1 files changed, 73 insertions, 0 deletions
diff --git a/lib/bundles.js b/lib/bundles.js
new file mode 100644
index 000000000..c22a44986
--- /dev/null
+++ b/lib/bundles.js
@@ -0,0 +1,73 @@
+/*
+  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);
+    };
+  });
+})();