkgConfig(pkgCfgA, pkgCfgB, pkgName, loader, warnInvalidProperties) {
+  for (var prop in pkgCfgB) {
+    if (indexOf.call(['main', 'format', 'defaultExtension', 'basePath'], prop) != -1) {
+      pkgCfgA[prop] = pkgCfgB[prop];
+    }
+    else if (prop == 'map') {
+      extend(pkgCfgA.map = pkgCfgA.map || {}, pkgCfgB.map);
+    }
+    else if (prop == 'meta') {
+      extend(pkgCfgA.meta = pkgCfgA.meta || {}, pkgCfgB.meta);
+    }
+    else if (prop == 'depCache') {
+      for (var d in pkgCfgB.depCache) {
+        var dNormalized;
+
+        if (d.substr(0, 2) == './')
+          dNormalized = pkgName + '/' + d.substr(2);
+        else
+          dNormalized = coreResolve.call(loader, d);
+        loader.depCache[dNormalized] = (loader.depCache[dNormalized] || []).concat(pkgCfgB.depCache[d]);
+      }
+    }
+    else if (warnInvalidProperties && indexOf.call(['browserConfig', 'nodeConfig', 'devConfig', 'productionConfig'], prop) == -1 && 
+        (!pkgCfgB.hasOwnProperty || pkgCfgB.hasOwnProperty(prop))) {
+      warn.call(loader, '"' + prop + '" is not a valid package configuration option in package ' + pkgName);
+    }
+  }
+}
+
+// deeply-merge (to first level) config with any existing package config
+function setPkgConfig(loader, pkgName, cfg, prependConfig) {
+  var pkg;
+
+  // first package is config by reference for fast path, cloned after that
+  if (!loader.packages[pkgName]) {
+    pkg = loader.packages[pkgName] = cfg;
+  }
+  else {
+    var basePkg = loader.packages[pkgName];
+    pkg = loader.packages[pkgName] = {};
+
+    extendPkgConfig(pkg, prependConfig ? cfg : basePkg, pkgName, loader, prependConfig);
+    extendPkgConfig(pkg, prependConfig ? basePkg : cfg, pkgName, loader, !prependConfig);
+  }
+  
+  // main object becomes main map
+  if (typeof pkg.main == 'object') {
+    pkg.map = pkg.map || {};
+    pkg.map['./@main'] = pkg.main;
+    pkg.main['default'] = pkg.main['default'] || './';
+    pkg.main = '@main';
+  }
+
+  return pkg;
+}
+
+function warn(msg) {
+  if (this.warnings && typeof console != 'undefined' && console.warn)
+    console.warn(msg);
+}
+// we define a __exec for globally-scoped execution
+// used by module format implementations
+var __exec;
+
+(function() {
+
+  var hasBuffer = typeof Buffer != 'undefined';
+  try {
+    if (hasBuffer && new Buffer('a').toString('base64') != 'YQ==')
+      hasBuffer = false;
+  }
+  catch(e) {
+    hasBuffer = false;
+  }
+
+  var sourceMapPrefix = '\n//# sourceMappingURL=data:application/json;base64,';
+  function inlineSourceMap(sourceMapString) {
+    if (hasBuffer)
+      return sourceMapPrefix + new Buffer(sourceMapString).toString('base64');
+    else if (typeof btoa != 'undefined')
+      return sourceMapPrefix + btoa(unescape(encodeURIComponent(sourceMapString)));
+    else
+      return '';
+  }
+
+  function getSource(load, wrap) {
+    var lastLineIndex = load.source.lastIndexOf('\n');
+
+    // wrap ES formats with a System closure for System global encapsulation
+    if (load.metadata.format == 'global')
+      wrap = false;
+
+    var sourceMap = load.metadata.sourceMap;
+    if (sourceMap) {
+      if (typeof sourceMap != 'object')
+        throw new TypeError('load.metadata.sourceMap must be set to an object.');
+
+      sourceMap = JSON.stringify(sourceMap);
+    }
+
+    return (wrap ? '(function(System, SystemJS) {' : '') + load.source + (wrap ? '\n})(System, System);' : '')
+        // adds the sourceURL comment if not already present
+        + (load.source.substr(lastLineIndex, 15) != '\n//# sourceURL=' 
+          ? '\n//# sourceURL=' + load.address + (sourceMap ? '!transpiled' : '') : '')
+        // add sourceMappingURL if load.metadata.sourceMap is set
+        + (sourceMap && inlineSourceMap(sourceMap) || '');
+  }
+
+  var curLoad;
+
+  // System.register, System.registerDynamic, AMD define pipeline
+  // if currently evalling code here, immediately reduce the registered entry against the load record
+  hook('pushRegister_', function() {
+    return function(register) {
+      if (!curLoad)
+        return false;
+
+      this.reduceRegister_(curLoad, register);
+      return true;
+    };
+  });
+
+  // System clobbering protection (mostly for Traceur)
+  var curSystem;
+  var callCounter = 0;
+  function preExec(loader, load) {
+    curLoad = load;
+    if (callCounter++ == 0)
+      curSystem = __global.System;
+    __global.System = __global.SystemJS = loader; 
+  }
+  function postExec() {
+    if (--callCounter == 0)
+      __global.System = __global.SystemJS = curSystem;
+    curLoad = undefined;
+  }
+
+  var useVm;
+  var vm;
+  __exec = function(load) {
+    if (!load.source)
+      return;
+    if ((load.metadata.integrity || load.metadata.nonce) && supportsScriptExec)
+      return scriptExec.call(this, load);
+    try {
+      preExec(this, load);
+      curLoad = load;
+      // global scoped eval for node (avoids require scope leak)
+      if (!vm && this._nodeRequire) {
+        vm = this._nodeRequire('vm');
+        useVm = vm.runInThisContext("typeof System !== 'undefined' && System") === this;
+      }
+      if (useVm)
+        vm.runInThisContext(getSource(load, true), { filename: load.address + (load.metadata.sourceMap ? '!transpiled' : '') });
+      else
+        (0, eval)(getSource(load, true));
+      postExec();
+    }
+    catch(e) {
+      postExec(); 
+      throw addToError(e, 'Evaluating ' + load.address);
+    }
+  };
+
+  var supportsScriptExec = false;
+  if (isBrowser && typeof document != 'undefined' && document.getElementsByTagName) {
+    var scripts = document.getElementsByTagName('script');
+    $__curScript = scripts[scripts.length - 1];
+
+    if (!(window.chrome && window.chrome.extension || navigator.userAgent.match(/^Node\.js/)))
+      supportsScriptExec = true;
+  }
+
+  // script execution via injecting a script tag into the page
+  // this allows CSP integrity and nonce to be set for CSP environments
+  var head;
+  function scriptExec(load) {
+    if (!head)
+      head = document.head || document.body || document.documentElement;
+
+    var script = document.createElement('script');
+    script.text = getSource(load, false);
+    var onerror = window.onerror;
+    var e;
+    window.onerror = function(_e) {
+      e = addToError(_e, 'Evaluating ' + load.address);
+      if (onerror)
+        onerror.apply(this, arguments);
+    }
+    preExec(this, load);
+
+    if (load.metadata.integrity)
+      script.setAttribute('integrity', load.metadata.integrity);
+    if (load.metadata.nonce)
+      script.setAttribute('nonce', load.metadata.nonce);
+
+    head.appendChild(script);
+    head.removeChild(script);
+    postExec();
+    window.onerror = onerror;
+    if (e)
+      throw e;
+  }
+
+})();
+function readMemberExpression(p, value) {
+  var pParts = p.split('.');
+  while (pParts.length)
+    value = value[pParts.shift()];
+  return value;
+}
+
+function getMapMatch(map, name) {
+  var bestMatch, bestMatchLength = 0;
+
+  for (var p in map) {
+    if (name.substr(0, p.length) == p && (name.length == p.length || name[p.length] == '/')) {
+      var curMatchLength = p.split('/').length;
+      if (curMatchLength <= bestMatchLength)
+        continue;
+      bestMatch = p;
+      bestMatchLength = curMatchLength;
+    }
+  }
+
+  return bestMatch;
+}
+
+function prepareBaseURL(loader) {
+  // ensure baseURl is fully normalized
+  if (this._loader.baseURL !== this.baseURL) {
+    if (this.baseURL[this.baseURL.length - 1] != '/')
+      this.baseURL += '/';
+    
+    this._loader.baseURL = this.baseURL = new URL(this.baseURL, baseURIObj).href;
+  }
+}
+
+var envModule;
+function setProduction(isProduction, isBuilder) {
+  this.set('@system-env', envModule = this.newModule({
+    browser: isBrowser,
+    node: !!this._nodeRequire,
+    production: !isBuilder && isProduction,
+    dev: isBuilder || !isProduction,
+    build: isBuilder,
+    'default': true
+  }));
+}
+
+hookConstructor(function(constructor) {
+  return function() {
+    constructor.call(this);
+
+    // support baseURL
+    this.baseURL = baseURI;
+
+    // support map and paths
+    this.map = {};
+
+    // make the location of the system.js script accessible
+    if (typeof $__curScript != 'undefined')
+      this.scriptSrc = $__curScript.src;
+
+    // global behaviour flags
+    this.warnings = false;
+    this.defaultJSExtensions = false;
+    this.pluginFirst = false;
+    this.loaderErrorStack = false;
+
+    // by default load ".json" files as json
+    // leading * meta doesn't need normalization
+    // NB add this in next breaking release
+    // this.meta['*.json'] = { format: 'json' };
+
+    // support the empty module, as a concept
+    this.set('@empty', this.newModule({}));
+
+    setProduction.call(this, false, false);
+  };
+});
+
+// include the node require since we're overriding it
+if (typeof require != 'undefined' && typeof process != 'undefined' && !process.browser)
+  SystemJSLoader.prototype._nodeRequire = require;
+
+/*
+  Core SystemJS Normalization
+
+  If a name is relative, we apply URL normalization to the page
+  If a name is an absolute URL, we leave it as-is
+
+  Plain names (neither of the above) run through the map and paths
+  normalization phases.
+
+  The paths normalization phase applies last (paths extension), which
+  defines the `decanonicalize` function and normalizes everything into
+  a URL.
+ */
+
+var parentModuleContext;
+function getNodeModule(name, baseURL) {
+  if (!isPlain(name))
+    throw new Error('Node module ' + name + ' can\'t be loaded as it is not a package require.');
+
+  if (!parentModuleContext) {
+    var Module = this._nodeRequire('module');
+    var base = baseURL.substr(isWindows ? 8 : 7);
+    parentModuleContext = new Module(base);
+    parentModuleContext.paths = Module._nodeModulePaths(base);
+  }
+  return parentModuleContext.require(name);
+}
+
+function coreResolve(name, parentName) {
+  // standard URL resolution
+  if (isRel(name))
+    return urlResolve(name, parentName);
+  else if (isAbsolute(name))
+    return name;
+
+  // plain names not starting with './', '://' and '/' go through custom resolution
+  var mapMatch = getMapMatch(this.map, name);
+
+  if (mapMatch) {
+    name = this.map[mapMatch] + name.substr(mapMatch.length);
+
+    if (isRel(name))
+      return urlResolve(name);
+    else if (isAbsolute(name))
+      return name;
+  }
+
+  if (this.has(name))
+    return name;
+  
+  // dynamically load node-core modules when requiring `@node/fs` for example
+  if (name.substr(0, 6) == '@node/') {
+    if (!this._nodeRequire)
+      throw new TypeError('Error loading ' + name + '. Can only load node core modules in Node.');
+    if (this.builder)
+      this.set(name, this.newModule({}));
+    else
+      this.set(name, this.newModule(getESModule(getNodeModule.call(this, name.substr(6), this.baseURL))));
+    return name;
+  }
+
+  // prepare the baseURL to ensure it is normalized
+  prepareBaseURL.call(this);
+
+  return applyPaths(this, name) || this.baseURL + name;
+}
+
+hook('normalize', function(normalize) {
+  return function(name, parentName, skipExt) {
+    var resolved = coreResolve.call(this, name, parentName);
+    if (this.defaultJSExtensions && !skipExt && resolved.substr(resolved.length - 3, 3) != '.js' && !isPlain(resolved))
+      resolved += '.js';
+    return resolved;
+  };
+});
+
+// percent encode just '#' in urls if using HTTP requests
+var httpRequest = typeof XMLHttpRequest != 'undefined';
+hook('locate', function(locate) {
+  return function(load) {
+    return Promise.resolve(locate.call(this, load))
+    .then(function(address) {
+      if (httpRequest)
+        return address.replace(/#/g, '%23');
+      return address;
+    });
+  };
+});
+
+/*
+ * Fetch with authorization
+ */
+hook('fetch', function() {
+  return function(load) {
+    return new Promise(function(resolve, reject) {
+      fetchTextFromURL(load.address, load.metadata.authorization, resolve, reject);
+    });
+  };
+});
+
+/*
+  __useDefault
+  
+  When a module object looks like:
+  newModule(
+    __useDefault: true,
+    default: 'some-module'
+  })
+
+  Then importing that module provides the 'some-module'
+  result directly instead of the full module.
+
+  Useful for eg module.exports = function() {}
+*/
+hook('import', function(systemImport) {
+  return function(name, parentName, parentAddress) {
+    if (parentName && parentName.name)
+      warn.call(this, 'SystemJS.import(name, { name: parentName }) is deprecated for SystemJS.import(name, parentName), while importing ' + name + ' from ' + parentName.name);
+    return systemImport.call(this, name, parentName, parentAddress).then(function(module) {
+      return module.__useDefault ? module['default'] : module;
+    });
+  };
+});
+
+/*
+ * Allow format: 'detect' meta to enable format detection
+ */
+hook('translate', function(systemTranslate) {
+  return function(load) {
+    if (load.metadata.format == 'detect')
+      load.metadata.format = undefined;
+    return systemTranslate.apply(this, arguments);
+  };
+});
+
+
+/*
+ * JSON format support
+ *
+ * Supports loading JSON files as a module format itself
+ *
+ * Usage:
+ *
+ * SystemJS.config({
+ *   meta: {
+ *     '*.json': { format: 'json' }
+ *   }
+ * });
+ *
+ * Module is returned as if written:
+ *
+ * export default {JSON}
+ *
+ * No named exports are provided
+ *
+ * Files ending in ".json" are treated as json automatically by SystemJS
+ */
+hook('instantiate', function(instantiate) {
+  return function(load) {
+    if (load.metadata.format == 'json' && !this.builder) {
+      var entry = load.metadata.entry = createEntry();
+      entry.deps = [];
+      entry.execute = function() {
+        try {
+          return JSON.parse(load.source);
+        }
+        catch(e) {
+          throw new Error("Invalid JSON file " + load.name);
+        }
+      };
+    }
+  };
+})
+
+/*
+ Extend config merging one deep only
+
+  loader.config({
+    some: 'random',
+    config: 'here',
+    deep: {
+      config: { too: 'too' }
+    }
+  });
+
+  <=>
+
+  loader.some = 'random';
+  loader.config = 'here'
+  loader.deep = loader.deep || {};
+  loader.deep.config = { too: 'too' };
+
+
+  Normalizes meta and package configs allowing for:
+
+  SystemJS.config({
+    meta: {
+      './index.js': {}
+    }
+  });
+
+  To become
+
+  SystemJS.meta['https://thissite.com/index.js'] = {};
+
+  For easy normalization canonicalization with latest URL support.
