deps: import acorn@5.7.2

Imported from the tarball published on npm
(https://registry.npmjs.org/acorn/-/acorn-5.7.2.tgz).

Update to emcaScript version 10 in order to get support for
binding-less catch statements.

Also needed to parse node.js lib API in #22405.

PR-URL: #22488
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: John-David Dalton <john.david.dalton@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Bryan English <bryan@bryanenglish.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

Author: rubys

LICENSE

@@ -53,7 +53,7 @@ The externally maintained libraries used by Node.js are:
 
 - Acorn, located at deps/acorn, is licensed as follows:
   """
-    Copyright (C) 2012-2017 by various contributors (see AUTHORS)
+    Copyright (C) 2012-2018 by various contributors (see AUTHORS)
 
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to deal

deps/acorn/AUTHORS

@@ -1,5 +1,6 @@
 List of Acorn contributors. Updated before every release.
 
+Adrian Heine
 Adrian Rakovsky
 Alistair Braidwood
 Amila Welihinda
@@ -8,14 +9,19 @@ Angelo
 Aparajita Fishman
 Arian Stolwijk
 Artem Govorov
+Boopesh Mahendran
 Bradley Heinz
 Brandon Mills
 Charles Hughes
+Charmander
+Chris McKnight
 Conrad Irwin
 Daniel Tschinder
 David Bonnet
 Domenico Matteo
 ehmicky
+Eugene Obrezkov
+Felix Maier
 Forbes Lindesay
 Gilad Peleg
 impinball
@@ -34,6 +40,7 @@ Keheliya Gallaba
 Kevin Irish
 Kevin Kwok
 krator
+laosb
 Marek
 Marijn Haverbeke
 Martin Carlberg
@@ -60,6 +67,7 @@ Richard Gibson
 Rich Harris
 Sebastian McKenzie
 Shahar Soel
+Sheel Bedi
 Simen Bekkhus
 Teddy Katz
 Timothy Gu

deps/acorn/CHANGELOG.md

@@ -1,3 +1,129 @@
+## 5.7.2 (2018-08-24)
+
+### Bug fixes
+
+Properly handle `allowAwaitOutsideFunction` in for statements.
+
+Treat function declarations at the top level of modules like let bindings.
+
+Don't allow async function declarations as the only statement under a label.
+
+## 5.7.1 (2018-06-15)
+
+### Bug fixes
+
+Make sure the walker and bin files are rebuilt on release (the previous release didn't get the up-to-date versions).
+
+## 5.7.0 (2018-06-15)
+
+### Bug fixes
+
+Fix crash in walker when walking a binding-less catch node.
+
+### New features
+
+Upgraded to Unicode 11.
+
+## 5.6.2 (2018-06-05)
+
+### Bug fixes
+
+In the walker, go back to allowing the `baseVisitor` argument to be null to default to the default base everywhere.
+
+## 5.6.1 (2018-06-01)
+
+### Bug fixes
+
+Fix regression when passing `null` as fourth argument to `walk.recursive`.
+
+## 5.6.0 (2018-05-31)
+
+### Bug fixes
+
+Fix a bug in the walker that caused a crash when walking an object pattern spread.
+
+### New features
+
+Allow U+2028 and U+2029 in string when ECMAVersion >= 10.
+
+Allow binding-less catch statements when ECMAVersion >= 10.
+
+Add `allowAwaitOutsideFunction` option for parsing top-level `await`.
+
+## 5.5.3 (2018-03-08)
+
+### Bug fixes
+
+A _second_ republish of the code in 5.5.1, this time with yarn, to hopefully get valid timestamps.
+
+## 5.5.2 (2018-03-08)
+
+### Bug fixes
+
+A republish of the code in 5.5.1 in an attempt to solve an issue with the file timestamps in the npm package being 0.
+
+## 5.5.1 (2018-03-06)
+
+### Bug fixes
+
+Fix regression in walker causing property values in object patterns to be walked as expressions.
+
+Fix misleading error message for octal escapes in template strings.
+
+## 5.5.0 (2018-02-27)
+
+### Bug fixes
+
+Support object spread in the AST walker.
+
+### New features
+
+The identifier character categorization is now based on Unicode version 10.
+
+Acorn will now validate the content of regular expressions, including new ES9 features.
+
+## 5.4.1 (2018-02-02)
+
+### Bug fixes
+
+5.4.0 somehow accidentally included an old version of walk.js.
+
+## 5.4.0 (2018-02-01)
+
+### Bug fixes
+
+Disallow duplicate or escaped flags on regular expressions.
+
+Disallow octal escapes in strings in strict mode.
+
+### New features
+
+Add support for async iteration.
+
+Add support for object spread and rest.
+
+## 5.3.0 (2017-12-28)
+
+### Bug fixes
+
+Fix parsing of floating point literals with leading zeroes in loose mode.
+
+Allow duplicate property names in object patterns.
+
+Don't allow static class methods named `prototype`.
+
+Disallow async functions directly under `if` or `else`.
+
+Parse right-hand-side of `for`/`of` as an assignment expression.
+
+Stricter parsing of `for`/`in`.
+
+Don't allow unicode escapes in contextual keywords.
+
+### New features
+
+Parsing class members was factored into smaller methods to allow plugins to hook into it.
+
 ## 5.2.1 (2017-10-30)
 
