v5.2.2

process glob matching in babel-cli (windows compat)

.babelrc

@@ -0,0 +1,6 @@
+{
+  "stage": 0,
+  "loose": ["all"],
+  "blacklist": ["es6.tailCall"],
+  "optional": ["optimisation.flow.forOf"]
+}

.editorconfig

@@ -4,8 +4,8 @@ root = true
 insert_final_newline = true
 charset = utf-8
 trim_trailing_whitespace = true
-insert_final_newline = true
+end_of_line = lf
 
-[*.js]
+[*.{js,json}]
 indent_style = space
 indent_size = 2

.eslintignore

@@ -0,0 +1 @@
+src/babel/transformation/templates

.eslintrc

@@ -0,0 +1,22 @@
+{
+  "parser": "babel-eslint",
+  "rules": {
+    "strict": 0,
+    "no-underscore-dangle": 0,
+    "no-unused-vars": 0,
+    "curly": 0,
+    "no-multi-spaces": 0,
+    "key-spacing": 0,
+    "no-return-assign": 0,
+    "consistent-return": 0,
+    "no-shadow": 0,
+    "no-comma-dangle": 0,
+    "no-use-before-define": 0,
+    "no-empty": 0,
+    "new-parens": 0,
+    "no-cond-assign": 0
+  },
+  "env": {
+    "node": true
+  }
+}

.gitignore

@@ -1,6 +1,6 @@
 .DS_Store
 node_modules
-test/tmp
+test/core/tmp
 *.log
 *.cache
 /templates.json
@@ -11,3 +11,7 @@ test/tmp
 coverage
 dist
 .package.json
+packages/babel-runtime/core-js
+packages/babel-runtime/helpers/*.js
+packages/babel-runtime/regenerator/*.js
+lib

.gitmodules

@@ -1,9 +1,6 @@
 [submodule "vendor/traceur"]
 	path = vendor/traceur
 	url = https://github.com/google/traceur-compiler
-[submodule "vendor/regenerator"]
-	path = vendor/regenerator
-	url = https://github.com/facebook/regenerator
-[submodule "vendor/test262"]
-	path = vendor/test262
-	url = https://github.com/tc39/test262
+[submodule "vendor/compat-table"]
+	path = vendor/compat-table
+	url = https://github.com/kangax/compat-table

.istanbul.yml

@@ -0,0 +1,2 @@
+instrumentation:
+  root: lib

.jshintignore

@@ -1,3 +0,0 @@
-node_modules
-test
-lib/6to5/transformation/templates

.jshintrc

@@ -1,29 +0,0 @@
-{
-  "esnext": true,
-  "indent": 2,
-  "freeze": true,
-  "camelcase": true,
-  "unused": true,
-  "eqnull": true,
-  "proto": true,
-  "newcap": true,
-  "supernew": true,
-  "noyield": true,
-  "evil": true,
-  "node": true,
-  "boss": true,
-  "expr": true,
-  "undef": true,
-  "loopfunc": true,
-  "white": true,
-  "maxparams": 5,
-  "maxdepth": 4,
-
-  "globals": {
-    "window": true,
-    "suite": true,
-    "set": true,
-    "before": true,
-    "bench": true
-  }
-}

.npmignore

@@ -1,12 +1,15 @@
-node_modules
 *.log
 *.cache
-lib/6to5/transformation/templates
-test
-benchmark
-Makefile
 .*
-dist
-tests.json
-CHANGELOG.md
-.package.json
+/lib/babel/transformation/templates
+/test
+/benchmark
+/Makefile
+/dist
+/tests.json
+/CHANGELOG.md
+/.package.json
+/coverage
+/vendor
+/packages
+/src

.travis.yml

@@ -1,11 +1,11 @@
+#sudo: false
 language: node_js
+cache:
+  directories:
+    - node_modules
 node_js:
-  - "0.10"
-  - "0.11"
-
-branches:
-  except:
-   - experimental
+  - "0.12"
+  - "iojs"
 
 before_script: "npm install -g codeclimate-test-reporter"
 script: "make test-travis"

CONTRIBUTING.md

@@ -1,32 +1,169 @@
+<p align="center">
+   <strong><a href="#setup">Setup</a></strong>
+   |
+   <strong><a href="#running-tests">Running tests</a></strong>
+   |
+   <strong><a href="#workflow">Workflow</a></strong>
+   |
+   <strong><a href="#dependencies">Dependencies</a></strong>
+   |
+   <strong><a href="#code-standards">Code Standards</a></strong>
+</p>
+
+----
+
 # Contributing
 
-Before contributing, please read the [code of conduct](https://github.com/6to5/6to5/blob/master/CODE_OF_CONDUCT.md).
+Contributions are always welcome, no matter how large or small. Before
+contributing, please read the
+[code of conduct](https://github.com/babel/babel/blob/master/CODE_OF_CONDUCT.md).
+
+
+## Developing
+
+#### Setup
+
+```sh
+$ git clone https://github.com/babel/babel
+$ cd babel
+$ make bootstrap
+```
+
+Then you can either run:
+
+```sh
+$ make build-core
+```
+
+to build Babel **once** or:
+
+```sh
+$ make watch-core
+```
+
+to have Babel build itself then incrementally build files on change.
+
+#### Running tests
+
+You can run tests via:
+
+```sh
+$ make test
+```
+
+This is mostly overkill and you can limit the tests to a select few by directly
+running them with `mocha`:
+
+```sh
+$ mocha test/core/transformation.js
+```
+
+Use mocha's `--grep` option to run a subset of tests by name:
+
+```sh
+$ mocha test/core/transformation.js --grep es7
+```
+
+If you don't have `mocha` installed globally, you can still use it from Babel's
+dependencies in `node_modules`, but make sure `node_modules/.bin` is added to
+your [`$PATH`](http://unix.stackexchange.com/questions/26047/how-to-correctly-add-a-path-to-path) environment variable.
+
+
+#### Workflow
+
+* Fork the repository
+* Clone your fork and change directory to it (`git clone git@github.com:yourUserName/babel.git && cd babel`)
+* Install the project dependencies (`make bootstrap`)
+* Link your forked clone (`npm link`)
+* Develop your changes ensuring you're fetching updates from upstream often
+* Ensure the test are passing (`make test`)
+* Create new pull request explaining your proposed change or reference an issue in your commit message
+
+
+#### Dependencies
+
++ [ast-types](http://ghub.io/ast-types) This is required to monkeypatch regenerators AST definitions. Could be improved in the future.
+
++ [chalk](http://ghub.io/chalk) This is used for terminal color highlighting for syntax errors.
+
++ [convert-source-map](http://ghub.io/convert-source-map) Turns a source map object into a comment etc.
+
++ [core-js](http://ghub.io/core-js) Used for the polyfill.
+
++ [debug](http://ghub.io/debug) Used to output debugging information when NODE_DEBUG is set to babel.
+
++ [detect-indent](http://ghub.io/detect-indent) This is used in the code generator so it can infer indentation.
+
++ [estraverse](http://ghub.io/estraverse) The only method on this is attachComments. I'd like to implement our own comment attachment algorithm eventually though.
+
++ [esutils](http://ghub.io/esutils) Various ES related utilities. Check whether something is a keyword etc.
+
++ [fs-readdir-recursive](http://ghub.io/fs-readdir-recursive) Recursively search a directory for.
+
++ [globals](http://ghub.io/globals) A list of JavaScript global variables. This is used by the scope tracking to check for colliding variables.
+
++ [is-integer](http://ghub.io/is-integer) Checks if something is an integer.
+
++ [js-tokens](http://ghub.io/js-tokens) This is used to get tokens for syntax error highlighting.
+
++ [leven](http://ghub.io/leven) A levenstein algorithm to determine how close a word is to another. This is used to offer suggestions when using the utility.undeclaredVariableCheck transformer.
+
++ [line-numbers](http://ghub.io/line-numbers) Used to produce the code frames in syntax errors.
+
++ [lodash](http://ghub.io/lodash) Used for various utilities.
+
++ [minimatch](http://ghub.io/minimatch) This is used to match glob-style ignore/only filters.
+
++ [output-file-sync](http://ghub.io/output-file-sync) Synchronously writes a file and create its ancestor directories if needed.
+
++ [path-is-absolute](http://ghub.io/path-is-absolute) Checks if a path is absolute. C:\foo and \foo are considered absolute.
+
++ [regenerator](http://ghub.io/regenerator) This is used to transform generators/async functions.
+
++ [regexpu](http://ghub.io/regexpu) Used to transform unicode regex patterns.
+
++ [repeating](http://ghub.io/repeating) Repeats a string.
+
++ [shebang-regex](http://ghub.io/shebang-regex) Literally just a regex that matches shebangs.
+
++ [slash](http://ghub.io/slash) Normalises path separators.
+
++ [source-map](http://ghub.io/source-map) Generates sourcemaps.
+
++ [source-map-support](http://ghub.io/source-map-support) Adds source map support to babel-node/babel/register.
+
++ [strip-json-comments](http://ghub.io/strip-json-comments) Remove comments from a JSON string. This is used for .babelrc files.
+
++ [to-fast-properties](http://ghub.io/to-fast-properties) A V8 trick to put an object into fast properties mode.
+
++ [trim-right](http://ghub.io/trim-right) Trims the rightside whitespace.
+
++ [user-home](http://ghub.io/user-home) Gets the users home directory. This is used to resolve the babel-node/babel/register cache.
+
+
+#### Code Standards
 
  * **General**
-   * No ES6 syntax features or methods, exclusively ES5.
    * Max of five arguments for functions
    * Max depth of four nested blocks
    * 2-spaced soft tabs
+
  * **Naming**
    * CamelCase all class names
    * camelBack all variable names
+
  * **Spacing**
    * Spaces after all keywords
    * Spaces before all left curly braces
+
  * **Comments**
    * Use JSDoc-style comments for methods
    * Single-line comments for ambiguous code
+
  * **Quotes**
    * Always use double quotes
    * Only use single quotes when the string contains a double quote
+
  * **Declaration**
    * No unused variables
    * No pollution of global variables and prototypes
-
-## Testing
-
-    $ make test
-
-## Linting
-
-    $ make lint

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2014-2015 Sebastian McKenzie
+Copyright (c) 2014-2015 Sebastian McKenzie <sebmck@gmail.com>
 
 MIT License
 

Makefile

@@ -1,67 +1,75 @@
+MAKEFLAGS = -j1
 BROWSERIFY_CMD = node_modules/browserify/bin/cmd.js
 ISTANBUL_CMD = node_modules/istanbul/lib/cli.js cover
 UGLIFY_CMD = node_modules/uglify-js/bin/uglifyjs
+#UGLIFY_CMD = node_modules/uglify-js/bin/uglifyjs --mangle sort
 JSHINT_CMD = node_modules/jshint/bin/jshint
 MOCHA_CMD = node_modules/mocha/bin/_mocha
+BABEL_CMD = node_modules/babel/bin/babel
 
 export NODE_ENV = test
 
-.PHONY: clean test test-cov test-clean lint test-travis test-simple test-all test-browser publish build bootstrap publish-core
+.PHONY: clean test test-cov test-clean test-travis test-simple test-all test-browser test-parser publish build bootstrap publish-core publish-runtime build-core watch-core build-core-test clean-core
+
+build-core: clean-core
+	node $(BABEL_CMD) src --out-dir lib --copy-files
+
+build-core-test: clean-core
+	node $(BABEL_CMD) src --out-dir lib --copy-files --auxiliary-comment "istanbul ignore next"
+
+watch-core: clean-core
+	node $(BABEL_CMD) src --out-dir lib --watch --copy-files
+
+clean-core:
+	rm -rf lib
 
 build:
 	mkdir -p dist
+	make build-core
 
-	node bin/cache-templates
+	node tools/cache-templates
 
-	node $(BROWSERIFY_CMD) -e lib/6to5/polyfill.js >dist/polyfill.js
+	node $(BROWSERIFY_CMD) -e lib/babel/polyfill.js >dist/polyfill.js
 	node $(UGLIFY_CMD) dist/polyfill.js >dist/polyfill.min.js
 
-	node $(BROWSERIFY_CMD) lib/6to5/browser.js -s to5 >dist/6to5.js
-	node $(UGLIFY_CMD) dist/6to5.js >dist/6to5.min.js
+	node $(BROWSERIFY_CMD) lib/babel/api/browser.js -s babel >dist/babel.js
+	node $(UGLIFY_CMD) dist/babel.js >dist/babel.min.js
 
-	node bin/6to5-runtime >dist/runtime.js
-	node $(UGLIFY_CMD) dist/runtime.js >dist/runtime.min.js
+	node packages/babel-cli/bin/babel-external-helpers >dist/external-helpers.js
+	node $(UGLIFY_CMD) dist/external-helpers.js >dist/external-helpers.min.js
 
 	rm -rf templates.json
 
 clean:
-	rm -rf coverage templates.json test/tmp dist
-
-lint:
-	$(JSHINT_CMD) --reporter node_modules/jshint-stylish/stylish.js lib bin
+	rm -rf coverage templates.json test/tmp dist lib
 
 test-clean:
 	rm -rf test/tmp
 
-test: lint
-	$(MOCHA_CMD)
+test: test-parser
+	node $(MOCHA_CMD) test/core
 	make test-clean
 
-test-simple:
-	# excludes test262
-	export SIMPLE_6TO5_TESTS=1
-	make test
-
 test-all:
-	# includes traceur, esnext, regenerator
-	export ALL_6TO5_TESTS=1
+	export ALL_BABEL_TESTS=1; \
 	make test
 
 test-cov:
-	export SIMPLE_6TO5_TESTS=1
 	rm -rf coverage
-	node $(ISTANBUL_CMD) $(MOCHA_CMD) --
+	make build-core-test
+	node $(ISTANBUL_CMD) $(MOCHA_CMD) -- test/core
 
-test-travis: bootstrap
-	node $(ISTANBUL_CMD) $(MOCHA_CMD) --
-	if test -n "$$CODECLIMATE_REPO_TOKEN"; then codeclimate < coverage/lcov.info; fi
+test-parser:
+	node test/acorn/run.js
+
+test-travis: bootstrap build test
 
 test-browser:
 	mkdir -p dist
 
-	node bin/cache-templates
-	node bin/cache-tests
-	node $(BROWSERIFY_CMD) -e test/_browser.js >dist/6to5-test.js
+	node tools/cache-templates
+	node tools/build-tests
+	node $(BROWSERIFY_CMD) -e test/core/_browser.js >dist/babel-test.js
 	rm -rf templates.json tests.json
 
 	test -n "`which open`" && open test/browser.html
@@ -71,35 +79,43 @@ publish:
 
 	make test
 
-	read -p "Version: "  version; \
+	read -p "Version: " version; \
 	npm version $$version --message "v%s"
 
 	make build
-	cp dist/6to5.min.js browser.js
+	cp dist/babel.min.js browser.js
 	cp dist/polyfill.min.js browser-polyfill.js
-	cp dist/runtime.min.js runtime.js
+	cp dist/external-helpers.min.js external-helpers.js
 
-	node bin/cache-templates
+	node tools/cache-templates
 	test -f templates.json
 
 	npm publish
 
 	git push --follow-tags
 
-	# generate
-	bin/generate-core-package-json >package2.json
-	mv package.json .package.json
-	mv package2.json package.json
+	make publish-cli
+	make publish-runtime
 
+	rm -rf templates.json browser.js browser-polyfill.js external-helpers.js
+
+publish-runtime:
+	cd packages; \
+	node build-runtime.js; \
+	cd babel-runtime; \
 	npm publish
 
-	# restore
-	rm -rf package.json
-	mv .package.json package.json
-
-	rm -rf templates.json browser.js runtime.js browser-polyfill.js
+publish-cli:
+	cd packages; \
+	node build-cli.js; \
+	cd babel-cli; \
+	npm publish
 
 bootstrap:
+	npm list --global --depth 1 babel >/dev/null 2>&1 && npm uninstall -g babel || true
 	npm install
+	npm link
+	cd packages/babel-cli && npm install && npm link && npm link babel-core
 	git submodule update --init
-	cd vendor/regenerator; npm install
+	cd vendor/compat-table && npm install object-assign
+	make build

NOTES.md

@@ -1,13 +0,0 @@
-# Notes
-
- * Wildcard exports/imports wont normalise if `export default` is a non-object. See [#224](https://github.com/6to5/6to5/issues/224).
-
-## 3.0.0 breaking changes
-
- * Remove `allowImportExportEverywhere` option from acorn.
- * Remove this shorthand from playground.
- * Remove `super()` inside non-constructors - add descriptive error message.
- * Split up ES5 getter/setter transforming and ES6 property methods into separate transformers.
- * Add autoindentation.
- * Move `super` transformation from classes into a separate transformer that also supports object expressions.
- * Prefix all fast transformers with `fast`, make them declare that they're a fast transformer similar to optional transformers and add a `--fast` flag to enable them all.

README.md

@@ -1,34 +1,17 @@
 <p align="center">
-  <img alt="6to5" src="https://raw.githubusercontent.com/6to5/logo/master/logo.png" width="546">
-</p>
-
-<p align="center">
-  <a href="https://gratipay.com/sebmck">
-    <img alt="Gratipay" src="https://img.shields.io/gratipay/sebmck.svg?style=flat">
-  </a>
-
-  <a href="https://travis-ci.org/6to5/6to5">
-    <img alt="Travis Status" src="http://img.shields.io/travis/6to5/6to5/master.svg?style=flat&amp;label=travis">
-  </a>
-
-  <a href="https://codeclimate.com/github/6to5/6to5">
-    <img alt="Code Climate Score" src="http://img.shields.io/codeclimate/github/6to5/6to5.svg?style=flat">
-  </a>
-
-  <a href="https://codeclimate.com/github/6to5/6to5">
-    <img alt="Coverage" src="http://img.shields.io/codeclimate/coverage/github/6to5/6to5.svg?style=flat">
-  </a>
-
-  <a href="https://david-dm.org/6to5/6to5">
-    <img alt="Dependency Status" src="http://img.shields.io/david/6to5/6to5.svg?style=flat">
+  <a href="https://babeljs.io/">
+    <img alt="babel" src="https://raw.githubusercontent.com/babel/logo/master/logo.png" width="546">
   </a>
 </p>
 
 <p align="center">
-  <strong>6to5</strong> turns ES6+ code into vanilla ES5, so you can use next generation features <strong>today.</strong>
+  <strong>Babel</strong> is a compiler for writing next generation JavaScript.
 </p>
 