+
+*/
+function envSet(loader, cfg, envCallback) {
+  if (envModule.browser && cfg.browserConfig)
+    envCallback(cfg.browserConfig);
+  if (envModule.node && cfg.nodeConfig)
+    envCallback(cfg.nodeConfig);
+  if (envModule.dev && cfg.devConfig)
+    envCallback(cfg.devConfig);
+  if (envModule.build && cfg.buildConfig)
+    envCallback(cfg.buildConfig);
+  if (envModule.production && cfg.productionConfig)
+    envCallback(cfg.productionConfig);
+}
+
+SystemJSLoader.prototype.getConfig = function(name) {
+  var cfg = {};
+  var loader = this;
+  for (var p in loader) {
+    if (loader.hasOwnProperty && !loader.hasOwnProperty(p) || p in SystemJSLoader.prototype && p != 'transpiler')
+      continue;
+    if (indexOf.call(['_loader', 'amdDefine', 'amdRequire', 'defined', 'failed', 'version', 'loads'], p) == -1)
+      cfg[p] = loader[p];
+  }
+  cfg.production = envModule.production;
+  return cfg;
+};
+
+var curCurScript;
+SystemJSLoader.prototype.config = function(cfg, isEnvConfig) {
+  var loader = this;
+
+  if ('loaderErrorStack' in cfg) {
+    curCurScript = $__curScript;
+    if (cfg.loaderErrorStack)
+      $__curScript = undefined;
+    else
+      $__curScript = curCurScript;
+  }
+
+  if ('warnings' in cfg)
+    loader.warnings = cfg.warnings;
+
+  // transpiler deprecation path
+  if (cfg.transpilerRuntime === false)
+    loader._loader.loadedTranspilerRuntime = true;
+
+  if ('production' in cfg || 'build' in cfg)
+    setProduction.call(loader, !!cfg.production, !!(cfg.build || envModule && envModule.build));
+
+  if (!isEnvConfig) {
+    // if using nodeConfig / browserConfig / productionConfig, take baseURL from there
+    // these exceptions will be unnecessary when we can properly implement config queuings
+    var baseURL;
+    envSet(loader, cfg, function(cfg) {
+      baseURL = baseURL || cfg.baseURL;
+    });
+    baseURL = baseURL || cfg.baseURL;
+
+    // always configure baseURL first
+    if (baseURL) {
+      var hasConfig = false;
+      function checkHasConfig(obj) {
+        for (var p in obj)
+          if (obj.hasOwnProperty(p))
+            return true;
+      }
+      if (checkHasConfig(loader.packages) || checkHasConfig(loader.meta) || checkHasConfig(loader.depCache) || checkHasConfig(loader.bundles) || checkHasConfig(loader.packageConfigPaths))
+        throw new TypeError('Incorrect configuration order. The baseURL must be configured with the first SystemJS.config call.');
+
+      this.baseURL = baseURL;
+      prepareBaseURL.call(this);
+    }
+
+    if (cfg.paths)
+      extend(loader.paths, cfg.paths);
+
+    envSet(loader, cfg, function(cfg) {
+      if (cfg.paths)
+        extend(loader.paths, cfg.paths);
+    });
+
+    // warn on wildcard path deprecations
+    if (this.warnings) {
+      for (var p in loader.paths)
+        if (p.indexOf('*') != -1)
+          warn.call(loader, 'Paths configuration "' + p + '" -> "' + loader.paths[p] + '" uses wildcards which are being deprecated for simpler trailing "/" folder paths.');
+    }
+  }
+
+  if (cfg.defaultJSExtensions) {
+    loader.defaultJSExtensions = cfg.defaultJSExtensions;
+    warn.call(loader, 'The defaultJSExtensions configuration option is deprecated, use packages configuration instead.');
+  }
+
+  if (cfg.pluginFirst)
+    loader.pluginFirst = cfg.pluginFirst;
+
+  if (cfg.map) {
+    var objMaps = '';
+    for (var p in cfg.map) {
+      var v = cfg.map[p];
+
+      // object map backwards-compat into packages configuration
+      if (typeof v !== 'string') {
+        objMaps += (objMaps.length ? ', ' : '') + '"' + p + '"';
+
+        var defaultJSExtension = loader.defaultJSExtensions && p.substr(p.length - 3, 3) != '.js';
+        var prop = loader.decanonicalize(p);
+        if (defaultJSExtension && prop.substr(prop.length - 3, 3) == '.js')
+          prop = prop.substr(0, prop.length - 3);
+
+        // if a package main, revert it
+        var pkgMatch = '';
+        for (var pkg in loader.packages) {
+          if (prop.substr(0, pkg.length) == pkg 
+              && (!prop[pkg.length] || prop[pkg.length] == '/') 
+              && pkgMatch.split('/').length < pkg.split('/').length)
+            pkgMatch = pkg;
+        }
+        if (pkgMatch && loader.packages[pkgMatch].main)
+          prop = prop.substr(0, prop.length - loader.packages[pkgMatch].main.length - 1);
+
+        var pkg = loader.packages[prop] = loader.packages[prop] || {};
+        pkg.map = v;
+      }
+      else {
+        loader.map[p] = v;
+      }
+    }
+    if (objMaps)
+      warn.call(loader, 'The map configuration for ' + objMaps + ' uses object submaps, which is deprecated in global map.\nUpdate this to use package contextual map with configs like SystemJS.config({ packages: { "' + p + '": { map: {...} } } }).');
+  }
+
+  if (cfg.packageConfigPaths) {
+    var packageConfigPaths = [];
+    for (var i = 0; i < cfg.packageConfigPaths.length; i++) {
+      var path = cfg.packageConfigPaths[i];
+      var packageLength = Math.max(path.lastIndexOf('*') + 1, path.lastIndexOf('/'));
+      var normalized = coreResolve.call(loader, path.substr(0, packageLength));
+      packageConfigPaths[i] = normalized + path.substr(packageLength);
+    }
+    loader.packageConfigPaths = packageConfigPaths;
+  }
+
+  if (cfg.bundles) {
+    for (var p in cfg.bundles) {
+      var bundle = [];
+      for (var i = 0; i < cfg.bundles[p].length; i++) {
+        var defaultJSExtension = loader.defaultJSExtensions && cfg.bundles[p][i].substr(cfg.bundles[p][i].length - 3, 3) != '.js';
+        var normalizedBundleDep = loader.decanonicalize(cfg.bundles[p][i]);
+        if (defaultJSExtension && normalizedBundleDep.substr(normalizedBundleDep.length - 3, 3) == '.js')
+          normalizedBundleDep = normalizedBundleDep.substr(0, normalizedBundleDep.length - 3);
+        bundle.push(normalizedBundleDep);
+      }
+      loader.bundles[p] = bundle;
+    }
+  }
+
+  if (cfg.packages) {
+    for (var p in cfg.packages) {
+      if (p.match(/^([^\/]+:)?\/\/$/))
+        throw new TypeError('"' + p + '" is not a valid package name.');
+
+      var prop = coreResolve.call(loader, p);
+
+      // allow trailing slash in packages
+      if (prop[prop.length - 1] == '/')
+        prop = prop.substr(0, prop.length - 1);
+
+      setPkgConfig(loader, prop, cfg.packages[p], false);
+    }
+  }
+
+  for (var c in cfg) {
+    var v = cfg[c];
+
+    if (indexOf.call(['baseURL', 'map', 'packages', 'bundles', 'paths', 'warnings', 'packageConfigPaths', 
+          'loaderErrorStack', 'browserConfig', 'nodeConfig', 'devConfig', 'buildConfig', 'productionConfig'], c) != -1)
+      continue;
+
+    if (typeof v != 'object' || v instanceof Array) {
+      loader[c] = v;
+    }
+    else {
+      loader[c] = loader[c] || {};
+
+      for (var p in v) {
+        // base-level wildcard meta does not normalize to retain catch-all quality
+        if (c == 'meta' && p[0] == '*') {
+          extend(loader[c][p] = loader[c][p] || {}, v[p]);
+        }
+        else if (c == 'meta') {
+          // meta can go through global map, with defaultJSExtensions adding
+          var resolved = coreResolve.call(loader, p);
+          if (loader.defaultJSExtensions && resolved.substr(resolved.length - 3, 3) != '.js' && !isPlain(resolved))
+            resolved += '.js';
+          extend(loader[c][resolved] = loader[c][resolved] || {}, v[p]);
+        }
+        else if (c == 'depCache') {
+          var defaultJSExtension = loader.defaultJSExtensions && p.substr(p.length - 3, 3) != '.js';
+          var prop = loader.decanonicalize(p);
+          if (defaultJSExtension && prop.substr(prop.length - 3, 3) == '.js')
+            prop = prop.substr(0, prop.length - 3);
+          loader[c][prop] = [].concat(v[p]);
+        }
+        else {
+          loader[c][p] = v[p];
+        }
+      }
+    }
+  }
+
+  envSet(loader, cfg, function(cfg) {
+    loader.config(cfg, true);
+  });
+};/*
+ * Package Configuration Extension
+ *
+ * Example:
+ *
+ * SystemJS.packages = {
+ *   jquery: {
+ *     main: 'index.js', // when not set, package name is requested directly
+ *     format: 'amd',
+ *     defaultExtension: 'ts', // defaults to 'js', can be set to false
+ *     modules: {
+ *       '*.ts': {
+ *         loader: 'typescript'
+ *       },
+ *       'vendor/sizzle.js': {
+ *         format: 'global'
+ *       }
+ *     },
+ *     map: {
+ *        // map internal require('sizzle') to local require('./vendor/sizzle')
+ *        sizzle: './vendor/sizzle.js',
+ *        // map any internal or external require of 'jquery/vendor/another' to 'another/index.js'
+ *        './vendor/another.js': './another/index.js',
+ *        // test.js / test -> lib/test.js
+ *        './test.js': './lib/test.js',
+ *
+ *        // environment-specific map configurations
+ *        './index.js': {
+ *          '~browser': './index-node.js',
+ *          './custom-condition.js|~export': './index-custom.js'
+ *        }
+ *     },
+ *     // allows for setting package-prefixed depCache
+ *     // keys are normalized module names relative to the package itself
+ *     depCache: {
+ *       // import 'package/index.js' loads in parallel package/lib/test.js,package/vendor/sizzle.js
+ *       './index.js': ['./test'],
+ *       './test.js': ['external-dep'],
+ *       'external-dep/path.js': ['./another.js']
+ *     }
+ *   }
+ * };
+ *
+ * Then:
+ *   import 'jquery'                       -> jquery/index.js
+ *   import 'jquery/submodule'             -> jquery/submodule.js
+ *   import 'jquery/submodule.ts'          -> jquery/submodule.ts loaded as typescript
+ *   import 'jquery/vendor/another'        -> another/index.js
+ *
+ * Detailed Behaviours
+ * - main can have a leading "./" can be added optionally
+ * - map and defaultExtension are applied to the main
+ * - defaultExtension adds the extension only if the exact extension is not present
+ * - defaultJSExtensions applies after map when defaultExtension is not set
+ * - if a meta value is available for a module, map and defaultExtension are skipped
+ * - like global map, package map also applies to subpaths (sizzle/x, ./vendor/another/sub)
+ * - condition module map is '@env' module in package or '@system-env' globally
+ * - map targets support conditional interpolation ('./x': './x.#{|env}.js')
+ * - internal package map targets cannot use boolean conditionals
+ *
+ * Package Configuration Loading
+ *
+ * Not all packages may already have their configuration present in the System config
+ * For these cases, a list of packageConfigPaths can be provided, which when matched against
+ * a request, will first request a ".json" file by the package name to derive the package
+ * configuration from. This allows dynamic loading of non-predetermined code, a key use
+ * case in SystemJS.
+ *
+ * Example:
+ *
+ *   SystemJS.packageConfigPaths = ['packages/test/package.json', 'packages/*.json'];
+ *
+ *   // will first request 'packages/new-package/package.json' for the package config
+ *   // before completing the package request to 'packages/new-package/path'
+ *   SystemJS.import('packages/new-package/path');
+ *
+ *   // will first request 'packages/test/package.json' before the main
+ *   SystemJS.import('packages/test');
+ *
+ * When a package matches packageConfigPaths, it will always send a config request for
+ * the package configuration.
+ * The package name itself is taken to be the match up to and including the last wildcard
+ * or trailing slash.
+ * The most specific package config path will be used.
+ * Any existing package configurations for the package will deeply merge with the
+ * package config, with the existing package configurations taking preference.
+ * To opt-out of the package configuration request for a package that matches
+ * packageConfigPaths, use the { configured: true } package config option.
+ *
+ */
+(function() {
+
+  hookConstructor(function(constructor) {
+    return function() {
+      constructor.call(this);
+      this.packages = {};
+      this.packageConfigPaths = [];
+    };
+  });
+
+  function getPackage(loader, normalized) {
+    // use most specific package
+    var curPkg, curPkgLen = 0, pkgLen;
+    for (var p in loader.packages) {
+      if (normalized.substr(0, p.length) === p && (normalized.length === p.length || normalized[p.length] === '/')) {
+        pkgLen = p.split('/').length;
+        if (pkgLen > curPkgLen) {
+          curPkg = p;
+          curPkgLen = pkgLen;
+        }
+      }
+    }
+    return curPkg;
+  }
+
+  function addDefaultExtension(loader, pkg, pkgName, subPath, skipExtensions) {
+    // don't apply extensions to folders or if defaultExtension = false
+    if (!subPath || subPath[subPath.length - 1] == '/' || skipExtensions || pkg.defaultExtension === false)
+      return subPath;
+
+    var metaMatch = false;
+
+    // exact meta or meta with any content after the last wildcard skips extension
+    if (pkg.meta)
+      getMetaMatches(pkg.meta, subPath, function(metaPattern, matchMeta, matchDepth) {
+        if (matchDepth == 0 || metaPattern.lastIndexOf('*') != metaPattern.length - 1)
+          return metaMatch = true;
+      });
+
+    // exact global meta or meta with any content after the last wildcard skips extension
+    if (!metaMatch && loader.meta)
+      getMetaMatches(loader.meta, pkgName + '/' + subPath, function(metaPattern, matchMeta, matchDepth) {
+        if (matchDepth == 0 || metaPattern.lastIndexOf('*') != metaPattern.length - 1)
+          return metaMatch = true;
+      });
+
+    if (metaMatch)
+      return subPath;
+
+    // work out what the defaultExtension is and add if not there already
+    // NB reconsider if default should really be ".js"?
+    var defaultExtension = '.' + (pkg.defaultExtension || 'js');
+    if (subPath.substr(subPath.length - defaultExtension.length) != defaultExtension)
+      return subPath + defaultExtension;
+    else
+      return subPath;
+  }
+
+  function applyPackageConfigSync(loader, pkg, pkgName, subPath, skipExtensions) {
+    // main
+    if (!subPath) {
+      if (pkg.main)
+        subPath = pkg.main.substr(0, 2) == './' ? pkg.main.substr(2) : pkg.main;
+      // also no submap if name is package itself (import 'pkg' -> 'path/to/pkg.js')
+      else
+        // NB can add a default package main convention here when defaultJSExtensions is deprecated
+        // if it becomes internal to the package then it would no longer be an exit path
+        return pkgName + (loader.defaultJSExtensions ? '.js' : '');
+    }
+
+    // map config checking without then with extensions
+    if (pkg.map) {
+      var mapPath = './' + subPath;
+
+      var mapMatch = getMapMatch(pkg.map, mapPath);
+
+      // we then check map with the default extension adding
+      if (!mapMatch) {
+        mapPath = './' + addDefaultExtension(loader, pkg, pkgName, subPath, skipExtensions);
+        if (mapPath != './' + subPath)
+          mapMatch = getMapMatch(pkg.map, mapPath);
+      }
+      if (mapMatch) {
+        var mapped = doMapSync(loader, pkg, pkgName, mapMatch, mapPath, skipExtensions);
+        if (mapped)
+          return mapped;
+      }
+    }
+
+    // normal package resolution
+    return pkgName + '/' + addDefaultExtension(loader, pkg, pkgName, subPath, skipExtensions);
+  }
+
+  function validMapping(mapMatch, mapped, pkgName, path) {
+    // disallow internal to subpath maps
+    if (mapMatch == '.')
