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Canonical code style linter and formatter for JavaScript, SCSS, CSS and JSON.

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(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.babylon = f()}})(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);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.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){ "use strict"; var _interopRequireDefault = require("babel-runtime/helpers/interop-require-default")["default"]; exports.__esModule = true; exports.parse = parse; var _parser = require("./parser"); var _parser2 = _interopRequireDefault(_parser); require("./parser/util"); require("./parser/statement"); require("./parser/lval"); require("./parser/expression"); require("./parser/node"); require("./parser/location"); require("./parser/comments"); var _tokenizerTypes = require("./tokenizer/types"); require("./tokenizer"); require("./tokenizer/context"); var _pluginsFlow = require("./plugins/flow"); var _pluginsFlow2 = _interopRequireDefault(_pluginsFlow); var _pluginsJsx = require("./plugins/jsx"); var _pluginsJsx2 = _interopRequireDefault(_pluginsJsx); _parser.plugins.flow = _pluginsFlow2["default"]; _parser.plugins.jsx = _pluginsJsx2["default"]; function parse(input, options) { return new _parser2["default"](options, input).parse(); } exports.tokTypes = _tokenizerTypes.types; },{"./parser":5,"./parser/comments":3,"./parser/expression":4,"./parser/location":6,"./parser/lval":7,"./parser/node":8,"./parser/statement":9,"./parser/util":10,"./plugins/flow":11,"./plugins/jsx":12,"./tokenizer":15,"./tokenizer/context":14,"./tokenizer/types":17,"babel-runtime/helpers/interop-require-default":26}],2:[function(require,module,exports){ /* @flow */ // A second optional argument can be given to further configure "use strict"; exports.__esModule = true; exports.getOptions = getOptions; var defaultOptions /*: { sourceType: string, allowReturnOutsideFunction: boolean, allowImportExportEverywhere: boolean, allowSuperOutsideMethod: boolean, plugins: Array<string>, strictMode: any }*/ = { // Source type ("script" or "module") for different semantics sourceType: "script", // When enabled, a return at the top level is not considered an // error. allowReturnOutsideFunction: false, // When enabled, import/export statements are not constrained to // appearing at the top of the program. allowImportExportEverywhere: false, // TODO allowSuperOutsideMethod: false, // An array of plugins to enable plugins: [], // TODO strictMode: null }; exports.defaultOptions = defaultOptions; // Interpret and default an options object function getOptions(opts /*:: ?: Object*/) /*: Object*/ { var options = {}; for (var key in defaultOptions) { options[key] = opts && key in opts ? opts[key] : defaultOptions[key]; } return options; } // the parser process. These options are recognized: },{}],3:[function(require,module,exports){ /* @flow */ /** * Based on the comment attachment algorithm used in espree and estraverse. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ "use strict"; var _interopRequireDefault = require("babel-runtime/helpers/interop-require-default")["default"]; var _index = require("./index"); var _index2 = _interopRequireDefault(_index); function last(stack) { return stack[stack.length - 1]; } var pp = _index2["default"].prototype; pp.addComment = function (comment) { this.state.trailingComments.push(comment); this.state.leadingComments.push(comment); }; pp.processComment = function (node) { if (node.type === "Program" && node.body.length > 0) return; var stack = this.state.commentStack; var lastChild = undefined, trailingComments = undefined, i = undefined; if (this.state.trailingComments.length > 0) { // If the first comment in trailingComments comes after the // current node, then we're good - all comments in the array will // come after the node and so it's safe to add them as official // trailingComments. if (this.state.trailingComments[0].start >= node.end) { trailingComments = this.state.trailingComments; this.state.trailingComments = []; } else { // Otherwise, if the first comment doesn't come after the // current node, that means we have a mix of leading and trailing // comments in the array and that leadingComments contains the // same items as trailingComments. Reset trailingComments to // zero items and we'll handle this by evaluating leadingComments // later. this.state.trailingComments.length = 0; } } else { var lastInStack = last(stack); if (stack.length > 0 && lastInStack.trailingComments && lastInStack.trailingComments[0].start >= node.end) { trailingComments = lastInStack.trailingComments; lastInStack.trailingComments = null; } } // Eating the stack. while (stack.length > 0 && last(stack).start >= node.start) { lastChild = stack.pop(); } if (lastChild) { if (lastChild.leadingComments) { if (lastChild !