add linting (and some initial fixes)

1 files changed, 551 insertions, 0 deletions

diff --git a/node_modules/babel-plugin-transform-es2015-destructuring/lib/index.js b/node_modules/babel-plugin-transform-es2015-destructuring/lib/index.js
new file mode 100644
index 000000000..689fb60c6
--- /dev/null
+++ b/node_modules/babel-plugin-transform-es2015-destructuring/lib/index.js
@@ -0,0 +1,551 @@
+"use strict";
+
+exports.__esModule = true;
+
+var _classCallCheck2 = require("babel-runtime/helpers/classCallCheck");
+
+var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);
+
+var _getIterator2 = require("babel-runtime/core-js/get-iterator");
+
+var _getIterator3 = _interopRequireDefault(_getIterator2);
+
+exports.default = function (_ref) {
+  var t = _ref.types;
+
+
+  function variableDeclarationHasPattern(node) {
+    for (var _iterator = node.declarations, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
+      var _ref2;
+
+      if (_isArray) {
+        if (_i >= _iterator.length) break;
+        _ref2 = _iterator[_i++];
+      } else {
+        _i = _iterator.next();
+        if (_i.done) break;
+        _ref2 = _i.value;
+      }
+
+      var declar = _ref2;
+
+      if (t.isPattern(declar.id)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  function hasRest(pattern) {
+    for (var _iterator2 = pattern.elements, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : (0, _getIterator3.default)(_iterator2);;) {
+      var _ref3;
+
+      if (_isArray2) {
+        if (_i2 >= _iterator2.length) break;
+        _ref3 = _iterator2[_i2++];
+      } else {
+        _i2 = _iterator2.next();
+        if (_i2.done) break;
+        _ref3 = _i2.value;
+      }
+
+      var elem = _ref3;
+
+      if (t.isRestElement(elem)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  var arrayUnpackVisitor = {
+    ReferencedIdentifier: function ReferencedIdentifier(path, state) {
+      if (state.bindings[path.node.name]) {
+        state.deopt = true;
+        path.stop();
+      }
+    }
+  };
+
+  var DestructuringTransformer = function () {
+    function DestructuringTransformer(opts) {
+      (0, _classCallCheck3.default)(this, DestructuringTransformer);
+
+      this.blockHoist = opts.blockHoist;
+      this.operator = opts.operator;
+      this.arrays = {};
+      this.nodes = opts.nodes || [];
+      this.scope = opts.scope;
+      this.file = opts.file;
+      this.kind = opts.kind;
+    }
+
+    DestructuringTransformer.prototype.buildVariableAssignment = function buildVariableAssignment(id, init) {
+      var op = this.operator;
+      if (t.isMemberExpression(id)) op = "=";
+
+      var node = void 0;
+
+      if (op) {
+        node = t.expressionStatement(t.assignmentExpression(op, id, init));
+      } else {
+        node = t.variableDeclaration(this.kind, [t.variableDeclarator(id, init)]);
+      }
+
+      node._blockHoist = this.blockHoist;
+
+      return node;
+    };
+
+    DestructuringTransformer.prototype.buildVariableDeclaration = function buildVariableDeclaration(id, init) {
+      var declar = t.variableDeclaration("var", [t.variableDeclarator(id, init)]);
+      declar._blockHoist = this.blockHoist;
+      return declar;
+    };
+
+    DestructuringTransformer.prototype.push = function push(id, init) {
+      if (t.isObjectPattern(id)) {
+        this.pushObjectPattern(id, init);
+      } else if (t.isArrayPattern(id)) {
+        this.pushArrayPattern(id, init);
+      } else if (t.isAssignmentPattern(id)) {
+        this.pushAssignmentPattern(id, init);
+      } else {
+        this.nodes.push(this.buildVariableAssignment(id, init));
+      }
+    };
+
+    DestructuringTransformer.prototype.toArray = function toArray(node, count) {
+      if (this.file.opts.loose || t.isIdentifier(node) && this.arrays[node.name]) {
+        return node;
+      } else {
+        return this.scope.toArray(node, count);
+      }
+    };
+
+    DestructuringTransformer.prototype.pushAssignmentPattern = function pushAssignmentPattern(pattern, valueRef) {
+
+      var tempValueRef = this.scope.generateUidIdentifierBasedOnNode(valueRef);
+
+      var declar = t.variableDeclaration("var", [t.variableDeclarator(tempValueRef, valueRef)]);
+      declar._blockHoist = this.blockHoist;
+      this.nodes.push(declar);
+
+      var tempConditional = t.conditionalExpression(t.binaryExpression("===", tempValueRef, t.identifier("undefined")), pattern.right, tempValueRef);
+
+      var left = pattern.left;