+      throw new Error('Package ' + pkgName + ' has a map entry for "." which is not permitted.');
+    
+    // allow internal ./x -> ./x/y or ./x/ -> ./x/y recursive maps
+    // but only if the path is exactly ./x and not ./x/z
+    if (mapped.substr(0, mapMatch.length) == mapMatch && path.length > mapMatch.length)
+      return false;
+
+    return true;
+  }
+
+  function doMapSync(loader, pkg, pkgName, mapMatch, path, skipExtensions) {
+    if (path[path.length - 1] == '/')
+      path = path.substr(0, path.length - 1);
+    var mapped = pkg.map[mapMatch];
+
+    if (typeof mapped == 'object')
+      throw new Error('Synchronous conditional normalization not supported sync normalizing ' + mapMatch + ' in ' + pkgName);
+
+    if (!validMapping(mapMatch, mapped, pkgName, path) || typeof mapped != 'string')
+      return;
+
+    // package map to main / base-level
+    if (mapped == '.')
+      mapped = pkgName;
+
+    // internal package map
+    else if (mapped.substr(0, 2) == './')
+      return pkgName + '/' + addDefaultExtension(loader, pkg, pkgName, mapped.substr(2) + path.substr(mapMatch.length), skipExtensions);
+    
+    // external map reference
+    return loader.normalizeSync(mapped + path.substr(mapMatch.length), pkgName + '/');
+  }
+
+  function applyPackageConfig(loader, pkg, pkgName, subPath, skipExtensions) {
+    // main
+    if (!subPath) {
+      if (pkg.main)
+        subPath = pkg.main.substr(0, 2) == './' ? pkg.main.substr(2) : pkg.main;
+      // also no submap if name is package itself (import 'pkg' -> 'path/to/pkg.js')
+      else
+        // NB can add a default package main convention here when defaultJSExtensions is deprecated
+        // if it becomes internal to the package then it would no longer be an exit path
+        return Promise.resolve(pkgName + (loader.defaultJSExtensions ? '.js' : ''));
+    }
+
+    // map config checking without then with extensions
+    var mapPath, mapMatch;
+
+    if (pkg.map) {
+      mapPath = './' + subPath;
+      mapMatch = getMapMatch(pkg.map, mapPath);
+
+      // we then check map with the default extension adding
+      if (!mapMatch) {
+        mapPath = './' + addDefaultExtension(loader, pkg, pkgName, subPath, skipExtensions);
+        if (mapPath != './' + subPath)
+          mapMatch = getMapMatch(pkg.map, mapPath);
+      }
+    }
+
+    return (mapMatch ? doMap(loader, pkg, pkgName, mapMatch, mapPath, skipExtensions) : Promise.resolve())
+    .then(function(mapped) {
+      if (mapped)
+        return Promise.resolve(mapped);
+
+      // normal package resolution / fallback resolution for no conditional match
+      return Promise.resolve(pkgName + '/' + addDefaultExtension(loader, pkg, pkgName, subPath, skipExtensions));
+    });
+  }
+
+  function doStringMap(loader, pkg, pkgName, mapMatch, mapped, path, skipExtensions) {
+    // NB the interpolation cases should strictly skip subsequent interpolation
+    // package map to main / base-level
+    if (mapped == '.')
+      mapped = pkgName;
+    
+    // internal package map
+    else if (mapped.substr(0, 2) == './')
+      return Promise.resolve(pkgName + '/' + addDefaultExtension(loader, pkg, pkgName, mapped.substr(2) + path.substr(mapMatch.length), skipExtensions))
+      .then(function(name) {
+        return interpolateConditional.call(loader, name, pkgName + '/');
+      });
+    
+    // external map reference
+    return loader.normalize(mapped + path.substr(mapMatch.length), pkgName + '/');
+  }
+
+  function doMap(loader, pkg, pkgName, mapMatch, path, skipExtensions) {
+    if (path[path.length - 1] == '/')
+      path = path.substr(0, path.length - 1);
+
+    var mapped = pkg.map[mapMatch];
+
+    if (typeof mapped == 'string') {
+      if (!validMapping(mapMatch, mapped, pkgName, path))
+        return Promise.resolve();
+      return doStringMap(loader, pkg, pkgName, mapMatch, mapped, path, skipExtensions);
+    }
+
+    // we use a special conditional syntax to allow the builder to handle conditional branch points further
+    if (loader.builder)
+      return Promise.resolve(pkgName + '/#:' + path);
+
+    // we load all conditions upfront
+    var conditionPromises = [];
+    var conditions = [];
+    for (var e in mapped) {
+      var c = parseCondition(e);
+      conditions.push({
+        condition: c,
+        map: mapped[e]
+      });
+      conditionPromises.push(loader['import'](c.module, pkgName));
+    }
+
+    // map object -> conditional map
+    return Promise.all(conditionPromises)
+    .then(function(conditionValues) {
+      // first map condition to match is used
+      for (var i = 0; i < conditions.length; i++) {
+        var c = conditions[i].condition;
+        var value = readMemberExpression(c.prop, conditionValues[i]);
+        if (!c.negate && value || c.negate && !value)
+          return conditions[i].map;
+      }
+    })
+    .then(function(mapped) {
+      if (mapped) {
+        if (!validMapping(mapMatch, mapped, pkgName, path))
+          return;
+        return doStringMap(loader, pkg, pkgName, mapMatch, mapped, path, skipExtensions);
+      }
+
+      // no environment match -> fallback to original subPath by returning undefined
+    });
+  }
+
+  // normalizeSync = decanonicalize + package resolution
+  SystemJSLoader.prototype.normalizeSync = SystemJSLoader.prototype.decanonicalize = SystemJSLoader.prototype.normalize;
+
+  // decanonicalize must JUST handle package defaultExtension: false case when defaultJSExtensions is set
+  // to be deprecated!
+  hook('decanonicalize', function(decanonicalize) {
+    return function(name, parentName) {
+      if (this.builder)
+        return decanonicalize.call(this, name, parentName, true);
+
+      var decanonicalized = decanonicalize.call(this, name, parentName, false);
+
+      if (!this.defaultJSExtensions)
+        return decanonicalized;
+    
+      var pkgName = getPackage(this, decanonicalized);
+
+      var pkg = this.packages[pkgName];
+      var defaultExtension = pkg && pkg.defaultExtension;
+
+      if (defaultExtension == undefined && pkg && pkg.meta)
+        getMetaMatches(pkg.meta, decanonicalized.substr(pkgName), function(metaPattern, matchMeta, matchDepth) {
+          if (matchDepth == 0 || metaPattern.lastIndexOf('*') != metaPattern.length - 1) {
+            defaultExtension = false;
+            return true;
+          }
+        });
+      
+      if ((defaultExtension === false || defaultExtension && defaultExtension != '.js') && name.substr(name.length - 3, 3) != '.js' && decanonicalized.substr(decanonicalized.length - 3, 3) == '.js')
+        decanonicalized = decanonicalized.substr(0, decanonicalized.length - 3);
+
+      return decanonicalized;
+    };
+  });
+
+  hook('normalizeSync', function(normalizeSync) {
+    return function(name, parentName, isPlugin) {
+      var loader = this;
+      isPlugin = isPlugin === true;
+
+      // apply contextual package map first
+      // (we assume the parent package config has already been loaded)
+      if (parentName)
+        var parentPackageName = getPackage(loader, parentName) ||
+            loader.defaultJSExtensions && parentName.substr(parentName.length - 3, 3) == '.js' &&
+            getPackage(loader, parentName.substr(0, parentName.length - 3));
+
+      var parentPackage = parentPackageName && loader.packages[parentPackageName];
+
+      // ignore . since internal maps handled by standard package resolution
+      if (parentPackage && name[0] != '.') {
+        var parentMap = parentPackage.map;
+        var parentMapMatch = parentMap && getMapMatch(parentMap, name);
+
+        if (parentMapMatch && typeof parentMap[parentMapMatch] == 'string') {
+          var mapped = doMapSync(loader, parentPackage, parentPackageName, parentMapMatch, name, isPlugin);      
+          if (mapped)
+            return mapped;
+        }
+      }
+
+      var defaultJSExtension = loader.defaultJSExtensions && name.substr(name.length - 3, 3) != '.js';
+
+      // apply map, core, paths, contextual package map
+      var normalized = normalizeSync.call(loader, name, parentName, false);
+
+      // undo defaultJSExtension
+      if (defaultJSExtension && normalized.substr(normalized.length - 3, 3) != '.js')
+        defaultJSExtension = false;
+      if (defaultJSExtension)
+        normalized = normalized.substr(0, normalized.length - 3);
+
+      var pkgConfigMatch = getPackageConfigMatch(loader, normalized);
+      var pkgName = pkgConfigMatch && pkgConfigMatch.packageName || getPackage(loader, normalized);
+
+      if (!pkgName)
+        return normalized + (defaultJSExtension ? '.js' : '');
+
+      var subPath = normalized.substr(pkgName.length + 1);
+
+      return applyPackageConfigSync(loader, loader.packages[pkgName] || {}, pkgName, subPath, isPlugin);
+    };
+  });
+
+  hook('normalize', function(normalize) {
+    return function(name, parentName, isPlugin) {
+      var loader = this;
+      isPlugin = isPlugin === true;
+
+      return Promise.resolve()
+      .then(function() {
+        // apply contextual package map first
+        // (we assume the parent package config has already been loaded)
+        if (parentName)
+          var parentPackageName = getPackage(loader, parentName) ||
+              loader.defaultJSExtensions && parentName.substr(parentName.length - 3, 3) == '.js' &&
+              getPackage(loader, parentName.substr(0, parentName.length - 3));
+
+        var parentPackage = parentPackageName && loader.packages[parentPackageName];
+
+        // ignore . since internal maps handled by standard package resolution
+        if (parentPackage && name.substr(0, 2) != './') {
+          var parentMap = parentPackage.map;
+          var parentMapMatch = parentMap && getMapMatch(parentMap, name);
+
+          if (parentMapMatch)
+            return doMap(loader, parentPackage, parentPackageName, parentMapMatch, name, isPlugin);
+        }
+
+        return Promise.resolve();
+      })
+      .then(function(mapped) {
+        if (mapped)
+          return mapped;
+
+        var defaultJSExtension = loader.defaultJSExtensions && name.substr(name.length - 3, 3) != '.js';
+
+        // apply map, core, paths, contextual package map
+        var normalized = normalize.call(loader, name, parentName, false);
+
+        // undo defaultJSExtension
+        if (defaultJSExtension && normalized.substr(normalized.length - 3, 3) != '.js')
+          defaultJSExtension = false;
+        if (defaultJSExtension)
+          normalized = normalized.substr(0, normalized.length - 3);
+
+        var pkgConfigMatch = getPackageConfigMatch(loader, normalized);
+        var pkgName = pkgConfigMatch && pkgConfigMatch.packageName || getPackage(loader, normalized);
+
+        if (!pkgName)
+          return Promise.resolve(normalized + (defaultJSExtension ? '.js' : ''));
+
+        var pkg = loader.packages[pkgName];
+
+        // if package is already configured or not a dynamic config package, use existing package config
+        var isConfigured = pkg && (pkg.configured || !pkgConfigMatch);
+        return (isConfigured ? Promise.resolve(pkg) : loadPackageConfigPath(loader, pkgName, pkgConfigMatch.configPath))
+        .then(function(pkg) {
+          var subPath = normalized.substr(pkgName.length + 1);
+
+          return applyPackageConfig(loader, pkg, pkgName, subPath, isPlugin);
+        });
+      });
+    };
+  });
+
+  // check if the given normalized name matches a packageConfigPath
+  // if so, loads the config
+  var packageConfigPaths = {};
+
+  // data object for quick checks against package paths
+  function createPkgConfigPathObj(path) {
+    var lastWildcard = path.lastIndexOf('*');
+    var length = Math.max(lastWildcard + 1, path.lastIndexOf('/'));
+    return {
+      length: length,
+      regEx: new RegExp('^(' + path.substr(0, length).replace(/[.+?^${}()|[\]\\]/g, '\\$&').replace(/\*/g, '[^\\/]+') + ')(\\/|$)'),
+      wildcard: lastWildcard != -1
+    };
+  }
+
+  // most specific match wins
+  function getPackageConfigMatch(loader, normalized) {
+    var pkgName, exactMatch = false, configPath;
+    for (var i = 0; i < loader.packageConfigPaths.length; i++) {
+      var packageConfigPath = loader.packageConfigPaths[i];
+      var p = packageConfigPaths[packageConfigPath] || (packageConfigPaths[packageConfigPath] = createPkgConfigPathObj(packageConfigPath));
+      if (normalized.length < p.length)
+        continue;
+      var match = normalized.match(p.regEx);
+      if (match && (!pkgName || (!(exactMatch && p.wildcard) && pkgName.length < match[1].length))) {
+        pkgName = match[1];
+        exactMatch = !p.wildcard;
+        configPath = pkgName + packageConfigPath.substr(p.length);
+      }
+    }
+
+    if (!pkgName)
+      return;
+
+    return {
+      packageName: pkgName,
+      configPath: configPath
+    };
+  }
+
+  function loadPackageConfigPath(loader, pkgName, pkgConfigPath) {
+    var configLoader = loader.pluginLoader || loader;
+
+    // NB remove this when json is default
+    (configLoader.meta[pkgConfigPath] = configLoader.meta[pkgConfigPath] || {}).format = 'json';
+    configLoader.meta[pkgConfigPath].loader = null;
+
+    return configLoader.load(pkgConfigPath)
+    .then(function() {
+      var cfg = configLoader.get(pkgConfigPath)['default'];
+
+      // support "systemjs" prefixing
+      if (cfg.systemjs)
+        cfg = cfg.systemjs;
+
+      // modules backwards compatibility
+      if (cfg.modules) {
+        cfg.meta = cfg.modules;
+        warn.call(loader, 'Package config file ' + pkgConfigPath + ' is configured with "modules", which is deprecated as it has been renamed to "meta".');
+      }
+
+      return setPkgConfig(loader, pkgName, cfg, true);
+    });
+  }
+
+  function getMetaMatches(pkgMeta, subPath, matchFn) {
+    // wildcard meta
+    var meta = {};
+    var wildcardIndex;
+    for (var module in pkgMeta) {
+      // allow meta to start with ./ for flexibility
+      var dotRel = module.substr(0, 2) == './' ? './' : '';
+      if (dotRel)
+        module = module.substr(2);
+
+      wildcardIndex = module.indexOf('*');
+      if (wildcardIndex === -1)
+        continue;
+
+      if (module.substr(0, wildcardIndex) == subPath.substr(0, wildcardIndex)
+          && module.substr(wildcardIndex + 1) == subPath.substr(subPath.length - module.length + wildcardIndex + 1)) {
+        // alow match function to return true for an exit path
+        if (matchFn(module, pkgMeta[dotRel + module], module.split('/').length))
+          return;
+      }
+    }
+    // exact meta
+    var exactMeta = pkgMeta[subPath] && pkgMeta.hasOwnProperty && pkgMeta.hasOwnProperty(subPath) ? pkgMeta[subPath] : pkgMeta['./' + subPath];
+    if (exactMeta)
+      matchFn(exactMeta, exactMeta, 0);
+  }
+
+  hook('locate', function(locate) {
+    return function(load) {
+      var loader = this;
+      return Promise.resolve(locate.call(this, load))
+      .then(function(address) {
+        var pkgName = getPackage(loader, load.name);
+        if (pkgName) {
+          var pkg = loader.packages[pkgName];
+          var subPath = load.name.substr(pkgName.length + 1);
+
+          var meta = {};
+          if (pkg.meta) {
+            var bestDepth = 0;
+
+            // NB support a main shorthand in meta here?
+            getMetaMatches(pkg.meta, subPath, function(metaPattern, matchMeta, matchDepth) {
+              if (matchDepth > bestDepth)
+                bestDepth = matchDepth;
+              extendMeta(meta, matchMeta, matchDepth && bestDepth > matchDepth);
+            });
+
+            extendMeta(load.metadata, meta);
+          }
+
+          // format
+          if (pkg.format && !load.metadata.loader)
+            load.metadata.format = load.metadata.format || pkg.format;
+        }
+
+        return address;
+      });
+    };
+  });
+
+})();
+/*
+ * Script tag fetch
+ *
+ * When load.metadata.scriptLoad is true, we load via script tag injection.