 ### Bug fixes

deps/acorn/LICENSE

@@ -1,4 +1,4 @@
-Copyright (C) 2012-2017 by various contributors (see AUTHORS)
+Copyright (C) 2012-2018 by various contributors (see AUTHORS)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

deps/acorn/README.md

@@ -1,6 +1,6 @@
 # Acorn
 
-[![Build Status](https://travis-ci.org/ternjs/acorn.svg?branch=master)](https://travis-ci.org/ternjs/acorn)
+[![Build Status](https://travis-ci.org/acornjs/acorn.svg?branch=master)](https://travis-ci.org/acornjs/acorn)
 [![NPM version](https://img.shields.io/npm/v/acorn.svg)](https://www.npmjs.com/package/acorn)
 [![CDNJS](https://img.shields.io/cdnjs/v/acorn.svg)](https://cdnjs.com/libraries/acorn)  
 [Author funding status: ![maintainer happiness](https://marijnhaverbeke.nl/fund/status_s.png?force)](https://marijnhaverbeke.nl/fund/)
@@ -10,11 +10,11 @@ A tiny, fast JavaScript parser, written completely in JavaScript.
 ## Community
 
 Acorn is open source software released under an
-[MIT license](https://github.com/ternjs/acorn/blob/master/LICENSE).
+[MIT license](https://github.com/acornjs/acorn/blob/master/LICENSE).
 
 You are welcome to
-[report bugs](https://github.com/ternjs/acorn/issues) or create pull
-requests on [github](https://github.com/ternjs/acorn). For questions
+[report bugs](https://github.com/acornjs/acorn/issues) or create pull
+requests on [github](https://github.com/acornjs/acorn). For questions
 and discussion, please use the
 [Tern discussion forum](https://discuss.ternjs.net).
 
@@ -28,10 +28,13 @@ The easiest way to install acorn is with [`npm`][npm].
 npm install acorn
 ```
 
-Alternately, download the source.
+Alternately, you can download the source and build acorn yourself:
 