+      if (t.isPattern(left)) {
+        var tempValueDefault = t.expressionStatement(t.assignmentExpression("=", tempValueRef, tempConditional));
+        tempValueDefault._blockHoist = this.blockHoist;
+
+        this.nodes.push(tempValueDefault);
+        this.push(left, tempValueRef);
+      } else {
+        this.nodes.push(this.buildVariableAssignment(left, tempConditional));
+      }
+    };
+
+    DestructuringTransformer.prototype.pushObjectRest = function pushObjectRest(pattern, objRef, spreadProp, spreadPropIndex) {
+
+      var keys = [];
+
+      for (var i = 0; i < pattern.properties.length; i++) {
+        var prop = pattern.properties[i];
+
+        if (i >= spreadPropIndex) break;
+
+        if (t.isRestProperty(prop)) continue;
+
+        var key = prop.key;
+        if (t.isIdentifier(key) && !prop.computed) key = t.stringLiteral(prop.key.name);
+        keys.push(key);
+      }
+
+      keys = t.arrayExpression(keys);
+
+      var value = t.callExpression(this.file.addHelper("objectWithoutProperties"), [objRef, keys]);
+      this.nodes.push(this.buildVariableAssignment(spreadProp.argument, value));
+    };
+
+    DestructuringTransformer.prototype.pushObjectProperty = function pushObjectProperty(prop, propRef) {
+      if (t.isLiteral(prop.key)) prop.computed = true;
+
+      var pattern = prop.value;
+      var objRef = t.memberExpression(propRef, prop.key, prop.computed);
+
+      if (t.isPattern(pattern)) {
+        this.push(pattern, objRef);
+      } else {
+        this.nodes.push(this.buildVariableAssignment(pattern, objRef));
+      }
+    };
+
+    DestructuringTransformer.prototype.pushObjectPattern = function pushObjectPattern(pattern, objRef) {
+
+      if (!pattern.properties.length) {
+        this.nodes.push(t.expressionStatement(t.callExpression(this.file.addHelper("objectDestructuringEmpty"), [objRef])));
+      }
+
+      if (pattern.properties.length > 1 && !this.scope.isStatic(objRef)) {
+        var temp = this.scope.generateUidIdentifierBasedOnNode(objRef);
+        this.nodes.push(this.buildVariableDeclaration(temp, objRef));
+        objRef = temp;
+      }
+
+      for (var i = 0; i < pattern.properties.length; i++) {
+        var prop = pattern.properties[i];
+        if (t.isRestProperty(prop)) {
+          this.pushObjectRest(pattern, objRef, prop, i);
+        } else {
+          this.pushObjectProperty(prop, objRef);
+        }
+      }
+    };
+
+    DestructuringTransformer.prototype.canUnpackArrayPattern = function canUnpackArrayPattern(pattern, arr) {
+      if (!t.isArrayExpression(arr)) return false;
+
+      if (pattern.elements.length > arr.elements.length) return;
+      if (pattern.elements.length < arr.elements.length && !hasRest(pattern)) return false;
+
+      for (var _iterator3 = pattern.elements, _isArray3 = Array.isArray(_iterator3), _i3 = 0, _iterator3 = _isArray3 ? _iterator3 : (0, _getIterator3.default)(_iterator3);;) {
+        var _ref4;
+
+        if (_isArray3) {
+          if (_i3 >= _iterator3.length) break;
+          _ref4 = _iterator3[_i3++];
+        } else {
+          _i3 = _iterator3.next();
+          if (_i3.done) break;
+          _ref4 = _i3.value;
+        }
+
+        var elem = _ref4;
+
+        if (!elem) return false;
+
+        if (t.isMemberExpression(elem)) return false;
+      }
+
+      for (var _iterator4 = arr.elements, _isArray4 = Array.isArray(_iterator4), _i4 = 0, _iterator4 = _isArray4 ? _iterator4 : (0, _getIterator3.default)(_iterator4);;) {
+        var _ref5;
+
+        if (_isArray4) {
+          if (_i4 >= _iterator4.length) break;
+          _ref5 = _iterator4[_i4++];
+        } else {
+          _i4 = _iterator4.next();
+          if (_i4.done) break;
+          _ref5 = _i4.value;
+        }
+
+        var _elem = _ref5;
+
+        if (t.isSpreadElement(_elem)) return false;
+
+        if (t.isCallExpression(_elem)) return false;
+
+        if (t.isMemberExpression(_elem)) return false;
+      }
+
+      var bindings = t.getBindingIdentifiers(pattern);
+      var state = { deopt: false, bindings: bindings };
+      this.scope.traverse(arr, arrayUnpackVisitor, state);
+      return !state.deopt;
+    };
+
+    DestructuringTransformer.prototype.pushUnpackedArrayPattern = function pushUnpackedArrayPattern(pattern, arr) {
+      for (var i = 0; i < pattern.elements.length; i++) {
+        var elem = pattern.elements[i];
+        if (t.isRestElement(elem)) {