+ */
+(function() {
+
+  if (typeof document != 'undefined')
+    var head = document.getElementsByTagName('head')[0];
+
+  var curSystem;
+  var curRequire;
+
+  // if doing worker executing, this is set to the load record being executed
+  var workerLoad = null;
+  
+  // interactive mode handling method courtesy RequireJS
+  var ieEvents = head && (function() {
+    var s = document.createElement('script');
+    var isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]';
+    return s.attachEvent && !(s.attachEvent.toString && s.attachEvent.toString().indexOf('[native code') < 0) && !isOpera;
+  })();
+
+  // IE interactive-only part
+  // we store loading scripts array as { script: <script>, load: {...} }
+  var interactiveLoadingScripts = [];
+  var interactiveScript;
+  function getInteractiveScriptLoad() {
+    if (interactiveScript && interactiveScript.script.readyState === 'interactive')
+      return interactiveScript.load;
+
+    for (var i = 0; i < interactiveLoadingScripts.length; i++)
+      if (interactiveLoadingScripts[i].script.readyState == 'interactive') {
+        interactiveScript = interactiveLoadingScripts[i];
+        return interactiveScript.load;
+      }
+  }
+  
+  // System.register, System.registerDynamic, AMD define pipeline
+  // this is called by the above methods when they execute
+  // we then run the reduceRegister_ collection function either immediately
+  // if we are in IE and know the currently executing script (interactive)
+  // or later if we need to wait for the synchronous load callback to know the script
+  var loadingCnt = 0;
+  var registerQueue = [];
+  hook('pushRegister_', function(pushRegister) {
+    return function(register) {
+      // if using eval-execution then skip
+      if (pushRegister.call(this, register))
+        return false;
+
+      // if using worker execution, then we're done
+      if (workerLoad)
+        this.reduceRegister_(workerLoad, register);
+
+      // detect if we know the currently executing load (IE)
+      // if so, immediately call reduceRegister
+      else if (ieEvents)
+        this.reduceRegister_(getInteractiveScriptLoad(), register);
+
+      // otherwise, add to our execution queue
+      // to call reduceRegister on sync script load event
+      else if (loadingCnt)
+        registerQueue.push(register);
+
+      // if we're not currently loading anything though
+      // then do the reduction against a null load
+      // (out of band named define or named register)
+      // note even in non-script environments, this catch is used
+      else
+        this.reduceRegister_(null, register);
+
+      return true;
+    };
+  });
+
+  function webWorkerImport(loader, load) {
+    return new Promise(function(resolve, reject) {
+      if (load.metadata.integrity)
+        reject(new Error('Subresource integrity checking is not supported in web workers.'));
+
+      workerLoad = load;
+      try {
+        importScripts(load.address);
+      }
+      catch(e) {
+        workerLoad = null;
+        reject(e);
+      }
+      workerLoad = null;
+
+      // if nothing registered, then something went wrong
+      if (!load.metadata.entry)
+        reject(new Error(load.address + ' did not call System.register or AMD define. If loading a global, ensure the meta format is set to global.'));
+
+      resolve('');
+    });
+  }
+
+  // override fetch to use script injection
+  hook('fetch', function(fetch) {
+    return function(load) {
+      var loader = this;
+
+      if (load.metadata.format == 'json' || !load.metadata.scriptLoad || (!isBrowser && !isWorker))
+        return fetch.call(this, load);
+
+      if (isWorker)
+        return webWorkerImport(loader, load);
+
+      return new Promise(function(resolve, reject) {
+        var s = document.createElement('script');
+        
+        s.async = true;
+
+        if (load.metadata.crossOrigin)
+          s.crossOrigin = load.metadata.crossOrigin;
+
+        if (load.metadata.integrity)
+          s.setAttribute('integrity', load.metadata.integrity);
+
+        if (ieEvents) {
+          s.attachEvent('onreadystatechange', complete);
+          interactiveLoadingScripts.push({
+            script: s,
+            load: load
+          });
+        }
+        else {
+          s.addEventListener('load', complete, false);
+          s.addEventListener('error', error, false);
+        }
+
+        loadingCnt++;
+
+        curSystem = __global.System;
+        curRequire = __global.require;
+
+        s.src = load.address;
+        head.appendChild(s);
+
+        function complete(evt) {
+          if (s.readyState && s.readyState != 'loaded' && s.readyState != 'complete')
+            return;
+
+          loadingCnt--;
+
+          // complete call is sync on execution finish
+          // (in ie already done reductions)
+          if (!load.metadata.entry && !registerQueue.length) {
+            loader.reduceRegister_(load);
+          }
+          else if (!ieEvents) {
+            for (var i = 0; i < registerQueue.length; i++)
+              loader.reduceRegister_(load, registerQueue[i]);
+            registerQueue = [];
+          }
+
+          cleanup();
+
+          // if nothing registered, then something went wrong
+          if (!load.metadata.entry && !load.metadata.bundle)
+            reject(new Error(load.name + ' did not call System.register or AMD define. If loading a global module configure the global name via the meta exports property for script injection support.'));
+
+          resolve('');
+        }
+
+        function error(evt) {
+          cleanup();
+          reject(new Error('Unable to load script ' + load.address));
+        }
+
+        function cleanup() {
+          __global.System = curSystem;
+          __global.require = curRequire;
+
+          if (s.detachEvent) {
+            s.detachEvent('onreadystatechange', complete);
+            for (var i = 0; i < interactiveLoadingScripts.length; i++)
+              if (interactiveLoadingScripts[i].script == s) {
+                if (interactiveScript && interactiveScript.script == s)
+                  interactiveScript = null;
+                interactiveLoadingScripts.splice(i, 1);
+              }
+          }
+          else {
+            s.removeEventListener('load', complete, false);
+            s.removeEventListener('error', error, false);
+          }
+
+          head.removeChild(s);
+        }
+      });
+    };
+  });
+})();
+/*
+ * Instantiate registry extension
+ *
+ * Supports Traceur System.register 'instantiate' output for loading ES6 as ES5.
+ *
+ * - Creates the loader.register function
+ * - Also supports metadata.format = 'register' in instantiate for anonymous register modules
+ * - Also supports metadata.deps, metadata.execute and metadata.executingRequire
+ *     for handling dynamic modules alongside register-transformed ES6 modules
+ *
+ *
+ * The code here replicates the ES6 linking groups algorithm to ensure that
+ * circular ES6 compiled into System.register can work alongside circular AMD 
+ * and CommonJS, identically to the actual ES6 loader.
+ *
+ */
+
+
+/*
+ * Registry side table entries in loader.defined
+ * Registry Entry Contains:
+ *    - name
+ *    - deps 
+ *    - declare for declarative modules
+ *    - execute for dynamic modules, different to declarative execute on module
+ *    - executingRequire indicates require drives execution for circularity of dynamic modules
+ *    - declarative optional boolean indicating which of the above
+ *
+ * Can preload modules directly on SystemJS.defined['my/module'] = { deps, execute, executingRequire }
+ *
+ * Then the entry gets populated with derived information during processing:
+ *    - normalizedDeps derived from deps, created in instantiate
+ *    - groupIndex used by group linking algorithm
+ *    - evaluated indicating whether evaluation has happend
+ *    - module the module record object, containing:
+ *      - exports actual module exports
+ *
+ *    For dynamic we track the es module with:
+ *    - esModule actual es module value
+ *    - esmExports whether to extend the esModule with named exports
+ *      
+ *    Then for declarative only we track dynamic bindings with the 'module' records:
+ *      - name
+ *      - exports
+ *      - setters declarative setter functions
+ *      - dependencies, module records of dependencies
+ *      - importers, module records of dependents
+ *
+ * After linked and evaluated, entries are removed, declarative module records remain in separate
+ * module binding table
+ *
+ */
+
+var leadingCommentAndMetaRegEx = /^(\s*\/\*[^\*]*(\*(?!\/)[^\*]*)*\*\/|\s*\/\/[^\n]*|\s*"[^"]+"\s*;?|\s*'[^']+'\s*;?)*\s*/;
+function detectRegisterFormat(source) {
+  var leadingCommentAndMeta = source.match(leadingCommentAndMetaRegEx);
+  return leadingCommentAndMeta && source.substr(leadingCommentAndMeta[0].length, 15) == 'System.register';
+}
+
+function createEntry() {
+  return {
+    name: null,
+    deps: null,
+    originalIndices: null,
+    declare: null,
+    execute: null,
+    executingRequire: false,
+    declarative: false,
+    normalizedDeps: null,
+    groupIndex: null,
+    evaluated: false,
+    module: null,
+    esModule: null,
+    esmExports: false
+  };
+}
+
+(function() {
+
+  /*
+   * There are two variations of System.register:
+   * 1. System.register for ES6 conversion (2-3 params) - System.register([name, ]deps, declare)
+   *    see https://github.com/ModuleLoader/es6-module-loader/wiki/System.register-Explained
+   *
+   * 2. System.registerDynamic for dynamic modules (3-4 params) - System.registerDynamic([name, ]deps, executingRequire, execute)
+   * the true or false statement 
+   *
+   * this extension implements the linking algorithm for the two variations identical to the spec
+   * allowing compiled ES6 circular references to work alongside AMD and CJS circular references.
+   *
+   */
+  SystemJSLoader.prototype.register = function(name, deps, declare) {
+    if (typeof name != 'string') {
+      declare = deps;
+      deps = name;
+      name = null;
+    }
+
+    // dynamic backwards-compatibility
+    // can be deprecated eventually
+    if (typeof declare == 'boolean')
+      return this.registerDynamic.apply(this, arguments);
+
+    var entry = createEntry();
+    // ideally wouldn't apply map config to bundle names but 
+    // dependencies go through map regardless so we can't restrict
+    // could reconsider in shift to new spec
+    entry.name = name && (this.decanonicalize || this.normalize).call(this, name);
+    entry.declarative = true;
+    entry.deps = deps;
+    entry.declare = declare;
+
+    this.pushRegister_({
+      amd: false,
+      entry: entry
+    });
+  };
+  SystemJSLoader.prototype.registerDynamic = function(name, deps, declare, execute) {
+    if (typeof name != 'string') {
+      execute = declare;
+      declare = deps;
+      deps = name;
+      name = null;
+    }
+
+    // dynamic
+    var entry = createEntry();
+    entry.name = name && (this.decanonicalize || this.normalize).call(this, name);
+    entry.deps = deps;
+    entry.execute = execute;
+    entry.executingRequire = declare;
+
+    this.pushRegister_({
+      amd: false,
+      entry: entry
+    });
+  };
+  hook('reduceRegister_', function() {
+    return function(load, register) {
+      if (!register)
+        return;
+
+      var entry = register.entry;
+      var curMeta = load && load.metadata;
+
+      // named register
+      if (entry.name) {
+        if (!(entry.name in this.defined))
+          this.defined[entry.name] = entry;
+
+        if (curMeta)
+          curMeta.bundle = true;
+      }
+      // anonymous register
+      if (!entry.name || load && !curMeta.entry && entry.name == load.name) {
+        if (!curMeta)
+          throw new TypeError('Invalid System.register call. Anonymous System.register calls can only be made by modules loaded by SystemJS.import and not via script tags.');
+        if (curMeta.entry) {
+          if (curMeta.format == 'register')
+            throw new Error('Multiple anonymous System.register calls in module ' + load.name + '. If loading a bundle, ensure all the System.register calls are named.');
+          else
+            throw new Error('Module ' + load.name + ' interpreted as ' + curMeta.format + ' module format, but called System.register.');
+        }
+        if (!curMeta.format)
+          curMeta.format = 'register';
+        curMeta.entry = entry;
+      }
+    };
+  });
+
+  hookConstructor(function(constructor) {
+    return function() {
+      constructor.call(this);
+
+      this.defined = {};
+      this._loader.moduleRecords = {};
+    };
+  });
+
+  function buildGroups(entry, loader, groups) {
+    groups[entry.groupIndex] = groups[entry.groupIndex] || [];
+
+    if (indexOf.call(groups[entry.groupIndex], entry) != -1)
+      return;
+
+    groups[entry.groupIndex].push(entry);
+
+    for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
+      var depName = entry.normalizedDeps[i];
+      var depEntry = loader.defined[depName];
+      
+      // not in the registry means already linked / ES6
+      if (!depEntry || depEntry.evaluated)
+        continue;
+      
+      // now we know the entry is in our unlinked linkage group
+      var depGroupIndex = entry.groupIndex + (depEntry.declarative != entry.declarative);
+
+      // the group index of an entry is always the maximum
+      if (depEntry.groupIndex === null || depEntry.groupIndex < depGroupIndex) {
+        
+        // if already in a group, remove from the old group
+        if (depEntry.groupIndex !== null) {
+          groups[depEntry.groupIndex].splice(indexOf.call(groups[depEntry.groupIndex], depEntry), 1);
+
+          // if the old group is empty, then we have a mixed depndency cycle
+          if (groups[depEntry.groupIndex].length == 0)
+            throw new Error("Mixed dependency cycle detected");
+        }
+
+        depEntry.groupIndex = depGroupIndex;
+      }
+
+      buildGroups(depEntry, loader, groups);
+    }
+  }
+
+  function link(name, startEntry, loader) {
+    // skip if already linked
+    if (startEntry.module)
+      return;
+
+    startEntry.groupIndex = 0;
+
+    var groups = [];
+
+    buildGroups(startEntry, loader, groups);
+
+    var curGroupDeclarative = !!startEntry.declarative == groups.length % 2;
+    for (var i = groups.length - 1; i >= 0; i--) {
+      var group = groups[i];
+      for (var j = 0; j < group.length; j++) {
+        var entry = group[j];
+
+        // link each group
+        if (curGroupDeclarative)
+          linkDeclarativeModule(entry, loader);
+        else
+          linkDynamicModule(entry, loader);
+      }
+      curGroupDeclarative = !curGroupDeclarative; 
+    }
+  }
+
+  // module binding records
+  function ModuleRecord() {}
+  defineProperty(ModuleRecord, 'toString', {
+    value: function() {
+      return 'Module';
+    }
+  });
+
+  function getOrCreateModuleRecord(name, moduleRecords) {
+    return moduleRecords[name] || (moduleRecords[name] = {
+      name: name,
+      dependencies: [],
+      exports: new ModuleRecord(), // start from an empty module and extend
+      importers: []
+    });
+  }
+
+  function linkDeclarativeModule(entry, loader) {
+    // only link if already not already started linking (stops at circular)
+    if (entry.module)
+      return;
+
+    var moduleRecords = loader._loader.moduleRecords;
+    var module = entry.module = getOrCreateModuleRecord(entry.name, moduleRecords);
+    var exports = entry.module.exports;
+
+    var declaration = entry.declare.call(__global, function(name, value) {
+      module.locked = true;
+
+      if (typeof name == 'object') {
+        for (var p in name)
+          exports[p] = name[p];
+      }
+      else {
+        exports[name] = value;
+      }
+
+      for (var i = 0, l = module.importers.length; i < l; i++) {
+        var importerModule = module.importers[i];
+        if (!importerModule.locked) {
+          var importerIndex = indexOf.call(importerModule.dependencies, module);
+          var setter = importerModule.setters[importerIndex];
+          if (setter)
+            setter(exports);
+        }
+      }
+
+      module.locked = false;
+      return value;
+    }, { id: entry.name });
+
+    if (typeof declaration == 'function')
+      declaration = { setters: [], execute: declaration };
+
+    // allowing undefined declaration was a mistake! To be deprecated.
+    declaration = declaration || { setters: [], execute: function() {} };
+    
+    module.setters = declaration.setters;
+    module.execute = declaration.execute;
+
+    if (!module.setters || !module.execute) {
+      throw new TypeError('Invalid System.register form for ' + entry.name);
+    }
+
+    // now link all the module dependencies
+    for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
+      var depName = entry.normalizedDeps[i];
+      var depEntry = loader.defined[depName];
+      var depModule = moduleRecords[depName];
+
+      // work out how to set depExports based on scenarios...