 <p align="center">
-  For more information view the <a href="https://6to5.github.io">documentation</a>. For
-  support visit the <a href="https://gitter.im/6to5/6to5">gitter room</a>.
+  For questions and support please visit the <a href="https://gitter.im/babel/babel">gitter room</a> or <a href="http://stackoverflow.com/questions/tagged/babeljs">StackOverflow</a>. The Babel issue tracker is <strong>exclusively</strong> for bug reports and feature requests.
+</p>
+
+<p align="center">
+  For documentation and website issues please visit the <a href="https://github.com/babel/babel.github.io">babel.github.io</a> repo.
 </p>

appveyor.yml

@@ -1,17 +0,0 @@
-environment:
-  matrix:
-    - nodejs_version: "0.10"
-    - nodejs_version: "0.11"
-
-install:
- - "npm install"
- - "cinst make"
-
-test_script:
- - "node --version"
- - "npm --version"
- - "make test-spec"
-
-build: "off"
-
-version: "{build}"

bin/6to5-node

@@ -1,68 +0,0 @@
-#!/usr/bin/env node
-
-/**
- * This tiny wrapper file checks for known node flags and appends them
- * when found, before invoking the "real" _6to5-node(1) executable.
- */
-
-var args  = ["--harmony", __dirname + "/_6to5-node"];
-
-process.argv.slice(2).forEach(function(arg){
-  var flag = arg.split("=")[0];
-
-  switch (flag) {
-    case "-d":
-      args.unshift("--debug");
-      break;
-
-    case "debug":
-    case "--debug":
-    case "--debug-brk":
-      args.unshift(arg);
-      break;
-
-    case "-gc":
-    case "--expose-gc":
-      args.unshift("--expose-gc");
-      break;
-
-    case "--gc-global":
-    case "--harmony":
-    case "--harmony-proxies":
-    case "--harmony-collections":
-    case "--harmony-generators":
-    case "--no-deprecation":
-    case "--prof":
-    case "--throw-deprecation":
-    case "--trace-deprecation":
-      args.unshift(arg);
-      break;
-
-    default:
-      if (arg.indexOf("--trace") === 0) {
-        args.unshift(arg);
-      } else {
-        args.push(arg);
-      }
-      break;
-  }
-});
-
-try {
-  var kexec = require("kexec");
-  kexec(process.argv[0], args);
-} catch (err) {
-  if (err.code !== "MODULE_NOT_FOUND") throw err;
-
-  var child_process = require("child_process");
-  var proc = child_process.spawn(process.argv[0], args, { stdio: "inherit" });
-  proc.on("exit", function (code, signal) {
-    process.on("exit", function () {
-      if (signal) {
-        process.kill(process.pid, signal);
-      } else {
-        process.exit(code);
-      }
-    })
-  });
-}

bin/6to5-runtime

@@ -1,4 +0,0 @@
-#!/usr/bin/env node
-
-var runtime = require("../lib/6to5/runtime-generator");
-console.log(runtime(process.argv[2]));

bin/6to5/dir.js

@@ -1,68 +0,0 @@
-var chokidar = require("chokidar");
-var mkdirp   = require("mkdirp");
-var path     = require("path");
-var util     = require("./util");
-var fs       = require("fs");
-var _        = require("lodash");
-
-module.exports = function (commander, filenames, opts) {
-  if (commander.sourceMapsInline) {
-    opts.sourceMap = "inline";
-  }
-
-  var write = function (src, relative) {
-    var dest = path.join(commander.outDir, relative);
-
-    var data = util.compile(src, { sourceMapName: dest });
-
-    var up = path.normalize(dest + "/..");
-    mkdirp.sync(up);
-
-    if (commander.sourceMaps) {
-      var mapLoc = dest + ".map";
-      data.code = util.addSourceMappingUrl(data.code, mapLoc);
-      fs.writeFileSync(mapLoc, JSON.stringify(data.map));
-    }
-
-    fs.writeFileSync(dest, data.code);
-
-    console.log(src + " -> " + dest);
-  };
-
-  var handle = function (filename) {
-    if (!fs.existsSync(filename)) return;
-
-    var stat = fs.statSync(filename);
-
-    if (stat.isDirectory(filename)) {
-      var dirname = filename;
-
-      _.each(util.readdirFilter(dirname), function (filename) {
-        write(path.join(dirname, filename), filename);
-      });
-    } else {
-      write(filename, filename);
-    }
-  };
-
-  _.each(filenames, handle);
-
-  if (commander.watch) {
-    _.each(filenames, function (dirname) {
-      var watcher = chokidar.watch(dirname, {
-        persistent: true,
-        ignoreInitial: true
-      });
-
-      _.each(["add", "change", "unlink"], function (type) {
-        watcher.on(type, function (filename) {
-          // chop off the dirname plus the path separator
-          var relative = filename.slice(dirname.length + 1);
-
-          console.log(type, filename);
-          write(filename, relative);
-        });
-      });
-    });
-  }
-};

bin/6to5/index.js

@@ -1,134 +0,0 @@
-#!/usr/bin/env node
-
-var commander = require("commander");
-var transform = require("../../lib/6to5/transformation/transform");
-var util      = require("../../lib/6to5/util");
-var fs        = require("fs");
-var _         = require("lodash");
-
-commander.option("-t, --source-maps-inline", "Append sourceMappingURL comment to bottom of code");
-commander.option("-s, --source-maps", "Save source map alongside the compiled code");
-commander.option("-f, --filename [filename]", "Filename to use when reading from stdin - this will be used in source-maps, errors etc [stdin]", "stdin");
-commander.option("-w, --watch", "Recompile files on changes");
-commander.option("-r, --runtime", "Replace 6to5 declarations with references to a runtime");
-commander.option("-e, --experimental", "Enable experimental support for proposed ES7 features");
-commander.option("-p, --playground", "Enable playground support");
-
-commander.option("-m, --modules [modules]", "Module formatter type to use [common]", "common");
-commander.option("-l, --whitelist [whitelist]", "Whitelist of transformers to ONLY use", util.list);
-commander.option("-b, --blacklist [blacklist]", "Blacklist of transformers to NOT use", util.list);
-commander.option("-i, --optional [list]", "List of optional transformers to enable", util.list);
-commander.option("-o, --out-file [out]", "Compile all input files into a single file");
-commander.option("-d, --out-dir [out]", "Compile an input directory of modules into an output directory");
-commander.option("-c, --remove-comments", "Remove comments from the compiled code", false);
-commander.option("-I, --indent [width]", "Indent width [2]", 2);
-commander.option("-a, --amd-module-ids", "Insert module id in AMD modules", false); // todo: remove in 3.0.0
-commander.option("-m, --module-ids", "Insert module id in modules", false);
-commander.option("-R, --react-compat", "Makes the react transformer produce pre-v0.12 code");
-commander.option("-E, --include-regenerator", "Include the regenerator runtime if necessary", false);
-commander.option("--keep-module-id-extensions", "Keep extensions when generating module ids", false);
-
-commander.on("--help", function(){
-  var outKeys = function (title, obj) {
-    console.log("  " + title + ":");
-    console.log();
-
-    var hasOptional = true;
-
-    _.each(_.keys(obj).sort(), function (key) {
-      if (key[0] === "_") return;
-
-      if (obj[key].optional) {
-        hasOptional = true;
-        key = "[" + key + "]";
-      }
-
-      console.log("    - " + key);
-    });
-
-    console.log();
-  };
-
-  outKeys("Transformers", transform.transformers);
-  outKeys("Module formatters", transform.moduleFormatters);
-});
-
-var pkg = require("../../package.json");
-commander.version(pkg.version);
-commander.usage("[options] <files ...>");
-commander.parse(process.argv);
-
-//
-
-var errors = [];
-
-var filenames = commander.args;
-
-_.each(filenames, function (filename) {
-  if (!fs.existsSync(filename)) {
-    errors.push(filename + " doesn't exist");
-  }
-});
-
-if (commander.outDir && !filenames.length) {
-  errors.push("filenames required for --out-dir");
-}
-
-if (commander.outFile && commander.outDir) {
-  errors.push("cannot have --out-file and --out-dir");
-}
-
-if (commander.watch) {
-  if (!commander.outFile && !commander.outDir) {
-    errors.push("--watch requires --out-file or --out-dir");
-  }
-
-  if (!filenames.length) {
-    errors.push("--watch requires filenames");
-  }
-}
-
-if (commander.sourceMaps) {
-  if (!commander.outFile && !commander.outDir) {
-    errors.push("--source-maps requires --out-file or --out-dir");
-  }
-}
-
-if (errors.length) {
-  console.error(errors.join(". "));
-  process.exit(2);
-}
-
-//
-
-exports.opts = {
-  keepModuleIdExtensions: commander.keepModuleIdExtensions,
-  includeRegenerator:     commander.includeRegenerator,
-  sourceMapName:          commander.outFile,
-  experimental:           commander.experimental,
-  reactCompat:            commander.reactCompat,
-  playground:             commander.playground,
-  moduleIds:              commander.amdModuleIds || commander.moduleIds,
-  blacklist:              commander.blacklist,
-  whitelist:              commander.whitelist,
-  sourceMap:              commander.sourceMaps || commander.sourceMapsInline,
-  optional:               commander.optional,
-  comments:               !commander.removeComments,
-  runtime:                commander.runtime,
-  modules:                commander.modules,
-  format: {
-    indent: {
-      style:     util.repeat(parseInt(commander.indent))
-    }
-  }
-};
-
-var fn;
-
-if (commander.outDir) {
-  fn = require("./dir");
-} else {
-  fn = require("./file");
-}
-
-fn(commander, filenames, exports.opts);

bin/_6to5-node

@@ -1,109 +0,0 @@
-#!/usr/bin/env node
-
-var roadrunner = require("roadrunner");
-var commander  = require("commander");
-var Module     = require("module");
-var path       = require("path");
-var repl       = require("repl");
-var to5        = require("../lib/6to5");
-var util       = require("../lib/6to5/util");
-var vm         = require("vm");
-var _          = require("lodash");
-
-var program = new commander.Command("6to5-node");
-
-program.option("-e, --eval [script]", "Evaluate script");
-program.option("-p, --print", "Evaluate script and print result");
-program.option("-i, --ignore [regex]", "Ignore all files that match this regex when using the require hook");
-program.option("-x, --extensions [extensions]", "List of extensions to hook into [.es6,.js]");
-program.option("-r, --experimental", "Enable experimental support for proposed ES7 features");
-program.option("-g, --playground", "Enable playground support");
-program.option("-c, --cache", "Cache compiled files and require paths");
-
-var pkg = require("../package.json");
-program.version(pkg.version);
-program.usage("[options] [ -e script | script.js ] [arguments]");
-program.parse(process.argv);
-
-if (program.cache) roadrunner.load();
-
-//
-
-to5.register({
-  experimental: program.experimental,
-  extensions:   program.extensions,
-  playground:   program.playground,
-  ignore:       program.ignore,
-  cache:        program.cache && roadrunner.get("6to5")
-});
-
-//
-
-var _eval = function (code, filename) {
-  code = to5.transform(code, {
-    filename: filename,
-    blacklist: ["useStrict"],
-    experimental: program.experimental,
-    playground: program.playground
-  }).code;
-  return vm.runInThisContext(code, filename);
-};
-
-if (program.eval) {
-  var result = _eval(program.eval, "eval");
-  if (program.print) console.log(result);
-} else {
-  if (program.args.length) {
-    // slice all arguments up to the first filename since they're 6to5 args that we handle
-    var args = process.argv.slice(2);
-
-    var i = 0;
-    _.each(args, function (arg, i2) {
-      if (arg[0] !== "-") {
-        i = i2;
-        return false;
-      }
-    });
-    args = args.slice(i);
-
-    // make the filename absolute
-    var filename = args[0]
-    if (!util.isAbsolute(filename)) args[0] = path.join(process.cwd(), filename);
-
-    // add back on node and concat the sliced args
-    process.argv = ["node"].concat(args);
-
-    Module.runMain();
-  } else {
-    replStart();
-  }
-}
-
-if (program.cache) roadrunner.save();
-
-function replStart() {
-  repl.start({
-    prompt: "> ",
-    input: process.stdin,
-    output: process.stdout,
-    eval: replEval,
-    useGlobal: true
-  });
-}
-
-function replEval(code, context, filename, callback) {
-  var err;
-  var result;
-
-  try {
-    if (/^\((.*?)\n\)$/.test(code)) {
-      code = code.slice(1, -2); // remove "(" and "\n)"
-    }
-
-    result = _eval(code, filename);
-  } catch (e) {
-    err = e;
-  }
-
-  callback(err, result);
-}

bin/generate-core-package-json

@@ -1,11 +0,0 @@
-#!/usr/bin/env node
-
-var pkg = require("../package.json");
-pkg.name += "-core";
-delete pkg.dependencies.chokidar;
-delete pkg.optionalDependencies;
-delete pkg.devDependencies;
-delete pkg.preferGlobal;
-delete pkg.scripts;
-delete pkg.bin;
-console.log(JSON.stringify(pkg, null, "  "));

doc/index.md

@@ -1 +0,0 @@
-See [6to5.github.io/docs](https://github.com/6to5/6to5.github.io/tree/master/docs).

lib/6to5/file.js

@@ -1,319 +0,0 @@
-module.exports = File;
-
-var SHEBANG_REGEX = /^\#\!.*/;
-
-var transform = require("./transformation/transform");
-var generate  = require("./generation/generator");
-var Scope     = require("./traverse/scope");
-var util      = require("./util");
-var t         = require("./types");
-var _         = require("lodash");
-
-function File(opts) {
-  this.dynamicImports   = [];
-  this.dynamicImportIds = {};
-  this.opts             = File.normaliseOptions(opts);
-  this.transformers     = this.getTransformers();
-  this.uids             = {};
-  this.ast              = {};
-}
-
-File.helpers = [
-  "inherits",
-  "defaults",
-  "prototype-properties",
-  "apply-constructor",
-  "tagged-template-literal",
-  "interop-require",
-  "to-array",
-  "sliced-to-array",
-  "object-without-properties",
-  "has-own",
-  "slice",
-  "bind",
-  "define-property",
-  "async-to-generator",
-  "interop-require-wildcard",
-  "typeof",
-  "extends",
-  "get"
-];
-
-File.excludeHelpersFromRuntime = [
-  "async-to-generator",
-  "typeof"
-];
-
-File.normaliseOptions = function (opts) {
-  opts = _.cloneDeep(opts || {});
-
-  _.defaults(opts, {
-    keepModuleIdExtensions: false,
-    includeRegenerator:     false,
-    experimental:           false,
-    reactCompat:            false,
-    playground:             false,
-    whitespace:             true,
-    moduleIds:              opts.amdModuleIds || false,
-    blacklist:              [],
-    whitelist:              [],
-    sourceMap:              false,
-    optional:               [],
-    comments:               true,
-    filename:               "unknown",
-    modules:                "common",
-    runtime:                false,
-    code:                   true,
-    ast:                    true
-  });
-
-  // normalise windows path separators to unix
-  opts.filename = opts.filename.replace(/\\/g, "/");
-
-  opts.blacklist = util.arrayify(opts.blacklist);
-  opts.whitelist = util.arrayify(opts.whitelist);
-  opts.optional  = util.arrayify(opts.optional);
-
-  _.defaults(opts, {
-    moduleRoot: opts.sourceRoot
-  });
-
-  _.defaults(opts, {
-    sourceRoot: opts.moduleRoot
-  });
-
-  _.defaults(opts, {
-    filenameRelative: opts.filename
-  });
-
-  _.defaults(opts, {
-    sourceFileName: opts.filenameRelative,
-    sourceMapName:  opts.filenameRelative
-  });
-
-  if (opts.runtime === true) {
-    opts.runtime = "to5Runtime";
-  }
-
-  if (opts.playground) {
-    opts.experimental = true;
-  }
-
-  transform._ensureTransformerNames("blacklist", opts.blacklist);
-  transform._ensureTransformerNames("whitelist", opts.whitelist);
-  transform._ensureTransformerNames("optional", opts.optional);
-
-  return opts;
-};
-
-File.prototype.getTransformers = function () {
-  var file = this;
-  var transformers = [];
-  var secondPassTransformers = [];
-
-  _.each(transform.transformers, function (transformer) {
-    if (transformer.canRun(file)) {
-      transformers.push(transformer);
-
-      if (transformer.secondPass) {
-        secondPassTransformers.push(transformer);
-      }
-
-      if (transformer.manipulateOptions) {
-        transformer.manipulateOptions(file.opts, file);
-      }
-    }
-  });
-
-  return transformers.concat(secondPassTransformers);
-};
-
-File.prototype.toArray = function (node, i) {
-  if (t.isArrayExpression(node)) {
-    return node;
-  } else if (t.isIdentifier(node) && node.name === "arguments") {
-    return t.callExpression(t.memberExpression(this.addHelper("slice"), t.identifier("call")), [node]);
-  } else {
-    var declarationName = "to-array";
-    var args = [node];
-    if (i) {
-      args.push(t.literal(i));
-      declarationName = "sliced-to-array";
-    }
-    return t.callExpression(this.addHelper(declarationName), args);
-  }
-};
-
-File.prototype.getModuleFormatter = function (type) {
-  var ModuleFormatter = _.isFunction(type) ? type : transform.moduleFormatters[type];
-
-  if (!ModuleFormatter) {
-    var loc = util.resolve(type);
-    if (loc) ModuleFormatter = require(loc);
-  }
-
-  if (!ModuleFormatter) {
-    throw new ReferenceError("Unknown module formatter type " + JSON.stringify(type));
-  }
-
-  return new ModuleFormatter(this);
-};
-
-File.prototype.parseShebang = function (code) {
-  var shebangMatch = code.match(SHEBANG_REGEX);
-  if (shebangMatch) {
-    this.shebang = shebangMatch[0];
-
-    // remove shebang
-    code = code.replace(SHEBANG_REGEX, "");
-  }
-
-  return code;
-};
-
-File.prototype.addImport = function (source, name) {
-  name = name || source;
-  var id = this.dynamicImportIds[name];
-
-  if (!id) {
-    id = this.dynamicImportIds[name] = this.generateUidIdentifier(name);
-
-    var specifiers = [t.importSpecifier(t.identifier("default"), id)];
-    var declar = t.importDeclaration(specifiers, t.literal(source));
-    declar._blockHoist = 3;
-    this.dynamicImports.push(declar);
-  }
-
-  return id;
-};
-
-File.prototype.addHelper = function (name) {
-  if (!_.contains(File.helpers, name)) {
-    throw new ReferenceError("unknown declaration " + name);
-  }
-
-  var program = this.ast.program;
-
-  var declar = program._declarations && program._declarations[name];
-  if (declar) return declar.id;
-
-  var ref;
-  var runtimeNamespace = this.opts.runtime;
-  if (runtimeNamespace && !_.contains(File.excludeHelpersFromRuntime, name)) {
-    name = t.identifier(t.toIdentifier(name));
-    return t.memberExpression(t.identifier(runtimeNamespace), name);
-  } else {
-    ref = util.template(name);
-  }
-
-  var uid = this.generateUidIdentifier(name);
-  this.scope.push({
-    key: name,
-    id: uid,
-    init: ref
-  });
-  return uid;
-};
-
-File.prototype.errorWithNode = function (node, msg, Error) {
-  Error = Error || SyntaxError;
-
-  var loc = node.loc.start;
-  var err = new Error("Line " + loc.line + ": " + msg);
-  err.loc = loc;
-  return err;
-};
-
-File.prototype.addCode = function (code) {
-  code = (code || "") + "";
-  this.code = code;
-  return this.parseShebang(code);
-};
-
-File.prototype.parse = function (code) {
-  var self = this;
-
-  code = this.addCode(code);
-
-  return util.parse(this.opts, code, function (tree) {
-    self.transform(tree);
-    return self.generate();
-  });
-};
-
-File.prototype.transform = function (ast) {
-  var self = this;
-
-  this.ast = ast;
-  this.scope = new Scope(ast.program);
-  this.moduleFormatter = this.getModuleFormatter(this.opts.modules);
-
-  var astRun = function (key) {
-    _.each(self.transformers, function (transformer) {
-      transformer.astRun(self, key);
-    });
-  };
-
-  astRun("enter");
-
-  _.each(this.transformers, function (transformer) {
-    transformer.transform(self);
-  });
-
-  astRun("exit");
-};
-
-File.prototype.generate = function () {
-  var opts = this.opts;
-  var ast  = this.ast;
-
-  var result = {
-    code: "",
-    map: null,
-    ast: null
-  };
-
-  if (opts.ast) result.ast = ast;
-  if (!opts.code) return result;
-
-  var _result = generate(ast, opts, this.code);
-  result.code = _result.code;
-  result.map  = _result.map;
-
-  if (this.shebang) {
-    // add back shebang
-    result.code = this.shebang + "\n" + result.code;
-  }
-
-  if (opts.sourceMap === "inline") {
-    result.code += "\n" + util.sourceMapToComment(result.map);
-  }
-
-  return result;
-};
-
-File.prototype.generateUid = function (name, scope) {
-  name = t.toIdentifier(name).replace(/^_+/, "");
-
-  scope = scope || this.scope;
-
-  var uid;
-  do {
-    uid = this._generateUid(name);
-  } while (scope.has(uid));
-  return uid;
-};
-
-File.prototype.generateUidIdentifier = function (name, scope) {
-  return t.identifier(this.generateUid(name, scope));
-};
-
-File.prototype._generateUid = function (name) {
-  var uids = this.uids;
-  var i = uids[name] || 1;
-
-  var id = name;
-  if (i > 1) id += i;
-  uids[name] = i + 1;
-  return "_" + id;
-};

lib/6to5/generation/buffer.js

@@ -1,131 +0,0 @@
-module.exports = Buffer;
-
-var util = require("../util");
-var _    = require("lodash");
-
-function Buffer(position, format) {
-  this.position = position;
-  this._indent  = format.indent.base;
-  this.format   = format;
-  this.buf      = "";
-}
-
-Buffer.prototype.get = function () {
-  return util.trimRight(this.buf);
-};
-
-Buffer.prototype.getIndent = function () {
-  if (this.format.compact) {
-    return "";
-  } else {
-    return util.repeat(this._indent, this.format.indent.style);
-  }
-};
-
-Buffer.prototype.indentSize = function () {
-  return this.getIndent().length;
-};
-
-Buffer.prototype.indent = function () {
-  this._indent++;
-};
-
-Buffer.prototype.dedent = function () {
-  this._indent--;
-};
-
-Buffer.prototype.semicolon = function () {
-  this.push(";");
-};
-
-Buffer.prototype.ensureSemicolon = function () {
-  if (!this.isLast(";")) this.semicolon();
-};
-
-Buffer.prototype.rightBrace = function () {
-  this.newline(true);
-  this.push("}");
-};
-
-Buffer.prototype.keyword = function (name) {
-  this.push(name);
-  this.push(" ");
-};
-
-Buffer.prototype.space = function () {
-  if (this.buf && !this.isLast([" ", "\n"])) {
-    this.push(" ");
-  }
-};
-
-Buffer.prototype.removeLast = function (cha) {
-  if (!this.isLast(cha)) return;
-
-  this.buf = this.buf.substr(0, this.buf.length - 1);
-  this.position.unshift(cha);
-};
-
-Buffer.prototype.newline = function (i, removeLast) {
-  if (this.format.compact) return;
-
-  if (_.isBoolean(i)) {
-    removeLast = i;
-    i = null;
-  }
-
-  if (_.isNumber(i)) {
-    if (this.endsWith("{\n")) i--;
-    if (this.endsWith(util.repeat(i, "\n"))) return;
-
-    for (var j = 0; j < i; j++) {
-      this.newline(null, removeLast);
-    }
-    return;
-  }
-
-  if (removeLast && this.isLast("\n")) this.removeLast("\n");
-
-  this.removeLast(" ");
-
-  // remove whitespace if last character was a newline
-  this.buf = this.buf.replace(/\n +$/, "\n");
-
-  this._push("\n");
-};
-
-Buffer.prototype.push = function (str, noIndent) {
-  if (this._indent && !noIndent && str !== "\n") {
-    // we have an indent level and we aren't pushing a newline
-    var indent = this.getIndent();
-
-    // replace all newlines with newlines with the indentation
-    str = str.replace(/\n/g, "\n" + indent);
-
-    // we've got a newline before us so prepend on the indentation
-    if (this.isLast("\n")) str = indent + str;
-  }
-
-  this._push(str);
-};
-
-Buffer.prototype._push = function (str) {
-  this.position.push(str);
-  this.buf += str;
-};
-
-Buffer.prototype.endsWith = function (str) {
-  var d = this.buf.length - str.length;
-  return d >= 0 && this.buf.lastIndexOf(str) === d;
-};
-
-Buffer.prototype.isLast = function (cha, trimRight) {
-  var buf = this.buf;
-  if (trimRight) buf = util.trimRight(buf);
-  var last = buf[buf.length - 1];
-
-  if (Array.isArray(cha)) {
-    return _.contains(cha, last);
-  } else {
-    return cha === last;
-  }
-};

