add linting (and some initial fixes)

4 files changed, 511 insertions, 0 deletions

diff --git a/node_modules/babel-plugin-transform-es2015-parameters/lib/default.js b/node_modules/babel-plugin-transform-es2015-parameters/lib/default.js
new file mode 100644
index 000000000..f0d982fd5
--- /dev/null
+++ b/node_modules/babel-plugin-transform-es2015-parameters/lib/default.js
@@ -0,0 +1,162 @@
+"use strict";
+
+exports.__esModule = true;
+exports.visitor = undefined;
+
+var _getIterator2 = require("babel-runtime/core-js/get-iterator");
+
+var _getIterator3 = _interopRequireDefault(_getIterator2);
+
+var _babelHelperGetFunctionArity = require("babel-helper-get-function-arity");
+
+var _babelHelperGetFunctionArity2 = _interopRequireDefault(_babelHelperGetFunctionArity);
+
+var _babelHelperCallDelegate = require("babel-helper-call-delegate");
+
+var _babelHelperCallDelegate2 = _interopRequireDefault(_babelHelperCallDelegate);
+
+var _babelTemplate = require("babel-template");
+
+var _babelTemplate2 = _interopRequireDefault(_babelTemplate);
+
+var _babelTypes = require("babel-types");
+
+var t = _interopRequireWildcard(_babelTypes);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var buildDefaultParam = (0, _babelTemplate2.default)("\n  let VARIABLE_NAME =\n    ARGUMENTS.length > ARGUMENT_KEY && ARGUMENTS[ARGUMENT_KEY] !== undefined ?\n      ARGUMENTS[ARGUMENT_KEY]\n    :\n      DEFAULT_VALUE;\n");
+
+var buildCutOff = (0, _babelTemplate2.default)("\n  let $0 = $1[$2];\n");
+
+function hasDefaults(node) {
+  for (var _iterator = node.params, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
+    var _ref;
+
+    if (_isArray) {
+      if (_i >= _iterator.length) break;
+      _ref = _iterator[_i++];
+    } else {
+      _i = _iterator.next();
+      if (_i.done) break;
+      _ref = _i.value;
+    }
+
+    var param = _ref;
+
+    if (!t.isIdentifier(param)) return true;
+  }
+  return false;
+}
+
+function isSafeBinding(scope, node) {
+  if (!scope.hasOwnBinding(node.name)) return true;
+
+  var _scope$getOwnBinding = scope.getOwnBinding(node.name),
+      kind = _scope$getOwnBinding.kind;
+
+  return kind === "param" || kind === "local";
+}
+
+var iifeVisitor = {
+  ReferencedIdentifier: function ReferencedIdentifier(path, state) {
+    var scope = path.scope,
+        node = path.node;
+
+    if (node.name === "eval" || !isSafeBinding(scope, node)) {
+      state.iife = true;
+      path.stop();
+    }
+  },
+  Scope: function Scope(path) {
+    path.skip();
+  }
+};
+
+var visitor = exports.visitor = {
+  Function: function Function(path) {
+    var node = path.node,
+        scope = path.scope;
+
+    if (!hasDefaults(node)) return;
+
+    path.ensureBlock();
+
+    var state = {
+      iife: false,
+      scope: scope
+    };
+
+    var body = [];
+
+    var argsIdentifier = t.identifier("arguments");
+    argsIdentifier._shadowedFunctionLiteral = path;
+
+    function pushDefNode(left, right, i) {
+      var defNode = buildDefaultParam({
+        VARIABLE_NAME: left,
+        DEFAULT_VALUE: right,
+        ARGUMENT_KEY: t.numericLiteral(i),
+        ARGUMENTS: argsIdentifier
+      });
+      defNode._blockHoist = node.params.length - i;
+      body.push(defNode);
+    }
+
+    var lastNonDefaultParam = (0, _babelHelperGetFunctionArity2.default)(node);
+
+    var params = path.get("params");
+    for (var i = 0; i < params.length; i++) {
+      var param = params[i];
+
+      if (!param.isAssignmentPattern()) {
+        if (!state.iife && !param.isIdentifier()) {
+          param.traverse(iifeVisitor, state);
+        }
+
+        continue;
+      }
+
+      var left = param.get("left");
+      var right = param.get("right");
+
+      if (i >= lastNonDefaultParam || left.isPattern()) {
+        var placeholder = scope.generateUidIdentifier("x");
+        placeholder._isDefaultPlaceholder = true;
+        node.params[i] = placeholder;
+      } else {
+        node.params[i] = left.node;
+      }