== node && last(lastChild.leadingComments).end <= node.start) { node.leadingComments = lastChild.leadingComments; lastChild.leadingComments = null; } else { // A leading comment for an anonymous class had been stolen by its first ClassMethod, // so this takes back the leading comment. // See also: https://github.com/eslint/espree/issues/158 for (i = lastChild.leadingComments.length - 2; i >= 0; --i) { if (lastChild.leadingComments[i].end <= node.start) { node.leadingComments = lastChild.leadingComments.splice(0, i + 1); break; } } } } } else if (this.state.leadingComments.length > 0) { if (last(this.state.leadingComments).end <= node.start) { node.leadingComments = this.state.leadingComments; this.state.leadingComments = []; } else { // https://github.com/eslint/espree/issues/2 // // In special cases, such as return (without a value) and // debugger, all comments will end up as leadingComments and // will otherwise be eliminated. This step runs when the // commentStack is empty and there are comments left // in leadingComments. // // This loop figures out the stopping point between the actual // leading and trailing comments by finding the location of the // first comment that comes after the given node. for (i = 0; i < this.state.leadingComments.length; i++) { if (this.state.leadingComments[i].end > node.start) { break; } } // Split the array based on the location of the first comment // that comes after the node. Keep in mind that this could // result in an empty array, and if so, the array must be // deleted. node.leadingComments = this.state.leadingComments.slice(0, i); if ((node.leadingComments /*: Array<any>*/).length === 0) { node.leadingComments = null; } // Similarly, trailing comments are attached later. The variable // must be reset to null if there are no trailing comments. trailingComments = this.state.leadingComments.slice(i); if (trailingComments.length === 0) { trailingComments = null; } } } if (trailingComments) { if (trailingComments.length && trailingComments[0].start >= node.start && last(trailingComments).end <= node.end) { node.innerComments = trailingComments; } else { node.trailingComments = trailingComments; } } stack.push(node); }; },{"./index":5,"babel-runtime/helpers/interop-require-default":26}],4:[function(require,module,exports){ // A recursive descent parser operates by defining functions for all // syntactic elements, and recursively calling those, each function // advancing the input stream and returning an AST node. Precedence // of constructs (for example, the fact that `!x[1]` means `!(x[1])` // instead of `(!x)[1]` is handled by the fact that the parser // function that parses unary prefix operators is called first, and // in turn calls the function that parses `[]` subscripts — that // way, it'll receive the node for `x[1]` already parsed, and wraps // *that* in the unary operator node. // // Acorn uses an [operator precedence parser][opp] to handle binary // operator precedence, because it is much more compact than using // the technique outlined above, which uses different, nesting // functions to specify precedence, for all of the ten binary // precedence levels that JavaScript defines. // // [opp]: http://en.wikipedia.org/wiki/Operator-precedence_parser "use strict"; var _Object$create = require("babel-runtime/core-js/object/create")["default"]; var _getIterator = require("babel-runtime/core-js/get-iterator")["default"]; var _interopRequireDefault = require("babel-runtime/helpers/interop-require-default")["default"]; var _tokenizerTypes = require("../tokenizer/types"); var _index = require("./index"); var _index2 = _interopRequireDefault(_index); var _utilIdentifier = require("../util/identifier"); var pp = _index2["default"].prototype; // Check if property name clashes with already added. // Object/class getters and setters are not allowed to clash — // either with each other or with an init property — and in // strict mode, init properties are also not allowed to be repeated. pp.checkPropClash = function (prop, propHash) { if (prop.computed) return; var key = prop.key; var name = undefined; switch (key.type) { case "Identifier": name = key.name; break; case "StringLiteral": case "NumericLiteral": name = String(key.value); break; default: return; } if (name === "__proto__" && prop.kind === "init") { if (propHash.proto) this.raise(key.start, "Redefinition of __proto__ property"); propHash.proto = true; } }; // ### Expression parsing // These nest, from the most general expression type at the top to // 'atomic', nondivisible expression types at the bottom. Most of // the functions will simply let the function (s) below them parse, // and, *if* the syntactic construct they handle is present, wrap // the AST node that the inner parser gave them in another node. // Parse a full expression. The optional arguments are used to // forbid the `in` operator (in for loops initalization expressions) // and provide reference for storing '=' operator inside shorthand // property assignment in contexts where both object expression // and object pattern might appear (so it's possible to raise // delayed syntax error at correct position). pp.parseExpression = function (noIn, refShorthandDefaultPos) { var startPos = this.state.start, startLoc = this.state.startLoc; var expr = this.parseMaybeAssign(noIn, refShorthandDefaultPos); if (this.match(_tokenizerTypes.types.comma)) { var node = this.startNodeAt(startPos, startLoc); node.expressions = [expr]; while (this.eat(_tokenizerTypes.types.comma)) { node.expressions.push(this.parseMaybeAssign(noIn, refShorthandDefaultPos)); } this.toReferencedList(node.expressions); return this.finishNode(node, "SequenceExpression"); } return expr; }; // Parse an assignment expression. This includes applications of // operators like `+=`. pp.parseMaybeAssign = function (noIn, refShorthandDefaultPos, afterLeftParse) { if (this.match(_tokenizerTypes.types._yield) && this.state.inGenerator) { return this.parseYield(); } var