lib/6to5/generation/generator.js

@@ -1,327 +0,0 @@
-module.exports = function (ast, opts, code) {
-  var gen = new CodeGenerator(ast, opts, code);
-  return gen.generate();
-};
-
-module.exports.CodeGenerator = CodeGenerator;
-
-var Whitespace = require("./whitespace");
-var SourceMap  = require("./source-map");
-var Position   = require("./position");
-var Buffer     = require("./buffer");
-var util       = require("../util");
-var n          = require("./node");
-var t          = require("../types");
-var _          = require("lodash");
-
-function CodeGenerator(ast, opts, code) {
-  opts = opts || {};
-
-  this.comments = ast.comments || [];
-  this.tokens   = ast.tokens || [];
-  this.format   = CodeGenerator.normaliseOptions(opts);
-  this.ast      = ast;
-
-  this.whitespace = new Whitespace(this.tokens, this.comments);
-  this.position   = new Position;
-  this.map        = new SourceMap(this.position, opts, code);
-  this.buffer     = new Buffer(this.position, this.format);
-}
-
-_.each(Buffer.prototype, function (fn, key) {
-  CodeGenerator.prototype[key] = function () {
-    return fn.apply(this.buffer, arguments);
-  };
-});
-
-CodeGenerator.normaliseOptions = function (opts) {
-  return _.merge({
-    parentheses: true,
-    comments: opts.comments == null || opts.comments,
-    compact: false,
-    indent: {
-      adjustMultilineComment: true,
-      style: "  ",
-      base: 0
-    }
-  }, opts.format || {});
-};
-
-CodeGenerator.generators = {
-  templateLiterals: require("./generators/template-literals"),
-  comprehensions:   require("./generators/comprehensions"),
-  expressions:      require("./generators/expressions"),
-  statements:       require("./generators/statements"),
-  playground:       require("./generators/playground"),
-  classes:          require("./generators/classes"),
-  methods:          require("./generators/methods"),
-  modules:          require("./generators/modules"),
-  types:            require("./generators/types"),
-  flow:             require("./generators/flow"),
-  base:             require("./generators/base"),
-  jsx:              require("./generators/jsx")
-};
-
-_.each(CodeGenerator.generators, function (generator) {
-  _.extend(CodeGenerator.prototype, generator);
-});
-
-CodeGenerator.prototype.generate = function () {
-  var ast = this.ast;
-
-  this.print(ast);
-
-  var comments = [];
-  _.each(ast.comments, function (comment) {
-    if (!comment._displayed) comments.push(comment);
-  });
-  this._printComments(comments);
-
-  return {
-    map:  this.map.get(),
-    code: this.buffer.get()
-  };
-};
-
-CodeGenerator.prototype.buildPrint = function (parent) {
-  var self = this;
-
-  var print = function (node, opts) {
-    return self.print(node, parent, opts);
-  };
-
-  print.sequence = function (nodes, opts) {
-    opts = opts || {};
-    opts.statement = true;
-    return self.printJoin(print, nodes, opts);
-  };
-
-  print.join = function (nodes, opts) {
-    return self.printJoin(print, nodes, opts);
-  };
-
-  print.block = function (node) {
-    return self.printBlock(print, node);
-  };
-
-  print.indentOnComments = function (node) {
-    return self.printAndIndentOnComments(print, node);
-  };
-
-  return print;
-};
-
-CodeGenerator.prototype.print = function (node, parent, opts) {
-  if (!node) return "";
-
-  var self = this;
-
-  opts = opts || {};
-
-  var newline = function (leading) {
-    if (!opts.statement && !n.isUserWhitespacable(node, parent)) {
-      return;
-    }
-
-    var lines = 0;
-
-    if (node.start != null && !node._ignoreUserWhitespace) {
-      // user node
-      if (leading) {
-        lines = self.whitespace.getNewlinesBefore(node);
-      } else {
-        lines = self.whitespace.getNewlinesAfter(node);
-      }
-    } else {
-      // generated node
-      if (!leading) lines++; // always include at least a single line after
-
-      var needs = n.needsWhitespaceAfter;
-      if (leading) needs = n.needsWhitespaceBefore;
-      lines += needs(node, parent);
-
-      // generated nodes can't add starting file whitespace
-      if (!self.buffer.get()) lines = 0;
-    }
-
-    self.newline(lines);
-  };
-
-  if (this[node.type]) {
-    var needsNoLineTermParens = n.needsParensNoLineTerminator(node, parent);
-    var needsParens           = needsNoLineTermParens || n.needsParens(node, parent);
-
-    if (needsParens) this.push("(");
-    if (needsNoLineTermParens) this.indent();
-
-    this.printLeadingComments(node, parent);
-
-    newline(true);
-
-    if (opts.before) opts.before();
-    this.map.mark(node, "start");
-
-    this[node.type](node, this.buildPrint(node), parent);
-
-    if (needsNoLineTermParens) {
-      this.newline();
-      this.dedent();
-    }
-    if (needsParens) this.push(")");
-
-    this.map.mark(node, "end");
-    if (opts.after) opts.after();
-
-    newline(false);
-
-    this.printTrailingComments(node, parent);
-  } else {
-    throw new ReferenceError("unknown node of type " + JSON.stringify(node.type) + " with constructor " + JSON.stringify(node && node.constructor.name));
-  }
-};
-
-CodeGenerator.prototype.printJoin = function (print, nodes, opts) {
-  if (!nodes || !nodes.length) return;
-
-  opts = opts || {};
-
-  var self = this;
-  var len  = nodes.length;
-
-  if (opts.indent) self.indent();
-
-  _.each(nodes, function (node, i) {
-    print(node, {
-      statement: opts.statement,
-      after: function () {
-        if (opts.iterator) {
-          opts.iterator(node, i);
-        }
-
-        if (opts.separator && i < len - 1) {
-          self.push(opts.separator);
-        }
-      }
-    });
-  });
-
-  if (opts.indent) self.dedent();
-};
-
-CodeGenerator.prototype.printAndIndentOnComments = function (print, node) {
-  var indent = !!node.leadingComments;
-  if (indent) this.indent();
-  print(node);
-  if (indent) this.dedent();
-};
-
-CodeGenerator.prototype.printBlock = function (print, node) {
-  if (t.isEmptyStatement(node)) {
-    this.semicolon();
-  } else {
-    this.push(" ");
-    print(node);
-  }
-};
-
-CodeGenerator.prototype.generateComment = function (comment) {
-  var val = comment.value;
-  if (comment.type === "Line") {
-    val = "//" + val;
-  } else {
-    val = "/*" + val + "*/";
-  }
-  return val;
-};
-
-CodeGenerator.prototype.printTrailingComments = function (node, parent) {
-  this._printComments(this.getComments("trailingComments", node, parent));
-};
-
-CodeGenerator.prototype.printLeadingComments = function (node, parent) {
-  this._printComments(this.getComments("leadingComments", node, parent));
-};
-
-CodeGenerator.prototype.getComments = function (key, node, parent) {
-  if (t.isExpressionStatement(parent)) {
-    return [];
-  }
-
-  var comments = [];
-  var nodes    = [node];
-  var self     = this;
-
-  if (t.isExpressionStatement(node)) {
-    nodes.push(node.argument);
-  }
-
-  _.each(nodes, function (node) {
-    comments = comments.concat(self._getComments(key, node));
-  });
-
-  return comments;
-};
-
-CodeGenerator.prototype._getComments = function (key, node) {
-  return (node && node[key]) || [];
-};
-
-CodeGenerator.prototype._printComments = function (comments) {
-  if (this.format.compact) return;
-  if (!this.format.comments) return;
-  if (!comments || !comments.length) return;
-
-  var self = this;
-
-  _.each(comments, function (comment) {
-    var skip = false;
-
-    // find the original comment in the ast and set it as displayed
-    _.each(self.ast.comments, function (origComment) {
-      if (origComment.start === comment.start) {
-        // comment has already been output
-        if (origComment._displayed) skip = true;
-
-        origComment._displayed = true;
-        return false;
-      }
-    });
-
-    if (skip) return;
-
-    // whitespace before
-    self.newline(self.whitespace.getNewlinesBefore(comment));
-
-    var column = self.position.column;
-    var val    = self.generateComment(comment);
-
-    if (column && !self.isLast(["\n", " ", "[", "{"])) {
-      self._push(" ");
-      column++;
-    }
-
-    //
-
-    if (comment.type === "Block" && self.format.indent.adjustMultilineComment) {
-      var offset = comment.loc.start.column;
-      if (offset) {
-        var newlineRegex = new RegExp("\\n\\s{1," + offset + "}", "g");
-        val = val.replace(newlineRegex, "\n");
-      }
-
-      var indent = Math.max(self.indentSize(), column);
-      val = val.replace(/\n/g, "\n" + util.repeat(indent));
-    }
-
-    if (column === 0) {
-      val = self.getIndent() + val;
-    }
-
-    //
-
-    self._push(val);
-
-    // whitespace after
-    self.newline(self.whitespace.getNewlinesAfter(comment));
-  });
-};

lib/6to5/generation/generators/classes.js

@@ -1,40 +0,0 @@
-exports.ClassExpression =
-exports.ClassDeclaration = function (node, print) {
-  this.push("class");
-
-  if (node.id) {
-    this.space();
-    print(node.id);
-  }
-
-  if (node.superClass) {
-    this.push(" extends ");
-    print(node.superClass);
-  }
-
-  this.space();
-  print(node.body);
-};
-
-exports.ClassBody = function (node, print) {
-  if (node.body.length === 0) {
-    this.push("{}");
-  } else {
-    this.push("{");
-    this.newline();
-
-    this.indent();
-    print.sequence(node.body);
-    this.dedent();
-
-    this.rightBrace();
-  }
-};
-
-exports.MethodDefinition = function (node, print) {
-  if (node.static) {
-    this.push("static ");
-  }
-
-  this._method(node, print);
-};

lib/6to5/generation/generators/expressions.js

@@ -1,145 +0,0 @@
-var util = require("../../util");
-var t    = require("../../types");
-var _    = require("lodash");
-
-exports.UnaryExpression = function (node, print) {
-  var hasSpace = /[a-z]$/.test(node.operator);
-  var arg = node.argument;
-
-  if (t.isUpdateExpression(arg) || t.isUnaryExpression(arg)) {
-    hasSpace = true;
-  }
-
-  if (t.isUnaryExpression(arg) && arg.operator === "!") {
-    hasSpace = false;
-  }
-
-  this.push(node.operator);
-  if (hasSpace) this.space();
-  print(node.argument);
-};
-
-exports.UpdateExpression = function (node, print) {
-  if (node.prefix) {
-    this.push(node.operator);
-    print(node.argument);
-  } else {
-    print(node.argument);
-    this.push(node.operator);
-  }
-};
-
-exports.ConditionalExpression = function (node, print) {
-  print(node.test);
-  this.push(" ? ");
-  print(node.consequent);
-  this.push(" : ");
-  print(node.alternate);
-};
-
-exports.NewExpression = function (node, print) {
-  this.push("new ");
-  print(node.callee);
-  if (node.arguments.length || this.format.parentheses) {
-    this.push("(");
-    print.join(node.arguments, { separator: ", " });
-    this.push(")");
-  }
-};
-
-exports.SequenceExpression = function (node, print) {
-  print.join(node.expressions, { separator: ", " });
-};
-
-exports.ThisExpression = function () {
-  this.push("this");
-};
-
-exports.CallExpression = function (node, print) {
-  print(node.callee);
-
-  this.push("(");
-
-  var separator = ",";
-
-  if (node._prettyCall) {
-    separator += "\n";
-    this.newline();
-    this.indent();
-  } else {
-    separator += " ";
-  }
-
-  print.join(node.arguments, {
-    separator: separator
-  });
-
-  if (node._prettyCall) {
-    this.newline();
-    this.dedent();
-  }
-
-  this.push(")");
-};
-
-var buildYieldAwait = function (keyword) {
-  return function (node, print) {
-    this.push(keyword);
-    if (node.delegate) this.push("*");
-    if (node.argument) {
-      this.space();
-      print(node.argument);
-    }
-  };
-};
-
-exports.YieldExpression = buildYieldAwait("yield");
-exports.AwaitExpression = buildYieldAwait("await");
-
-exports.EmptyStatement = function () {
-  this.semicolon();
-};
-
-exports.ExpressionStatement = function (node, print) {
-  print(node.expression);
-  this.semicolon();
-};
-
-exports.BinaryExpression =
-exports.LogicalExpression =
-exports.AssignmentPattern =
-exports.AssignmentExpression = function (node, print) {
-  print(node.left);
-  this.push(" " + node.operator + " ");
-  print(node.right);
-};
-
-var SCIENTIFIC_NOTATION = /e/i;
-
-exports.MemberExpression = function (node, print) {
-  var obj = node.object;
-  print(obj);
-
-  if (!node.computed && t.isMemberExpression(node.property)) {
-    throw new TypeError("Got a MemberExpression for MemberExpression property");
-  }
-
-  var computed = node.computed;
-  if (t.isLiteral(node.property) && _.isNumber(node.property.value)) {
-    computed = true;
-  }
-
-  if (computed) {
-    this.push("[");
-    print(node.property);
-    this.push("]");
-  } else {
-    // 5..toFixed(2);
-    if (t.isLiteral(obj) && util.isInteger(obj.value) && !SCIENTIFIC_NOTATION.test(obj.value.toString())) {
-      this.push(".");
-    }
-
-    this.push(".");
-    print(node.property);
-  }
-};

lib/6to5/generation/generators/flow.js

@@ -1,3 +0,0 @@
-exports.ClassProperty = function () {
-  throw new Error("not implemented");
-};

lib/6to5/generation/generators/methods.js

@@ -1,82 +0,0 @@
-var t = require("../../types");
-
-exports._params = function (node, print) {
-  var self = this;
-
-  this.push("(");
-
-  print.join(node.params, {
-    separator: ", ",
-    iterator: function (param, i) {
-      var def = node.defaults && node.defaults[i];
-      if (def) {
-        self.push(" = ");
-        print(def);
-      }
-    }
-  });
-
-  if (node.rest) {
-    if (node.params.length) {
-      this.push(", ");
-    }
-
-    this.push("...");
-    print(node.rest);
-  }
-
-  this.push(")");
-};
-
-exports._method = function (node, print) {
-  var value = node.value;
-  var kind  = node.kind;
-  var key   = node.key;
-
-  if (!kind || kind === "init") {
-    if (value.generator) {
-      this.push("*");
-    }
-  } else {
-    this.push(kind + " ");
-  }
-
-  if (value.async) this.push("async ");
-
-  if (node.computed) {
-    this.push("[");
-    print(key);
-    this.push("]");
-  } else {
-    print(key);
-  }
-
-  this._params(value, print);
-  this.space();
-  print(value.body);
-};
-
-exports.FunctionDeclaration =
-exports.FunctionExpression = function (node, print) {
-  if (node.async) this.push("async ");
-  this.push("function");
-  if (node.generator) this.push("*");
-  this.space();
-  if (node.id) print(node.id);
-  this._params(node, print);
-  this.space();
-  print(node.body);
-};
-
-exports.ArrowFunctionExpression = function (node, print) {
-  if (node.async) this.push("async ");
-
-  if (node.params.length === 1 && !node.defaults.length && !node.rest && t.isIdentifier(node.params[0])) {
-    print(node.params[0]);
-  } else {
-    this._params(node, print);
-  }
-
-  this.push(" => ");
-  print(node.body);
-};

lib/6to5/generation/generators/modules.js

@@ -1,96 +0,0 @@
-var t = require("../../types");
-var _ = require("lodash");
-
-exports.ImportSpecifier = function (node, print) {
-  if (node.id && node.id.name === "default") {
-    print(node.name);
-  } else {
-    return exports.ExportSpecifier.apply(this, arguments);
-  }
-};
-
-exports.ExportSpecifier = function (node, print) {
-  print(node.id);
-  if (node.name) {
-    this.push(" as ");
-    print(node.name);
-  }
-};
-
-exports.ExportBatchSpecifier = function () {
-  this.push("*");
-};
-
-exports.ExportDeclaration = function (node, print) {
-  this.push("export ");
-
-  var specifiers = node.specifiers;
-
-  if (node.default) {
-    this.push("default ");
-  }
-
-  if (node.declaration) {
-    print(node.declaration);
-    if (t.isStatement(node.declaration)) return;
-  } else {
-    if (specifiers.length === 1 && t.isExportBatchSpecifier(specifiers[0])) {
-      print(specifiers[0]);
-    } else {
-      this.push("{");
-      if (specifiers.length) {
-        this.space();
-        print.join(specifiers, { separator: ", " });
-        this.space();
-      }
-      this.push("}");
-    }
-
-    if (node.source) {
-      this.push(" from ");
-      print(node.source);
-    }
-  }
-
-  this.ensureSemicolon();
-};
-
-exports.ImportDeclaration = function (node, print) {
-  var self = this;
-
-  this.push("import ");
-
-  var specfiers = node.specifiers;
-  if (specfiers && specfiers.length) {
-    var foundImportSpecifier = false;
-
-    _.each(node.specifiers, function (spec, i) {
-      if (+i > 0) {
-        self.push(", ");
-      }
-
-      var isDefault = spec.id && spec.id.name === "default";
-
-      if (!isDefault && spec.type !== "ImportBatchSpecifier" && !foundImportSpecifier) {
-        foundImportSpecifier = true;
-        self.push("{ ");
-      }
-
-      print(spec);
-    });
-
-    if (foundImportSpecifier) {
-      this.push(" }");
-    }
-
-    this.push(" from ");
-  }
-
-  print(node.source);
-  this.semicolon();
-};
-
-exports.ImportBatchSpecifier = function (node, print) {
-  this.push("* as ");
-  print(node.name);
-};

lib/6to5/generation/generators/playground.js

@@ -1,7 +0,0 @@
-var _ = require("lodash");
-
-_.each(["BindMemberExpression", "BindFunctionExpression"], function (type) {
-  exports[type] = function () {
-    throw new ReferenceError("Trying to render non-standard playground node " + JSON.stringify(type));
-  };
-});

lib/6to5/generation/generators/template-literals.js

@@ -1,30 +0,0 @@
-var _ = require("lodash");
-
-exports.TaggedTemplateExpression = function (node, print) {
-  print(node.tag);
-  print(node.quasi);
-};
-
-exports.TemplateElement = function (node) {
-  this._push(node.value.raw);
-};
-
-exports.TemplateLiteral = function (node, print) {
-  this.push("`");
-
-  var quasis = node.quasis;
-  var self   = this;
-  var len    = quasis.length;
-
-  _.each(quasis, function (quasi, i) {
-    print(quasi);
-
-    if (i + 1 < len) {
-      self.push("${ ");
-      print(node.expressions[i]);
-      self.push(" }");
-    }
-  });
-
-  this._push("`");
-};

lib/6to5/generation/generators/types.js

@@ -1,100 +0,0 @@
-var _ = require("lodash");
-
-exports.Identifier = function (node) {
-  this.push(node.name);
-};
-
-exports.SpreadElement =
-exports.SpreadProperty = function (node, print) {
-  this.push("...");
-  print(node.argument);
-};
-
-exports.VirtualPropertyExpression = function (node, print) {
-  print(node.object);
-  this.push("::");
-  print(node.property);
-};
-
-exports.ObjectExpression =
-exports.ObjectPattern = function (node, print) {
-  var props = node.properties;
-
-  if (props.length) {
-    this.push("{");
-    this.space();
-
-    print.join(props, { separator: ", ", indent: true });
-
-    this.space();
-    this.push("}");
-  } else {
-    this.push("{}");
-  }
-};
-
-exports.Property = function (node, print) {
-  if (node.method || node.kind === "get" || node.kind === "set") {
-    this._method(node, print);
-  } else {
-    if (node.computed) {
-      this.push("[");
-      print(node.key);
-      this.push("]");
-    } else {
-      print(node.key);
-      if (node.shorthand) return;
-    }
-
-    this.push(": ");
-    print(node.value);
-  }
-};
-
-exports.ArrayExpression =
-exports.ArrayPattern = function (node, print) {
-  var elems = node.elements;
-  var self  = this;
-  var len   = elems.length;
-
-  this.push("[");
-
-  _.each(elems, function (elem, i) {
-    if (!elem) {
-      // If the array expression ends with a hole, that hole
-      // will be ignored by the interpreter, but if it ends with
-      // two (or more) holes, we need to write out two (or more)
-      // commas so that the resulting code is interpreted with
-      // both (all) of the holes.
-      self.push(",");
-    } else {
-      if (i > 0) self.push(" ");
-      print(elem);
-      if (i < len - 1) self.push(",");
-    }
-  });
-
-  this.push("]");
-};
-
-exports.Literal = function (node) {
-  var val  = node.value;
-  var type = typeof val;
-
-  if (type === "string") {
-    val = JSON.stringify(val);
-
-    // escape illegal js but valid json unicode characters
-    val = val.replace(/[\u000A\u000D\u2028\u2029]/g, function (c) {
-      return "\\u" + ("0000" + c.charCodeAt(0).toString(16)).slice(-4);
-    });
-
-    this.push(val);
-  } else if (type === "boolean" || type === "number") {
-    this.push(JSON.stringify(val));
-  } else if (node.regex) {
-    this.push("/" + node.regex.pattern + "/" + node.regex.flags);
-  } else if (val === null) {
-    this.push("null");
-  }
-};