+
+      if (!state.iife) {
+        if (right.isIdentifier() && !isSafeBinding(scope, right.node)) {
+          state.iife = true;
+        } else {
+          right.traverse(iifeVisitor, state);
+        }
+      }
+
+      pushDefNode(left.node, right.node, i);
+    }
+
+    for (var _i2 = lastNonDefaultParam + 1; _i2 < node.params.length; _i2++) {
+      var _param = node.params[_i2];
+      if (_param._isDefaultPlaceholder) continue;
+
+      var declar = buildCutOff(_param, argsIdentifier, t.numericLiteral(_i2));
+      declar._blockHoist = node.params.length - _i2;
+      body.push(declar);
+    }
+
+    node.params = node.params.slice(0, lastNonDefaultParam);
+
+    if (state.iife) {
+      body.push((0, _babelHelperCallDelegate2.default)(path, scope));
+      path.set("body", t.blockStatement(body));
+    } else {
+      path.get("body").unshiftContainer("body", body);
+    }
+  }
+};
\ No newline at end of file
diff --git a/node_modules/babel-plugin-transform-es2015-parameters/lib/destructuring.js b/node_modules/babel-plugin-transform-es2015-parameters/lib/destructuring.js
new file mode 100644
index 000000000..896c7c131
--- /dev/null
+++ b/node_modules/babel-plugin-transform-es2015-parameters/lib/destructuring.js
@@ -0,0 +1,34 @@
+"use strict";
+
+exports.__esModule = true;
+exports.visitor = undefined;
+
+var _babelTypes = require("babel-types");
+
+var t = _interopRequireWildcard(_babelTypes);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+var visitor = exports.visitor = {
+  Function: function Function(path) {
+    var params = path.get("params");
+
+    var hoistTweak = t.isRestElement(params[params.length - 1]) ? 1 : 0;
+    var outputParamsLength = params.length - hoistTweak;
+
+    for (var i = 0; i < outputParamsLength; i++) {
+      var param = params[i];
+      if (param.isArrayPattern() || param.isObjectPattern()) {
+        var uid = path.scope.generateUidIdentifier("ref");
+
+        var declar = t.variableDeclaration("let", [t.variableDeclarator(param.node, uid)]);
+        declar._blockHoist = outputParamsLength - i;
+
+        path.ensureBlock();
+        path.get("body").unshiftContainer("body", declar);
+
+        param.replaceWith(uid);
+      }
+    }
+  }
+};
\ No newline at end of file
diff --git a/node_modules/babel-plugin-transform-es2015-parameters/lib/index.js b/node_modules/babel-plugin-transform-es2015-parameters/lib/index.js
new file mode 100644
index 000000000..feab6db0d
--- /dev/null
+++ b/node_modules/babel-plugin-transform-es2015-parameters/lib/index.js
@@ -0,0 +1,56 @@
+"use strict";
+
+exports.__esModule = true;
+
+var _getIterator2 = require("babel-runtime/core-js/get-iterator");
+
+var _getIterator3 = _interopRequireDefault(_getIterator2);
+
+exports.default = function () {
+  return {
+    visitor: _babelTraverse.visitors.merge([{
+      ArrowFunctionExpression: function ArrowFunctionExpression(path) {
+        var params = path.get("params");
+        for (var _iterator = params, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
+          var _ref;
+
+          if (_isArray) {
+            if (_i >= _iterator.length) break;
+            _ref = _iterator[_i++];
+          } else {
+            _i = _iterator.next();
+            if (_i.done) break;
+            _ref = _i.value;
+          }
+
+          var param = _ref;
+
+          if (param.isRestElement() || param.isAssignmentPattern()) {
+            path.arrowFunctionToShadowed();
+            break;
+          }
+        }
+      }
+    }, destructuring.visitor, rest.visitor, def.visitor])
+  };
+};
+
+var _babelTraverse = require("babel-traverse");
+
+var _destructuring = require("./destructuring");
+
+var destructuring = _interopRequireWildcard(_destructuring);
+
+var _default = require("./default");
+
+var def = _interopRequireWildcard(_default);
+
+var _rest = require("./rest");
+
+var rest = _interopRequireWildcard(_rest);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+module.exports = exports["default"];