failOnShorthandAssign = undefined; if (refShorthandDefaultPos) { failOnShorthandAssign = false; } else { refShorthandDefaultPos = { start: 0 }; failOnShorthandAssign = true; } var startPos = this.state.start; var startLoc = this.state.startLoc; if (this.match(_tokenizerTypes.types.parenL) || this.match(_tokenizerTypes.types.name)) { this.state.potentialArrowAt = this.state.start; } var left = this.parseMaybeConditional(noIn, refShorthandDefaultPos); if (afterLeftParse) left = afterLeftParse.call(this, left, startPos, startLoc); if (this.state.type.isAssign) { var node = this.startNodeAt(startPos, startLoc); node.operator = this.state.value; node.left = this.match(_tokenizerTypes.types.eq) ? this.toAssignable(left) : left; refShorthandDefaultPos.start = 0; // reset because shorthand default was used correctly this.checkLVal(left); if (left.extra && left.extra.parenthesized) { var errorMsg = undefined; if (left.type === "ObjectPattern") { errorMsg = "`({a}) = 0` use `({a} = 0)`"; } else if (left.type === "ArrayPattern") { errorMsg = "`([a]) = 0` use `([a] = 0)`"; } if (errorMsg) { this.raise(left.start, "You're trying to assign to a parenthesized expression, eg. instead of " + errorMsg); } } this.next(); node.right = this.parseMaybeAssign(noIn); return this.finishNode(node, "AssignmentExpression"); } else if (failOnShorthandAssign && refShorthandDefaultPos.start) { this.unexpected(refShorthandDefaultPos.start); } return left; }; // Parse a ternary conditional (`?:`) operator. pp.parseMaybeConditional = function (noIn, refShorthandDefaultPos) { var startPos = this.state.start, startLoc = this.state.startLoc; var expr = this.parseExprOps(noIn, refShorthandDefaultPos); if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr; if (this.eat(_tokenizerTypes.types.question)) { var node = this.startNodeAt(startPos, startLoc); node.test = expr; node.consequent = this.parseMaybeAssign(); this.expect(_tokenizerTypes.types.colon); node.alternate = this.parseMaybeAssign(noIn); return this.finishNode(node, "ConditionalExpression"); } return expr; }; // Start the precedence parser. pp.parseExprOps = function (noIn, refShorthandDefaultPos) { var startPos = this.state.start, startLoc = this.state.startLoc; var expr = this.parseMaybeUnary(refShorthandDefaultPos); if (refShorthandDefaultPos && refShorthandDefaultPos.start) { return expr; } else { return this.parseExprOp(expr, startPos, startLoc, -1, noIn); } }; // Parse binary operators with the operator precedence parsing // algorithm. `left` is the left-hand side of the operator. // `minPrec` provides context that allows the function to stop and // defer further parser to one of its callers when it encounters an // operator that has a lower precedence than the set it is parsing. pp.parseExprOp = function (left, leftStartPos, leftStartLoc, minPrec, noIn) { var prec = this.state.type.binop; if (prec != null && (!noIn || !this.match(_tokenizerTypes.types._in))) { if (prec > minPrec) { var node = this.startNodeAt(leftStartPos, leftStartLoc); node.left = left; node.operator = this.state.value; if (node.operator === "**" && left.type === "UnaryExpression" && left.extra && !left.extra.parenthesizedArgument) { this.raise(left.argument.start, "Illegal expression. Wrap left hand side or entire exponentiation in parentheses."); } var op = this.state.type; this.next(); var startPos = this.state.start; var startLoc = this.state.startLoc; node.right = this.parseExprOp(this.parseMaybeUnary(), startPos, startLoc, op.rightAssociative ? prec - 1 : prec, noIn); this.finishNode(node, op === _tokenizerTypes.types.logicalOR || op === _tokenizerTypes.types.logicalAND ? "LogicalExpression" : "BinaryExpression"); return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec, noIn); } } return left; }; // Parse unary operators, both prefix and postfix. pp.parseMaybeUnary = function (refShorthandDefaultPos) { if (this.state.type.prefix) { var node = this.startNode(); var update = this.match(_tokenizerTypes.types.incDec); node.operator = this.state.value; node.prefix = true; this.next(); var argType = this.state.type; this.addExtra(node, "parenthesizedArgument", argType === _tokenizerTypes.types.parenL); node.argument = this.parseMaybeUnary(); if (refShorthandDefaultPos && refShorthandDefaultPos.start) { this.unexpected(refShorthandDefaultPos.start); } if (update) { this.checkLVal(node.argument); } else if (this.state.strict && node.operator === "delete" && node.argument.type === "Identifier") { this.raise(node.start, "Deleting local variable in strict mode"); } return this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression"); } var startPos = this.state.start, startLoc = this.state.startLoc; var expr = this.parseExprSubscripts(refShorthandDefaultPos); if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr; while (this.state.type.postfix && !this.canInsertSemicolon()) { var node = this.startNodeAt(startPos, startLoc); node.operator = this.state.value; node.prefix = false; node.argument = expr; this.checkLVal(expr); this.next(); expr = this.finishNode(node, "UpdateExpression"); } return expr; }; // Parse call, dot, and `[]`-subscript expressions. pp.parseExprSubscripts = function (refShorthandDefaultPos) { var startPos = this.state.start, startLoc = this.state.startLoc; var potentialArrowAt = this.state.potentialArrowAt; var expr = this.parseExprAtom(refShorthandDefaultPos); if (expr.type === "ArrowFunctionExpression" && expr.start === potentialArrowAt) { return expr; } if (refShorthandDefaultPos && refShorthandDefaultPos.start) { return expr; } return this.parseSubscripts(expr, startPos, startLoc); }; pp.parseSubscripts = function (base, startPos, startLoc, noCalls) { for (;;) { if (!noCalls && this.eat(_tokenizerTypes.types.doubleColon)) { var node = this.startNodeAt(startPos, startLoc); node.object = base; node.callee = this.parseNoCallExpr(); return this.parseSubscripts(this.finishNode(node, "BindExpression"), startPos, startLoc, noCalls); } else if (this.eat(_tokenizerTypes.types.dot)) { var node = this.startNodeAt(startPos, startLoc); node.object = base; node.property = this.parseIdentifier(true); node.computed = false; base = this.finishNode(node, "MemberExpression"); } else if (this.eat(_tokenizerTypes.types.bracketL)) { var node = this.startNodeAt(startPos, startLoc); node.object = base; node.property = this.parseExpression(); node.computed = true; this.expect(_tokenizerTypes.types.bracketR); base = this.finishNode(node, "MemberExpression"); } else if (!noCalls && this.match(_tokenizerTypes.types.parenL)) { var possibleAsync = this.state.potentialArrowAt === base.start && base.type === "Identifier" && base.name === "async" && !this.canInsertSemicolon(); this.next(); var node = this.startNodeAt(startPos, startLoc); node.callee = base; node.arguments = this.parseCallExpressionArguments(_tokenizerTypes.types.parenR, this.hasPlugin("trailingFunctionCommas"), possibleAsync); base = this.finishNode(node, "CallExpression"); if (possibleAsync && this.shouldParseAsyncArrow()) { return this.parseAsyncArrowFromCallExpression(this.startNodeAt(startPos, startLoc), node); } else { this.toReferencedList(node.arguments); } } else if (this.match(_tokenizerTypes.types.backQuote)) { var node = this.startNodeAt(startPos, startLoc); node.tag = base; node.quasi = this.parseTemplate(); base = this.finishNode(node, "TaggedTemplateExpression"); } else { return base; } } }; pp.parseCallExpressionArguments = function (close, allowTrailingComma, possibleAsyncArrow) { var innerParenStart = undefined; var elts = [], first = true; while (!this.eat(close)) { if (first) { first = false; } else { this.expect(_tokenizerTypes.types.comma); if (allowTrailingComma && this.eat(close)) break; } // we need to make sure that if this is an async arrow functions, that we don't allow inner parens inside the params if (this.match(_tokenizerTypes.types.parenL) && !innerParenStart) { innerParenStart = this.state.start; } elts.push(this.parseExprListItem()); } // we found an async arrow function so let's not allow any inner parens if (possibleAsyncArrow && innerParenStart && this.shouldParseAsyncArrow()) { this.unexpected(); } return elts; }; pp.shouldParseAsyncArrow = function () { return this.match(_tokenizerTypes.types.arrow); }; pp.parseAsyncArrowFromCallExpression = function (node, call) { if (!this.hasPlugin("asyncFunctions")) this.unexpected(); this.expect(_tokenizerTypes.types.arrow); return this.parseArrowExpression(node, call.arguments, true); }; // Parse a no-call expression (like argument of `new` or `::` operators). pp.parseNoCallExpr = function () { var startPos = this.state.start, startLoc = this.state.startLoc; return this.parseSubscripts(this.parseExprAtom(), startPos, startLoc, true); }; // Parse an atomic expression — either a single token that is an // expression, an expression started by a keyword like `function` or // `new`, or an expression wrapped in punctuation like `()`, `[]`, // or `{}`. pp.parseExprAtom = function (refShorthandDefaultPos) { var node = undefined, canBeArrow = this.state.potentialArrowAt === this.state.start; switch (this.state.type) { case _tokenizerTypes.types._super: if (!this.state.inMethod && !this.options.allowSuperOutsideMethod) { this.raise(this.state.start, "'super' outside of function or class"); } node = this.startNode(); this.next(); if (!this.match(_tokenizerTypes.types.parenL) && !this.match(_tokenizerTypes.types.bracketL) && !this.match(_tokenizerTypes.types.dot)) { this.unexpected(); } if (this.match(_tokenizerTypes.types.parenL) && this.state.inMethod !== "constructor" && !this.options.allowSuperOutsideMethod) { this.raise(node.start, "super() outside of class constructor"); } return this.finishNode(node, "Super"); case _tokenizerTypes.types._this: node = this.startNode(); this.next(); return this.finishNode(node, "ThisExpression"); case _tokenizerTypes.types._yield: if (this.state.inGenerator) this.unexpected(); case _tokenizerTypes.types.name: node = this.startNode(); var allowAwait = this.hasPlugin("asyncFunctions") && this.state.value === "await" && this.state.inAsync; var allowYield = this.shouldAllowYieldIdentifier(); var id = this.parseIdentifier(allowAwait || allowYield); if (this.hasPlugin("asyncFunctions")) { if (id.name === "await") { if (this.state.inAsync || this.inModule) { return this.parseAwait(node); } } else if (id.name === "async" && this.match(_tokenizerTypes.types._function) && !this.canInsertSemicolon()) { this.next(); return this.parseFunction(node, false, false, true); } else if (canBeArrow && id.name === "async" && this.match(_tokenizerTypes.types.name)) { var params = [this.parseIdentifier()]; this.expect(_tokenizerTypes.types.arrow); // let foo = bar => {}; return this.parseArrowExpression(node, params, true); } } if (canBeArrow && !this.canInsertSemicolon() && this.eat(_tokenizerTypes.types.arrow)) { return