lib/6to5/generation/node/index.js

@@ -1,116 +0,0 @@
-module.exports = Node;
-
-var whitespace = require("./whitespace");
-var parens     = require("./parentheses");
-var t          = require("../../types");
-var _          = require("lodash");
-
-var find = function (obj, node, parent) {
-  if (!obj) return;
-  var result;
-
-  var types = Object.keys(obj);
-  for (var i = 0; i < types.length; i++) {
-    var type = types[i];
-
-    if (t["is" + type](node)) {
-      var fn = obj[type];
-      result = fn(node, parent);
-      if (result != null) break;
-    }
-  }
-
-  return result;
-};
-
-function Node(node, parent) {
-  this.parent = parent;
-  this.node   = node;
-}
-
-Node.prototype.isUserWhitespacable = function () {
-  return t.isUserWhitespacable(this.node);
-};
-
-Node.prototype.needsWhitespace = function (type) {
-  var parent = this.parent;
-  var node   = this.node;
-  if (!node) return 0;
-
-  if (t.isExpressionStatement(node)) {
-    node = node.expression;
-  }
-
-  var lines = find(whitespace[type].nodes, node, parent);
-  if (lines) return lines;
-
-  _.each(find(whitespace[type].list, node, parent), function (expr) {
-    lines = Node.needsWhitespace(expr, node, type);
-    if (lines) return false;
-  });
-  return lines || 0;
-};
-
-Node.prototype.needsWhitespaceBefore = function () {
-  return this.needsWhitespace("before");
-};
-
-Node.prototype.needsWhitespaceAfter = function () {
-  return this.needsWhitespace("after");
-};
-
-Node.prototype.needsParens = function () {
-  var parent = this.parent;
-  var node   = this.node;
-
-  if (!parent) return false;
-
-  if (t.isNewExpression(parent) && parent.callee === node) {
-    if (t.isCallExpression(node)) return true;
-
-    var hasCall = _.some(node, function (val) {
-      return t.isCallExpression(val);
-    });
-    if (hasCall) return true;
-  }
-
-  return find(parens, node, parent);
-};
-
-Node.prototype.needsParensNoLineTerminator = function () {
-  var parent = this.parent;
-  var node   = this.node;
-
-  if (!parent) return false;
-
-  // no comments
-  if (!node.leadingComments || !node.leadingComments.length) {
-    return false;
-  }
-
-  if (t.isYieldExpression(parent) || t.isAwaitExpression(parent)) {
-    return true;
-  }
-
-  if (t.isContinueStatement(parent) || t.isBreakStatement(parent) ||
-      t.isReturnStatement(parent) || t.isThrowStatement(parent)) {
-    return true;
-  }
-
-  return false;
-};
-
-_.each(Node.prototype, function (fn, key) {
-  Node[key] = function (node, parent) {
-    var n = new Node(node, parent);
-
-    // Avoid leaking arguments to prevent deoptimization
-    var skipCount = 2;
-    var args = new Array(arguments.length - skipCount);
-    for (var i = 0; i < args.length; i++) {
-      args[i] = arguments[i + 2];
-    }
-
-    return n[key].apply(n, args);
-  };
-});

lib/6to5/generation/node/whitespace.js

@@ -1,76 +0,0 @@
-var _ = require("lodash");
-var t = require("../../types");
-
-exports.before = {
-  nodes: {
-    Property: function (node, parent) {
-      if (parent.properties[0] === node) {
-        return 1;
-      }
-    },
-
-    SpreadProperty: function (node, parent) {
-      return exports.before.nodes.Property(node, parent);
-    },
-
-    SwitchCase: function (node, parent) {
-      if (parent.cases[0] === node) {
-        return 1;
-      }
-    },
-
-    CallExpression: function (node) {
-      if (t.isFunction(node.callee)) {
-        return 1;
-      }
-    }
-  }
-};
-
-exports.after = {
-  nodes: {
-    AssignmentExpression: function (node) {
-      if (t.isFunction(node.right)) {
-        return 1;
-      }
-    }
-  },
-
-  list: {
-    VariableDeclaration: function (node) {
-      return _.map(node.declarations, "init");
-    },
-
-    ArrayExpression: function (node) {
-      return node.elements;
-    },
-
-    ObjectExpression: function (node) {
-      return node.properties;
-    }
-  }
-};
-
-_.each({
-  Function: 1,
-  Class: 1,
-  For: 1,
-  ArrayExpression: { after: 1 },
-  ObjectExpression: { after: 1 },
-  SwitchStatement: 1,
-  IfStatement: { before: 1 },
-  CallExpression: { after: 1 },
-  Literal: { after: 1 }
-}, function (amounts, type) {
-  if (_.isNumber(amounts)) {
-    amounts = { after: amounts, before: amounts };
-  }
-
-  _.each([type].concat(t.FLIPPED_ALIAS_KEYS[type] || []), function (type) {
-    _.each(amounts, function (amount, key) {
-      exports[key].nodes[type] = function () {
-        return amount;
-      };
-    });
-  });
-});

lib/6to5/generation/position.js

@@ -1,27 +0,0 @@
-module.exports = Position;
-
-function Position() {
-  this.line = 1;
-  this.column = 0;
-}
-
-Position.prototype.push = function (str) {
-  for (var i = 0; i < str.length; i++) {
-    if (str[i] === "\n") {
-      this.line++;
-      this.column = 0;
-    } else {
-      this.column++;
-    }
-  }
-};
-
-Position.prototype.unshift = function (str) {
-  for (var i = 0; i < str.length; i++) {
-    if (str[i] === "\n") {
-      this.line--;
-    } else {
-      this.column--;
-    }
-  }
-};

lib/6to5/generation/source-map.js

@@ -1,56 +0,0 @@
-module.exports = SourceMap;
-
-var sourceMap = require("source-map");
-var t         = require("../types");
-
-function SourceMap(position, opts, code) {
-  this.position = position;
-  this.opts     = opts;
-
-  if (opts.sourceMap) {
-    this.map = new sourceMap.SourceMapGenerator({
-      file: opts.sourceMapName,
-      sourceRoot: opts.sourceRoot
-    });
-
-    this.map.setSourceContent(opts.sourceFileName, code);
-  } else {
-    this.map = null;
-  }
-}
-
-SourceMap.prototype.get = function () {
-  var map = this.map;
-  if (map) {
-    return map.toJSON();
-  } else {
-    return map;
-  }
-};
-
-SourceMap.prototype.mark = function (node, type) {
-  var loc = node.loc;
-  if (!loc) return; // no location info
-
-  var map = this.map;
-  if (!map) return; // no source map
-
-  if (t.isProgram(node) || t.isFile(node)) return; // illegal mapping nodes
-
-  var position = this.position;
-
-  var generated = {
-    line: position.line,
-    column: position.column
-  };
-
-  var original = loc[type];
-
-  if (generated.line === original.line && generated.column === original.column) return; // nothing to map
-
-  map.addMapping({
-    source: this.opts.sourceFileName,
-    generated: generated,
-    original: original
-  });
-};

lib/6to5/generation/whitespace.js

@@ -1,68 +0,0 @@
-module.exports = Whitespace;
-
-var _ = require("lodash");
-
-function Whitespace(tokens, comments) {
-  this.tokens = _.sortBy(tokens.concat(comments), "start");
-  this.used   = [];
-}
-
-Whitespace.prototype.getNewlinesBefore = function (node) {
-  var startToken;
-  var endToken;
-  var tokens = this.tokens;
-  var token;
-
-  for (var i = 0; i < tokens.length; i++) {
-    token = tokens[i];
-
-    // this is the token this node starts with
-    if (node.start === token.start) {
-      startToken = tokens[i - 1];
-      endToken = token;
-      break;
-    }
-  }
-
-  return this.getNewlinesBetween(startToken, endToken);
-};
-
-Whitespace.prototype.getNewlinesAfter = function (node) {
-  var startToken;
-  var endToken;
-  var tokens = this.tokens;
-  var token;
-
-  for (var i = 0; i < tokens.length; i++) {
-    token = tokens[i];
-
-    // this is the token this node ends with
-    if (node.end === token.end) {
-      startToken = token;
-      endToken = tokens[i + 1];
-      break;
-    }
-  }
-
-  if (endToken.type.type === "eof") {
-    return 1;
-  } else {
-    return this.getNewlinesBetween(startToken, endToken);
-  }
-};
-
-Whitespace.prototype.getNewlinesBetween = function (startToken, endToken) {
-  var start = startToken ? startToken.loc.end.line : 1;
-  var end   = endToken.loc.start.line;
-
-  var lines = 0;
-
-  for (var line = start; line < end; line++) {
-    if (!_.contains(this.used, line)) {
-      this.used.push(line);
-      lines++;
-    }
-  }
-
-  return lines;
-};

lib/6to5/index.js

@@ -1,56 +0,0 @@
-var transform = require("./transformation/transform");
-var util      = require("./util");
-var fs        = require("fs");
-var _         = require("lodash");
-
-exports.version = require("../../package").version;
-
-exports.types = require("./types");
-
-exports.runtime = require("./runtime-generator");
-
-exports.register = function (opts) {
-  var register = require("./register");
-  if (opts != null) register(opts);
-  return register;
-};
-
-exports.polyfill = function () {
-  require("./polyfill");
-};
-
-exports.canCompile = util.canCompile;
-
-// do not use this - this is for use by official maintained 6to5 plugins
-exports._util = util;
-
-exports.transform = transform;
-
-exports.transformFile = function (filename, opts, callback) {
-  if (_.isFunction(opts)) {
-    callback = opts;
-    opts = {};
-  }
-
-  opts.filename = filename;
-
-  fs.readFile(filename, function (err, code) {
-    if (err) return callback(err);
-
-    var result;
-
-    try {
-      result = transform(code, opts);
-    } catch (err) {
-      return callback(err);
-    }
-
-    callback(null, result);
-  });
-};
-
-exports.transformFileSync = function (filename, opts) {
-  opts = opts || {};
-  opts.filename = filename;
-  return transform(fs.readFileSync(filename), opts);
-};

lib/6to5/patch.js

@@ -1,53 +0,0 @@
-var t = require("./types");
-var _ = require("lodash");
-
-// estraverse
-
-var estraverse = require("estraverse");
-_.extend(estraverse.VisitorKeys, t.VISITOR_KEYS);
-
-// regenerator/recast/ast-types
-
-var types = require("ast-types");
-var def   = types.Type.def;
-var or    = types.Type.or;
-
-def("AssignmentPattern")
-    .bases("Pattern")
-    .build("left", "right")
-    .field("left", def("Pattern"))
-    .field("right", def("Expression"));
-
-// Acorn - Same as ImportNamespaceSpecifier but `id` is `name`
-def("ImportBatchSpecifier")
-  .bases("Specifier")
-  .build("name")
-  .field("name", def("Identifier"));
-
-// Abstract references
-def("VirtualPropertyExpression")
-  .bases("Expression")
-  .build("object", "property")
-  .field("object", def("Expression"))
-  .field("property", or(def("Identifier"), def("Expression")));
-
-def("PrivateDeclaration")
-  .bases("Declaration")
-  .build("declarations")
-  .field("declarations", [def("Identifier")]);
-
-// Playground
-def("BindMemberExpression")
-  .bases("Expression")
-  .build("object", "property", "arguments")
-  .field("object", def("Expression"))
-  .field("property", or(def("Identifier"), def("Expression")))
-  .field("arguments", [def("Expression")]);
-
-def("BindFunctionExpression")
-  .bases("Expression")
-  .build("callee", "arguments")
-  .field("callee", def("Expression"))
-  .field("arguments", [def("Expression")]);
-
-types.finalize();

lib/6to5/polyfill.js

@@ -1,2 +0,0 @@
-require("core-js/shim");
-require("regenerator/runtime");

lib/6to5/register.js

@@ -1,148 +0,0 @@
-require("./polyfill");
-
-var sourceMapSupport = require("source-map-support");
-var roadrunner       = require("roadrunner");
-var util             = require("./util");
-var to5              = require("./index");
-var fs               = require("fs");
-var _                = require("lodash");
-
-sourceMapSupport.install({
-  retrieveSourceMap: function (source) {
-    var map = maps && maps[source];
-    if (map) {
-      return {
-        url: null,
-        map: map
-      };
-    } else {
-      return null;
-    }
-  }
-});
-
-//
-
-var blacklist  = [];
-
-var blacklistTest = function (transformer, code) {
-  try {
-    if (_.isFunction(code)) {
-      code();
-    } else {
-      new Function(code);
-    }
-    blacklist.push(transformer);
-  } catch (err) {
-    if (err.name !== "SyntaxError") throw err;
-  }
-};
-
-blacklistTest("arrayComprehension", "var foo = [for (foo of bar) foo * foo];");
-blacklistTest("generatorComprehension", "var foo = (for (foo of bar) foo * foo)");
-blacklistTest("arrowFunctions", "var foo = x => x * x;");
-blacklistTest("classes", "class Foo {}");
-blacklistTest("computedPropertyNames", "var foo = { [foo]: bar };");
-blacklistTest("constants", function () {
-  try {
-    new Function("const foo = 'foo';\nfoo = 'wow';");
-  } catch (err) {
-    return; // constants are supported
-  }
-  throw new SyntaxError;
-});
-blacklistTest("defaultParamaters", "var foo = function (bar = 0) {};");
-blacklistTest("destructuring", "var { x, y } = { x: 0, y: 0 };");
-blacklistTest("forOf", "for (var foo of bar) {}");
-blacklistTest("generators", "function* foo() {}\nasync function bar() {}"); // generators/async functions delegated to same transformer
-blacklistTest("letScoping", "let foo = 0;");
-blacklistTest("modules", 'import foo from "from";');
-blacklistTest("propertyMethodAssignment", "{ get foo() {} }");
-blacklistTest("propertyNameShorthand", "var foo = { x, y };");
-blacklistTest("restParameters", "function foo(...bar) {}");
-blacklistTest("spread", "foo(...bar);");
-blacklistTest("templateLiterals", "var foo = `foo`;");
-blacklistTest("unicodeRegex", function () { new RegExp("foo", "u"); });
-
-//
-
-var transformOpts = {};
-var ignoreRegex   = /node_modules/;
-var onlyRegex;
-var whitelist     = [];
-var cache;
-var exts          = {};
-var maps          = {};
-var old           = require.extensions[".js"];
-
-var mtime = function (filename) {
-  return +fs.statSync(filename).mtime;
-};
-
-var loader = function (m, filename) {
-  if ((ignoreRegex && ignoreRegex.test(filename)) || (onlyRegex && !onlyRegex.test(filename))) {
-    return old.apply(this, arguments);
-  }
-
-  var result;
-
-  if (cache) {
-    var cached = cache[filename];
-    if (cached && cached.mtime === mtime(filename)) {
-      result = cached;
-    }
-  }
-
-  result = result || to5.transformFileSync(filename, _.extend({
-    whitelist: whitelist,
-    blacklist: blacklist,
-    sourceMap: true,
-    ast:       false
-  }, transformOpts));
-
-  if (cache) {
-    result.mtime = mtime(filename);
-    cache[filename] = result;
-  }
-
-  maps[filename] = result.map;
-
-  m._compile(result.code, filename);
-};
-
-var hookExtensions = function (_exts) {
-  _.each(exts, function (old, ext) {
-    require.extensions[ext] = old;
-  });
-
-  exts = {};
-
-  _.each(_exts, function (ext) {
-    exts[ext] = require.extensions[ext];
-    require.extensions[ext] = loader;
-  });
-};
-
-hookExtensions([".es6", ".es", ".js"]);
-
-module.exports = function (opts) {
-  // normalise options
-  opts = opts || {};
-  if (_.isRegExp(opts)) opts = { ignore: opts };
-  if (opts.ignoreRegex != null) opts.ignore = opts.ignoreRegex;
-
-  if (opts.only != null) onlyRegex = util.regexify(opts.only);
-  if (opts.ignore != null) ignoreRegex = util.regexify(opts.ignore);
-
-  if (opts.extensions) hookExtensions(util.arrayify(opts.extensions));
-
-  if (opts.cache) cache = opts.cache;
-  if (opts.cache === false) cache = null;
-  if (opts.cache === true) {
-    roadrunner.load();
-    roadrunner.setup();
-    cache = roadrunner.get("6to5");
-  }
-
-  _.extend(transformOpts, opts);
-};

lib/6to5/runtime-generator.js

@@ -1,33 +0,0 @@
-var generator = require("./generation/generator");
-var util      = require("./util");
-var File      = require("./file");
-var t         = require("./types");
-var _         = require("lodash");
-
-module.exports = function (namespace) {
-  namespace = t.identifier(t.toIdentifier(namespace || "to5Runtime"));
-
-  var body      = [];
-  var container = t.functionExpression(null, [t.identifier("global")], t.blockStatement(body));
-  var tree      = t.program([t.expressionStatement(t.callExpression(container, [util.template("self-global")]))]);
-
-  body.push(t.variableDeclaration("var", [
-    t.variableDeclarator(
-      namespace,
-      t.assignmentExpression("=", t.memberExpression(t.identifier("global"), namespace), t.objectExpression([]))
-    )
-  ]));
-
-  _.each(File.helpers, function (name) {
-    if (_.contains(File.excludeHelpersFromRuntime, name)) {
-      return;
-    }
-
-    var key = t.identifier(t.toIdentifier(name));
-    body.push(t.expressionStatement(
-      t.assignmentExpression("=", t.memberExpression(namespace, key), util.template(name))
-    ));
-  });
-
-  return generator(tree).code;
-};

lib/6to5/transformation/modules/_default.js

@@ -1,270 +0,0 @@
-module.exports = DefaultFormatter;
-
-var traverse = require("../../traverse");
-var util     = require("../../util");
-var t        = require("../../types");
-var _        = require("lodash");
-
-function DefaultFormatter(file) {
-  this.file = file;
-
-  this.localExports = this.getLocalExports();
-  this.localImports = this.getLocalImports();
-
-  this.remapAssignments();
-
-  //this.checkCollisions();
-}
-
-DefaultFormatter.prototype.getLocalExports = function () {
-  var localExports = {};
-
-  traverse(this.file.ast, {
-    enter: function (node) {
-      var declar = node && node.declaration;
-      if (t.isExportDeclaration(node) && declar && t.isStatement(declar)) {
-        _.extend(localExports, t.getIds(declar, true));
-      }
-    }
-  });
-
-  return localExports;
-};
-
-DefaultFormatter.prototype.getLocalImports = function () {
-  var localImports = {};
-
-  traverse(this.file.ast, {
-    enter: function (node) {
-      if (t.isImportDeclaration(node)) {
-        _.extend(localImports, t.getIds(node, true));
-      }
-    }
-  });
-
-  return localImports;
-};
-
-DefaultFormatter.prototype.checkCollisions = function () {
-  // todo: all check export collissions
-
-  var localImports = this.localImports;
-  var file = this.file;
-
-  var isLocalReference = function (node) {
-    return t.isIdentifier(node) && _.has(localImports, node.name) && localImports[node.name] !== node;
-  };
-
-  var check = function (node) {
-    if (isLocalReference(node)) {
-      throw file.errorWithNode(node, "Illegal assignment of module import");
-    }
-  };
-
-  traverse(file.ast, {
-    enter: function (node) {
-      if (t.isAssignmentExpression(node)) {
-
-        var left = node.left;
-        if (t.isMemberExpression(left)) {
-          while (left.object) left = left.object;
-        }
-
-        check(left);
-      } else if (t.isDeclaration(node)) {
-        _.each(t.getIds(node, true), check);
-      }
-    }
-  });
-};
-
-DefaultFormatter.prototype.remapExportAssignment = function (node) {
-  return t.assignmentExpression(
-    "=",
-    node.left,
-    t.assignmentExpression(
-      node.operator,
-      t.memberExpression(t.identifier("exports"), node.left),
-      node.right
-    )
-  );
-};
-
-DefaultFormatter.prototype.remapAssignments = function () {
-  var localExports = this.localExports;
-  var self = this;
-
-  var isLocalReference = function (node, scope) {
-    var name = node.name;
-    return t.isIdentifier(node) && localExports[name] && localExports[name] === scope.get(name, true);
-  };
-
-  traverse(this.file.ast, {
-    enter: function (node, parent, scope) {
-      if (t.isUpdateExpression(node) && isLocalReference(node.argument, scope)) {
-        this.skip();
-
-        // expand to long file assignment expression
-        var assign = t.assignmentExpression(node.operator[0] + "=", node.argument, t.literal(1));
-
-        // remap this assignment expression
-        var remapped = self.remapExportAssignment(assign);
-
-        // we don't need to change the result
-        if (t.isExpressionStatement(parent) || node.prefix) {
-          return remapped;
-        }
-
-        var nodes = [];
-        nodes.push(remapped);
-
-        var operator;
-        if (node.operator === "--") {
-          operator = "+";
-        } else { // "++"
-          operator = "-";
-        }
-        nodes.push(t.binaryExpression(operator, node.argument, t.literal(1)));
-
-        return t.sequenceExpression(nodes);
-      }
-
-      if (t.isAssignmentExpression(node) && isLocalReference(node.left, scope)) {
-        this.skip();
-        return self.remapExportAssignment(node);
-      }
-    }
-  });
-};
-
-DefaultFormatter.prototype.getModuleName = function () {
-  var opts = this.file.opts;
-  var filenameRelative = opts.filenameRelative;
-  var moduleName = "";
-
-  if (opts.moduleRoot) {
-    moduleName = opts.moduleRoot + "/";
-  }
-
-  if (!opts.filenameRelative) {
-    return moduleName + opts.filename.replace(/^\//, "");
-  }
-
-  if (opts.sourceRoot) {
-    // remove sourceRoot from filename
-    var sourceRootRegEx = new RegExp("^" + opts.sourceRoot + "\/?");
-    filenameRelative = filenameRelative.replace(sourceRootRegEx, "");
-  }
-
-  if (!opts.keepModuleIdExtensions) {
-    // remove extension
-    filenameRelative = filenameRelative.replace(/\.(.*?)$/, "");
-  }
-
-  moduleName += filenameRelative;
-
-  // normalise path separators
-  moduleName = moduleName.replace(/\\/g, "/");
-
-  return moduleName;
-};
-
-DefaultFormatter.prototype._pushStatement = function (ref, nodes) {
-  if (t.isClass(ref) || t.isFunction(ref)) {
-    if (ref.id) {
-      nodes.push(t.toStatement(ref));
-      ref = ref.id;
-    }
-  }
-
-  return ref;
-};
-
-DefaultFormatter.prototype._hoistExport = function (declar, assign, priority) {
-  if (t.isFunctionDeclaration(declar)) {
-    assign._blockHoist = priority || 2;
-  }
-
-  return assign;
-};
-
-DefaultFormatter.prototype._exportSpecifier = function (getRef, specifier, node, nodes) {
-  var inherits = false;
-  if (node.specifiers.length === 1) inherits = node;
-
-  if (node.source) {
-    if (t.isExportBatchSpecifier(specifier)) {
-      // export * from "foo";
-      nodes.push(this._exportsWildcard(getRef(), node));
-    } else {
-      var ref;
-      if (t.isSpecifierDefault(specifier) && !this.noInteropRequire) {
-        // importing a default so we need to normalise it
-        ref = t.callExpression(this.file.addHelper("interop-require"), [getRef()]);
-      } else {
-        ref = t.memberExpression(getRef(), specifier.id);
-      }
-
-      // export { foo } from "test";
-      nodes.push(this._exportsAssign(
-        t.getSpecifierName(specifier),
-        ref,
-        node
-      ));
-    }
-  } else {
-    // export { foo };
-    nodes.push(this._exportsAssign(t.getSpecifierName(specifier), specifier.id, node));
-  }
-};
-
-DefaultFormatter.prototype._exportsWildcard = function (objectIdentifier) {
-  return t.expressionStatement(t.callExpression(this.file.addHelper("defaults"), [
-    t.identifier("exports"),
-    t.callExpression(this.file.addHelper("interop-require-wildcard"), [objectIdentifier])
-  ]));
-};
-
-DefaultFormatter.prototype._exportsAssign = function (id, init) {
-  return util.template("exports-assign", {
-    VALUE: init,
-    KEY:   id
-  }, true);
-};
-
-DefaultFormatter.prototype.exportDeclaration = function (node, nodes) {
-  var declar = node.declaration;
-
-  var id = declar.id;
-
-  if (node.default) {
-    id = t.identifier("default");
-  }
-
-  var assign;
-
-  if (t.isVariableDeclaration(declar)) {
-    for (var i in declar.declarations) {
-      var decl = declar.declarations[i];
-
-      decl.init = this._exportsAssign(decl.id, decl.init, node).expression;
-
-      var newDeclar = t.variableDeclaration(declar.kind, [decl]);
-      if (i === "0") t.inherits(newDeclar, declar);
-      nodes.push(newDeclar);
-    }
-  } else {
-    var ref = declar;
-
-    if (t.isFunctionDeclaration(declar) || t.isClassDeclaration(declar)) {
-      ref = declar.id;
-      nodes.push(declar);
-    }
-
-    assign = this._exportsAssign(id, ref, node);
-
-    nodes.push(assign);
-
-    this._hoistExport(declar, assign);
-  }
-};