\ No newline at end of file
diff --git a/node_modules/babel-plugin-transform-es2015-parameters/lib/rest.js b/node_modules/babel-plugin-transform-es2015-parameters/lib/rest.js
new file mode 100644
index 000000000..ef056dd3b
--- /dev/null
+++ b/node_modules/babel-plugin-transform-es2015-parameters/lib/rest.js
@@ -0,0 +1,259 @@
+"use strict";
+
+exports.__esModule = true;
+exports.visitor = undefined;
+
+var _getIterator2 = require("babel-runtime/core-js/get-iterator");
+
+var _getIterator3 = _interopRequireDefault(_getIterator2);
+
+var _babelTemplate = require("babel-template");
+
+var _babelTemplate2 = _interopRequireDefault(_babelTemplate);
+
+var _babelTypes = require("babel-types");
+
+var t = _interopRequireWildcard(_babelTypes);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var buildRest = (0, _babelTemplate2.default)("\n  for (var LEN = ARGUMENTS.length,\n           ARRAY = Array(ARRAY_LEN),\n           KEY = START;\n       KEY < LEN;\n       KEY++) {\n    ARRAY[ARRAY_KEY] = ARGUMENTS[KEY];\n  }\n");
+
+var restIndex = (0, _babelTemplate2.default)("\n  ARGUMENTS.length <= INDEX ? undefined : ARGUMENTS[INDEX]\n");
+
+var restIndexImpure = (0, _babelTemplate2.default)("\n  REF = INDEX, ARGUMENTS.length <= REF ? undefined : ARGUMENTS[REF]\n");
+
+var restLength = (0, _babelTemplate2.default)("\n  ARGUMENTS.length <= OFFSET ? 0 : ARGUMENTS.length - OFFSET\n");
+
+var memberExpressionOptimisationVisitor = {
+  Scope: function Scope(path, state) {
+    if (!path.scope.bindingIdentifierEquals(state.name, state.outerBinding)) {
+      path.skip();
+    }
+  },
+  Flow: function Flow(path) {
+    if (path.isTypeCastExpression()) return;
+
+    path.skip();
+  },
+
+
+  "Function|ClassProperty": function FunctionClassProperty(path, state) {
+    var oldNoOptimise = state.noOptimise;
+    state.noOptimise = true;
+    path.traverse(memberExpressionOptimisationVisitor, state);
+    state.noOptimise = oldNoOptimise;
+
+    path.skip();
+  },
+
+  ReferencedIdentifier: function ReferencedIdentifier(path, state) {
+    var node = path.node;
+
+    if (node.name === "arguments") {
+      state.deopted = true;
+    }
+
+    if (node.name !== state.name) return;
+
+    if (state.noOptimise) {
+      state.deopted = true;
+    } else {
+      var parentPath = path.parentPath;
+
+      if (parentPath.listKey === "params" && parentPath.key < state.offset) {
+        return;
+      }
+
+      if (parentPath.isMemberExpression({ object: node })) {
+        var grandparentPath = parentPath.parentPath;
+
+        var argsOptEligible = !state.deopted && !(grandparentPath.isAssignmentExpression() && parentPath.node === grandparentPath.node.left || grandparentPath.isLVal() || grandparentPath.isForXStatement() || grandparentPath.isUpdateExpression() || grandparentPath.isUnaryExpression({ operator: "delete" }) || (grandparentPath.isCallExpression() || grandparentPath.isNewExpression()) && parentPath.node === grandparentPath.node.callee);
+
+        if (argsOptEligible) {
+          if (parentPath.node.computed) {
+            if (parentPath.get("property").isBaseType("number")) {
+              state.candidates.push({ cause: "indexGetter", path: path });
+              return;
+            }
+          } else if (parentPath.node.property.name === "length") {
+              state.candidates.push({ cause: "lengthGetter", path: path });
+              return;
+            }
+        }
+      }
+
+      if (state.offset === 0 && parentPath.isSpreadElement()) {
+        var call = parentPath.parentPath;
+        if (call.isCallExpression() && call.node.arguments.length === 1) {
+          state.candidates.push({ cause: "argSpread", path: path });
+          return;
+        }
+      }
+
+      state.references.push(path);
+    }
+  },
+  BindingIdentifier: function BindingIdentifier(_ref, state) {
+    var node = _ref.node;
+
+    if (node.name === state.name) {
+      state.deopted = true;