this.parseArrowExpression(node, [id]); } return id; case _tokenizerTypes.types._do: if (this.hasPlugin("doExpressions")) { var _node = this.startNode(); this.next(); var oldInFunction = this.state.inFunction; var oldLabels = this.state.labels; this.state.labels = []; this.state.inFunction = false; _node.body = this.parseBlock(false, true); this.state.inFunction = oldInFunction; this.state.labels = oldLabels; return this.finishNode(_node, "DoExpression"); } case _tokenizerTypes.types.regexp: var value = this.state.value; node = this.parseLiteral(value.value, "RegExpLiteral"); node.pattern = value.pattern; node.flags = value.flags; return node; case _tokenizerTypes.types.num: return this.parseLiteral(this.state.value, "NumericLiteral"); case _tokenizerTypes.types.string: return this.parseLiteral(this.state.value, "StringLiteral"); case _tokenizerTypes.types._null: node = this.startNode(); this.next(); return this.finishNode(node, "NullLiteral"); case _tokenizerTypes.types._true:case _tokenizerTypes.types._false: node = this.startNode(); node.value = this.match(_tokenizerTypes.types._true); this.next(); return this.finishNode(node, "BooleanLiteral"); case _tokenizerTypes.types.parenL: return this.parseParenAndDistinguishExpression(null, null, canBeArrow); case _tokenizerTypes.types.bracketL: node = this.startNode(); this.next(); node.elements = this.parseExprList(_tokenizerTypes.types.bracketR, true, true, refShorthandDefaultPos); this.toReferencedList(node.elements); return this.finishNode(node, "ArrayExpression"); case _tokenizerTypes.types.braceL: return this.parseObj(false, refShorthandDefaultPos); case _tokenizerTypes.types._function: return this.parseFunctionExpression(); case _tokenizerTypes.types.at: this.parseDecorators(); case _tokenizerTypes.types._class: node = this.startNode(); this.takeDecorators(node); return this.parseClass(node, false); case _tokenizerTypes.types._new: return this.parseNew(); case _tokenizerTypes.types.backQuote: return this.parseTemplate(); case _tokenizerTypes.types.doubleColon: node = this.startNode(); this.next(); node.object = null; var callee = node.callee = this.parseNoCallExpr(); if (callee.type === "MemberExpression") { return this.finishNode(node, "BindExpression"); } else { this.raise(callee.start, "Binding should be performed on object property."); } default: this.unexpected(); } }; pp.parseFunctionExpression = function () { var node = this.startNode(); var meta = this.parseIdentifier(true); if (this.state.inGenerator && this.eat(_tokenizerTypes.types.dot) && this.hasPlugin("functionSent")) { return this.parseMetaProperty(node, meta, "sent"); } else { return this.parseFunction(node, false); } }; pp.parseMetaProperty = function (node, meta, propertyName) { node.meta = meta; node.property = this.parseIdentifier(true); if (node.property.name !== propertyName) { this.raise(node.property.start, "The only valid meta property for new is " + meta.name + "." + propertyName); } return this.finishNode(node, "MetaProperty"); }; pp.parseLiteral = function (value, type) { var node = this.startNode(); this.addExtra(node, "rawValue", value); this.addExtra(node, "raw", this.input.slice(this.state.start, this.state.end)); node.value = value; this.next(); return this.finishNode(node, type); }; pp.parseParenExpression = function () { this.expect(_tokenizerTypes.types.parenL); var val = this.parseExpression(); this.expect(_tokenizerTypes.types.parenR); return val; }; pp.parseParenAndDistinguishExpression = function (startPos, startLoc, canBeArrow, isAsync, allowOptionalCommaStart) { startPos = startPos || this.state.start; startLoc = startLoc || this.state.startLoc; var val = undefined; this.next(); var innerStartPos = this.state.start, innerStartLoc = this.state.startLoc; var exprList = [], first = true; var refShorthandDefaultPos = { start: 0 }, spreadStart = undefined, optionalCommaStart = undefined; while (!this.match(_tokenizerTypes.types.parenR)) { if (first) { first = false; } else { this.expect(_tokenizerTypes.types.comma); if (this.match(_tokenizerTypes.types.parenR) && this.hasPlugin("trailingFunctionCommas")) { optionalCommaStart = this.state.start; break; } } if (this.match(_tokenizerTypes.types.ellipsis)) { var spreadNodeStartPos = this.state.start, spreadNodeStartLoc = this.state.startLoc; spreadStart = this.state.start; exprList.push(this.parseParenItem(this.parseRest(), spreadNodeStartLoc, spreadNodeStartPos)); break; } else { exprList.push(this.parseMaybeAssign(false, refShorthandDefaultPos, this.parseParenItem)); } } var innerEndPos = this.state.start; var innerEndLoc = this.state.startLoc; this.expect(_tokenizerTypes.types.parenR); if (canBeArrow && !this.canInsertSemicolon() && this.eat(_tokenizerTypes.types.arrow)) { for (var _i = 0; _i < exprList.length; _i++) { var param = exprList[_i]; if (param.extra && param.extra.parenthesized) this.unexpected(param.extra.parenStart); } return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), exprList, isAsync); } if (!exprList.length) { if (isAsync) { return; } else { this.unexpected(this.state.lastTokStart); } } if (optionalCommaStart && !allowOptionalCommaStart) this.unexpected(optionalCommaStart); if (spreadStart) this.unexpected(spreadStart); if (refShorthandDefaultPos.start) this.unexpected(refShorthandDefaultPos.start); if (exprList.length > 1) { val = this.startNodeAt(innerStartPos, innerStartLoc); val.expressions = exprList; this.toReferencedList(val.expressions); this.finishNodeAt(val, "SequenceExpression", innerEndPos, innerEndLoc); } else { val = exprList[0]; } this.addExtra(val, "parenthesized", true); this.addExtra(val, "parenStart", startPos); return val; }; pp.parseParenItem = function (node) { return node; }; // New's precedence is slightly tricky. It must allow its argument // to be a `[]` or dot subscript expression, but not a call — at // least, not without wrapping it in parentheses. Thus, it uses the pp.parseNew = function () { var node = this.startNode(); var meta = this.parseIdentifier(true); if (this.eat(_tokenizerTypes.types.dot)) { return this.parseMetaProperty(node, meta, "target"); } node.callee = this.parseNoCallExpr(); if (this.eat(_tokenizerTypes.types.parenL)) { node.arguments = this.parseExprList(_tokenizerTypes.types.parenR, this.hasPlugin("trailingFunctionCommas")); this.toReferencedList(node.arguments); } else { node.arguments = []; } return this.finishNode(node, "NewExpression"); }; // Parse template expression. pp.parseTemplateElement = function () { var elem = this.startNode(); elem.value = { raw: this.input.slice(this.state.start, this.state.end).replace(/\r\n?/g, "\n"), cooked: this.state.value }; this.next(); elem.tail = this.match(_tokenizerTypes.types.backQuote); return this.finishNode(elem, "TemplateElement"); }; pp.parseTemplate = function () { var node = this.startNode(); this.next(); node.expressions = []; var curElt = this.parseTemplateElement(); node.quasis = [curElt]; while (!curElt.tail) { this.expect(_tokenizerTypes.types.dollarBraceL); node.expressions.push(this.parseExpression()); this.expect(_tokenizerTypes.types.braceR); node.quasis.push(curElt = this.parseTemplateElement()); } this.next(); return this.finishNode(node, "TemplateLiteral"); }; // Parse an object literal or binding pattern. pp.parseObj = function (isPattern, refShorthandDefaultPos) { var decorators = []; var propHash = _Object$create(null); var first = true; var node = this.startNode(); node.properties = []; this.next(); while (!this.eat(_tokenizerTypes.types.braceR)) { if (first) { first = false; } else { this.expect(_tokenizerTypes.types.comma); if (this.eat(_tokenizerTypes.types.braceR)) break; } while (this.match(_tokenizerTypes.types.at)) { decorators.push(this.parseDecorator()); } var prop = this.startNode(), isGenerator = false, isAsync = false, startPos = undefined, startLoc = undefined; if (decorators.length) { prop.decorators = decorators; decorators = []; } if (this.hasPlugin("objectRestSpread") && this.match(_tokenizerTypes.types.ellipsis)) { prop = this.parseSpread(); prop.type = isPattern ? "RestProperty" : "SpreadProperty"; node.properties.push(prop); continue; } prop.method = false; prop.shorthand = false; if (isPattern || refShorthandDefaultPos) { startPos = this.state.start; startLoc = this.state.startLoc; } if (!isPattern) { isGenerator = this.eat(_tokenizerTypes.types.star); } if (!isPattern && this.hasPlugin("asyncFunctions") && this.isContextual("async")) { if (isGenerator) this.unexpected(); var asyncId = this.parseIdentifier(); if (this.match(_tokenizerTypes.types.colon) || this.match(_tokenizerTypes.types.parenL) || this.match(_tokenizerTypes.types.braceR)) { prop.key = asyncId; } else { isAsync = true; if (this.hasPlugin("asyncGenerators")) isGenerator = this.eat(_tokenizerTypes.types.star); this.parsePropertyName(prop); } } else { this.parsePropertyName(prop); } this.parseObjPropValue(prop, startPos, startLoc, isGenerator, isAsync, isPattern, refShorthandDefaultPos); this.checkPropClash(prop, propHash); if (prop.shorthand) { this.addExtra(prop, "shorthand", true); } node.properties.push(prop); } if (decorators.length) { this.raise(this.state.start, "You have trailing decorators with no property"); } return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression"); }; pp.parseObjPropValue = function (prop, startPos, startLoc, isGenerator, isAsync, isPattern, refShorthandDefaultPos) { if (isAsync || isGenerator || this.match(_tokenizerTypes.types.parenL)) { if (isPattern) this.unexpected(); prop.kind = "method"; prop.method = true; this.parseMethod(prop, isGenerator, isAsync); return this.finishNode(prop, "ObjectMethod"); } if (this.eat(_tokenizerTypes.types.colon)) { prop.value = isPattern ? this.parseMaybeDefault(this.state.start, this.state.startLoc) : this.parseMaybeAssign(false, refShorthandDefaultPos); return this.finishNode(prop, "ObjectProperty"); } if (!prop.computed && prop.key.type === "Identifier" && (prop.key.name === "get" || prop.key.name === "set") && !this.match(_tokenizerTypes.types.comma) && !this.match(_tokenizerTypes.types.braceR)) { if (isGenerator || isAsync || isPattern) this.unexpected(); prop.kind = prop.key.name; this.parsePropertyName(prop); this.parseMethod(prop, false); var paramCount = prop.kind === "get" ? 0 : 1; if (prop.params.length !== paramCount) { var start = prop.start; if (prop.kind === "get") { this.raise(start, "getter should have no params"); } else { this.raise(start, "setter should have exactly one param"); } } return this.finishNode(prop, "ObjectMethod"); } if (!prop.computed && prop.key.type === "Identifier") { if (isPattern) { var illegalBinding = this.isKeyword(prop.key.name); if (!illegalBinding && this.state.strict) { illegalBinding = _utilIdentifier.reservedWords.strictBind(prop.key.name) || _utilIdentifier.reservedWords.strict(prop.key.name); } if (illegalBinding) { this.raise(prop.key.start, "Binding " + prop.key.name); } prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key.