lib/6to5/transformation/modules/_strict.js

@@ -1,12 +0,0 @@
-var util = require("../../util");
-
-module.exports = function (Parent) {
-  var Constructor = function () {
-    this.noInteropExport = true;
-    Parent.apply(this, arguments);
-  };
-
-  util.inherits(Constructor, Parent);
-
-  return Constructor;
-};

lib/6to5/transformation/modules/amd-strict.js

@@ -1 +0,0 @@
-module.exports = require("./_strict")(require("./amd"));

lib/6to5/transformation/modules/amd.js

@@ -1,116 +0,0 @@
-module.exports = AMDFormatter;
-
-var DefaultFormatter = require("./_default");
-var CommonFormatter  = require("./common");
-var util             = require("../../util");
-var t                = require("../../types");
-var _                = require("lodash");
-
-function AMDFormatter() {
-  CommonFormatter.apply(this, arguments);
-  this.ids = {};
-}
-
-util.inherits(AMDFormatter, DefaultFormatter);
-
-AMDFormatter.prototype.buildDependencyLiterals = function () {
-  var names = [];
-  for (var name in this.ids) {
-    names.push(t.literal(name));
-  }
-  return names;
-};
-
-/**
- * Wrap the entire body in a `define` wrapper.
- */
-
-AMDFormatter.prototype.transform = function (ast) {
-  var program = ast.program;
-  var body    = program.body;
-
-  // build an array of module names
-
-  var names = [t.literal("exports")];
-  if (this.passModuleArg) names.push(t.literal("module"));
-  names = names.concat(this.buildDependencyLiterals());
-  names = t.arrayExpression(names);
-
-  // build up define container
-
-  var params = _.values(this.ids);
-  if (this.passModuleArg) params.unshift(t.identifier("module"));
-  params.unshift(t.identifier("exports"));
-
-  var container = t.functionExpression(null, params, t.blockStatement(body));
-
-  var defineArgs = [names, container];
-  var moduleName = this.getModuleName();
-  if (moduleName) defineArgs.unshift(t.literal(moduleName));
-
-  var call = t.callExpression(t.identifier("define"), defineArgs);
-
-  program.body = [t.expressionStatement(call)];
-};
-
-/**
- * Get the AMD module name that we'll prepend to the wrapper
- * to define this module
- */
-
-AMDFormatter.prototype.getModuleName = function () {
-  if (this.file.opts.moduleIds) {
-    return DefaultFormatter.prototype.getModuleName.apply(this, arguments);
-  } else {
-    return null;
-  }
-};
-
-AMDFormatter.prototype._push = function (node) {
-  var id  = node.source.value;
-  var ids = this.ids;
-
-  if (ids[id]) {
-    return ids[id];
-  } else {
-    return this.ids[id] = this.file.generateUidIdentifier(id);
-  }
-};
-
-AMDFormatter.prototype.importDeclaration = function (node) {
-  this._push(node);
-};
-
-AMDFormatter.prototype.importSpecifier = function (specifier, node, nodes) {
-  var key = t.getSpecifierName(specifier);
-  var ref = this._push(node);
-
-  if (t.isImportBatchSpecifier(specifier)) {
-    // import * as bar from "foo";
-  } else if (t.isSpecifierDefault(specifier) && !this.noInteropRequire) {
-    // import foo from "foo";
-    ref = t.callExpression(this.file.addHelper("interop-require"), [ref]);
-  } else {
-    // import {foo} from "foo";
-    ref = t.memberExpression(ref, specifier.id, false);
-  }
-
-  nodes.push(t.variableDeclaration("var", [
-    t.variableDeclarator(key, ref)
-  ]));
-};
-
-AMDFormatter.prototype.exportDeclaration = function (node) {
-  if (node.default && !this.noInteropExport) {
-    this.passModuleArg = true;
-  }
-
-  CommonFormatter.prototype.exportDeclaration.apply(this, arguments);
-};
-
-AMDFormatter.prototype.exportSpecifier = function (specifier, node, nodes) {
-  var self = this;
-  return this._exportSpecifier(function () {
-    return self._push(node);
-  }, specifier, node, nodes);
-};

lib/6to5/transformation/modules/common-strict.js

@@ -1 +0,0 @@
-module.exports = require("./_strict")(require("./common"));

lib/6to5/transformation/modules/common.js

@@ -1,105 +0,0 @@
-module.exports = CommonJSFormatter;
-
-var DefaultFormatter = require("./_default");
-var traverse         = require("../../traverse");
-var util             = require("../../util");
-var t                = require("../../types");
-
-function CommonJSFormatter(file) {
-  DefaultFormatter.apply(this, arguments);
-
-  var hasNonDefaultExports = false;
-  traverse(file.ast, {
-    enter: function (node) {
-      if (t.isExportDeclaration(node) && !node.default) hasNonDefaultExports = true;
-    }
-  });
-  this.hasNonDefaultExports = hasNonDefaultExports;
-}
-
-util.inherits(CommonJSFormatter, DefaultFormatter);
-
-CommonJSFormatter.prototype.importSpecifier = function (specifier, node, nodes) {
-  var variableName = t.getSpecifierName(specifier);
-
-  // import foo from "foo";
-  if (t.isSpecifierDefault(specifier)) {
-    nodes.push(t.variableDeclaration("var", [
-      t.variableDeclarator(variableName,
-        t.callExpression(this.file.addHelper("interop-require"), [util.template("require", {
-          MODULE_NAME: node.source
-        })])
-      )
-    ]));
-  } else {
-    if (specifier.type === "ImportBatchSpecifier") {
-      // import * as bar from "foo";
-      nodes.push(t.variableDeclaration("var", [
-        t.variableDeclarator(
-          variableName,
-          t.callExpression(this.file.addHelper("interop-require-wildcard"), [
-            t.callExpression(t.identifier("require"), [node.source])
-          ])
-        )
-      ]));
-    } else {
-      // import foo from "foo";
-      nodes.push(util.template("require-assign-key", {
-        VARIABLE_NAME: variableName,
-        MODULE_NAME:   node.source,
-        KEY:           specifier.id
-      }));
-    }
-  }
-};
-
-CommonJSFormatter.prototype.importDeclaration = function (node, nodes) {
-  // import "foo";
-  nodes.push(util.template("require", {
-    MODULE_NAME: node.source
-  }, true));
-};
-
-CommonJSFormatter.prototype.exportDeclaration = function (node, nodes) {
-  if (node.default && !this.noInteropRequire && !this.noInteropExport) {
-    var declar = node.declaration;
-    var assign;
-
-    // module.exports = VALUE;
-    var templateName = "exports-default-module";
-
-    // exports = module.exports = VALUE;
-    if (this.hasNonDefaultExports) templateName = "exports-default-module-override";
-
-    if (t.isFunctionDeclaration(declar) || !this.hasNonDefaultExports) {
-      assign = util.template(templateName, {
-        VALUE: this._pushStatement(declar, nodes)
-      }, true);
-
-      // hoist to the top if this default is a function
-      nodes.push(this._hoistExport(declar, assign, 3));
-      return;
-    } else {
-      // this export isn't a function so we can't hoist it to the top so we need to set it
-      // at the very end of the file with something like:
-      //
-      //   module.exports = _extends(exports["default"], exports)
-      //
-
-      assign = util.template("common-export-default-assign", {
-        EXTENDS_HELPER: this.file.addHelper("extends")
-      }, true);
-      assign._blockHoist = 0;
-
-      nodes.push(assign);
-    }
-  }
-
-  DefaultFormatter.prototype.exportDeclaration.apply(this, arguments);
-};
-
-CommonJSFormatter.prototype.exportSpecifier = function (specifier, node, nodes) {
-  this._exportSpecifier(function () {
-    return t.callExpression(t.identifier("require"), [node.source]);
-  }, specifier, node, nodes);
-};

lib/6to5/transformation/modules/ignore.js

@@ -1,18 +0,0 @@
-module.exports = IgnoreFormatter;
-
-var t = require("../../types");
-
-function IgnoreFormatter() {
-
-}
-
-IgnoreFormatter.prototype.exportDeclaration = function (node, nodes) {
-  var declar = t.toStatement(node.declaration, true);
-  if (declar) nodes.push(t.inherits(declar, node));
-};
-
-IgnoreFormatter.prototype.importDeclaration =
-IgnoreFormatter.prototype.importSpecifier =
-IgnoreFormatter.prototype.exportSpecifier = function () {
-
-};

lib/6to5/transformation/modules/system.js

@@ -1,179 +0,0 @@
-module.exports = SystemFormatter;
-
-var AMDFormatter = require("./amd");
-var useStrict    = require("../transformers/use-strict");
-var traverse     = require("../../traverse");
-var util         = require("../../util");
-var t            = require("../../types");
-var _            = require("lodash");
-
-function SystemFormatter(file) {
-  this.exportIdentifier  = file.generateUidIdentifier("export");
-  this.noInteropRequire = true;
-
-  AMDFormatter.apply(this, arguments);
-}
-
-util.inherits(SystemFormatter, AMDFormatter);
-
-SystemFormatter.prototype._addImportSource = function (node, exportNode) {
-  node._importSource = exportNode.source && exportNode.source.value;
-  return node;
-};
-
-SystemFormatter.prototype._exportsWildcard = function (objectIdentifier, node) {
-  var leftIdentifier = this.file.generateUidIdentifier("key");
-  var valIdentifier  = t.memberExpression(objectIdentifier, leftIdentifier, true);
-
-  var left = t.variableDeclaration("var", [
-    t.variableDeclarator(leftIdentifier)
-  ]);
-
-  var right = objectIdentifier;
-
-  var block = t.blockStatement([
-    t.expressionStatement(this.buildExportCall(leftIdentifier, valIdentifier))
-  ]);
-
-  return this._addImportSource(t.forInStatement(left, right, block), node);
-};
-
-SystemFormatter.prototype._exportsAssign = function (id, init, node) {
-  var call = this.buildExportCall(t.literal(id.name), init, true);
-  return this._addImportSource(call, node);
-};
-
-SystemFormatter.prototype.remapExportAssignment = function (node) {
-  return this.buildExportCall(t.literal(node.left.name), node);
-};
-
-SystemFormatter.prototype.buildExportCall = function (id, init, isStatement) {
-  var call = t.callExpression(this.exportIdentifier, [id, init]);
-  if (isStatement) {
-    return t.expressionStatement(call);
-  } else {
-    return call;
-  }
-};
-
-SystemFormatter.prototype.importSpecifier = function (specifier, node, nodes) {
-  AMDFormatter.prototype.importSpecifier.apply(this, arguments);
-  this._addImportSource(_.last(nodes), node);
-};
-
-SystemFormatter.prototype.buildRunnerSetters = function (block, hoistDeclarators) {
-  return t.arrayExpression(_.map(this.ids, function (uid, source) {
-    var nodes = [];
-
-    traverse(block, {
-      enter: function (node) {
-        if (node._importSource === source) {
-          if (t.isVariableDeclaration(node)) {
-            _.each(node.declarations, function (declar) {
-              hoistDeclarators.push(t.variableDeclarator(declar.id));
-              nodes.push(t.expressionStatement(
-                t.assignmentExpression("=", declar.id, declar.init)
-              ));
-            });
-          } else {
-            nodes.push(node);
-          }
-
-          this.remove();
-        }
-      }
-    });
-
-    return t.functionExpression(null, [uid], t.blockStatement(nodes));
-  }));
-};
-
-SystemFormatter.prototype.transform = function (ast) {
-  var program = ast.program;
-
-  var hoistDeclarators = [];
-  var moduleName = this.getModuleName();
-  var moduleNameLiteral = t.literal(moduleName);
-
-  var block = t.blockStatement(program.body);
-
-  var runner = util.template("system", {
-    MODULE_NAME: moduleNameLiteral,
-    MODULE_DEPENDENCIES: t.arrayExpression(this.buildDependencyLiterals()),
-    EXPORT_IDENTIFIER: this.exportIdentifier,
-    SETTERS: this.buildRunnerSetters(block, hoistDeclarators),
-    EXECUTE: t.functionExpression(null, [], block)
-  }, true);
-
-  var handlerBody = runner.expression.arguments[2].body.body;
-  if (!moduleName) runner.expression.arguments.shift();
-
-  var returnStatement = handlerBody.pop();
-
-  // hoist up all variable declarations
-  traverse(block, {
-    enter: function (node, parent, scope) {
-      if (t.isFunction(node)) {
-        // nothing inside is accessible
-        return this.skip();
-      }
-
-      if (t.isVariableDeclaration(node)) {
-        if (node.kind !== "var" && !t.isProgram(parent)) { // let, const
-          // can't be accessed
-          return;
-        }
-
-        var nodes = [];
-
-        _.each(node.declarations, function (declar) {
-          hoistDeclarators.push(t.variableDeclarator(declar.id));
-          if (declar.init) {
-            // no initializer so we can just hoist it as-is
-            var assign = t.expressionStatement(t.assignmentExpression("=", declar.id, declar.init));
-            nodes.push(assign);
-          }
-        });
-
-        // for (var i in test)
-        // for (var i = 0;;)
-        if (t.isFor(parent)) {
-          if (parent.left === node) {
-            return node.declarations[0].id;
-          }
-
-          if (parent.init === node) {
-            return t.toSequenceExpression(nodes, scope);
-          }
-        }
-
-        return nodes;
-      }
-    }
-  });
-  if (hoistDeclarators.length) {
-    var hoistDeclar = t.variableDeclaration("var", hoistDeclarators);
-    hoistDeclar._blockHoist = true;
-    handlerBody.unshift(hoistDeclar);
-  }
-
-  // hoist up function declarations for circular references
-  traverse(block, {
-    enter: function (node) {
-      if (t.isFunction(node)) this.skip();
-
-      if (t.isFunctionDeclaration(node) || node._blockHoist) {
-        handlerBody.push(node);
-        this.remove();
-      }
-    }
-  });
-
-  handlerBody.push(returnStatement);
-
-  if (useStrict._has(block)) {
-    handlerBody.unshift(block.body.shift());
-  }
-
-  program.body = [runner];
-};

lib/6to5/transformation/modules/umd-strict.js

@@ -1 +0,0 @@
-module.exports = require("./_strict")(require("./umd"));

lib/6to5/transformation/modules/umd.js

@@ -1,72 +0,0 @@
-module.exports = UMDFormatter;
-
-var AMDFormatter = require("./amd");
-var util         = require("../../util");
-var t            = require("../../types");
-var _            = require("lodash");
-
-function UMDFormatter() {
-  AMDFormatter.apply(this, arguments);
-}
-
-util.inherits(UMDFormatter, AMDFormatter);
-
-UMDFormatter.prototype.transform = function (ast) {
-  var program = ast.program;
-  var body    = program.body;
-
-  // build an array of module names
-
-  var names = [];
-  for (var name in this.ids) {
-    names.push(t.literal(name));
-  }
-
-  // factory
-
-  var ids  = _.values(this.ids);
-  var args = [t.identifier("exports")];
-  if (this.passModuleArg) args.push(t.identifier("module"));
-  args = args.concat(ids);
-
-  var factory = t.functionExpression(null, args, t.blockStatement(body));
-
-  // amd
-
-  var defineArgs = [t.literal("exports")];
-  if (this.passModuleArg) defineArgs.push(t.literal("module"));
-  defineArgs = defineArgs.concat(names);
-  defineArgs = [t.arrayExpression(defineArgs)];
-
-  // common
-
-  var testExports = util.template("test-exports");
-  var testModule  = util.template("test-module");
-  var commonTests = this.passModuleArg ? t.logicalExpression("&&", testExports, testModule) : testExports;
-
-  var commonArgs = [t.identifier("exports")];
-  if (this.passModuleArg) commonArgs.push(t.identifier("module"));
-  commonArgs = commonArgs.concat(names.map(function (name) {
-    return t.callExpression(t.identifier("require"), [name]);
-  }));
-
-  // globals
-
-  //var umdArgs = [];
-
-  //
-
-  var moduleName = this.getModuleName();
-  if (moduleName) defineArgs.unshift(t.literal(moduleName));
-
-  var runner = util.template("umd-runner-body", {
-    AMD_ARGUMENTS: defineArgs,
-    COMMON_TEST: commonTests,
-    COMMON_ARGUMENTS: commonArgs
-  });
-
-  //
-
-  var call = t.callExpression(runner, [factory]);
-  program.body = [t.expressionStatement(call)];
-};

lib/6to5/transformation/templates/apply-constructor.js

@@ -1,5 +0,0 @@
-(function (Constructor, args) {
-  var instance = Object.create(Constructor.prototype);
-  var result = Constructor.apply(instance, args);
-  return result != null && (typeof result == "object" || typeof result == "function") ? result : instance;
-});

lib/6to5/transformation/templates/array-comprehension-for-each.js

@@ -1,3 +0,0 @@
-ARRAY.forEach(function (KEY) {
-
-});

lib/6to5/transformation/templates/async-to-generator.js

@@ -1,37 +0,0 @@
-(function (fn) {
-  return function () {
-    var gen = fn.apply(this, arguments);
-
-    return new Promise(function (resolve, reject) {
-      function step(getNext) {
-        var next;
-
-        try {
-          next = getNext();
-        } catch(e) {
-          reject(e);
-          return;
-        }
-
-        if (next.done) {
-          resolve(next.value);
-          return;
-        }
-
-        Promise.resolve(next.value).then(function (v) {
-          step(function () {
-            return gen.next(v);
-          });
-        }, function (e) {
-          step(function () {
-            return gen["throw"](e);
-          });
-        });
-      }
-
-      step(function () {
-        return gen.next();
-      });
-    });
-  }
-})

lib/6to5/transformation/templates/class-super-constructor-call-fast.js

@@ -1,5 +0,0 @@
-(function () {
-  if (SUPER_NAME != null) {
-    SUPER_NAME.apply(this, arguments);
-  }
-});

lib/6to5/transformation/templates/class-super-constructor-call.js

@@ -1,3 +0,0 @@
-if (Object.getPrototypeOf(CLASS_NAME) !== null) {
-  Object.getPrototypeOf(CLASS_NAME).apply(this, arguments);
-}