+          this.push(elem.argument, t.arrayExpression(arr.elements.slice(i)));
+        } else {
+          this.push(elem, arr.elements[i]);
+        }
+      }
+    };
+
+    DestructuringTransformer.prototype.pushArrayPattern = function pushArrayPattern(pattern, arrayRef) {
+      if (!pattern.elements) return;
+
+      if (this.canUnpackArrayPattern(pattern, arrayRef)) {
+        return this.pushUnpackedArrayPattern(pattern, arrayRef);
+      }
+
+      var count = !hasRest(pattern) && pattern.elements.length;
+
+      var toArray = this.toArray(arrayRef, count);
+
+      if (t.isIdentifier(toArray)) {
+        arrayRef = toArray;
+      } else {
+        arrayRef = this.scope.generateUidIdentifierBasedOnNode(arrayRef);
+        this.arrays[arrayRef.name] = true;
+        this.nodes.push(this.buildVariableDeclaration(arrayRef, toArray));
+      }
+
+      for (var i = 0; i < pattern.elements.length; i++) {
+        var elem = pattern.elements[i];
+
+        if (!elem) continue;
+
+        var elemRef = void 0;
+
+        if (t.isRestElement(elem)) {
+          elemRef = this.toArray(arrayRef);
+          elemRef = t.callExpression(t.memberExpression(elemRef, t.identifier("slice")), [t.numericLiteral(i)]);
+
+          elem = elem.argument;
+        } else {
+          elemRef = t.memberExpression(arrayRef, t.numericLiteral(i), true);
+        }
+
+        this.push(elem, elemRef);
+      }
+    };
+
+    DestructuringTransformer.prototype.init = function init(pattern, ref) {
+
+      if (!t.isArrayExpression(ref) && !t.isMemberExpression(ref)) {
+        var memo = this.scope.maybeGenerateMemoised(ref, true);
+        if (memo) {
+          this.nodes.push(this.buildVariableDeclaration(memo, ref));
+          ref = memo;
+        }
+      }
+
+      this.push(pattern, ref);
+
+      return this.nodes;
+    };
+
+    return DestructuringTransformer;
+  }();
+
+  return {
+    visitor: {
+      ExportNamedDeclaration: function ExportNamedDeclaration(path) {
+        var declaration = path.get("declaration");
+        if (!declaration.isVariableDeclaration()) return;
+        if (!variableDeclarationHasPattern(declaration.node)) return;
+
+        var specifiers = [];
+
+        for (var name in path.getOuterBindingIdentifiers(path)) {
+          var id = t.identifier(name);
+          specifiers.push(t.exportSpecifier(id, id));
+        }
+
+        path.replaceWith(declaration.node);
+        path.insertAfter(t.exportNamedDeclaration(null, specifiers));
+      },
+      ForXStatement: function ForXStatement(path, file) {
+        var node = path.node,
+            scope = path.scope;
+
+        var left = node.left;
+
+        if (t.isPattern(left)) {
+
+          var temp = scope.generateUidIdentifier("ref");
+
+          node.left = t.variableDeclaration("var", [t.variableDeclarator(temp)]);
+
+          path.ensureBlock();
+
+          node.body.body.unshift(t.variableDeclaration("var", [t.variableDeclarator(left, temp)]));
+
+          return;
+        }
+
+        if (!t.isVariableDeclaration(left)) return;
+
+        var pattern = left.declarations[0].id;
+        if (!t.isPattern(pattern)) return;
+
+        var key = scope.generateUidIdentifier("ref");
+        node.left = t.variableDeclaration(left.kind, [t.variableDeclarator(key, null)]);
+
+        var nodes = [];
+
+        var destructuring = new DestructuringTransformer({
+          kind: left.kind,
+          file: file,
+          scope: scope,
+          nodes: nodes
+        });
+
+        destructuring.init(pattern, key);
+
+        path.ensureBlock();
+
+        var block = node.body;
+        block.body = nodes.concat(block.body);
+      },
+      CatchClause: function CatchClause(_ref6, file) {
+        var node = _ref6.node,
+            scope = _ref6.scope;
+
+        var pattern = node.param;
+        if (!t.isPattern(pattern)) return;
+
+        var ref = scope.generateUidIdentifier("ref");
+        node.param = ref;
+
+        var nodes = [];
+
+        var destructuring = new DestructuringTransformer({
+          kind: "let",
+          file: file,
+          scope: scope,
+          nodes: nodes
+        });
+        destructuring.init(pattern, ref);
+
+        node.body.body = nodes.concat(node.body.body);
+      },
+      AssignmentExpression: function AssignmentExpression(path, file) {
+        var node = path.node,
+            scope = path.scope;
+
+        if (!t.isPattern(node.left)) return;
+