__clone()); } else if (this.match(_tokenizerTypes.types.eq) && refShorthandDefaultPos) { if (!refShorthandDefaultPos.start) { refShorthandDefaultPos.start = this.state.start; } prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key.__clone()); } else { prop.value = prop.key.__clone(); } prop.shorthand = true; return this.finishNode(prop, "ObjectProperty"); } this.unexpected(); }; pp.parsePropertyName = function (prop) { if (this.eat(_tokenizerTypes.types.bracketL)) { prop.computed = true; prop.key = this.parseMaybeAssign(); this.expect(_tokenizerTypes.types.bracketR); return prop.key; } else { prop.computed = false; return prop.key = this.match(_tokenizerTypes.types.num) || this.match(_tokenizerTypes.types.string) ? this.parseExprAtom() : this.parseIdentifier(true); } }; // Initialize empty function node. pp.initFunction = function (node, isAsync) { node.id = null; node.generator = false; node.expression = false; if (this.hasPlugin("asyncFunctions")) { node.async = !!isAsync; } }; // Parse object or class method. pp.parseMethod = function (node, isGenerator, isAsync) { var oldInMethod = this.state.inMethod; this.state.inMethod = node.kind || true; this.initFunction(node, isAsync); this.expect(_tokenizerTypes.types.parenL); node.params = this.parseBindingList(_tokenizerTypes.types.parenR, false, this.hasPlugin("trailingFunctionCommas")); node.generator = isGenerator; this.parseFunctionBody(node); this.state.inMethod = oldInMethod; return node; }; // Parse arrow function expression with given parameters. pp.parseArrowExpression = function (node, params, isAsync) { this.initFunction(node, isAsync); node.params = this.toAssignableList(params, true); this.parseFunctionBody(node, true); return this.finishNode(node, "ArrowFunctionExpression"); }; // Parse function body and check parameters. pp.parseFunctionBody = function (node, allowExpression) { var isExpression = allowExpression && !this.match(_tokenizerTypes.types.braceL); var oldInAsync = this.state.inAsync; this.state.inAsync = node.async; if (isExpression) { node.body = this.parseMaybeAssign(); node.expression = true; } else { // Start a new scope with regard to labels and the `inFunction` // flag (restore them to their old value afterwards). var oldInFunc = this.state.inFunction, oldInGen = this.state.inGenerator, oldLabels = this.state.labels; this.state.inFunction = true;this.state.inGenerator = node.generator;this.state.labels = []; node.body = this.parseBlock(true); node.expression = false; this.state.inFunction = oldInFunc;this.state.inGenerator = oldInGen;this.state.labels = oldLabels; } this.state.inAsync = oldInAsync; // If this is a strict mode function, verify that argument names // are not repeated, and it does not try to bind the words `eval` // or `arguments`. var checkLVal = this.state.strict; var checkLValStrict = false; var isStrict = false; // arrow function if (allowExpression) checkLVal = true; // normal function if (!isExpression && node.body.directives.length) { for (var _iterator = (node.body.directives /*: Array<Object>*/), _isArray = Array.isArray(_iterator), _i2 = 0, _iterator = _isArray ? _iterator : _getIterator(_iterator);;) { var _ref; if (_isArray) { if (_i2 >= _iterator.length) break; _ref = _iterator[_i2++]; } else { _i2 = _iterator.next(); if (_i2.done) break; _ref = _i2.value; } var directive = _ref; if (directive.value.value === "use strict") { isStrict = true; checkLVal = true; checkLValStrict = true; break; } } } // if (isStrict && node.id && node.id.type === "Identifier" && node.id.name === "yield") { this.raise(node.id.start, "Binding yield in strict mode"); } if (checkLVal) { var nameHash = _Object$create(null); var oldStrict = this.state.strict; if (checkLValStrict) this.state.strict = true; if (node.id) { this.checkLVal(node.id, true); } for (var _iterator2 = (node.params /*: Array<Object>*/), _isArray2 = Array.isArray(_iterator2), _i3 = 0, _iterator2 = _isArray2 ? _iterator2 : _getIterator(_iterator2);;) { var _ref2; if (_isArray2) { if (_i3 >= _iterator2.length) break; _ref2 = _iterator2[_i3++]; } else { _i3 = _iterator2.next(); if (_i3.done) break; _ref2 = _i3.value; } var param = _ref2; this.checkLVal(param, true, nameHash); } this.state.strict = oldStrict; } }; // Parses a comma-separated list of expressions, and returns them as // an array. `close` is the token type that ends the list, and // `allowEmpty` can be turned on to allow subsequent commas with // nothing in between them to be parsed as `null` (which is needed // for array literals). pp.parseExprList = function (close, allowTrailingComma, allowEmpty, refShorthandDefaultPos) { var elts = [], first = true; while (!this.eat(close)) { if (first) { first = false; } else { this.expect(_tokenizerTypes.types.comma); if (allowTrailingComma && this.eat(close)) break; } elts.push(this.parseExprListItem(allowEmpty, refShorthandDefaultPos)); } return elts; }; pp.parseExprListItem = function (allowEmpty, refShorthandDefaultPos) { var elt = undefined; if (allowEmpty && this.match(_tokenizerTypes.types.comma)) { elt = null; } else if (this.match(_tokenizerTypes.types.ellipsis)) { elt = this.parseSpread(refShorthandDefaultPos); } else { elt = this.parseMaybeAssign(false, refShorthandDefaultPos); } return elt; }; // Parse the next token as an identifier. If `liberal` is