lib/6to5/transformation/templates/common-export-default-assign.js

@@ -1 +0,0 @@
-module.exports = EXTENDS_HELPER(exports["default"], exports);

lib/6to5/transformation/templates/corejs-iterator.js

@@ -1 +0,0 @@
-CORE_ID.$for.getIterator(VALUE);

lib/6to5/transformation/templates/default-parameter.js

@@ -1 +0,0 @@
-var VARIABLE_NAME = ARGUMENTS[ARGUMENT_KEY] === undefined ? DEFAULT_VALUE : ARGUMENTS[ARGUMENT_KEY];

lib/6to5/transformation/templates/defaults.js

@@ -1,8 +0,0 @@
-(function (obj, defaults) {
-  for (var key in defaults) {
-    if (obj[key] === undefined) {
-      obj[key] = defaults[key];
-    }
-  }
-  return obj;
-})

lib/6to5/transformation/templates/exports-default-module-override.js

@@ -1 +0,0 @@
-exports = module.exports = VALUE;

lib/6to5/transformation/templates/extends.js

@@ -1,9 +0,0 @@
-(function (target) {
-  for (var i = 1; i < arguments.length; i++) {
-    var source = arguments[i];
-    for (var key in source) {
-      target[key] = source[key];
-    }
-  }
-  return target;
-})

lib/6to5/transformation/templates/for-of.js

@@ -1,3 +0,0 @@
-for (var ITERATOR_KEY = OBJECT[Symbol.iterator](), STEP_KEY; !(STEP_KEY = ITERATOR_KEY.next()).done; ) {
-
-}

lib/6to5/transformation/templates/interop-require-wildcard.js

@@ -1,3 +0,0 @@
-(function (obj) {
-  return obj && obj.constructor === Object ? obj : { default: obj };
-})

lib/6to5/transformation/templates/interop-require.js

@@ -1,3 +0,0 @@
-(function (obj) {
-  return obj && (obj["default"] || obj);
-})

lib/6to5/transformation/templates/prototype-properties.js

@@ -1,4 +0,0 @@
-(function (child, staticProps, instanceProps) {
-  if (staticProps) Object.defineProperties(child, staticProps);
-  if (instanceProps) Object.defineProperties(child.prototype, instanceProps);
-})

lib/6to5/transformation/templates/rest.js

@@ -1,3 +0,0 @@
-for (var KEY = START; KEY < ARGUMENTS.length; KEY++) {
-  ARRAY[ARRAY_KEY] = ARGUMENTS[KEY];
-}

lib/6to5/transformation/transform.js

@@ -1,104 +0,0 @@
-module.exports = transform;
-
-var Transformer = require("./transformer");
-var File        = require("../file");
-var util        = require("../util");
-var _           = require("lodash");
-
-function transform(code, opts) {
-  var file = new File(opts);
-  return file.parse(code);
-}
-
-transform.fromAst = function (ast, code, opts) {
-  ast = util.normaliseAst(ast);
-
-  var file = new File(opts);
-  file.addCode(code);
-  file.transform(ast);
-  return file.generate();
-};
-
-transform._ensureTransformerNames = function (type, keys) {
-  for (var i in keys) {
-    var key = keys[i];
-    if (!_.has(transform.transformers, key)) {
-      throw new ReferenceError("unknown transformer " + key + " specified in " + type);
-    }
-  }
-};
-
-transform.transformers = {};
-
-transform.moduleFormatters = {
-  commonStrict: require("./modules/common-strict"),
-  umdStrict:    require("./modules/umd-strict"),
-  amdStrict:    require("./modules/amd-strict"),
-  common:       require("./modules/common"),
-  system:       require("./modules/system"),
-  ignore:       require("./modules/ignore"),
-  amd:          require("./modules/amd"),
-  umd:          require("./modules/umd")
-};
-
-_.each({
-  specNoForInOfAssignment:   require("./transformers/spec-no-for-in-of-assignment"),
-  specSetters:               require("./transformers/spec-setters"),
-
-  // playground
-  methodBinding:             require("./transformers/playground-method-binding"),
-  memoizationOperator:       require("./transformers/playground-memoization-operator"),
-  objectGetterMemoization:   require("./transformers/playground-object-getter-memoization"),
-
-  asyncToGenerator:          require("./transformers/optional-async-to-generator"),
-  bluebirdCoroutines:        require("./transformers/optional-bluebird-coroutines"),
-
-  react:                     require("./transformers/react"),
-  modules:                   require("./transformers/es6-modules"),
-  propertyNameShorthand:     require("./transformers/es6-property-name-shorthand"),
-  arrayComprehension:        require("./transformers/es7-array-comprehension"),
-  generatorComprehension:    require("./transformers/es7-generator-comprehension"),
-  arrowFunctions:            require("./transformers/es6-arrow-functions"),
-  classesFastSuper:          require("./transformers/optional-classes-fast-super"),
-  classes:                   require("./transformers/es6-classes"),
-
-  objectSpread:              require("./transformers/es7-object-spread"),
-  exponentiationOperator:    require("./transformers/es7-exponentiation-operator"),
-  spread:                    require("./transformers/es6-spread"),
-  templateLiterals:          require("./transformers/es6-template-literals"),
-  propertyMethodAssignment:  require("./transformers/es6-property-method-assignment"),
-  computedPropertyNames:     require("./transformers/es6-computed-property-names"),
-  destructuring:             require("./transformers/es6-destructuring"),
-  defaultParameters:         require("./transformers/es6-default-parameters"),
-  forOfFast:                 require("./transformers/optional-for-of-fast"),
-  forOf:                     require("./transformers/es6-for-of"),
-  unicodeRegex:              require("./transformers/es6-unicode-regex"),
-  abstractReferences:        require("./transformers/es7-abstract-references"),
-
-  constants:                 require("./transformers/es6-constants"),
-  letScoping:                require("./transformers/es6-let-scoping"),
-
-  _blockHoist:               require("./transformers/_block-hoist"),
-
-  generators:                require("./transformers/es6-generators"),
-  restParameters:            require("./transformers/es6-rest-parameters"),
-
-  protoToAssign:             require("./transformers/optional-proto-to-assign"),
-
-  _declarations:             require("./transformers/_declarations"),
-
-  // wrap up
-  useStrict:                 require("./transformers/use-strict"),
-  _aliasFunctions:           require("./transformers/_alias-functions"),
-  _moduleFormatter:          require("./transformers/_module-formatter"),
-
-  typeofSymbol:              require("./transformers/optional-typeof-symbol"),
-  coreAliasing:              require("./transformers/optional-core-aliasing"),
-  undefinedToVoid:           require("./transformers/optional-undefined-to-void"),
-
-  // spec
-  specPropertyLiterals:         require("./transformers/spec-property-literals"),
-  specMemberExpressionLiterals: require("./transformers/spec-member-expression-literals")
-}, function (transformer, key) {
-  transform.transformers[key] = new Transformer(key, transformer);
-});

lib/6to5/transformation/transformer.js

@@ -1,98 +0,0 @@
-module.exports = Transformer;
-
-var traverse = require("../traverse");
-var t        = require("../types");
-var _        = require("lodash");
-
-function Transformer(key, transformer, opts) {
-  this.manipulateOptions = transformer.manipulateOptions;
-  this.experimental      = !!transformer.experimental;
-  this.secondPass        = !!transformer.secondPass;
-  this.transformer       = this.normalise(transformer);
-  this.optional          = !!transformer.optional;
-  this.opts              = opts || {};
-  this.key               = key;
-}
-
-Transformer.prototype.normalise = function (transformer) {
-  var self = this;
-
-  if (_.isFunction(transformer)) {
-    transformer = { ast: transformer };
-  }
-
-  _.each(transformer, function (fns, type) {
-    // hidden property
-    if (type[0] === "_") {
-      self[type] = fns;
-      return;
-    }
-
-    if (_.isFunction(fns)) fns = { enter: fns };
-
-    if (!_.isObject(fns)) return;
-
-    transformer[type] = fns;
-
-    var aliases = t.FLIPPED_ALIAS_KEYS[type];
-    if (aliases) {
-      _.each(aliases, function (alias) {
-        transformer[alias] = fns;
-      });
-    }
-  });
-
-  return transformer;
-};
-
-Transformer.prototype.astRun = function (file, key) {
-  var transformer = this.transformer;
-
-  if (transformer.ast && transformer.ast[key]) {
-    transformer.ast[key](file.ast, file);
-  }
-};
-
-Transformer.prototype.transform = function (file) {
-  var transformer = this.transformer;
-
-  var build = function (exit) {
-    return function (node, parent, scope) {
-      var fns = transformer[node.type];
-      if (!fns) return;
-
-      var fn = fns.enter;
-      if (exit) fn = fns.exit;
-      if (!fn) return;
-
-      return fn(node, parent, file, scope);
-    };
-  };
-
-  this.astRun(file, "before");
-
-  traverse(file.ast, {
-    enter: build(),
-    exit:  build(true)
-  });
-
-  this.astRun(file, "after");
-};
-
-Transformer.prototype.canRun = function (file) {
-  var opts = file.opts;
-  var key  = this.key;
-  if (key[0] === "_") return true;
-
-  var blacklist = opts.blacklist;
-  if (blacklist.length && _.contains(blacklist, key)) return false;
-
-  var whitelist = opts.whitelist;
-  if (whitelist.length && !_.contains(whitelist, key)) return false;
-
-  if (this.optional && !_.contains(opts.optional, key)) return false;
-
-  if (this.experimental && !opts.experimental) return false;
-
-  return true;
-};

lib/6to5/transformation/transformers/_alias-functions.js

@@ -1,86 +0,0 @@
-var traverse = require("../../traverse");
-var t        = require("../../types");
-
-var go = function (getBody, node, file, scope) {
-  var argumentsId;
-  var thisId;
-
-  var getArgumentsId = function () {
-    return argumentsId = argumentsId || file.generateUidIdentifier("arguments", scope);
-  };
-
-  var getThisId = function () {
-    return thisId = thisId || file.generateUidIdentifier("this", scope);
-  };
-
-  // traverse the function and find all alias functions so we can alias
-  // `arguments` and `this` if necessary
-  traverse(node, {
-    enter: function (node) {
-      if (!node._aliasFunction) {
-        if (t.isFunction(node)) {
-          // stop traversal of this node as it'll be hit again by this transformer
-          return this.skip();
-        } else {
-          return;
-        }
-      }
-
-      // traverse all child nodes of this function and find `arguments` and `this`
-      traverse(node, {
-        enter: function (node, parent) {
-          if (t.isFunction(node) && !node._aliasFunction) {
-            return this.skip();
-          }
-
-          if (node._ignoreAliasFunctions) return this.skip();
-
-          var getId;
-
-          if (t.isIdentifier(node) && node.name === "arguments") {
-            getId = getArgumentsId;
-          } else if (t.isThisExpression(node)) {
-            getId = getThisId;
-          } else {
-            return;
-          }
-
-          if (t.isReferenced(node, parent)) return getId();
-        }
-      });
-
-      return this.skip();
-    }
-  });
-
-  var body;
-
-  var pushDeclaration = function (id, init) {
-    body = body || getBody();
-    body.unshift(t.variableDeclaration("var", [
-      t.variableDeclarator(id, init)
-    ]));
-  };
-
-  if (argumentsId) {
-    pushDeclaration(argumentsId, t.identifier("arguments"));
-  }
-
-  if (thisId) {
-    pushDeclaration(thisId, t.thisExpression());
-  }
-};
-
-exports.Program = function (node, parent, file, scope) {
-  go(function () {
-    return node.body;
-  }, node, file, scope);
-};
-
-exports.FunctionDeclaration =
-exports.FunctionExpression = function (node, parent, file, scope) {
-  go(function () {
-    t.ensureBlock(node);
-    return node.body.body;
-  }, node, file, scope);
-};

lib/6to5/transformation/transformers/_block-hoist.js

@@ -1,32 +0,0 @@
-var useStrict = require("./use-strict");
-var _         = require("lodash");
-
-// Priority:
-//
-//  - 0 We want this to be at the **very** bottom
-//  - 1 Default node position
-//  - 2 Priority over normal nodes
-//  - 3 We want this to be at the **very** top
-
-exports.BlockStatement =
-exports.Program = {
-  exit: function (node) {
-    var hasChange = false;
-    for (var i in node.body) {
-      var bodyNode = node.body[i];
-      if (bodyNode && bodyNode._blockHoist != null) hasChange = true;
-    }
-    if (!hasChange) return;
-
-    useStrict._wrap(node, function () {
-      var nodePriorities = _.groupBy(node.body, function (bodyNode) {
-        var priority = bodyNode._blockHoist;
-        if (priority == null) priority = 1;
-        if (priority === true) priority = 2;
-        return priority;
-      });
-
-      node.body = _.flatten(_.values(nodePriorities).reverse());
-    });
-  }
-};

lib/6to5/transformation/transformers/_declarations.js

@@ -1,32 +0,0 @@
-var useStrict = require("./use-strict");
-var t         = require("../../types");
-
-exports.secondPass = true;
-
-exports.BlockStatement =
-exports.Program = function (node) {
-  var kinds = {};
-  var kind;
-
-  useStrict._wrap(node, function () {
-    for (var i in node._declarations) {
-      var declar = node._declarations[i];
-
-      kind = declar.kind || "var";
-      var declarNode = t.variableDeclarator(declar.id, declar.init);
-
-      if (!declar.init) {
-        kinds[kind] = kinds[kind] || [];
-        kinds[kind].push(declarNode);
-      } else {
-        node.body.unshift(t.variableDeclaration(kind, [declarNode]));
-      }
-    }
-
-    for (kind in kinds) {
-      node.body.unshift(t.variableDeclaration(kind, kinds[kind]));
-    }
-  });
-
-  node._declarations = null;
-};

lib/6to5/transformation/transformers/_module-formatter.js

@@ -1,11 +0,0 @@
-var transform = require("../transform");
-
-exports.ast = {
-  exit: function (ast, file) {
-    if (!transform.transformers.modules.canRun(file)) return;
-
-    if (file.moduleFormatter.transform) {
-      file.moduleFormatter.transform(ast);
-    }
-  }
-};

lib/6to5/transformation/transformers/es6-arrow-functions.js

@@ -1,11 +0,0 @@
-var t = require("../../types");
-
-exports.ArrowFunctionExpression = function (node) {
-  t.ensureBlock(node);
-
-  node._aliasFunction = "arrow";
-  node.expression = false;
-  node.type = "FunctionExpression";
-
-  return node;
-};

lib/6to5/transformation/transformers/es6-classes.js

@@ -1,337 +0,0 @@
-var traverse = require("../../traverse");
-var util     = require("../../util");
-var t        = require("../../types");
-
-exports.ClassDeclaration = function (node, parent, file, scope) {
-  return new Class(node, file, scope, true).run();
-};
-
-exports.ClassExpression = function (node, parent, file, scope) {
-  return new Class(node, file, scope, false).run();
-};
-
-/**
- * Description
- *
- * @param {Node} node
- * @param {File} file
- * @param {Scope} scope
- * @param {Boolean} closure
- */
-
-function Class(node, file, scope, isStatement) {
-  this.isStatement = isStatement;
-  this.scope       = scope;
-  this.node        = node;
-  this.file        = file;
-
-  this.hasInstanceMutators = false;
-  this.hasStaticMutators   = false;
-
-  this.instanceMutatorMap = {};
-  this.staticMutatorMap   = {};
-  this.hasConstructor     = false;
-  this.className          = node.id || file.generateUidIdentifier("class", scope);
-  this.superName          = node.superClass;
-}
-
-/**
- * Description
- *
- * @returns {Array}
- */
-
-Class.prototype.run = function () {
-  var superName = this.superName;
-  var className = this.className;
-  var file      = this.file;
-
-  //
-
-  var body = this.body = [];
-
-  var constructor;
-  if (this.node.id) {
-    constructor = t.functionDeclaration(className, [], t.blockStatement([]));
-    body.push(constructor);
-  } else {
-    constructor = t.functionExpression(null, [], t.blockStatement([]));
-    body.push(t.variableDeclaration("var", [
-      t.variableDeclarator(className, constructor)
-    ]));
-  }
-  this.constructor = constructor;
-
-  var closureParams = [];
-  var closureArgs = [];
-
-  //
-
-  if (superName) {
-    closureArgs.push(superName);
-
-    if (!t.isIdentifier(superName)) {
-      var superRef = this.scope.generateUidBasedOnNode(superName, this.file);
-      superName = superRef;
-    }
-
-    closureParams.push(superName);
-
-    this.superName = superName;
-    body.push(t.expressionStatement(t.callExpression(file.addHelper("inherits"), [className, superName])));
-  }
-
-  this.buildBody();
-
-  t.inheritsComments(body[0], this.node);
-
-  var init;
-
-  if (body.length === 1) {
-    // only a constructor so no need for a closure container
-    init = t.toExpression(constructor);
-  } else {
-    body.push(t.returnStatement(className));
-    init = t.callExpression(
-      t.functionExpression(null, closureParams, t.blockStatement(body)),
-      closureArgs
-    );
-  }
-
-  if (this.isStatement) {
-    return t.variableDeclaration("let", [
-      t.variableDeclarator(className, init)
-    ]);
-  } else {
-    return init;
-  }
-};
-
-/**
- * Description
- */
-
-Class.prototype.buildBody = function () {
-  var constructor = this.constructor;
-  var className   = this.className;
-  var superName   = this.superName;
-  var classBody   = this.node.body.body;
-  var body        = this.body;
-  var self        = this;
-
-  for (var i in classBody) {
-    var node = classBody[i];
-    if (t.isMethodDefinition(node)) {
-      self.replaceInstanceSuperReferences(node);
-
-      if (node.key.name === "constructor") {
-        self.pushConstructor(node);
-      } else {
-        self.pushMethod(node);
-      }
-    } else if (t.isPrivateDeclaration(node)) {
-      self.closure = true;
-      body.unshift(node);
-    }
-  }
-
-  if (!this.hasConstructor && superName && !t.isFalsyExpression(superName)) {
-    constructor.body.body.push(util.template("class-super-constructor-call", {
-      CLASS_NAME: className
-    }, true));
-  }
-
-  var instanceProps;
-  var staticProps;
-
-  if (this.hasInstanceMutators) {
-    instanceProps = util.buildDefineProperties(this.instanceMutatorMap);
-  }
-
-  if (this.hasStaticMutators) {
-    staticProps = util.buildDefineProperties(this.staticMutatorMap);
-  }
-
-  if (instanceProps || staticProps) {
-    staticProps = staticProps || t.literal(null);
-
-    var args = [className, staticProps];
-    if (instanceProps) args.push(instanceProps);
-
-    body.push(t.expressionStatement(
-      t.callExpression(this.file.addHelper("prototype-properties"), args)
-    ));
-  }
-};
-
-/**
- * Push a method to it's respective mutatorMap.
- *
- * @param {Node} node MethodDefinition
- */
-
-Class.prototype.pushMethod = function (node) {
-  var methodName = node.key;
-
-  var kind = node.kind;
-  var mutatorMap = this.instanceMutatorMap;
-  if (node.static) {
-    this.hasStaticMutators = true;
-    mutatorMap = this.staticMutatorMap;
-  } else {
-    this.hasInstanceMutators = true;
-  }
-
-  if (kind === "") {
-    kind = "value";
-  }
-
-  util.pushMutatorMap(mutatorMap, methodName, kind, node.computed, node);
-};
-
-/**
- * Gets a node representing the super class value of the named property.
- *
- * @example
- *
- *   _get(Object.getPrototypeOf(CLASS.prototype), "METHOD", this)
- *
- * @param {Node} property
- * @param {boolean} isStatic
- * @param {boolean} isComputed
- *
- * @returns {Node}
- */
-
-Class.prototype.superProperty = function (property, isStatic, isComputed, thisExpression) {
-  return t.callExpression(
-    this.file.addHelper("get"),
-    [
-      t.callExpression(
-        t.memberExpression(t.identifier("Object"), t.identifier("getPrototypeOf")),
-        [
-          isStatic ? this.className : t.memberExpression(this.className, t.identifier("prototype"))
-        ]
-      ),
-      isComputed ? property : t.literal(property.name),
-      thisExpression
-    ]
-  );
-};
-
-/**
- * Replace all `super` references with a reference to our `superClass`.
- *
- * @param {Node} methodNode MethodDefinition
- */
-
-Class.prototype.replaceInstanceSuperReferences = function (methodNode) {
-  var method = methodNode.value;
-  var self   = this;
-
-  var topLevelThisReference;
-
-  traverse2(method, true);
-
-  if (topLevelThisReference) {
-    method.body.body.unshift(t.variableDeclaration("var", [
-      t.variableDeclarator(topLevelThisReference, t.thisExpression())
-    ]));
-  }
-
-  function traverse2(node, topLevel) {
-    traverse(node, {
-      enter: function (node, parent) {
-        if (t.isFunction(node) && !t.isArrowFunctionExpression(node)) {
-          traverse2(node, false);
-          return this.skip();
-        }
-
-        var property;
-        var computed;
-        var args;
-
-        if (t.isIdentifier(node, { name: "super" })) {
-          if (!(t.isMemberExpression(parent) && !parent.computed && parent.property === node)) {
-            throw self.file.errorWithNode(node, "illegal use of bare super");
-          }
-        } else if (t.isCallExpression(node)) {
-          var callee = node.callee;
-          if (t.isIdentifier(callee, { name: "super" })) {
-            // super(); -> _get(Object.getPrototypeOf(ClassName), "MethodName", this).call(this);
-            property = methodNode.key;
-            computed = methodNode.computed;
-            args = node.arguments;
-          } else {
-            if (!t.isMemberExpression(callee)) return;
-            if (callee.object.name !== "super") return;
-
-            // super.test(); -> _get(Object.getPrototypeOf(ClassName.prototype), "test", this).call(this);
-            property = callee.property;
-            computed = callee.computed;
-            args = node.arguments;
-          }
-        } else if (t.isMemberExpression(node)) {
-          if (!t.isIdentifier(node.object, { name: "super" })) return;
-
-          // super.name; -> _get(Object.getPrototypeOf(ClassName.prototype), "name", this);
-          property = node.property;
-          computed = node.computed;
-        }
-
-        if (property) {
-          var thisReference;
-          if (topLevel) {
-            thisReference = t.thisExpression();
-          } else {
-            topLevelThisReference = thisReference = topLevelThisReference || self.file.generateUidIdentifier("this");
-          }
-
-          var superProperty = self.superProperty(property, methodNode.static, computed, thisReference);
-          if (args) {
-            if (args.length === 1 && t.isSpreadElement(args[0])) {
-              // super(...arguments);
-              return t.callExpression(
-                t.memberExpression(superProperty, t.identifier("apply"), false),
-                [thisReference, args[0].argument]
-              );
-            } else {
-              return t.callExpression(
-                t.memberExpression(superProperty, t.identifier("call"), false),
-                [thisReference].concat(args)
-              );
-            }
-          } else {
-            return superProperty;
-          }
-        }
-      }
-    });
-  }
-};
-
-/**
- * Replace the constructor body of our class.
- *
- * @param {Node} method MethodDefinition
- */
-
-Class.prototype.pushConstructor = function (method) {
-  if (method.kind) {
-    throw this.file.errorWithNode(method, "illegal kind for constructor method");
-  }
-
-  var construct = this.constructor;
-  var fn        = method.value;
-
-  this.hasConstructor = true;
-
-  t.inherits(construct, fn);
-  t.inheritsComments(construct, method);
-
-  construct._ignoreUserWhitespace = true;
-  construct.defaults              = fn.defaults;
-  construct.params                = fn.params;
-  construct.body                  = fn.body;
-  construct.rest                  = fn.rest;
-};