+        var nodes = [];
+
+        var destructuring = new DestructuringTransformer({
+          operator: node.operator,
+          file: file,
+          scope: scope,
+          nodes: nodes
+        });
+
+        var ref = void 0;
+        if (path.isCompletionRecord() || !path.parentPath.isExpressionStatement()) {
+          ref = scope.generateUidIdentifierBasedOnNode(node.right, "ref");
+
+          nodes.push(t.variableDeclaration("var", [t.variableDeclarator(ref, node.right)]));
+
+          if (t.isArrayExpression(node.right)) {
+            destructuring.arrays[ref.name] = true;
+          }
+        }
+
+        destructuring.init(node.left, ref || node.right);
+
+        if (ref) {
+          nodes.push(t.expressionStatement(ref));
+        }
+
+        path.replaceWithMultiple(nodes);
+      },
+      VariableDeclaration: function VariableDeclaration(path, file) {
+        var node = path.node,
+            scope = path.scope,
+            parent = path.parent;
+
+        if (t.isForXStatement(parent)) return;
+        if (!parent || !path.container) return;
+        if (!variableDeclarationHasPattern(node)) return;
+
+        var nodes = [];
+        var declar = void 0;
+
+        for (var i = 0; i < node.declarations.length; i++) {
+          declar = node.declarations[i];
+
+          var patternId = declar.init;
+          var pattern = declar.id;
+
+          var destructuring = new DestructuringTransformer({
+            blockHoist: node._blockHoist,
+            nodes: nodes,
+            scope: scope,
+            kind: node.kind,
+            file: file
+          });
+
+          if (t.isPattern(pattern)) {
+            destructuring.init(pattern, patternId);
+
+            if (+i !== node.declarations.length - 1) {
+              t.inherits(nodes[nodes.length - 1], declar);
+            }
+          } else {
+            nodes.push(t.inherits(destructuring.buildVariableAssignment(declar.id, declar.init), declar));
+          }
+        }
+
+        var nodesOut = [];
+        for (var _iterator5 = nodes, _isArray5 = Array.isArray(_iterator5), _i5 = 0, _iterator5 = _isArray5 ? _iterator5 : (0, _getIterator3.default)(_iterator5);;) {
+          var _ref7;
+
+          if (_isArray5) {
+            if (_i5 >= _iterator5.length) break;
+            _ref7 = _iterator5[_i5++];
+          } else {
+            _i5 = _iterator5.next();
+            if (_i5.done) break;
+            _ref7 = _i5.value;
+          }
+
+          var _node = _ref7;
+
+          var tail = nodesOut[nodesOut.length - 1];
+          if (tail && t.isVariableDeclaration(tail) && t.isVariableDeclaration(_node) && tail.kind === _node.kind) {
+            var _tail$declarations;
+
+            (_tail$declarations = tail.declarations).push.apply(_tail$declarations, _node.declarations);
+          } else {
+            nodesOut.push(_node);
+          }
+        }
+
+        for (var _iterator6 = nodesOut, _isArray6 = Array.isArray(_iterator6), _i6 = 0, _iterator6 = _isArray6 ? _iterator6 : (0, _getIterator3.default)(_iterator6);;) {
+          var _ref8;
+
+          if (_isArray6) {
+            if (_i6 >= _iterator6.length) break;
+            _ref8 = _iterator6[_i6++];
+          } else {
+            _i6 = _iterator6.next();
+            if (_i6.done) break;
+            _ref8 = _i6.value;
+          }
+
+          var nodeOut = _ref8;
+
+          if (!nodeOut.declarations) continue;
+          for (var _iterator7 = nodeOut.declarations, _isArray7 = Array.isArray(_iterator7), _i7 = 0, _iterator7 = _isArray7 ? _iterator7 : (0, _getIterator3.default)(_iterator7);;) {
+            var _ref9;
+
+            if (_isArray7) {
+              if (_i7 >= _iterator7.length) break;
+              _ref9 = _iterator7[_i7++];
+            } else {
+              _i7 = _iterator7.next();
+              if (_i7.done) break;
+              _ref9 = _i7.value;
+            }
+
+            var declaration = _ref9;
+            var name = declaration.id.name;
+
+            if (scope.bindings[name]) {
+              scope.bindings[name].kind = nodeOut.kind;
+            }
+          }
+        }
+
+        if (nodesOut.length === 1) {
+          path.replaceWith(nodesOut[0]);
+        } else {
+          path.replaceWithMultiple(nodesOut);
+        }
+      }
+    }
+  };
+};
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+module.exports = exports["default"];
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