+      var depExports;
+
+      if (depModule) {
+        depExports = depModule.exports;
+      }
+      // dynamic, already linked in our registry
+      else if (depEntry && !depEntry.declarative) {
+        depExports = depEntry.esModule;
+      }
+      // in the loader registry
+      else if (!depEntry) {
+        depExports = loader.get(depName);
+      }
+      // we have an entry -> link
+      else {
+        linkDeclarativeModule(depEntry, loader);
+        depModule = depEntry.module;
+        depExports = depModule.exports;
+      }
+
+      // only declarative modules have dynamic bindings
+      if (depModule && depModule.importers) {
+        depModule.importers.push(module);
+        module.dependencies.push(depModule);
+      }
+      else {
+        module.dependencies.push(null);
+      }
+      
+      // run setters for all entries with the matching dependency name
+      var originalIndices = entry.originalIndices[i];
+      for (var j = 0, len = originalIndices.length; j < len; ++j) {
+        var index = originalIndices[j];
+        if (module.setters[index]) {
+          module.setters[index](depExports);
+        }
+      }
+    }
+  }
+
+  // An analog to loader.get covering execution of all three layers (real declarative, simulated declarative, simulated dynamic)
+  function getModule(name, loader) {
+    var exports;
+    var entry = loader.defined[name];
+
+    if (!entry) {
+      exports = loader.get(name);
+      if (!exports)
+        throw new Error('Unable to load dependency ' + name + '.');
+    }
+
+    else {
+      if (entry.declarative)
+        ensureEvaluated(name, entry, [], loader);
+    
+      else if (!entry.evaluated)
+        linkDynamicModule(entry, loader);
+
+      exports = entry.module.exports;
+    }
+
+    if ((!entry || entry.declarative) && exports && exports.__useDefault)
+      return exports['default'];
+    
+    return exports;
+  }
+
+  function linkDynamicModule(entry, loader) {
+    if (entry.module)
+      return;
+
+    var exports = {};
+
+    var module = entry.module = { exports: exports, id: entry.name };
+
+    // AMD requires execute the tree first
+    if (!entry.executingRequire) {
+      for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
+        var depName = entry.normalizedDeps[i];
+        // we know we only need to link dynamic due to linking algorithm
+        var depEntry = loader.defined[depName];
+        if (depEntry)
+          linkDynamicModule(depEntry, loader);
+      }
+    }
+
+    // now execute
+    entry.evaluated = true;
+    var output = entry.execute.call(__global, function(name) {
+      for (var i = 0, l = entry.deps.length; i < l; i++) {
+        if (entry.deps[i] != name)
+          continue;
+        return getModule(entry.normalizedDeps[i], loader);
+      }
+      // try and normalize the dependency to see if we have another form
+      var nameNormalized = loader.normalizeSync(name, entry.name);
+      if (indexOf.call(entry.normalizedDeps, nameNormalized) != -1)
+        return getModule(nameNormalized, loader);
+
+      throw new Error('Module ' + name + ' not declared as a dependency of ' + entry.name);
+    }, exports, module);
+    
+    if (output !== undefined)
+      module.exports = output;
+
+    // create the esModule object, which allows ES6 named imports of dynamics
+    exports = module.exports;
+
+    // __esModule flag treats as already-named
+    if (exports && (exports.__esModule || exports instanceof Module))
+      entry.esModule = loader.newModule(exports);
+    // set module as 'default' export, then fake named exports by iterating properties
+    else if (entry.esmExports && exports !== __global)
+      entry.esModule = loader.newModule(getESModule(exports));
+    // just use the 'default' export
+    else
+      entry.esModule = loader.newModule({ 'default': exports, __useDefault: true });
+  }
+
+  /*
+   * Given a module, and the list of modules for this current branch,
+   *  ensure that each of the dependencies of this module is evaluated
+   *  (unless one is a circular dependency already in the list of seen
+   *  modules, in which case we execute it)
+   *
+   * Then we evaluate the module itself depth-first left to right 
+   * execution to match ES6 modules
+   */
+  function ensureEvaluated(moduleName, entry, seen, loader) {
+    // if already seen, that means it's an already-evaluated non circular dependency
+    if (!entry || entry.evaluated || !entry.declarative)
+      return;
+
+    // this only applies to declarative modules which late-execute
+
+    seen.push(moduleName);
+
+    for (var i = 0, l = entry.normalizedDeps.length; i < l; i++) {
+      var depName = entry.normalizedDeps[i];
+      if (indexOf.call(seen, depName) == -1) {
+        if (!loader.defined[depName])
+          loader.get(depName);
+        else
+          ensureEvaluated(depName, loader.defined[depName], seen, loader);
+      }
+    }
+
+    if (entry.evaluated)
+      return;
+
+    entry.evaluated = true;
+    entry.module.execute.call(__global);
+  }
+
+  // override the delete method to also clear the register caches
+  hook('delete', function(del) {
+    return function(name) {
+      delete this._loader.moduleRecords[name];
+      delete this.defined[name];
+      return del.call(this, name);
+    };
+  });
+
+  hook('fetch', function(fetch) {
+    return function(load) {
+      if (this.defined[load.name]) {
+        load.metadata.format = 'defined';
+        return '';
+      }
+
+      load.metadata.deps = load.metadata.deps || [];
+      
+      return fetch.call(this, load);
+    };
+  });
+
+  hook('translate', function(translate) {
+    // we run the meta detection here (register is after meta)
+    return function(load) {
+      load.metadata.deps = load.metadata.deps || [];
+      return Promise.resolve(translate.apply(this, arguments)).then(function(source) {
+        // run detection for register format
+        if (load.metadata.format == 'register' || !load.metadata.format && detectRegisterFormat(load.source))
+          load.metadata.format = 'register';
+        return source;
+      });
+    };
+  });
+
+  // implement a perforance shortpath for System.load with no deps
+  hook('load', function(doLoad) {
+    return function(normalized) {
+      var loader = this;
+      var entry = loader.defined[normalized];
+
+      if (!entry || entry.deps.length)
+        return doLoad.apply(this, arguments);
+
+      entry.originalIndices = entry.normalizedDeps = [];
+
+      // recursively ensure that the module and all its 
+      // dependencies are linked (with dependency group handling)
+      link(normalized, entry, loader);
+
+      // now handle dependency execution in correct order
+      ensureEvaluated(normalized, entry, [], loader);
+      if (!entry.esModule)
+        entry.esModule = loader.newModule(entry.module.exports);
+
+      // remove from the registry
+      if (!loader.trace)
+        loader.defined[normalized] = undefined;
+
+      // return the defined module object
+      loader.set(normalized, entry.esModule);
+
+      return Promise.resolve();
+    };
+  });
+
+  hook('instantiate', function(instantiate) {
+    return function(load) {
+      if (load.metadata.format == 'detect')
+        load.metadata.format = undefined;
+
+      // assumes previous instantiate is sync
+      // (core json support)
+      instantiate.call(this, load);
+
+      var loader = this;
+
+      var entry;
+
+      // first we check if this module has already been defined in the registry
+      if (loader.defined[load.name]) {
+        entry = loader.defined[load.name];
+        // don't support deps for ES modules
+        if (!entry.declarative)
+          entry.deps = entry.deps.concat(load.metadata.deps);
+        entry.deps = entry.deps.concat(load.metadata.deps);
+      }
+
+      // picked up already by an anonymous System.register script injection
+      // or via the dynamic formats
+      else if (load.metadata.entry) {
+        entry = load.metadata.entry;
+        entry.deps = entry.deps.concat(load.metadata.deps);
+      }
+
+      // Contains System.register calls
+      // (dont run bundles in the builder)
+      else if (!(loader.builder && load.metadata.bundle) 
+          && (load.metadata.format == 'register' || load.metadata.format == 'esm' || load.metadata.format == 'es6')) {
+        
+        if (typeof __exec != 'undefined')
+          __exec.call(loader, load);
+
+        if (!load.metadata.entry && !load.metadata.bundle)
+          throw new Error(load.name + ' detected as ' + load.metadata.format + ' but didn\'t execute.');
+
+        entry = load.metadata.entry;
+
+        // support metadata deps for System.register
+        if (entry && load.metadata.deps)
+          entry.deps = entry.deps.concat(load.metadata.deps);
+      }
+
+      // named bundles are just an empty module
+      if (!entry) {
+        entry = createEntry();
+        entry.deps = load.metadata.deps;
+        entry.execute = function() {};
+      }
+
+      // place this module onto defined for circular references
+      loader.defined[load.name] = entry;
+      
+      var grouped = group(entry.deps);
+      
+      entry.deps = grouped.names;
+      entry.originalIndices = grouped.indices;
+      entry.name = load.name;
+      entry.esmExports = load.metadata.esmExports !== false;
+
+      // first, normalize all dependencies
+      var normalizePromises = [];
+      for (var i = 0, l = entry.deps.length; i < l; i++)
+        normalizePromises.push(Promise.resolve(loader.normalize(entry.deps[i], load.name)));
+
+      return Promise.all(normalizePromises).then(function(normalizedDeps) {
+
+        entry.normalizedDeps = normalizedDeps;
+
+        return {
+          deps: entry.deps,
+          execute: function() {
+            // recursively ensure that the module and all its 
+            // dependencies are linked (with dependency group handling)
+            link(load.name, entry, loader);
+
+            // now handle dependency execution in correct order
+            ensureEvaluated(load.name, entry, [], loader);
+
+            if (!entry.esModule)
+              entry.esModule = loader.newModule(entry.module.exports);
+
+            // remove from the registry
+            if (!loader.trace)
+              loader.defined[load.name] = undefined;
+
+            // return the defined module object
+            return entry.esModule;
+          }
+        };
+      });
+    };
+  });
+})();
+/*
+ * Extension to detect ES6 and auto-load Traceur or Babel for processing
+ */
+(function() {
+  // good enough ES6 module detection regex - format detections not designed to be accurate, but to handle the 99% use case
+  var esmRegEx = /(^\s*|[}\);\n]\s*)(import\s*(['"]|(\*\s+as\s+)?[^"'\(\)\n;]+\s*from\s*['"]|\{)|export\s+\*\s+from\s+["']|export\s*(\{|default|function|class|var|const|let|async\s+function))/;
+
+  var traceurRuntimeRegEx = /\$traceurRuntime\s*\./;
+  var babelHelpersRegEx = /babelHelpers\s*\./;
+
+  hook('translate', function(translate) {
+    return function(load) {
+      var loader = this;
+      var args = arguments;
+      return translate.apply(loader, args)
+      .then(function(source) {
+        // detect & transpile ES6
+        if (load.metadata.format == 'esm' || load.metadata.format == 'es6' || !load.metadata.format && source.match(esmRegEx)) {
+          if (load.metadata.format == 'es6')
+            warn.call(loader, 'Module ' + load.name + ' has metadata setting its format to "es6", which is deprecated.\nThis should be updated to "esm".');
+
+          load.metadata.format = 'esm';
+
+          if (load.metadata.deps) {
+            var depInject = '';
+            for (var i = 0; i < load.metadata.deps.length; i++)
+              depInject += 'import "' + load.metadata.deps[i] + '"; ';
+            load.source = depInject + source;
+          }
+
+          if (loader.transpiler === false) {
+            // we accept translation to esm for builds though to enable eg rollup optimizations
+            if (loader.builder)
+              return source;
+            throw new TypeError('Unable to dynamically transpile ES module as SystemJS.transpiler set to false.');
+          }
+
+          // setting _loader.loadedTranspiler = false tells the next block to
+          // do checks for setting transpiler metadata
+          loader._loader.loadedTranspiler = loader._loader.loadedTranspiler || false;
+          if (loader.pluginLoader)
+            loader.pluginLoader._loader.loadedTranspiler = loader._loader.loadedTranspiler || false;
+
+          // do transpilation
+          return (loader._loader.transpilerPromise || (
+            loader._loader.transpilerPromise = Promise.resolve(
+              __global[loader.transpiler == 'typescript' ? 'ts' : loader.transpiler] || (loader.pluginLoader || loader)['import'](loader.transpiler)
+          ))).then(function(transpiler) {
+            loader._loader.loadedTranspilerRuntime = true;
+
+            // translate hooks means this is a transpiler plugin instead of a raw implementation
+            if (transpiler.translate) {
+              // if transpiler is the same as the plugin loader, then don't run twice
+              if (transpiler == load.metadata.loaderModule)
+                return load.source;
+
+              // convert the source map into an object for transpilation chaining
+              if (typeof load.metadata.sourceMap == 'string')
+                load.metadata.sourceMap = JSON.parse(load.metadata.sourceMap);
+
+              return Promise.resolve(transpiler.translate.apply(loader, args))
+              .then(function(source) {
+                // sanitize sourceMap if an object not a JSON string
+                var sourceMap = load.metadata.sourceMap;
+                if (sourceMap && typeof sourceMap == 'object') {
+                  var originalName = load.address.split('!')[0];
+                  
+                  // force set the filename of the original file
+                  if (!sourceMap.file || sourceMap.file == load.address)
+                    sourceMap.file = originalName + '!transpiled';
+
+                  // force set the sources list if only one source
+                  if (!sourceMap.sources || sourceMap.sources.length <= 1 && (!sourceMap.sources[0] || sourceMap.sources[0] == load.address))
+                    sourceMap.sources = [originalName];
+                }
+
+                if (load.metadata.format == 'esm' && !loader.builder && detectRegisterFormat(source))
+                  load.metadata.format = 'register';
+                return source;
+              });
+            }
+
+            // legacy builder support
+            if (loader.builder)
+              load.metadata.originalSource = load.source;
+            
+            // defined in es6-module-loader/src/transpile.js
+            return transpile.call(loader, load)
+            .then(function(source) {
+              // clear sourceMap as transpiler embeds it
+              load.metadata.sourceMap = undefined;
+              return source;
+            });            
+          }, function(err) {
+            throw addToError(err, 'Unable to load transpiler to transpile ' + load.name);
+          });
+        }
+
+        // skip transpiler and transpiler runtime loading when transpiler is disabled
+        if (loader.transpiler === false)
+          return source;
+
+        // load the transpiler correctly
+        if (loader._loader.loadedTranspiler === false && (loader.transpiler == 'traceur' || loader.transpiler == 'typescript' || loader.transpiler == 'babel')
+            && load.name == loader.normalizeSync(loader.transpiler)) {
+
+          // always load transpiler as a global
+          if (source.length > 100 && !load.metadata.format) {
+            load.metadata.format = 'global';
+
+            if (loader.transpiler === 'traceur')
+              load.metadata.exports = 'traceur';
+            if (loader.transpiler === 'typescript')
+              load.metadata.exports = 'ts';
+          }
+
+          loader._loader.loadedTranspiler = true;
+        }
+
+        // load the transpiler runtime correctly
+        if (loader._loader.loadedTranspilerRuntime === false) {
+          if (load.name == loader.normalizeSync('traceur-runtime')
+              || load.name == loader.normalizeSync('babel/external-helpers*')) {
+            if (source.length > 100)
+              load.metadata.format = load.metadata.format || 'global';
+
+            loader._loader.loadedTranspilerRuntime = true;
+          }
+        }
+
+        // detect transpiler runtime usage to load runtimes
+        if ((load.metadata.format == 'register' || load.metadata.bundle) && loader._loader.loadedTranspilerRuntime !== true) {
+          if (loader.transpiler == 'traceur' && !__global.$traceurRuntime && load.source.match(traceurRuntimeRegEx)) {
+            loader._loader.loadedTranspilerRuntime = loader._loader.loadedTranspilerRuntime || false;
+            return loader['import']('traceur-runtime').then(function() {
+              return source;
+            });
+          }
+          if (loader.transpiler == 'babel' && !__global.babelHelpers && load.source.match(babelHelpersRegEx)) {
+            loader._loader.loadedTranspilerRuntime = loader._loader.loadedTranspilerRuntime || false;
+            return loader['import']('babel/external-helpers').then(function() {
+              return source;
+            });
+          }
+        }
+
+        return source;
+      });
+    };
+  });
+
+})();
+/*
+  SystemJS Global Format
+
+  Supports
+    metadata.deps
+    metadata.globals
+    metadata.exports
+
+  Without metadata.exports, detects writes to the global object.