+    }
+  }
+};
+function hasRest(node) {
+  return t.isRestElement(node.params[node.params.length - 1]);
+}
+
+function optimiseIndexGetter(path, argsId, offset) {
+  var index = void 0;
+
+  if (t.isNumericLiteral(path.parent.property)) {
+    index = t.numericLiteral(path.parent.property.value + offset);
+  } else if (offset === 0) {
+    index = path.parent.property;
+  } else {
+    index = t.binaryExpression("+", path.parent.property, t.numericLiteral(offset));
+  }
+
+  var scope = path.scope;
+
+  if (!scope.isPure(index)) {
+    var temp = scope.generateUidIdentifierBasedOnNode(index);
+    scope.push({ id: temp, kind: "var" });
+    path.parentPath.replaceWith(restIndexImpure({
+      ARGUMENTS: argsId,
+      INDEX: index,
+      REF: temp
+    }));
+  } else {
+    path.parentPath.replaceWith(restIndex({
+      ARGUMENTS: argsId,
+      INDEX: index
+    }));
+  }
+}
+
+function optimiseLengthGetter(path, argsId, offset) {
+  if (offset) {
+    path.parentPath.replaceWith(restLength({
+      ARGUMENTS: argsId,
+      OFFSET: t.numericLiteral(offset)
+    }));
+  } else {
+    path.replaceWith(argsId);
+  }
+}
+
+var visitor = exports.visitor = {
+  Function: function Function(path) {
+    var node = path.node,
+        scope = path.scope;
+
+    if (!hasRest(node)) return;
+
+    var rest = node.params.pop().argument;
+
+    var argsId = t.identifier("arguments");
+
+    argsId._shadowedFunctionLiteral = path;
+
+    var state = {
+      references: [],
+      offset: node.params.length,
+
+      argumentsNode: argsId,
+      outerBinding: scope.getBindingIdentifier(rest.name),
+
+      candidates: [],
+
+      name: rest.name,
+
+      deopted: false
+    };
+
+    path.traverse(memberExpressionOptimisationVisitor, state);
+
+    if (!state.deopted && !state.references.length) {
+      for (var _iterator = state.candidates, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
+        var _ref3;
+
+        if (_isArray) {
+          if (_i >= _iterator.length) break;
+          _ref3 = _iterator[_i++];
+        } else {
+          _i = _iterator.next();
+          if (_i.done) break;
+          _ref3 = _i.value;
+        }
+
+        var _ref4 = _ref3;
+        var _path = _ref4.path,
+            cause = _ref4.cause;
+
+        switch (cause) {
+          case "indexGetter":
+            optimiseIndexGetter(_path, argsId, state.offset);
+            break;
+          case "lengthGetter":
+            optimiseLengthGetter(_path, argsId, state.offset);
+            break;
+          default:
+            _path.replaceWith(argsId);
+        }
+      }
+      return;
+    }
+
+    state.references = state.references.concat(state.candidates.map(function (_ref5) {
+      var path = _ref5.path;
+      return path;
+    }));
+
+    state.deopted = state.deopted || !!node.shadow;
+
+    var start = t.numericLiteral(node.params.length);
+    var key = scope.generateUidIdentifier("key");
+    var len = scope.generateUidIdentifier("len");
+
+    var arrKey = key;
+    var arrLen = len;
+    if (node.params.length) {
+      arrKey = t.binaryExpression("-", key, start);
+
+      arrLen = t.conditionalExpression(t.binaryExpression(">", len, start), t.binaryExpression("-", len, start), t.numericLiteral(0));
+    }
+
+    var loop = buildRest({
+      ARGUMENTS: argsId,
+      ARRAY_KEY: arrKey,
+      ARRAY_LEN: arrLen,
+      START: start,
+      ARRAY: rest,
+      KEY: key,
+      LEN: len
+    });
+
+    if (state.deopted) {
+      loop._blockHoist = node.params.length + 1;
+      node.body.body.unshift(loop);
+    } else {
+      loop._blockHoist = 1;
+
+      var target = path.getEarliestCommonAncestorFrom(state.references).getStatementParent();
+
+      target.findParent(function (path) {
+        if (path.isLoop()) {
+          target = path;
+        } else {
+          return path.isFunction();
+        }
+      });
+
+      target.insertBefore(loop);
+    }
+  }
+};
\ No newline at end of file