 ```sh
-git clone https://github.com/ternjs/acorn.git
+git clone https://github.com/acornjs/acorn.git
+cd acorn
+npm install
+npm run build
 ```
 
 ## Components
@@ -63,7 +66,7 @@ object referring to that same position.
 [estree]: https://github.com/estree/estree
 
 - **ecmaVersion**: Indicates the ECMAScript version to parse. Must be
-  either 3, 5, 6 (2015), 7 (2016), 8 (2017), or 9 (2018, partial
+  either 3, 5, 6 (2015), 7 (2016), 8 (2017), 9 (2018) or 10 (2019, partial
   support). This influences support for strict mode, the set of
   reserved words, and support for new syntax features. Default is 7.
 
@@ -97,6 +100,8 @@ object referring to that same position.
   declarations can only appear at a program's top level. Setting this
   option to `true` allows them anywhere where a statement is allowed.
 
+- **allowAwaitOutsideFunction**: By default, `await` expressions can only appear inside `async` functions. Setting this option to `true` allows to have top-level `await` expressions. They are still not allowed in non-`async` functions, though.
+
 - **allowHashBang**: When this is enabled (off by default), if the
   code starts with the characters `#!` (as in a shellscript), the
   first line will be treated as a comment.
@@ -351,7 +356,7 @@ The `bin/acorn` utility can be used to parse a file from the command
 line. It accepts as arguments its input file and the following
 options:
 
-- `--ecma3|--ecma5|--ecma6|--ecma7|--ecma8|--ecma9`: Sets the ECMAScript version
+- `--ecma3|--ecma5|--ecma6|--ecma7|--ecma8|--ecma9|--ecma10`: Sets the ECMAScript version
   to parse. Default is version 7.
 
 - `--module`: Sets the parsing mode to `"module"`. Is set to `"script"` otherwise.
@@ -443,10 +448,20 @@ looseParser.extend("readToken", function(nextMethod) {
 ### Existing plugins
 
  - [`acorn-jsx`](https://github.com/RReverser/acorn-jsx): Parse [Facebook JSX syntax extensions](https://github.com/facebook/jsx)
- - [`acorn-es7-plugin`](https://github.com/MatAtBread/acorn-es7-plugin/): Parse [async/await syntax proposal](https://github.com/tc39/ecmascript-asyncawait)
- - [`acorn-object-spread`](https://github.com/UXtemple/acorn-object-spread): Parse [object spread syntax proposal](https://github.com/sebmarkbage/ecmascript-rest-spread)
- - [`acorn-es7`](https://www.npmjs.com/package/acorn-es7): Parse [decorator syntax proposal](https://github.com/wycats/javascript-decorators)
- - [`acorn-objj`](https://www.npmjs.com/package/acorn-objj): [Objective-J](http://www.cappuccino-project.org/learn/objective-j.html) language parser built as Acorn plugin
- - [`acorn-object-rest-spread`](https://github.com/victor-homyakov/acorn-object-rest-spread) Parse [Object Rest/Spread Properties proposal](https://github.com/tc39/proposal-object-rest-spread), works with latest Acorn version (5.0.3)
- - [`acorn-static-class-property-initializer`](https://github.com/victor-homyakov/acorn-static-class-property-initializer) Partial support for static class properties from [ES Class Fields & Static Properties Proposal](https://github.com/tc39/proposal-class-public-fields) to support static property initializers in [React components written as ES6+ classes](https://babeljs.io/blog/2015/06/07/react-on-es6-plus)
+ - [`acorn-objj`](https://github.com/cappuccino/acorn-objj): [Objective-J](http://www.cappuccino-project.org/learn/objective-j.html) language parser built as Acorn plugin
 
+ Plugins for ECMAScript proposals:
+
+ - [`acorn-stage3`](https://github.com/acornjs/acorn-stage3): Parse most stage 3 proposals, bundling:
+   - [`acorn-async-iteration`](https://github.com/acornjs/acorn-async-iteration): Parse [async iteration proposal](https://github.com/tc39/proposal-async-iteration)
+   - [`acorn-bigint`](https://github.com/acornjs/acorn-bigint): Parse [BigInt proposal](https://github.com/tc39/proposal-bigint)
+   - [`acorn-class-fields`](https://github.com/acornjs/acorn-class-fields): Parse [class fields proposal](https://github.com/tc39/proposal-class-fields)