+*/
+var __globalName = typeof self != 'undefined' ? 'self' : 'global';
+
+hook('fetch', function(fetch) {
+  return function(load) {
+    if (load.metadata.exports && !load.metadata.format)
+      load.metadata.format = 'global';
+    return fetch.call(this, load);
+  };
+});
+
+// ideally we could support script loading for globals, but the issue with that is that
+// we can't do it with AMD support side-by-side since AMD support means defining the
+// global define, and global support means not definining it, yet we don't have any hook
+// into the "pre-execution" phase of a script tag being loaded to handle both cases
+hook('instantiate', function(instantiate) {
+  return function(load) {
+    var loader = this;
+
+    if (!load.metadata.format)
+      load.metadata.format = 'global';
+
+    // global is a fallback module format
+    if (load.metadata.format == 'global' && !load.metadata.entry) {
+
+      var entry = createEntry();
+
+      load.metadata.entry = entry;
+
+      entry.deps = [];
+
+      for (var g in load.metadata.globals) {
+        var gl = load.metadata.globals[g];
+        if (gl)
+          entry.deps.push(gl);
+      }
+
+      entry.execute = function(require, exports, module) {
+
+        var globals;
+        if (load.metadata.globals) {
+          globals = {};
+          for (var g in load.metadata.globals)
+            if (load.metadata.globals[g])
+              globals[g] = require(load.metadata.globals[g]);
+        }
+        
+        var exportName = load.metadata.exports;
+
+        if (exportName)
+          load.source += '\n' + __globalName + '["' + exportName + '"] = ' + exportName + ';';
+
+        var retrieveGlobal = loader.get('@@global-helpers').prepareGlobal(module.id, exportName, globals, !!load.metadata.encapsulateGlobal);
+        __exec.call(loader, load);
+
+        return retrieveGlobal();
+      }
+    }
+    return instantiate.call(this, load);
+  };
+});
+
+
+function getGlobalValue(exports) {
+  if (typeof exports == 'string')
+    return readMemberExpression(exports, __global);
+
+  if (!(exports instanceof Array))
+    throw new Error('Global exports must be a string or array.');
+
+  var globalValue = {};
+  var first = true;
+  for (var i = 0; i < exports.length; i++) {
+    var val = readMemberExpression(exports[i], __global);
+    if (first) {
+      globalValue['default'] = val;
+      first = false;
+    }
+    globalValue[exports[i].split('.').pop()] = val;
+  }
+  return globalValue;
+}
+
+hook('reduceRegister_', function(reduceRegister) {
+  return function(load, register) {
+    if (register || (!load.metadata.exports && !(isWorker && load.metadata.format == 'global')))
+      return reduceRegister.call(this, load, register);
+
+    load.metadata.format = 'global';
+    var entry = load.metadata.entry = createEntry();
+    entry.deps = load.metadata.deps;
+    var globalValue = getGlobalValue(load.metadata.exports);
+    entry.execute = function() {
+      return globalValue;
+    };
+  };
+});
+
+hookConstructor(function(constructor) {
+  return function() {
+    var loader = this;
+    constructor.call(loader);
+
+    var hasOwnProperty = Object.prototype.hasOwnProperty;
+
+    // bare minimum ignores
+    var ignoredGlobalProps = ['_g', 'sessionStorage', 'localStorage', 'clipboardData', 'frames', 'frameElement', 'external', 
+      'mozAnimationStartTime', 'webkitStorageInfo', 'webkitIndexedDB', 'mozInnerScreenY', 'mozInnerScreenX'];
+
+    var globalSnapshot;
+
+    function forEachGlobal(callback) {
+      if (Object.keys)
+        Object.keys(__global).forEach(callback);
+      else
+        for (var g in __global) {
+          if (!hasOwnProperty.call(__global, g))
+            continue;
+          callback(g);
+        }
+    }
+
+    function forEachGlobalValue(callback) {
+      forEachGlobal(function(globalName) {
+        if (indexOf.call(ignoredGlobalProps, globalName) != -1)
+          return;
+        try {
+          var value = __global[globalName];
+        }
+        catch (e) {
+          ignoredGlobalProps.push(globalName);
+        }
+        callback(globalName, value);
+      });
+    }
+
+    loader.set('@@global-helpers', loader.newModule({
+      prepareGlobal: function(moduleName, exports, globals, encapsulate) {
+        // disable module detection
+        var curDefine = __global.define;
+        
+        __global.define = undefined;
+
+        // set globals
+        var oldGlobals;
+        if (globals) {
+          oldGlobals = {};
+          for (var g in globals) {
+            oldGlobals[g] = __global[g];
+            __global[g] = globals[g];
+          }
+        }
+
+        // store a complete copy of the global object in order to detect changes
+        if (!exports) {
+          globalSnapshot = {};
+
+          forEachGlobalValue(function(name, value) {
+            globalSnapshot[name] = value;
+          });
+        }
+
+        // return function to retrieve global
+        return function() {
+          var globalValue = exports ? getGlobalValue(exports) : {};
+
+          var singleGlobal;
+          var multipleExports = !!exports;
+
+          if (!exports || encapsulate)
+            forEachGlobalValue(function(name, value) {
+              if (globalSnapshot[name] === value)
+                return;
+              if (typeof value == 'undefined')
+                return;
+              
+              // allow global encapsulation where globals are removed
+              if (encapsulate)
+                __global[name] = undefined;
+
+              if (!exports) {
+                globalValue[name] = value;
+
+                if (typeof singleGlobal != 'undefined') {
+                  if (!multipleExports && singleGlobal !== value)
+                    multipleExports = true;
+                }
+                else {
+                  singleGlobal = value;
+                }
+              }
+            });
+
+          globalValue = multipleExports ? globalValue : singleGlobal;
+
+          // revert globals
+          if (oldGlobals) {
+            for (var g in oldGlobals)
+              __global[g] = oldGlobals[g];
+          }
+          __global.define = curDefine;
+
+          return globalValue;
+        };
+      }
+    }));
+  };
+});
+/*
+  SystemJS CommonJS Format
+*/
+(function() {
+  // CJS Module Format
+  // require('...') || exports[''] = ... || exports.asd = ... || module.exports = ...
+  var cjsExportsRegEx = /(?:^\uFEFF?|[^$_a-zA-Z\xA0-\uFFFF.])(exports\s*(\[['"]|\.)|module(\.exports|\['exports'\]|\["exports"\])\s*(\[['"]|[=,\.]))/;
+  // RegEx adjusted from https://github.com/jbrantly/yabble/blob/master/lib/yabble.js#L339
+  var cjsRequireRegEx = /(?:^\uFEFF?|[^$_a-zA-Z\xA0-\uFFFF."'])require\s*\(\s*("[^"\\]*(?:\\.[^"\\]*)*"|'[^'\\]*(?:\\.[^'\\]*)*')\s*\)/g;
+  var commentRegEx = /(^|[^\\])(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg;
+
+  var stringRegEx = /("[^"\\\n\r]*(\\.[^"\\\n\r]*)*"|'[^'\\\n\r]*(\\.[^'\\\n\r]*)*')/g;
+
+  // used to support leading #!/usr/bin/env in scripts as supported in Node
+  var hashBangRegEx = /^\#\!.*/;
+
+  function getCJSDeps(source) {
+    cjsRequireRegEx.lastIndex = commentRegEx.lastIndex = stringRegEx.lastIndex = 0;
+
+    var deps = [];
+
+    var match;
+
+    // track string and comment locations for unminified source    
+    var stringLocations = [], commentLocations = [];
+
+    function inLocation(locations, match) {
+      for (var i = 0; i < locations.length; i++)
+        if (locations[i][0] < match.index && locations[i][1] > match.index)
+          return true;
+      return false;
+    }
+
+    if (source.length / source.split('\n').length < 200) {
+      while (match = stringRegEx.exec(source))
+        stringLocations.push([match.index, match.index + match[0].length]);
+
+      // TODO: track template literals here before comments
+      
+      while (match = commentRegEx.exec(source)) {
+        // only track comments not starting in strings
+        if (!inLocation(stringLocations, match))
+          commentLocations.push([match.index + match[1].length, match.index + match[0].length - 1]);
+      }
+    }
+
+    while (match = cjsRequireRegEx.exec(source)) {
+      // ensure we're not within a string or comment location
+      if (!inLocation(stringLocations, match) && !inLocation(commentLocations, match)) {
+        var dep = match[1].substr(1, match[1].length - 2);
+        // skip cases like require('" + file + "')
+        if (dep.match(/"|'/))
+          continue;
+        // trailing slash requires are removed as they don't map mains in SystemJS
+        if (dep[dep.length - 1] == '/')
+          dep = dep.substr(0, dep.length - 1);
+        deps.push(dep);
+      }
+    }
+
+    return deps;
+  }
+
+  hook('instantiate', function(instantiate) {
+    return function(load) {
+      var loader = this;
+      if (!load.metadata.format) {
+        cjsExportsRegEx.lastIndex = 0;
+        cjsRequireRegEx.lastIndex = 0;
+        if (cjsRequireRegEx.exec(load.source) || cjsExportsRegEx.exec(load.source))
+          load.metadata.format = 'cjs';
+      }
+
+      if (load.metadata.format == 'cjs') {
+        var metaDeps = load.metadata.deps;
+        var deps = load.metadata.cjsRequireDetection === false ? [] : getCJSDeps(load.source);
+
+        for (var g in load.metadata.globals)
+          if (load.metadata.globals[g])
+            deps.push(load.metadata.globals[g]);
+
+        var entry = createEntry();
+
+        load.metadata.entry = entry;
+
+        entry.deps = deps;
+        entry.executingRequire = true;
+        entry.execute = function(_require, exports, module) {
+          function require(name) {
+            if (name[name.length - 1] == '/')
+              name = name.substr(0, name.length - 1);
+            return _require.apply(this, arguments);
+          }
+          require.resolve = function(name) {
+            return loader.get('@@cjs-helpers').requireResolve(name, module.id);
+          };
+          // support module.paths ish
+          module.paths = [];
+          module.require = _require;
+
+          // ensure meta deps execute first
+          if (!load.metadata.cjsDeferDepsExecute)
+            for (var i = 0; i < metaDeps.length; i++)
+              require(metaDeps[i]);
+
+          var pathVars = loader.get('@@cjs-helpers').getPathVars(module.id);
+          var __cjsWrapper = {
+            exports: exports,
+            args: [require, exports, module, pathVars.filename, pathVars.dirname, __global, __global]
+          };
+
+          var cjsWrapper = "(function(require, exports, module, __filename, __dirname, global, GLOBAL";
+
+          // add metadata.globals to the wrapper arguments
+          if (load.metadata.globals)
+            for (var g in load.metadata.globals) {
+              __cjsWrapper.args.push(require(load.metadata.globals[g]));
+              cjsWrapper += ", " + g;
+            }
+
+          // disable AMD detection
+          var define = __global.define;
+          __global.define = undefined;
+          __global.__cjsWrapper = __cjsWrapper;
+
+          load.source = cjsWrapper + ") {" + load.source.replace(hashBangRegEx, '') + "\n}).apply(__cjsWrapper.exports, __cjsWrapper.args);";
+
+          __exec.call(loader, load);
+
+          __global.__cjsWrapper = undefined;
+          __global.define = define;
+        };
+      }
+
+      return instantiate.call(loader, load);
+    };
+  });
+})();
+hookConstructor(function(constructor) {
+  return function() {
+    var loader = this;
+    constructor.call(loader);
+
+    if (typeof window != 'undefined' && typeof document != 'undefined' && window.location)
+      var windowOrigin = location.protocol + '//' + location.hostname + (location.port ? ':' + location.port : '');
+
+    function stripOrigin(path) {
+      if (path.substr(0, 8) == 'file:///')
+        return path.substr(7 + !!isWindows);
+      
+      if (windowOrigin && path.substr(0, windowOrigin.length) == windowOrigin)
+        return path.substr(windowOrigin.length);
+
+      return path;
+    }
+
+    loader.set('@@cjs-helpers', loader.newModule({
+      requireResolve: function(request, parentId) {
+        return stripOrigin(loader.normalizeSync(request, parentId));
+      },
+      getPathVars: function(moduleId) {
+        // remove any plugin syntax
+        var pluginIndex = moduleId.lastIndexOf('!');
+        var filename;
+        if (pluginIndex != -1)
+          filename = moduleId.substr(0, pluginIndex);
+        else
+          filename = moduleId;
+
+        var dirname = filename.split('/');
+        dirname.pop();
+        dirname = dirname.join('/');
+
+        return {
+          filename: stripOrigin(filename),
+          dirname: stripOrigin(dirname)
+        };
+      }
+    }))
+  };
+});/*
+ * AMD Helper function module
+ * Separated into its own file as this is the part needed for full AMD support in SFX builds
+ * NB since implementations have now diverged this can be merged back with amd.js
+ */
+
+hook('fetch', function(fetch) {
+  return function(load) {
+    // script load implies define global leak
+    if (load.metadata.scriptLoad && isBrowser)
+      __global.define = this.amdDefine;
+    return fetch.call(this, load);
+  };
+});
+ 
+hookConstructor(function(constructor) {
+  return function() {
+    var loader = this;
+    constructor.call(this);
+
+    var commentRegEx = /(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg;
+    var cjsRequirePre = "(?:^|[^$_a-zA-Z\\xA0-\\uFFFF.])";
+    var cjsRequirePost = "\\s*\\(\\s*(\"([^\"]+)\"|'([^']+)')\\s*\\)";
+    var fnBracketRegEx = /\(([^\)]*)\)/;
+    var wsRegEx = /^\s+|\s+$/g;
+    
+    var requireRegExs = {};
+
+    function getCJSDeps(source, requireIndex) {
+
+      // remove comments
+      source = source.replace(commentRegEx, '');
+
+      // determine the require alias
+      var params = source.match(fnBracketRegEx);
+      var requireAlias = (params[1].split(',')[requireIndex] || 'require').replace(wsRegEx, '');
+
+      // find or generate the regex for this requireAlias
+      var requireRegEx = requireRegExs[requireAlias] || (requireRegExs[requireAlias] = new RegExp(cjsRequirePre + requireAlias + cjsRequirePost, 'g'));
+
+      requireRegEx.lastIndex = 0;
+
+      var deps = [];
+
+      var match;
+      while (match = requireRegEx.exec(source))
+        deps.push(match[2] || match[3]);
+
+      return deps;
+    }
+
+    /*
+      AMD-compatible require
+      To copy RequireJS, set window.require = window.requirejs = loader.amdRequire
+    */
+    function require(names, callback, errback, referer) {
+      // in amd, first arg can be a config object... we just ignore
+      if (typeof names == 'object' && !(names instanceof Array))
+        return require.apply(null, Array.prototype.splice.call(arguments, 1, arguments.length - 1));
+
+      // amd require
+      if (typeof names == 'string' && typeof callback == 'function')
+        names = [names];
+      if (names instanceof Array) {
+        var dynamicRequires = [];
+        for (var i = 0; i < names.length; i++)
+          dynamicRequires.push(loader['import'](names[i], referer));
+        Promise.all(dynamicRequires).then(function(modules) {
+          if (callback)
+            callback.apply(null, modules);
+        }, errback);
+      }
+
+      // commonjs require
+      else if (typeof names == 'string') {
+        var defaultJSExtension = loader.defaultJSExtensions && names.substr(names.length - 3, 3) != '.js';
+        var normalized = loader.decanonicalize(names, referer);
+        if (defaultJSExtension && normalized.substr(normalized.length - 3, 3) == '.js')
+          normalized = normalized.substr(0, normalized.length - 3);
+        var module = loader.get(normalized);
+        if (!module)
+          throw new Error('Module not already loaded loading "' + names + '" as ' + normalized + (referer ? ' from "' + referer + '".' : '.'));
+        return module.__useDefault ? module['default'] : module;
+      }
+
+      else
+        throw new TypeError('Invalid require');
+    }
+
+    function define(name, deps, factory) {
+      if (typeof name != 'string') {
+        factory = deps;
+        deps = name;
+        name = null;
+      }
+      if (!(deps instanceof Array)) {
+        factory = deps;
+        deps = ['require', 'exports', 'module'].splice(0, factory.length);
+      }
+
+      if (typeof factory != 'function')
+        factory = (function(factory) {
+          return function() { return factory; }
+        })(factory);
+
+      // in IE8, a trailing comma becomes a trailing undefined entry
+      if (deps[deps.length - 1] === undefined)
+        deps.pop();
+
+      // remove system dependencies
+      var requireIndex, exportsIndex, moduleIndex;
+      
+      if ((requireIndex = indexOf.call(deps, 'require')) != -1) {
+        
+        deps.splice(requireIndex, 1);
+
+        // only trace cjs requires for non-named
+        // named defines assume the trace has already been done
+        if (!name)
+          deps = deps.concat(getCJSDeps(factory.toString(), requireIndex));
+      }
+
+      if ((exportsIndex = indexOf.call(deps, 'exports')) != -1)
+        deps.splice(exportsIndex, 1);
+      
+      if ((moduleIndex = indexOf.call(deps, 'module')) != -1)
+        deps.splice(moduleIndex, 1);
+
+      function execute(req, exports, module) {
+        var depValues = [];
+        for (var i = 0; i < deps.length; i++)
+          depValues.push(req(deps[i]));
+
+        module.uri = module.id;
+
+        module.config = function() {};
+
+        // add back in system dependencies
+        if (moduleIndex != -1)
+          depValues.splice(moduleIndex, 0, module);
+        
+        if (exportsIndex != -1)
+          depValues.splice(exportsIndex, 0, exports);
+        
+        if (requireIndex != -1) {
+          function contextualRequire(names, callback, errback) {
+            if (typeof names == 'string' && typeof callback != 'function')
+              return req(names);
+            return require.call(loader, names, callback, errback, module.id);
+          }
+          contextualRequire.toUrl = function(name) {
+            // normalize without defaultJSExtensions
+            var defaultJSExtension = loader.defaultJSExtensions && name.substr(name.length - 3, 3) != '.js';
+            var url = loader.decanonicalize(name, module.id);
+            if (defaultJSExtension && url.substr(url.length - 3, 3) == '.js')
+              url = url.substr(0, url.length - 3);
+            return url;
+          };
+          depValues.splice(requireIndex, 0, contextualRequire);
+        }
+
+        // set global require to AMD require
+        var curRequire = __global.require;
+        __global.require = require;
+
+        var output = factory.apply(exportsIndex == -1 ? __global : exports, depValues);
+
+        __global.require = curRequire;
+
+        if (typeof output == 'undefined' && module)
+          output = module.exports;
+
+        if (typeof output != 'undefined')
+          return output;
+      }
+
+      var entry = createEntry();
+      entry.name = name && (loader.decanonicalize || loader.normalize).call(loader, name);
+      entry.deps = deps;
+      entry.execute = execute;
+
+      loader.pushRegister_({
+        amd: true,
+        entry: entry
+      });
+    }
+    define.amd = {};
+
+    // reduction function to attach defines to a load record
+    hook('reduceRegister_', function(reduceRegister) {
+      return function(load, register) {
+        // only handle AMD registers here
+        if (!register || !register.amd)
+          return reduceRegister.call(this, load, register);
+
+        var curMeta = load && load.metadata;
+        var entry = register.entry;
+
+        if (curMeta) {
+          if (!curMeta.format || curMeta.format == 'detect')
+            curMeta.format = 'amd';
+          else if (!entry.name && curMeta.format != 'amd')
+            throw new Error('AMD define called while executing ' + curMeta.format + ' module ' + load.name);
+        }
+
+        // anonymous define
+        if (!entry.name) {
+          if (!curMeta)
+            throw new TypeError('Unexpected anonymous AMD define.');
+
+          if (curMeta.entry && !curMeta.entry.name)
+            throw new Error('Multiple anonymous defines in module ' + load.name);
+          
+          curMeta.entry = entry;
+        }
+        // named define
+        else {
+          // if we don't have any other defines, 
+          // then let this be an anonymous define
+          // this is just to support single modules of the form:
+          // define('jquery')
+          // still loading anonymously
+          // because it is done widely enough to be useful
+          // as soon as there is more than one define, this gets removed though
+          if (curMeta) {
+            if (!curMeta.entry && !curMeta.bundle)
+              curMeta.entry = entry;
+            else if (curMeta.entry && curMeta.entry.name && curMeta.entry.name != load.name)
+              curMeta.entry = undefined;
+
+            // note this is now a bundle
+            curMeta.bundle = true;
+          }
+
+          // define the module through the register registry
+          if (!(entry.name in this.defined))
+            this.defined[entry.name] = entry;
+        }
+      };
+    });
+
+    loader.amdDefine = define;
+    loader.amdRequire = require;
+  };
+});/*
+  SystemJS AMD Format
+*/
+(function() {
+  // AMD Module Format Detection RegEx
+  // define([.., .., ..], ...)