true (used // when parsing properties), it will also convert keywords into // identifiers. pp.parseIdentifier = function (liberal) { var node = this.startNode(); if (this.match(_tokenizerTypes.types.name)) { if (!liberal && this.state.strict && _utilIdentifier.reservedWords.strict(this.state.value)) { this.raise(this.state.start, "The keyword '" + this.state.value + "' is reserved"); } node.name = this.state.value; } else if (liberal && this.state.type.keyword) { node.name = this.state.type.keyword; } else { this.unexpected(); } if (!liberal && node.name === "await" && this.state.inAsync) { this.raise(node.start, "invalid use of await inside of an async function"); } this.next(); return this.finishNode(node, "Identifier"); }; // Parses await expression inside async function. pp.parseAwait = function (node) { if (!this.state.inAsync) { this.unexpected(); } if (this.isLineTerminator()) { this.unexpected(); } if (this.match(_tokenizerTypes.types.star)) { this.raise(node.start, "await* has been removed from the async functions proposal. Use Promise.all() instead."); } node.argument = this.parseMaybeUnary(); return this.finishNode(node, "AwaitExpression"); }; // Parses yield expression inside generator. pp.parseYield = function () { var node = this.startNode(); this.next(); if (this.match(_tokenizerTypes.types.semi) || this.canInsertSemicolon() || !this.match(_tokenizerTypes.types.star) && !this.state.type.startsExpr) { node.delegate = false; node.argument = null; } else { node.delegate = this.eat(_tokenizerTypes.types.star); node.argument = this.parseMaybeAssign(); } return this.finishNode(node, "YieldExpression"); }; },{"../tokenizer/types":17,"../util/identifier":18,"./index":5,"babel-runtime/core-js/get-iterator":21,"babel-runtime/core-js/object/create":22,"babel-runtime/helpers/interop-require-default":26}],5:[function(require,module,exports){ /* @flow */ "use strict"; var _inherits = require("babel-runtime/helpers/inherits")["default"]; var _classCallCheck = require("babel-runtime/helpers/class-call-check")["default"]; var _getIterator = require("babel-runtime/core-js/get-iterator")["default"]; var _interopRequireDefault = require("babel-runtime/helpers/interop-require-default")["default"]; exports.__esModule = true; var _utilIdentifier = require("../util/identifier"); var _options = require("../options"); var _tokenizer = require("../tokenizer"); var _tokenizer2 = _interopRequireDefault(_tokenizer); var plugins = {}; exports.plugins = plugins; var Parser = (function (_Tokenizer) { _inherits(Parser, _Tokenizer); function Parser(options /*: Object*/, input /*: string*/) { _classCallCheck(this, Parser); options = _options.getOptions(options); _Tokenizer.call(this, options, input); this.options = options; this.inModule = this.options.sourceType === "module"; this.isReservedWord = _utilIdentifier.reservedWords[6]; this.input = input; this.plugins = this.loadPlugins(this.options.plugins); // If enabled, skip leading hashbang line. if (this.state.pos === 0 && this.input[0] === "#" && this.input[1] === "!") { this.skipLineComment(2); } } Parser.prototype.hasPlugin = function hasPlugin(name /*: string*/) /*: boolean*/ { return !!(this.plugins["*"] || this.plugins[name]); }; Parser.prototype.extend = function extend(name /*: string*/, f /*: Function*/) { this[name] = f(this[name]); }; Parser.prototype.loadPlugins = function loadPlugins(plugins /*: Array<string>*/) /*: Object*/ { var pluginMap = {}; if (plugins.indexOf("flow") >= 0) { // ensure flow plugin loads last plugins = plugins.filter(function (plugin) { return plugin !== "flow"; }); plugins.push("flow"); } for (var _iterator = plugins, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _getIterator(_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 _name = _ref; if (!pluginMap[_name]) { pluginMap[_name] = true; var plugin = exports.plugins[_name]; if (plugin) plugin(this); } } return pluginMap; }; Parser.prototype.parse = function parse() /*: { type: "File", program: { type: "Program", body: Array<Object> } }*/ { var file = this.startNode(); var program = this.startNode(); this.nextToken(); return this.parseTopLevel(file, program); }; return Parser; })(_tokenizer2["default"]); exports["default"] = Parser; },{"../options":2,"../tokenizer":15,"../util/identifier":18,"babel-runtime/core-js/get-iterator":21,"babel-runtime/helpers/class-call-check":24,"babel-runtime/helpers/inherits":25,"babel-runtime/helpers/interop-require-default":26}],6:[function(require,module,exports){ "use strict"; var _interopRequireDefault = require("babel-runtime/helpers/interop-require-default")["default"]; var _utilLocation = require("../util/location"); var _index = require("./index"); var _index2 = _interopRequireDefault(_index); var pp = _index2["default"].prototype; // This function is used to raise exceptions on parse errors. It // takes an offset integer (into the current `input`) to indicate // the location of the error, attaches the position to the end // of the error message, and then raises a `SyntaxError` with that // message. pp.raise = function (pos, message) { var loc = _utilLocation.getLineInfo(this.input, pos); message += " (" + loc.line + ":" + loc.column + ")"; var err = new SyntaxError(message); err.pos = pos; err.loc = loc; throw err; }; },{"../util/location":19,"./index":5,"babel-runtime/helpers/interop-require-default":26}],7:[function(require,module,exports){ "use strict"; var _getIte