+   - [`acorn-dynamic-import`](https://github.com/kesne/acorn-dynamic-import): Parse [import() proposal](https://github.com/tc39/proposal-dynamic-import)
+   - [`acorn-import-meta`](https://github.com/acornjs/acorn-import-meta): Parse [import.meta proposal](https://github.com/tc39/proposal-import-meta)
+   - [`acorn-numeric-separator`](https://github.com/acornjs/acorn-numeric-separator): Parse [numeric separator proposal](https://github.com/tc39/proposal-numeric-separator)
+   - [`acorn-optional-catch-binding`](https://github.com/acornjs/acorn-optional-catch-binding): Parse [optional catch binding proposal](https://github.com/tc39/proposal-optional-catch-binding)
+   - [`acorn-private-methods`](https://github.com/acornjs/acorn-private-methods): parse [private methods, getters and setters proposal](https://github.com/tc39/proposal-private-methods)
+   - [`acorn5-object-spread`](https://github.com/adrianheine/acorn5-object-spread): Parse [Object Rest/Spread Properties proposal](https://github.com/tc39/proposal-object-rest-spread)
+ - [`acorn-object-rest-spread`](https://github.com/victor-homyakov/acorn-object-rest-spread): Parse [Object Rest/Spread Properties proposal](https://github.com/tc39/proposal-object-rest-spread)
+ - [`acorn-es7`](https://github.com/angelozerr/acorn-es7): Parse [decorator syntax proposal](https://github.com/wycats/javascript-decorators)
+ - [`acorn-static-class-property-initializer`](https://github.com/victor-homyakov/acorn-static-class-property-initializer): Partial support for static class properties from [ES Class Fields & Static Properties Proposal](https://github.com/tc39/proposal-class-public-fields) to support static property initializers in [React components written as ES6+ classes](https://babeljs.io/blog/2015/06/07/react-on-es6-plus)

deps/acorn/bin/_acorn.js

@@ -0,0 +1,69 @@
+#!/usr/bin/env node
+'use strict';
+
+var path = require('path');
+var fs = require('fs');
+var acorn = require('../dist/acorn.js');
+
+var infile;
+var forceFile;
+var silent = false;
+var compact = false;
+var tokenize = false;
+var options = {};
+
+function help(status) {
+  var print = (status === 0) ? console.log : console.error;
+  print("usage: " + path.basename(process.argv[1]) + " [--ecma3|--ecma5|--ecma6|--ecma7|--ecma8|--ecma9|...|--ecma2015|--ecma2016|--ecma2017|--ecma2018|...]");
+  print("        [--tokenize] [--locations] [---allow-hash-bang] [--compact] [--silent] [--module] [--help] [--] [infile]");
+  process.exit(status);
+}
+
+for (var i = 2; i < process.argv.length; ++i) {
+  var arg = process.argv[i];
+  if ((arg === "-" || arg[0] !== "-") && !infile) { infile = arg; }
+  else if (arg === "--" && !infile && i + 2 === process.argv.length) { forceFile = infile = process.argv[++i]; }
+  else if (arg === "--locations") { options.locations = true; }
+  else if (arg === "--allow-hash-bang") { options.allowHashBang = true; }
+  else if (arg === "--silent") { silent = true; }
+  else if (arg === "--compact") { compact = true; }
+  else if (arg === "--help") { help(0); }
+  else if (arg === "--tokenize") { tokenize = true; }
+  else if (arg === "--module") { options.sourceType = "module"; }
+  else {
+    var match = arg.match(/^--ecma(\d+)$/);
+    if (match)
+      { options.ecmaVersion = +match[1]; }
+    else
+      { help(1); }
+  }
+}
+
+function run(code) {
+  var result;
+  try {
+    if (!tokenize) {
+      result = acorn.parse(code, options);
+    } else {
+      result = [];
+      var tokenizer$$1 = acorn.tokenizer(code, options), token;
+      do {
+        token = tokenizer$$1.getToken();
+        result.push(token);
+      } while (token.type !== acorn.tokTypes.eof)
+    }
+  } catch (e) {
+    console.error(e.message);
+    process.exit(1);
+  }
+  if (!silent) { console.log(JSON.stringify(result, null, compact ? null : 2)); }
+}
+
+if (forceFile || infile && infile !== "-") {
+  run(fs.readFileSync(infile, "utf8"));
+} else {
+  var code = "";
+  process.stdin.resume();
+  process.stdin.on("data", function (chunk) { return code += chunk; });
+  process.stdin.on("end", function () { return run(code); });
+}