+  // define(varName); || define(function(require, exports) {}); || define({})
+  var amdRegEx = /(?:^\uFEFF?|[^$_a-zA-Z\xA0-\uFFFF.])define\s*\(\s*("[^"]+"\s*,\s*|'[^']+'\s*,\s*)?\s*(\[(\s*(("[^"]+"|'[^']+')\s*,|\/\/.*\r?\n|\/\*(.|\s)*?\*\/))*(\s*("[^"]+"|'[^']+')\s*,?)?(\s*(\/\/.*\r?\n|\/\*(.|\s)*?\*\/))*\s*\]|function\s*|{|[_$a-zA-Z\xA0-\uFFFF][_$a-zA-Z0-9\xA0-\uFFFF]*\))/;
+
+  hook('instantiate', function(instantiate) {
+    return function(load) {
+      var loader = this;
+      
+      if (load.metadata.format == 'amd' || !load.metadata.format && load.source.match(amdRegEx)) {
+        load.metadata.format = 'amd';
+        
+        if (!loader.builder && loader.execute !== false) {
+          var curDefine = __global.define;
+          __global.define = this.amdDefine;
+
+          try {
+            __exec.call(loader, load);
+          }
+          finally {
+            __global.define = curDefine;
+          }
+
+          if (!load.metadata.entry && !load.metadata.bundle)
+            throw new TypeError('AMD module ' + load.name + ' did not define');
+        }
+        else {
+          load.metadata.execute = function() {
+            return load.metadata.builderExecute.apply(this, arguments);
+          };
+        }
+      }
+
+      return instantiate.call(loader, load);
+    };
+  });
+
+})();
+/*
+  SystemJS Loader Plugin Support
+
+  Supports plugin loader syntax with "!", or via metadata.loader
+
+  The plugin name is loaded as a module itself, and can override standard loader hooks
+  for the plugin resource. See the plugin section of the systemjs readme.
+*/
+
+(function() {
+  function getParentName(loader, parentName) {
+    // if parent is a plugin, normalize against the parent plugin argument only
+    if (parentName) {
+      var parentPluginIndex;
+      if (loader.pluginFirst) {
+        if ((parentPluginIndex = parentName.lastIndexOf('!')) != -1)
+          return parentName.substr(parentPluginIndex + 1);
+      }
+      else {
+        if ((parentPluginIndex = parentName.indexOf('!')) != -1)
+          return parentName.substr(0, parentPluginIndex);
+      }
+
+      return parentName;
+    }
+  }
+
+  function parsePlugin(loader, name) {
+    var argumentName;
+    var pluginName;
+
+    var pluginIndex = name.lastIndexOf('!');
+
+    if (pluginIndex == -1)
+      return;
+
+    if (loader.pluginFirst) {
+      argumentName = name.substr(pluginIndex + 1);
+      pluginName = name.substr(0, pluginIndex);
+    }
+    else {
+      argumentName = name.substr(0, pluginIndex);
+      pluginName = name.substr(pluginIndex + 1) || argumentName.substr(argumentName.lastIndexOf('.') + 1);
+    }
+
+    return {
+      argument: argumentName,
+      plugin: pluginName
+    };
+  }
+
+  // put name back together after parts have been normalized
+  function combinePluginParts(loader, argumentName, pluginName, defaultExtension) {
+    if (defaultExtension && argumentName.substr(argumentName.length - 3, 3) == '.js')
+      argumentName = argumentName.substr(0, argumentName.length - 3);
+
+    if (loader.pluginFirst) {
+      return pluginName + '!' + argumentName;
+    }
+    else {
+      return argumentName + '!' + pluginName;
+    }
+  }
+
+  // note if normalize will add a default js extension
+  // if so, remove for backwards compat
+  // this is strange and sucks, but will be deprecated
+  function checkDefaultExtension(loader, arg) {
+    return loader.defaultJSExtensions && arg.substr(arg.length - 3, 3) != '.js'; 
+  }
+
+  function createNormalizeSync(normalizeSync) {
+    return function(name, parentName, isPlugin) {
+      var loader = this;
+      
+      var parsed = parsePlugin(loader, name);
+      parentName = getParentName(this, parentName);
+
+      if (!parsed)
+        return normalizeSync.call(this, name, parentName, isPlugin);
+
+      // if this is a plugin, normalize the plugin name and the argument
+      var argumentName = loader.normalizeSync(parsed.argument, parentName, true);
+      var pluginName = loader.normalizeSync(parsed.plugin, parentName, true);
+      return combinePluginParts(loader, argumentName, pluginName, checkDefaultExtension(loader, parsed.argument));
+    };
+  }
+  
+  hook('decanonicalize', createNormalizeSync);
+  hook('normalizeSync', createNormalizeSync);
+
+  hook('normalize', function(normalize) {
+    return function(name, parentName, isPlugin) {
+      var loader = this;
+
+      parentName = getParentName(this, parentName);
+
+      var parsed = parsePlugin(loader, name);
+
+      if (!parsed)
+        return normalize.call(loader, name, parentName, isPlugin);
+
+      return Promise.all([
+        loader.normalize(parsed.argument, parentName, true),
+        loader.normalize(parsed.plugin, parentName, false)
+      ])
+      .then(function(normalized) {
+        return combinePluginParts(loader, normalized[0], normalized[1], checkDefaultExtension(loader, parsed.argument));
+      });
+    }
+  });
+
+  hook('locate', function(locate) {
+    return function(load) {
+      var loader = this;
+
+      var name = load.name;
+
+      // plugin syntax
+      var pluginSyntaxIndex;
+      if (loader.pluginFirst) {
+        if ((pluginSyntaxIndex = name.indexOf('!')) != -1) {
+          load.metadata.loader = name.substr(0, pluginSyntaxIndex);
+          load.name = name.substr(pluginSyntaxIndex + 1);
+        }
+      }
+      else {
+        if ((pluginSyntaxIndex = name.lastIndexOf('!')) != -1) {
+          load.metadata.loader = name.substr(pluginSyntaxIndex + 1);
+          load.name = name.substr(0, pluginSyntaxIndex);
+        }
+      }
+
+      return locate.call(loader, load)
+      .then(function(address) {
+        if (pluginSyntaxIndex != -1 || !load.metadata.loader)
+          return address;
+
+        // normalize plugin relative to parent in locate here when
+        // using plugin via loader metadata
+        return (loader.pluginLoader || loader).normalize(load.metadata.loader, load.name)
+        .then(function(loaderNormalized) {
+          load.metadata.loader = loaderNormalized;
+          return address;
+        });
+      })
+      .then(function(address) {
+        var plugin = load.metadata.loader;
+
+        if (!plugin)
+          return address;
+
+        // don't allow a plugin to load itself
+        if (load.name == plugin)
+          throw new Error('Plugin ' + plugin + ' cannot load itself, make sure it is excluded from any wildcard meta configuration via a custom loader: false rule.');
+
+        // only fetch the plugin itself if this name isn't defined
+        if (loader.defined && loader.defined[name])
+          return address;
+
+        var pluginLoader = loader.pluginLoader || loader;
+
+        // load the plugin module and run standard locate
+        return pluginLoader['import'](plugin)
+        .then(function(loaderModule) {
+          // store the plugin module itself on the metadata
+          load.metadata.loaderModule = loaderModule;
+
+          load.address = address;
+          if (loaderModule.locate)
+            return loaderModule.locate.call(loader, load);
+
+          return address;
+        });
+      });
+    };
+  });
+
+  hook('fetch', function(fetch) {
+    return function(load) {
+      var loader = this;
+      if (load.metadata.loaderModule && load.metadata.loaderModule.fetch && load.metadata.format != 'defined') {
+        load.metadata.scriptLoad = false;
+        return load.metadata.loaderModule.fetch.call(loader, load, function(load) {
+          return fetch.call(loader, load);
+        });
+      }
+      else {
+        return fetch.call(loader, load);
+      }
+    };
+  });
+
+  hook('translate', function(translate) {
+    return function(load) {
+      var loader = this;
+      var args = arguments;
+      if (load.metadata.loaderModule && load.metadata.loaderModule.translate && load.metadata.format != 'defined') {
+        return Promise.resolve(load.metadata.loaderModule.translate.apply(loader, args)).then(function(result) {
+          var sourceMap = load.metadata.sourceMap;
+
+          // sanitize sourceMap if an object not a JSON string
+          if (sourceMap) {
+            if (typeof sourceMap != 'object')
+              throw new Error('load.metadata.sourceMap must be set to an object.');
+
+            var originalName = load.address.split('!')[0];
+            
+            // force set the filename of the original file
+            if (!sourceMap.file || sourceMap.file == load.address)
+              sourceMap.file = originalName + '!transpiled';
+
+            // force set the sources list if only one source
+            if (!sourceMap.sources || sourceMap.sources.length <= 1 && (!sourceMap.sources[0] || sourceMap.sources[0] == load.address))
+              sourceMap.sources = [originalName];
+          }
+
+          // if running on file:/// URLs, sourcesContent is necessary
+          // load.metadata.sourceMap.sourcesContent = [load.source];
+
+          if (typeof result == 'string')
+            load.source = result;
+          else
+            warn.call(this, 'Plugin ' + load.metadata.loader + ' should return the source in translate, instead of setting load.source directly. This support will be deprecated.');
+
+          return translate.apply(loader, args);
+        });
+      }
+      else {
+        return translate.apply(loader, args);
+      }
+    };
+  });
+
+  hook('instantiate', function(instantiate) {
+    return function(load) {
+      var loader = this;
+      var calledInstantiate = false;
+
+      if (load.metadata.loaderModule && load.metadata.loaderModule.instantiate && !loader.builder && load.metadata.format != 'defined')
+        return Promise.resolve(load.metadata.loaderModule.instantiate.call(loader, load, function(load) {
+          if (calledInstantiate)
+            throw new Error('Instantiate must only be called once.');
+          calledInstantiate = true;
+          return instantiate.call(loader, load);
+        })).then(function(result) {
+          if (calledInstantiate)
+            return result;
+
+          load.metadata.entry = createEntry();
+          load.metadata.entry.execute = function() {
+            return result;
+          }
+          load.metadata.entry.deps = load.metadata.deps;
+          load.metadata.format = 'defined';
+          return instantiate.call(loader, load);
+        });
+      else
+        return instantiate.call(loader, load);
+    };
+  });
+
+})();/*
+ * Conditions Extension
+ *
+ *   Allows a condition module to alter the resolution of an import via syntax:
+ *
+ *     import $ from 'jquery/#{browser}';
+ *
+ *   Will first load the module 'browser' via `SystemJS.import('browser')` and 
+ *   take the default export of that module.
+ *   If the default export is not a string, an error is thrown.
+ * 
+ *   We then substitute the string into the require to get the conditional resolution
+ *   enabling environment-specific variations like:
+ * 
+ *     import $ from 'jquery/ie'
+ *     import $ from 'jquery/firefox'
+ *     import $ from 'jquery/chrome'
+ *     import $ from 'jquery/safari'
+ *
+ *   It can be useful for a condition module to define multiple conditions.
+ *   This can be done via the `|` modifier to specify an export member expression:
+ *
+ *     import 'jquery/#{./browser.js|grade.version}'
+ *
+ *   Where the `grade` export `version` member in the `browser.js` module  is substituted.