lib/6to5/transformation/transformers/es6-constants.js

@@ -1,82 +0,0 @@
-var traverse = require("../../traverse");
-var t        = require("../../types");
-var _        = require("lodash");
-
-exports.Program =
-exports.BlockStatement =
-exports.ForInStatement =
-exports.ForOfStatement =
-exports.ForStatement = function (node, parent, file) {
-  var hasConstants = false;
-  var constants = {};
-
-  /**
-   * Check the results of `util.getIds` as `names` generated from a
-   * node against it's parent.
-   */
-
-  var check = function (parent, names, scope) {
-    for (var name in names) {
-      var nameNode = names[name];
-      if (!_.has(constants, name)) continue;
-      if (parent && t.isBlockStatement(parent) && parent !== constants[name]) continue;
-
-      if (scope) {
-        var defined = scope.get(name);
-        if (defined && defined === nameNode) continue;
-      }
-
-      throw file.errorWithNode(nameNode, name + " is read-only");
-    }
-  };
-
-  var getIds = function (node) {
-    return t.getIds(node, true, ["MemberExpression"]);
-  };
-
-  /**
-   * Collect all constants in this scope.
-   */
-
-  _.each(node.body, function (child, parent) {
-    if (t.isExportDeclaration(child)) {
-      child = child.declaration;
-    }
-
-    if (t.isVariableDeclaration(child, { kind: "const" })) {
-      for (var i in child.declarations) {
-        var declar = child.declarations[i];
-
-        var ids = getIds(declar);
-        for (var name in ids) {
-          var nameNode = ids[name];
-
-          var names = {};
-          names[name] = nameNode;
-          check(parent, names);
-
-          constants[name] = parent;
-          hasConstants = true;
-        }
-
-        declar._ignoreConstant = true;
-      }
-
-      child._ignoreConstant = true;
-      child.kind = "let";
-    }
-  });
-
-  if (!hasConstants) return;
-
-  traverse(node, {
-    enter: function (child, parent, scope) {
-      if (child._ignoreConstant) return;
-      if (t.isVariableDeclaration(child)) return;
-
-      if (t.isVariableDeclarator(child) || t.isDeclaration(child) || t.isAssignmentExpression(child)) {
-        check(parent, getIds(child), scope);
-      }
-    }
-  });
-};

lib/6to5/transformation/transformers/es6-default-parameters.js

@@ -1,87 +0,0 @@
-var traverse = require("../../traverse");
-var util     = require("../../util");
-var t        = require("../../types");
-var _        = require("lodash");
-
-exports.Function = function (node, parent, file, scope) {
-  if (!node.defaults || !node.defaults.length) return;
-  t.ensureBlock(node);
-
-  var ids = node.params.map(function (param) {
-    return t.getIds(param);
-  });
-
-  var iife = false;
-  var i;
-  var def;
-
-  for (i in node.defaults) {
-    def = node.defaults[i];
-    if (!def) continue;
-
-    var param = node.params[i];
-
-    // temporal dead zone check - here we prevent accessing of params that
-    // are to the right - ie. uninitialized parameters
-    _.each(ids.slice(i), function (ids) {
-      var check = function (node, parent) {
-        if (!t.isIdentifier(node) || !t.isReferenced(node, parent)) return;
-
-        if (ids.indexOf(node.name) >= 0) {
-          throw file.errorWithNode(node, "Temporal dead zone - accessing a variable before it's initialized");
-        }
-
-        if (scope.has(node.name, true)) {
-          iife = true;
-        }
-      };
-
-      check(def, node);
-      traverse(def, { enter: check });
-    });
-
-    // we're accessing a variable that's already defined within this function
-    var has = scope.get(param.name);
-    if (has && node.params.indexOf(has) < 0) {
-      iife = true;
-    }
-  }
-
-  var body = [];
-
-  var argsIdentifier = t.identifier("arguments");
-  argsIdentifier._ignoreAliasFunctions = true;
-
-  var lastNonDefaultParam = 0;
-
-  for (i in node.defaults) {
-    def = node.defaults[i];
-    if (!def) {
-      lastNonDefaultParam = +i + 1;
-      continue;
-    }
-
-    body.push(util.template("default-parameter", {
-      VARIABLE_NAME: node.params[i],
-      DEFAULT_VALUE: def,
-      ARGUMENT_KEY:  t.literal(+i),
-      ARGUMENTS:     argsIdentifier
-    }, true));
-  }
-
-  // we need to cut off all trailing default parameters
-  node.params = node.params.slice(0, lastNonDefaultParam);
-
-  if (iife) {
-    var container = t.functionExpression(null, [], node.body, node.generator);
-    container._aliasFunction = true;
-
-    body.push(t.returnStatement(t.callExpression(container, [])));
-
-    node.body = t.blockStatement(body);
-  } else {
-    node.body.body = body.concat(node.body.body);
-  }
-
-  node.defaults = [];
-};

lib/6to5/transformation/transformers/es6-destructuring.js

@@ -1,335 +0,0 @@
-// TODO: Clean up
-
-var t = require("../../types");
-
-var buildVariableAssign = function (opts, id, init) {
-  var op = opts.operator;
-  if (t.isMemberExpression(id)) op = "=";
-
-  if (op) {
-    return t.expressionStatement(t.assignmentExpression("=", id, init));
-  } else {
-    return t.variableDeclaration(opts.kind, [
-      t.variableDeclarator(id, init)
-    ]);
-  }
-};
-
-var push = function (opts, nodes, elem, parentId) {
-  if (t.isObjectPattern(elem)) {
-    pushObjectPattern(opts, nodes, elem, parentId);
-  } else if (t.isArrayPattern(elem)) {
-    pushArrayPattern(opts, nodes, elem, parentId);
-  } else if (t.isAssignmentPattern(elem)) {
-    pushAssignmentPattern(opts, nodes, elem, parentId);
-  } else {
-    nodes.push(buildVariableAssign(opts, elem, parentId));
-  }
-};
-
-var pushAssignmentPattern = function (opts, nodes, pattern, parentId) {
-  var tempParentId = opts.scope.generateUidBasedOnNode(parentId, opts.file);
-
-  nodes.push(t.variableDeclaration("var", [
-    t.variableDeclarator(tempParentId, parentId)
-  ]));
-
-  nodes.push(buildVariableAssign(
-    opts,
-    pattern.left,
-    t.conditionalExpression(
-      t.binaryExpression("===", tempParentId, t.identifier("undefined")),
-      pattern.right,
-      tempParentId
-    )
-  ));
-};
-
-var pushObjectPattern = function (opts, nodes, pattern, parentId) {
-  for (var i in pattern.properties) {
-    var prop = pattern.properties[i];
-    if (t.isSpreadProperty(prop)) {
-        // get all the keys that appear in this object before the current spread
-        var keys = [];
-        for (var i2 in pattern.properties) {
-          var prop2 = pattern.properties[i2];
-
-          if (i2 >= i) break;
-          if (t.isSpreadProperty(prop2)) continue;
-
-          var key = prop2.key;
-          if (t.isIdentifier(key)) {
-            key = t.literal(prop2.key.name);
-          }
-          keys.push(key);
-        }
-        keys = t.arrayExpression(keys);
-
-        var value = t.callExpression(opts.file.addHelper("object-without-properties"), [parentId, keys]);
-        nodes.push(buildVariableAssign(opts, prop.argument, value));
-    } else {
-      if (t.isLiteral(prop.key)) prop.computed = true;
-
-      var pattern2   = prop.value;
-      var patternId2 = t.memberExpression(parentId, prop.key, prop.computed);
-
-      if (t.isPattern(pattern2)) {
-        push(opts, nodes, pattern2, patternId2);
-      } else {
-        nodes.push(buildVariableAssign(opts, pattern2, patternId2));
-      }
-    }
-  }
-};
-
-var pushArrayPattern = function (opts, nodes, pattern, parentId) {
-  if (!pattern.elements) return;
-
-  var i;
-
-  var hasSpreadElement = false;
-  for (i in pattern.elements) {
-    if (t.isSpreadElement(pattern.elements[i])) {
-      hasSpreadElement = true;
-      break;
-    }
-  }
-
-  var toArray = opts.file.toArray(parentId, !hasSpreadElement && pattern.elements.length);
-
-  var _parentId = opts.scope.generateUidBasedOnNode(parentId, opts.file);
-  nodes.push(t.variableDeclaration("var", [
-    t.variableDeclarator(_parentId, toArray)
-  ]));
-  parentId = _parentId;
-
-  for (i in pattern.elements) {
-    var elem = pattern.elements[i];
-    if (!elem) continue;
-
-    i = +i;
-
-    var newPatternId;
-
-    if (t.isSpreadElement(elem)) {
-      newPatternId = opts.file.toArray(parentId);
-
-      if (i > 0) {
-        newPatternId = t.callExpression(t.memberExpression(newPatternId, t.identifier("slice")), [t.literal(i)]);
-      }
-
-      elem = elem.argument;
-    } else {
-      newPatternId = t.memberExpression(parentId, t.literal(i), true);
-    }
-
-    push(opts, nodes, elem, newPatternId);
-  }
-};
-
-var pushPattern = function (opts) {
-  var nodes = opts.nodes;
-  var pattern = opts.pattern;
-  var parentId = opts.id;
-  var file = opts.file;
-  var scope = opts.scope;
-
-  if (!t.isArrayExpression(parentId) && !t.isMemberExpression(parentId) && !t.isIdentifier(parentId)) {
-    var key = scope.generateUidBasedOnNode(parentId, file);
-
-    nodes.push(t.variableDeclaration("var", [
-      t.variableDeclarator(key, parentId)
-    ]));
-
-    parentId = key;
-  }
-
-  push(opts, nodes, pattern, parentId);
-};
-
-exports.ForInStatement =
-exports.ForOfStatement = function (node, parent, file, scope) {
-  var declar = node.left;
-  if (!t.isVariableDeclaration(declar)) return;
-
-  var pattern = declar.declarations[0].id;
-  if (!t.isPattern(pattern)) return;
-
-  var key = file.generateUidIdentifier("ref", scope);
-  node.left = t.variableDeclaration(declar.kind, [
-    t.variableDeclarator(key, null)
-  ]);
-
-  var nodes = [];
-
-  push({
-    kind: declar.kind,
-    file: file,
-    scope: scope
-  }, nodes, pattern, key);
-
-  t.ensureBlock(node);
-
-  var block = node.body;
-  block.body = nodes.concat(block.body);
-};
-
-exports.Function = function (node, parent, file, scope) {
-  var nodes = [];
-
-  var hasDestructuring = false;
-
-  node.params = node.params.map(function (pattern) {
-    if (!t.isPattern(pattern)) return pattern;
-
-    hasDestructuring = true;
-    var parentId = file.generateUidIdentifier("ref", scope);
-
-    pushPattern({
-      kind:    "var",
-      nodes:   nodes,
-      pattern: pattern,
-      id:      parentId,
-      file:    file,
-      scope:   scope
-    });
-
-    return parentId;
-  });
-
-  if (!hasDestructuring) return;
-
-  t.ensureBlock(node);
-
-  var block = node.body;
-  block.body = nodes.concat(block.body);
-};
-
-exports.CatchClause = function (node, parent, file, scope) {
-  var pattern = node.param;
-  if (!t.isPattern(pattern)) return;
-
-  var ref = file.generateUidIdentifier("ref", scope);
-  node.param = ref;
-
-  var nodes = [];
-
-  push({
-    kind: "var",
-    file: file,
-    scope: scope
-  }, nodes, pattern, ref);
-
-  node.body.body = nodes.concat(node.body.body);
-};
-
-exports.ExpressionStatement = function (node, parent, file, scope) {
-  var expr = node.expression;
-  if (expr.type !== "AssignmentExpression") return;
-
-  if (!t.isPattern(expr.left)) return;
-
-  var nodes = [];
-
-  var ref = file.generateUidIdentifier("ref", scope);
-  nodes.push(t.variableDeclaration("var", [
-    t.variableDeclarator(ref, expr.right)
-  ]));
-
-  push({
-    operator: expr.operator,
-    file: file,
-    scope: scope
-  }, nodes, expr.left, ref);
-
-  return nodes;
-};
-
-exports.AssignmentExpression = function (node, parent, file, scope) {
-  if (parent.type === "ExpressionStatement") return;
-  if (!t.isPattern(node.left)) return;
-
-  var tempName = file.generateUid("temp", scope);
-  var ref = t.identifier(tempName);
-  scope.push({
-    key: tempName,
-    id: ref
-  });
-
-  var nodes = [];
-  nodes.push(t.assignmentExpression("=", ref, node.right));
-
-  push({
-    operator: node.operator,
-    file: file,
-    scope: scope
-  }, nodes, node.left, ref);
-
-  nodes.push(ref);
-
-  return t.toSequenceExpression(nodes, scope);
-};
-
-exports.VariableDeclaration = function (node, parent, file, scope) {
-  if (t.isForInStatement(parent) || t.isForOfStatement(parent)) return;
-
-  var nodes = [];
-  var i;
-  var declar;
-
-  var hasPattern = false;
-  for (i in node.declarations) {
-    declar = node.declarations[i];
-    if (t.isPattern(declar.id)) {
-      hasPattern = true;
-      break;
-    }
-  }
-  if (!hasPattern) return;
-
-  for (i in node.declarations) {
-    declar = node.declarations[i];
-
-    var patternId = declar.init;
-    var pattern   = declar.id;
-    var opts = {
-      kind:    node.kind,
-      nodes:   nodes,
-      pattern: pattern,
-      id:      patternId,
-      file:    file,
-      scope:   scope
-    };
-
-    if (t.isPattern(pattern) && patternId) {
-      pushPattern(opts);
-
-      if (+i !== node.declarations.length - 1) {
-        // we aren't the last declarator so let's just make the
-        // last transformed node inherit from us
-        t.inherits(nodes[nodes.length - 1], declar);
-      }
-    } else {
-      nodes.push(t.inherits(buildVariableAssign(opts, declar.id, declar.init), declar));
-    }
-  }
-
-  if (!t.isProgram(parent) && !t.isBlockStatement(parent)) {
-    declar = null;
-
-    for (i in nodes) {
-      node = nodes[i];
-      declar = declar || t.variableDeclaration(node.kind, []);
-
-      if (!t.isVariableDeclaration(node) && declar.kind !== node.kind) {
-        throw file.errorWithNode(node, "Cannot use this node within the current parent");
-      }
-
-      declar.declarations = declar.declarations.concat(node.declarations);
-    }
-
-    return declar;
-  }
-
-  return nodes;
-};

lib/6to5/transformation/transformers/es6-for-of.js

@@ -1,35 +0,0 @@
-var util = require("../../util");
-var t    = require("../../types");
-
-exports.ForOfStatement = function (node, parent, file, scope) {
-  var left = node.left;
-  var declar;
-
-  var stepKey   = file.generateUidIdentifier("step", scope);
-  var stepValue = t.memberExpression(stepKey, t.identifier("value"));
-
-  if (t.isIdentifier(left) || t.isPattern(left)) {
-    declar = t.expressionStatement(t.assignmentExpression("=", left, stepValue));
-  } else if (t.isVariableDeclaration(left)) {
-    declar = t.variableDeclaration(left.kind, [
-      t.variableDeclarator(left.declarations[0].id, stepValue)
-    ]);
-  } else {
-    throw file.errorWithNode(left, "Unknown node type " + left.type + " in ForOfStatement");
-  }
-
-  var node2 = util.template("for-of", {
-    ITERATOR_KEY: file.generateUidIdentifier("iterator", scope),
-    STEP_KEY:     stepKey,
-    OBJECT:       node.right
-  });
-
-  t.inheritsComments(node2, node);
-  t.ensureBlock(node);
-
-  var block = node2.body;
-  block.body.push(declar);
-  block.body = block.body.concat(node.body.body);
-
-  return node2;
-};

lib/6to5/transformation/transformers/es6-generators.js

@@ -1,9 +0,0 @@
-var regenerator = require("regenerator");
-
-exports.ast = {
-  before: function (ast, file) {
-    regenerator.transform(ast, {
-      includeRuntime: file.opts.includeRegenerator && "if used"
-    });
-  }
-};