+ *
+ *
+ * Boolean Conditionals
+ *
+ *   For polyfill modules, that are used as imports but have no module value,
+ *   a binary conditional allows a module not to be loaded at all if not needed:
+ *
+ *     import 'es5-shim#?./conditions.js|needs-es5shim'
+ *
+ *   These conditions can also be negated via:
+ *     
+ *     import 'es5-shim#?./conditions.js|~es6'
+ *
+ */
+
+  var sysConditions = ['browser', 'node', 'dev', 'build', 'production', 'default'];
+
+  function parseCondition(condition) {
+    var conditionExport, conditionModule, negation;
+
+    var negation = condition[0] == '~';
+    var conditionExportIndex = condition.lastIndexOf('|');
+    if (conditionExportIndex != -1) {
+      conditionExport = condition.substr(conditionExportIndex + 1);
+      conditionModule = condition.substr(negation, conditionExportIndex - negation);
+      
+      if (negation)
+        warn.call(this, 'Condition negation form "' + condition + '" is deprecated for "' + conditionModule + '|~' + conditionExport + '"');
+
+      if (conditionExport[0] == '~') {
+        negation = true;
+        conditionExport = conditionExport.substr(1);
+      }
+    }
+    else {
+      conditionExport = 'default';
+      conditionModule = condition.substr(negation);
+      if (sysConditions.indexOf(conditionModule) != -1) {
+        conditionExport = conditionModule;
+        conditionModule = null;
+      }
+    }
+
+    return {
+      module: conditionModule || '@system-env',
+      prop: conditionExport,
+      negate: negation
+    };
+  }
+
+  function serializeCondition(conditionObj) {
+    return conditionObj.module + '|' + (conditionObj.negate ? '~' : '') + conditionObj.prop;
+  }
+
+  function resolveCondition(conditionObj, parentName, bool) {
+    var self = this;
+    return this.normalize(conditionObj.module, parentName)
+    .then(function(normalizedCondition) {
+      return self.load(normalizedCondition)
+      .then(function(q) {
+        var m = readMemberExpression(conditionObj.prop, self.get(normalizedCondition));
+
+        if (bool && typeof m != 'boolean')
+          throw new TypeError('Condition ' + serializeCondition(conditionObj) + ' did not resolve to a boolean.');
+
+        return conditionObj.negate ? !m : m;
+      });
+    });
+  }
+
+  var interpolationRegEx = /#\{[^\}]+\}/;
+  function interpolateConditional(name, parentName) {
+    // first we normalize the conditional
+    var conditionalMatch = name.match(interpolationRegEx);
+
+    if (!conditionalMatch)
+      return Promise.resolve(name);
+
+    var conditionObj = parseCondition.call(this, conditionalMatch[0].substr(2, conditionalMatch[0].length - 3));
+
+    // in builds, return normalized conditional
+    if (this.builder)
+      return this['normalize'](conditionObj.module, parentName)
+      .then(function(conditionModule) {
+        conditionObj.module = conditionModule;
+        return name.replace(interpolationRegEx, '#{' + serializeCondition(conditionObj) + '}');
+      });
+
+    return resolveCondition.call(this, conditionObj, parentName, false)
+    .then(function(conditionValue) {
+      if (typeof conditionValue !== 'string')
+        throw new TypeError('The condition value for ' + name + ' doesn\'t resolve to a string.');
+
+      if (conditionValue.indexOf('/') != -1)
+        throw new TypeError('Unabled to interpolate conditional ' + name + (parentName ? ' in ' + parentName : '') + '\n\tThe condition value ' + conditionValue + ' cannot contain a "/" separator.');
+
+      return name.replace(interpolationRegEx, conditionValue);
+    });
+  }
+
+  function booleanConditional(name, parentName) {
+    // first we normalize the conditional
+    var booleanIndex = name.lastIndexOf('#?');
+
+    if (booleanIndex == -1)
+      return Promise.resolve(name);
+
+    var conditionObj = parseCondition.call(this, name.substr(booleanIndex + 2));
+
+    // in builds, return normalized conditional
+    if (this.builder)
+      return this['normalize'](conditionObj.module, parentName)
+      .then(function(conditionModule) {
+        conditionObj.module = conditionModule;
+        return name.substr(0, booleanIndex) + '#?' + serializeCondition(conditionObj);
+      });
+
+    return resolveCondition.call(this, conditionObj, parentName, true)
+    .then(function(conditionValue) {
+      return conditionValue ? name.substr(0, booleanIndex) : '@empty';
+    });
+  }
+
+  // normalizeSync does not parse conditionals at all although it could
+  hook('normalize', function(normalize) {
+    return function(name, parentName, skipExt) {
+      var loader = this;
+      return booleanConditional.call(loader, name, parentName)
+      .then(function(name) {
+        return normalize.call(loader, name, parentName, skipExt);
+      })
+      .then(function(normalized) {
+        return interpolateConditional.call(loader, normalized, parentName);
+      });
+    };
+  });
+/*
+ * Alias Extension
+ *
+ * Allows a module to be a plain copy of another module by module name
+ *
+ * SystemJS.meta['mybootstrapalias'] = { alias: 'bootstrap' };
+ *
+ */
+(function() {
+  // aliases
+  hook('fetch', function(fetch) {
+    return function(load) {
+      var alias = load.metadata.alias;
+      var aliasDeps = load.metadata.deps || [];
+      if (alias) {
+        load.metadata.format = 'defined';
+        var entry = createEntry();
+        this.defined[load.name] = entry;
+        entry.declarative = true;
+        entry.deps = aliasDeps.concat([alias]);
+        entry.declare = function(_export) {
+          return {
+            setters: [function(module) {
+              for (var p in module)
+                _export(p, module[p]);
+              if (module.__useDefault)
+                entry.module.exports.__useDefault = true;
+            }],
+            execute: function() {}
+          };
+        };
+        return '';
+      }
+
+      return fetch.call(this, load);
+    };
+  });
+})();/*
+ * Meta Extension
+ *
+ * Sets default metadata on a load record (load.metadata) from
+ * loader.metadata via SystemJS.meta function.
+ *
+ *
+ * Also provides an inline meta syntax for module meta in source.
+ *
+ * Eg:
+ *
+ * loader.meta({
+ *   'my/module': { deps: ['jquery'] }
+ *   'my/*': { format: 'amd' }
+ * });
+ *
+ * Which in turn populates loader.metadata.
+ *
+ * load.metadata.deps and load.metadata.format will then be set
+ * for 'my/module'
+ *
+ * The same meta could be set with a my/module.js file containing:
+ *
+ * my/module.js
+ *   "format amd";
+ *   "deps[] jquery";
+ *   "globals.some value"
+ *   console.log('this is my/module');
+ *
+ * Configuration meta always takes preference to inline meta.
+ *
+ * Multiple matches in wildcards are supported and ammend the meta.
+ *
+ *
+ * The benefits of the function form is that paths are URL-normalized
+ * supporting say
+ *
+ * loader.meta({ './app': { format: 'cjs' } });
+ *
+ * Instead of needing to set against the absolute URL (https://site.com/app.js)
+ *
+ */
+
+(function() {
+
+  hookConstructor(function(constructor) {
+    return function() {
+      this.meta = {};
+      constructor.call(this);
+    };
+  });
+
+  hook('locate', function(locate) {
+    return function(load) {
+      var meta = this.meta;
+      var name = load.name;
+
+      // NB for perf, maybe introduce a fast-path wildcard lookup cache here
+      // which is checked first
+
+      // apply wildcard metas
+      var bestDepth = 0;
+      var wildcardIndex;
+      for (var module in meta) {
+        wildcardIndex = module.indexOf('*');
+        if (wildcardIndex === -1)
+          continue;
+        if (module.substr(0, wildcardIndex) === name.substr(0, wildcardIndex)
+            && module.substr(wildcardIndex + 1) === name.substr(name.length - module.length + wildcardIndex + 1)) {
+          var depth = module.split('/').length;
+          if (depth > bestDepth)
+            bestDepth = depth;
+          extendMeta(load.metadata, meta[module], bestDepth != depth);
+        }
+      }
+
+      // apply exact meta
+      if (meta[name])
+        extendMeta(load.metadata, meta[name]);
+
+      return locate.call(this, load);
+    };
+  });
+
+  // detect any meta header syntax
+  // only set if not already set
+  var metaRegEx = /^(\s*\/\*[^\*]*(\*(?!\/)[^\*]*)*\*\/|\s*\/\/[^\n]*|\s*"[^"]+"\s*;?|\s*'[^']+'\s*;?)+/;
+  var metaPartRegEx = /\/\*[^\*]*(\*(?!\/)[^\*]*)*\*\/|\/\/[^\n]*|"[^"]+"\s*;?|'[^']+'\s*;?/g;
+
+  function setMetaProperty(target, p, value) {
+    var pParts = p.split('.');
+    var curPart;
+    while (pParts.length > 1) {
+      curPart = pParts.shift();
+      target = target[curPart] = target[curPart] || {};
+    }
+    curPart = pParts.shift();
+    if (!(curPart in target))
+      target[curPart] = value;
+  }
+
+  hook('translate', function(translate) {
+    return function(load) {
+      // shortpath for bundled
+      if (load.metadata.format == 'defined') {
+        load.metadata.deps = load.metadata.deps || [];
+        return Promise.resolve(load.source);
+      }
+
+      // NB meta will be post-translate pending transpiler conversion to plugins
+      var meta = load.source.match(metaRegEx);
+      if (meta) {
+        var metaParts = meta[0].match(metaPartRegEx);
+
+        for (var i = 0; i < metaParts.length; i++) {
+          var curPart = metaParts[i];
+          var len = curPart.length;
+
+          var firstChar = curPart.substr(0, 1);
+          if (curPart.substr(len - 1, 1) == ';')
+            len--;
+
+          if (firstChar != '"' && firstChar != "'")
+            continue;
+
+          var metaString = curPart.substr(1, curPart.length - 3);
+          var metaName = metaString.substr(0, metaString.indexOf(' '));
+
+          if (metaName) {
+            var metaValue = metaString.substr(metaName.length + 1, metaString.length - metaName.length - 1);
+
+            if (metaName.substr(metaName.length - 2, 2) == '[]') {
+              metaName = metaName.substr(0, metaName.length - 2);
+              load.metadata[metaName] = load.metadata[metaName] || [];
+              load.metadata[metaName].push(metaValue);
+            }
+            else if (load.metadata[metaName] instanceof Array) {
+              // temporary backwards compat for previous "deps" syntax
+              warn.call(this, 'Module ' + load.name + ' contains deprecated "deps ' + metaValue + '" meta syntax.\nThis should be updated to "deps[] ' + metaValue + '" for pushing to array meta.');
+              load.metadata[metaName].push(metaValue);
+            }
+            else {
+              setMetaProperty(load.metadata, metaName, metaValue);
+            }
+          }
+          else {
+            load.metadata[metaString] = true;
+          }
+        }
+      }
+
+      return translate.apply(this, arguments);
+    };
+  });
+})();
+/*
+  System bundles
+
+  Allows a bundle module to be specified which will be dynamically 
+  loaded before trying to load a given module.
+
+  For example:
+  SystemJS.bundles['mybundle'] = ['jquery', 'bootstrap/js/bootstrap']
+
+  Will result in a load to "mybundle" whenever a load to "jquery"
+  or "bootstrap/js/bootstrap" is made.
+
+  In this way, the bundle becomes the request that provides the module
+*/
+
+(function() {
+  // bundles support (just like RequireJS)
+  // bundle name is module name of bundle itself
+  // bundle is array of modules defined by the bundle
+  // when a module in the bundle is requested, the bundle is loaded instead
+  // of the form SystemJS.bundles['mybundle'] = ['jquery', 'bootstrap/js/bootstrap']
+  hookConstructor(function(constructor) {
+    return function() {
+      constructor.call(this);
+      this.bundles = {};
+      this._loader.loadedBundles = {};
+    };
+  });
+
+  // assign bundle metadata for bundle loads
+  hook('locate', function(locate) {
+    return function(load) {
+      var loader = this;
+      var matched = false;
+
+      if (!(load.name in loader.defined))
+        for (var b in loader.bundles) {
+          for (var i = 0; i < loader.bundles[b].length; i++) {
+            var curModule = loader.bundles[b][i];
+
+            if (curModule == load.name) {
+              matched = true;
+              break;
+            }
+
+            // wildcard in bundles does not include / boundaries
+            if (curModule.indexOf('*') != -1) {
+              var parts = curModule.split('*');
+              if (parts.length != 2) {
+                loader.bundles[b].splice(i--, 1);
+                continue;
+              }
+              
+              if (load.name.substring(0, parts[0].length) == parts[0] &&
+                  load.name.substr(load.name.length - parts[1].length, parts[1].length) == parts[1] &&
+                  load.name.substr(parts[0].length, load.name.length - parts[1].length - parts[0].length).indexOf('/') == -1) {
+                matched = true;
+                break;
+              }
+            }
+          }
+
+          if (matched)
+            return loader['import'](b)
+            .then(function() {
+              return locate.call(loader, load);
+            });
+        }
+
+      return locate.call(loader, load);
+    };
+  });
+})();
+/*
+ * Dependency Tree Cache
+ * 
+ * Allows a build to pre-populate a dependency trace tree on the loader of 
+ * the expected dependency tree, to be loaded upfront when requesting the
+ * module, avoinding the n round trips latency of module loading, where 
+ * n is the dependency tree depth.
+ *
+ * eg:
+ * SystemJS.depCache = {
+ *  'app': ['normalized', 'deps'],
+ *  'normalized': ['another'],
+ *  'deps': ['tree']
+ * };
+ * 
+ * SystemJS.import('app') 
+ * // simultaneously starts loading all of:
+ * // 'normalized', 'deps', 'another', 'tree'
+ * // before "app" source is even loaded
+ *
+ */
+
+(function() {
+  hookConstructor(function(constructor) {
+    return function() {
+      constructor.call(this);
+      this.depCache = {};
+    }
+  });
+
+  hook('locate', function(locate) {
+    return function(load) {
+      var loader = this;
+      // load direct deps, in turn will pick up their trace trees
+      var deps = loader.depCache[load.name];
+      if (deps)
+        for (var i = 0; i < deps.length; i++)
+          loader['import'](deps[i], load.name);
+
+      return locate.call(loader, load);
+    };
+  });
+})();
+  
+System = new SystemJSLoader();
+
+__global.SystemJS = System;
+System.version = '0.19.39 Standard';
+  if (typeof module == 'object' && module.exports && typeof exports == 'object')
+    module.exports = System;
+
+  __global.System = System;
+
+})(typeof self != 'undefined' ? self : global);}
+
+// auto-load Promise polyfill if needed in the browser
+var doPolyfill = typeof Promise === 'undefined';
+
+// document.write
+if (typeof document !== 'undefined') {
+  var scripts = document.getElementsByTagName('script');
+  $__curScript = scripts[scripts.length - 1];
+  if (document.currentScript && ($__curScript.defer || $__curScript.async))
+    $__curScript = document.currentScript;
+  if (doPolyfill) {
+    var curPath = $__curScript.src;
+    var basePath = curPath.substr(0, curPath.lastIndexOf('/') + 1);
+    window.systemJSBootstrap = bootstrap;
+    document.write(
+      '<' + 'script type="text/javascript" src="' + basePath + 'system-polyfills.js">' + '<' + '/script>'
+    );
+  }
+  else {
+    bootstrap();
+  }
+}
+// importScripts
+else if (typeof importScripts !== 'undefined') {
+  var basePath = '';
+  try {
+    throw new Error('_');
+  } catch (e) {
+    e.stack.replace(/(?:at|@).*(http.+):[\d]+:[\d]+/, function(m, url) {
+      $__curScript = { src: url };
+      basePath = url.replace(/\/[^\/]*$/, '/');
+    });
+  }
+  if (doPolyfill)
+    importScripts(basePath + 'system-polyfills.js');
+  bootstrap();
+}
+else {
+  $__curScript = typeof __filename != 'undefined' ? { src: __filename } : null;
+  bootstrap();
+}
+
+
+})();
+\ No newline at end of file