lib/6to5/transformation/transformers/es6-let-scoping.js

@@ -1,496 +0,0 @@
-var traverse = require("../../traverse");
-var util     = require("../../util");
-var t        = require("../../types");
-var _        = require("lodash");
-
-var isLet = function (node, parent) {
-  if (!t.isVariableDeclaration(node)) return false;
-  if (node._let) return true;
-  if (node.kind !== "let") return false;
-
-  // https://github.com/6to5/6to5/issues/255
-  if (!t.isFor(parent) || t.isFor(parent) && parent.left !== node) {
-    _.each(node.declarations, function (declar) {
-      declar.init = declar.init || t.identifier("undefined");
-    });
-  }
-
-  node._let = true;
-  node.kind = "var";
-  return true;
-};
-
-var isVar = function (node, parent) {
-  return t.isVariableDeclaration(node, { kind: "var" }) && !isLet(node, parent);
-};
-
-var standardiseLets = function (declars) {
-  for (var i in declars) {
-    delete declars[i]._let;
-  }
-};
-
-exports.VariableDeclaration = function (node, parent) {
-  isLet(node, parent);
-};
-
-exports.Loop = function (node, parent, file, scope) {
-  var init = node.left || node.init;
-  if (isLet(init, node)) {
-    t.ensureBlock(node);
-    node.body._letDeclars = [init];
-  }
-
-  if (t.isLabeledStatement(parent)) {
-    // set label so `run` has access to it
-    node.label = parent.label;
-  }
-
-  var letScoping = new LetScoping(node, node.body, parent, file, scope);
-  letScoping.run();
-
-  if (node.label && !t.isLabeledStatement(parent)) {
-    // we've been given a label so let's wrap ourselves
-    return t.labeledStatement(node.label, node);
-  }
-};
-
-exports.BlockStatement = function (block, parent, file, scope) {
-  if (!t.isLoop(parent)) {
-    var letScoping = new LetScoping(false, block, parent, file, scope);
-    letScoping.run();
-  }
-};
-
-/**
- * Description
- *
- * @param {Boolean|Node} loopParent
- * @param {Node} block
- * @param {Node} parent
- * @param {File} file
- * @param {Scope} scope
- */
-
-function LetScoping(loopParent, block, parent, file, scope) {
-  this.loopParent = loopParent;
-  this.parent     = parent;
-  this.scope      = scope;
-  this.block      = block;
-  this.file       = file;
-
-  this.letReferences = {};
-  this.body          = [];
-}
-
-/**
- * Start the ball rolling.
- */
-
-LetScoping.prototype.run = function () {
-  var block = this.block;
-
-  if (block._letDone) return;
-  block._letDone = true;
-
-  this.info = this.getInfo();
-
-  // remap all let references that exist in upper scopes to their uid
-  this.remap();
-
-  // this is a block within a `Function` so we can safely leave it be
-  if (t.isFunction(this.parent)) return this.noClosure();
-
-  // this block has no let references so let's clean up
-  if (!this.info.keys.length) return this.noClosure();
-
-  // returns whether or not there are any outside let references within any
-  // functions
-  var referencesInClosure = this.getLetReferences();
-
-  // no need for a closure so let's clean up
-  if (!referencesInClosure) return this.noClosure();
-
-  // if we're inside of a for loop then we search to see if there are any
-  // `break`s, `continue`s, `return`s etc
-  this.has = this.checkLoop();
-
-  // hoist var references to retain scope
-  this.hoistVarDeclarations();
-
-  // set let references to plain var references
-  standardiseLets(this.info.declarators);
-
-  // turn letReferences into an array
-  var letReferences = _.values(this.letReferences);
-
-  // build the closure that we're going to wrap the block with
-  var fn = t.functionExpression(null, letReferences, t.blockStatement(block.body));
-  fn._aliasFunction = true;
-
-  // replace the current block body with the one we're going to build
-  block.body = this.body;
-
-  // change upper scope references with their uid if they have one
-  var params = this.getParams(letReferences);
-
-  // build a call and a unique id that we can assign the return value to
-  var call = t.callExpression(fn, params);
-  var ret  = this.file.generateUidIdentifier("ret", this.scope);
-
-  var hasYield = traverse.hasType(fn.body, "YieldExpression", t.FUNCTION_TYPES);
-  if (hasYield) {
-    fn.generator = true;
-    call = t.yieldExpression(call, true);
-  }
-
-  this.build(ret, call);
-};
-
-/**
- * There are no let references accessed within a closure so we can just turn the
- * lets into vars.
- */
-
-LetScoping.prototype.noClosure = function () {
-  standardiseLets(this.info.declarators);
-};
-
-/**
- * Traverse through block and replace all references that exist in a higher
- * scope to their uids.
- */
-
-LetScoping.prototype.remap = function () {
-  var replacements = this.info.duplicates;
-  var block        = this.block;
-
-  if (!this.info.hasDuplicates) return;
-
-  var replace = function (node, parent, scope) {
-    if (!t.isIdentifier(node)) return;
-    if (!t.isReferenced(node, parent)) return;
-    if (scope && scope.hasOwn(node.name)) return;
-    node.name = replacements[node.name] || node.name;
-  };
-
-  var traverseReplace = function (node, parent) {
-    replace(node, parent);
-    traverse(node, { enter: replace });
-  };
-
-  var loopParent = this.loopParent;
-  if (loopParent) {
-    traverseReplace(loopParent.right, loopParent);
-    traverseReplace(loopParent.test, loopParent);
-    traverseReplace(loopParent.update, loopParent);
-  }
-
-  traverse(block, { enter: replace });
-};
-
-/**
- * Description
- *
- * @returns {Object}
- */
-
-LetScoping.prototype.getInfo = function () {
-  var block = this.block;
-  var scope = this.scope;
-  var file  = this.file;
-
-  var opts = {
-    // array of `Identifier` names of let variables that appear lexically out of
-    // this scope but should be accessible - eg. `ForOfStatement`.left
-    outsideKeys: [],
-
-    // array of let `VariableDeclarator`s that are a part of this block
-    declarators: block._letDeclars || [],
-
-    // object of duplicate ids and their aliases - if there's an `Identifier`
-    // name that's used in an upper scope we generate a unique id and replace
-    // all references with it
-    duplicates:  {},
-
-    hasDuplicates: false,
-
-    // array of `Identifier` names of let variables that are accessible within
-    // the current block
-    keys:        []
-  };
-
-  var duplicates = function (id, key) {
-    var has = scope.parentGet(key);
-
-    if (has && has !== id) {
-      // there's a variable with this exact name in an upper scope so we need
-      // to generate a new name
-      opts.duplicates[key] = id.name = file.generateUid(key, scope);
-      opts.hasDuplicates = true;
-    }
-  };
-
-  var i;
-  var declar;
-
-  for (i in opts.declarators) {
-    declar = opts.declarators[i];
-    opts.declarators.push(declar);
-
-    var keys = t.getIds(declar, true);
-    _.each(keys, duplicates);
-    keys = Object.keys(keys);
-
-    opts.outsideKeys = opts.outsideKeys.concat(keys);
-    opts.keys = opts.keys.concat(keys);
-  }
-
-  for (i in block.body) {
-    declar = block.body[i];
-    if (!isLet(declar, block)) continue;
-
-    _.each(t.getIds(declar, true), function (id, key) {
-      duplicates(id, key);
-      opts.keys.push(key);
-    });
-  }
-
-  return opts;
-};
-
-/**
- * If we're inside of a loop then traverse it and check if it has one of
- * the following node types `ReturnStatement`, `BreakStatement`,
- * `ContinueStatement` and replace it with a return value that we can track
- * later on.
- *
- * @returns {Object}
- */
-
-LetScoping.prototype.checkLoop = function () {
-  var has = {
-    hasContinue: false,
-    hasReturn:   false,
-    hasBreak:    false,
-  };
-
-  traverse(this.block, {
-    enter: function (node, parent) {
-      var replace;
-
-      if (t.isFunction(node) || t.isLoop(node)) {
-        return this.skip();
-      }
-
-      if (node && !node.label) {
-        if (t.isBreakStatement(node)) {
-          if (t.isSwitchCase(parent)) return;
-
-          has.hasBreak = true;
-          replace = t.returnStatement(t.literal("break"));
-        } else if (t.isContinueStatement(node)) {
-          has.hasContinue = true;
-          replace = t.returnStatement(t.literal("continue"));
-        }
-      }
-
-      if (t.isReturnStatement(node)) {
-        has.hasReturn = true;
-        replace = t.returnStatement(t.objectExpression([
-          t.property("init", t.identifier("v"), node.argument || t.identifier("undefined"))
-        ]));
-      }
-
-      if (replace) return t.inherits(replace, node);
-    }
-  });
-
-  return has;
-};
-
-/**
- * Hoist all var declarations in this block to before it so they retain scope
- * once we wrap everything in a closure.
- */
-
-LetScoping.prototype.hoistVarDeclarations = function () {
-  var self = this;
-  traverse(this.block, {
-    enter: function (node, parent) {
-      if (t.isForStatement(node)) {
-        if (isVar(node.init, node)) {
-          node.init = t.sequenceExpression(self.pushDeclar(node.init));
-        }
-      } else if (t.isFor(node)) {
-        if (isVar(node.left, node)) {
-          node.left = node.left.declarations[0].id;
-        }
-      } else if (isVar(node, parent)) {
-        return self.pushDeclar(node).map(t.expressionStatement);
-      } else if (t.isFunction(node)) {
-        return this.skip();
-      }
-    }
-  });
-};
-
-/**
- * Build up a parameter list that we'll call our closure wrapper with, replacing
- * all duplicate ids with their uid.
- *
- * @param {Array} params
- * @returns {Array}
- */
-
-LetScoping.prototype.getParams = function (params) {
-  var info = this.info;
-  params = _.cloneDeep(params);
-  _.each(params, function (param) {
-    param.name = info.duplicates[param.name] || param.name;
-  });
-  return params;
-};
-
-/**
- * Get all let references within this block. Stopping whenever we reach another
- * block.
- */
-
-LetScoping.prototype.getLetReferences = function () {
-  var closurify = false;
-  var self = this;
-
-  // traverse through this block, stopping on functions and checking if they
-  // contain any outside let references
-  traverse(this.block, {
-    enter: function (node, parent, scope) {
-      if (t.isFunction(node)) {
-        traverse(node, {
-          enter: function (node, parent) {
-            // not an identifier so we have no use
-            if (!t.isIdentifier(node)) return;
-
-            // not a direct reference
-            if (!t.isReferenced(node, parent)) return;
-
-            // this scope has a variable with the same name so it couldn't belong
-            // to our let scope
-            if (scope.hasOwn(node.name, true)) return;
-
-            closurify = true;
-
-            // this key doesn't appear just outside our scope
-            if (!_.contains(self.info.outsideKeys, node.name)) return;
-
-            // push this badboy
-            self.letReferences[node.name] = node;
-          }
-        });
-
-        return this.skip();
-      }
-    }
-  });
-
-  return closurify;
-};
-
-/**
- * Turn a `VariableDeclaration` into an array of `AssignmentExpressions` with
- * their declarations hoisted to before the closure wrapper.
- *
- * @param {Node} node VariableDeclaration
- * @returns {Array}
- */
-
-LetScoping.prototype.pushDeclar = function (node) {
-  this.body.push(t.variableDeclaration(node.kind, node.declarations.map(function (declar) {
-    return t.variableDeclarator(declar.id);
-  })));
-
-  var replace = [];
-
-  for (var i in node.declarations) {
-    var declar = node.declarations[i];
-    if (!declar.init) continue;
-
-    var expr = t.assignmentExpression("=", declar.id, declar.init);
-    replace.push(t.inherits(expr, declar));
-  }
-
-  return replace;
-};
-
-/**
- * Push the closure to the body.
- *
- * @param {Node} ret Identifier
- * @param {Node} call CallExpression
- */
-
-LetScoping.prototype.build = function (ret, call) {
-  var has = this.has;
-  if (has.hasReturn || has.hasBreak || has.hasContinue) {
-    this.buildHas(ret, call);
-  } else {
-    this.body.push(t.expressionStatement(call));
-  }
-};
-
-/**
- * Description
- *
- * @param {Node} ret Identifier
- * @param {Node} call CallExpression
- */
-
-LetScoping.prototype.buildHas = function (ret, call) {
-  var body = this.body;
-
-  body.push(t.variableDeclaration("var", [
-    t.variableDeclarator(ret, call)
-  ]));
-
-  var loopParent = this.loopParent;
-  var retCheck;
-  var has = this.has;
-  var cases = [];
-
-  if (has.hasReturn) {
-    // typeof ret === "object"
-    retCheck = util.template("let-scoping-return", {
-      RETURN: ret
-    });
-  }
-
-  if (has.hasBreak || has.hasContinue) {
-    // ensure that the parent has a label as we're building a switch and we
-    // need to be able to access it
-    var label = loopParent.label = loopParent.label || this.file.generateUidIdentifier("loop", this.scope);
-
-    if (has.hasBreak) {
-      cases.push(t.switchCase(t.literal("break"), [t.breakStatement(label)]));
-    }
-
-    if (has.hasContinue) {
-      cases.push(t.switchCase(t.literal("continue"), [t.continueStatement(label)]));
-    }
-
-    if (has.hasReturn) {
-      cases.push(t.switchCase(null, [retCheck]));
-    }
-
-    if (cases.length === 1) {
-      var single = cases[0];
-      body.push(t.ifStatement(
-        t.binaryExpression("===", ret, single.test),
-        single.consequent[0]
-      ));
-    } else {
-      body.push(t.switchStatement(ret, cases));
-    }
-  } else {
-    if (has.hasReturn) body.push(retCheck);
-  }
-};

lib/6to5/transformation/transformers/es6-modules.js

@@ -1,48 +0,0 @@
-var t = require("../../types");
-
-exports.ast = {
-  before: function (ast, file) {
-    ast.program.body = file.dynamicImports.concat(ast.program.body);
-  }
-};
-
-exports.ImportDeclaration = function (node, parent, file) {
-  var nodes = [];
-
-  if (node.specifiers.length) {
-    for (var i in node.specifiers) {
-      file.moduleFormatter.importSpecifier(node.specifiers[i], node, nodes, parent);
-    }
-  } else {
-    file.moduleFormatter.importDeclaration(node, nodes, parent);
-  }
-
-  if (nodes.length === 1) {
-    // inherit `_blockHoist`
-    // this for `_blockHoist` in File.prototype.addImport
-    nodes[0]._blockHoist = node._blockHoist;
-  }
-
-  return nodes;
-};
-
-exports.ExportDeclaration = function (node, parent, file) {
-  var nodes = [];
-
-  if (node.declaration) {
-    // make sure variable exports have an initialiser
-    // this is done here to avoid duplicating it in the module formatters
-    if (t.isVariableDeclaration(node.declaration)) {
-      var declar = node.declaration.declarations[0];
-      declar.init = declar.init || t.identifier("undefined");
-    }
-
-    file.moduleFormatter.exportDeclaration(node, nodes, parent);
-  } else {
-    for (var i in node.specifiers) {
-      file.moduleFormatter.exportSpecifier(node.specifiers[i], node, nodes, parent);
-    }
-  }
-
-  return nodes;
-};

lib/6to5/transformation/transformers/es6-property-method-assignment.js

@@ -1,69 +0,0 @@
-var traverse = require("../../traverse");
-var util     = require("../../util");
-var t        = require("../../types");
-
-exports.Property = function (node, parent, file, scope) {
-  if (!node.method) return;
-
-  node.method = false;
-
-  var key = t.toComputedKey(node, node.key);
-  if (!t.isLiteral(key)) return; // we can't set a function id with this
-
-  var id = t.toIdentifier(key.value);
-  key = t.identifier(id);
-
-  var selfReference = false;
-  var outerDeclar = scope.get(id, true);
-
-  traverse(node, {
-    enter: function (node, parent, scope) {
-      // check if this node is an identifier that matches the same as our function id
-      if (!t.isIdentifier(node, { name: id })) return;
-
-      // check if this node is the one referenced
-      if (!t.isReferenced(node, parent)) return;
-
-      // check that we don't have a local variable declared as that removes the need
-      // for the wrapper
-      var localDeclar = scope.get(id, true);
-      if (localDeclar !== outerDeclar) return;
-
-      selfReference = true;
-      this.stop();
-    }
-  }, scope);
-
-  if (selfReference) {
-    node.value = util.template("property-method-assignment-wrapper", {
-      FUNCTION: node.value,
-      FUNCTION_ID: key,
-      FUNCTION_KEY: file.generateUidIdentifier(id, scope),
-      WRAPPER_KEY: file.generateUidIdentifier(id + "Wrapper", scope)
-    });
-  } else {
-    node.value.id = key;
-  }
-};
-
-exports.ObjectExpression = function (node) {
-  var mutatorMap = {};
-  var hasAny = false;
-
-  node.properties = node.properties.filter(function (prop) {
-    if (prop.kind === "get" || prop.kind === "set") {
-      hasAny = true;
-      util.pushMutatorMap(mutatorMap, prop.key, prop.kind, prop.computed, prop.value);
-      return false;
-    } else {
-      return true;
-    }
-  });
-
-  if (!hasAny) return;
-
-  return t.callExpression(
-    t.memberExpression(t.identifier("Object"), t.identifier("defineProperties")),
-    [node, util.buildDefineProperties(mutatorMap)]
-  );
-};

lib/6to5/transformation/transformers/es6-property-name-shorthand.js

@@ -1,8 +0,0 @@
-var t = require("../../types");
-var _ = require("lodash");
-
-exports.Property = function (node) {
-  if (!node.shorthand) return;
-  node.shorthand = false;
-  node.key = t.removeComments(_.clone(node.key));
-};

lib/6to5/transformation/transformers/es6-rest-parameters.js

@@ -1,36 +0,0 @@
-var util = require("../../util");
-var t    = require("../../types");
-
-exports.Function = function (node, parent, file) {
-  if (!node.rest) return;
-
-  var rest = node.rest;
-  delete node.rest;
-
-  t.ensureBlock(node);
-
-  var argsId = t.identifier("arguments");
-  argsId._ignoreAliasFunctions = true;
-
-  var start = t.literal(node.params.length);
-  var key = file.generateUidIdentifier("key");
-
-  var arrKey = key;
-  if (node.params.length) {
-    arrKey = t.binaryExpression("-", arrKey, start);
-  }
-
-  node.body.body.unshift(
-    t.variableDeclaration("var", [
-      t.variableDeclarator(rest, t.arrayExpression([]))
-    ]),
-
-    util.template("rest", {
-      ARGUMENTS: argsId,
-      ARRAY_KEY: arrKey,
-      START: start,
-      ARRAY: rest,
-      KEY: key
-    })
-  );
-};

lib/6to5/transformation/transformers/es6-unicode-regex.js

@@ -1,14 +0,0 @@
-var rewritePattern = require("regexpu/rewrite-pattern");
-var _              = require("lodash");
-
-exports.Literal = function (node) {
-  var regex = node.regex;
-  if (!regex) return;
-
-  var flags = regex.flags.split("");
-  if (regex.flags.indexOf("u") < 0) return;
-  _.pull(flags, "u");
-
-  regex.pattern = rewritePattern(regex.pattern, regex.flags);
-  regex.flags   = flags.join("");
-};

lib/6to5/transformation/transformers/es7-abstract-references.js

@@ -1,111 +0,0 @@
-// https://github.com/zenparsing/es-abstract-refs
-
-var util = require("../../util");
-var t    = require("../../types");
-
-exports.experimental = true;
-
-var container = function (parent, call, ret) {
-  if (t.isExpressionStatement(parent)) {
-    // we don't need to worry about return values
-    return call;
-  } else {
-    var exprs = [];
-    if (t.isSequenceExpression(call)) {
-      exprs = call.expressions;
-    } else {
-      exprs.push(call);
-    }
-    exprs.push(ret);
-    return t.sequenceExpression(exprs);
-  }
-};
-
-exports.AssignmentExpression = function (node, parent, file, scope) {
-  var left = node.left;
-  if (!t.isVirtualPropertyExpression(left)) return;
-
-  var value = node.right;
-  var temp;
-
-  // we need to return `node.right`
-  if (!t.isExpressionStatement(parent)) {
-    temp = scope.generateTempBasedOnNode(node.right, file);
-    if (temp) value = temp;
-  }
-
-  if (node.operator !== "=") {
-    value = t.binaryExpression(
-      node.operator[0],
-      util.template("abstract-expression-get", {
-        PROPERTY: node.property,
-        OBJECT:   node.object
-      }),
-      value
-    );
-  }
-
-  var call = util.template("abstract-expression-set", {
-    PROPERTY: left.property,
-    OBJECT:   left.object,
-    VALUE:    value
-  });
-
-  if (temp) {
-    call = t.sequenceExpression([
-      t.assignmentExpression("=", temp, node.right),
-      call
-    ]);
-  }
-
-  return container(parent, call, value);
-};
-
-exports.UnaryExpression = function (node, parent) {
-  var arg = node.argument;
-  if (!t.isVirtualPropertyExpression(arg)) return;
-  if (node.operator !== "delete") return;
-
-  var call = util.template("abstract-expression-delete", {
-    PROPERTY: arg.property,
-    OBJECT:   arg.object
-  });
-
-  return container(parent, call, t.literal(true));
-};
-
-exports.CallExpression = function (node, parent, file, scope) {
-  var callee = node.callee;
-  if (!t.isVirtualPropertyExpression(callee)) return;
-
-  var temp = scope.generateTempBasedOnNode(callee.object, file);
-
-  var call = util.template("abstract-expression-call", {
-    PROPERTY: callee.property,
-    OBJECT:   temp || callee.object
-  });
-
-  call.arguments = call.arguments.concat(node.arguments);
-
-  if (temp) {
-    return t.sequenceExpression([
-      t.assignmentExpression("=", temp, callee.object),
-      call
-    ]);
-  } else {
-    return call;
-  }
-};
-
-exports.VirtualPropertyExpression = function (node) {
-  return util.template("abstract-expression-get", {
-    PROPERTY: node.property,
-    OBJECT:   node.object
-  });
-};
-
-exports.PrivateDeclaration = function (node) {
-  return t.variableDeclaration("const", node.declarations.map(function (id) {
-    return t.variableDeclarator(id, t.newExpression(t.identifier("WeakMap"), []));
-  }));
-};

lib/6to5/transformation/transformers/es7-array-comprehension.js

@@ -1,62 +0,0 @@
-var traverse = require("../../traverse");
-var util     = require("../../util");
-var t        = require("../../types");
-
-exports.experimental = true;
-
-var build = function (node, parent, file, scope) {
-  var uid = scope.generateUidBasedOnNode(parent, file);
-
-  var container = util.template("array-comprehension-container", {
-    KEY: uid
-  });
-  container.callee._aliasFunction = true;
-
-  var block = container.callee.body;
-  var body  = block.body;
-
-  if (traverse.hasType(node, "YieldExpression", t.FUNCTION_TYPES)) {
-    container.callee.generator = true;
-    container = t.yieldExpression(container, true);
-  }
-
-  var returnStatement = body.pop();
-
-  body.push(exports._build(node, function () {
-    return util.template("array-push", {
-      STATEMENT: node.body,
-      KEY:       uid
-    }, true);
-  }));
-  body.push(returnStatement);
-
-  return container;
-};
-
-exports._build = function (node, buildBody) {
-  var self = node.blocks.shift();
-  if (!self) return;
-
-  var child = exports._build(node, buildBody);
-  if (!child) {
-    // last item
-    child = buildBody();
-
-    // add a filter as this is our final stop
-    if (node.filter) {
-      child = t.ifStatement(node.filter, t.blockStatement([child]));
-    }
-  }
-
-  return t.forOfStatement(
-    t.variableDeclaration("let", [t.variableDeclarator(self.left)]),
-    self.right,
-    t.blockStatement([child])
-  );
-};
-
-exports.ComprehensionExpression = function (node, parent, file, scope) {
-  if (node.generator) return;
-
-  return build(node, parent, file, scope);
-};

lib/6to5/transformation/transformers/es7-exponentiation-operator.js

@@ -1,18 +0,0 @@
-// https://github.com/rwaldron/exponentiation-operator
-
-exports.experimental = true;
-
-var t = require("../../types");
-var pow = t.memberExpression(t.identifier("Math"), t.identifier("pow"));
-
-exports.AssignmentExpression = function (node) {
-  if (node.operator !== "**=") return;
-  node.operator = "=";
-  node.right = t.callExpression(pow, [node.left, node.right]);
-};
-
-exports.BinaryExpression = function (node) {
-  if (node.operator !== "**") return;
-
-  return t.callExpression(pow, [node.left, node.right]);
-};

lib/6to5/transformation/transformers/es7-generator-comprehension.js

@@ -1,18 +0,0 @@
-var arrayComprehension = require("./es7-array-comprehension");
-var t                  = require("../../types");
-
-exports.experimental = true;
-
-exports.ComprehensionExpression = function (node) {
-  if (!node.generator) return;
-
-  var body = [];
-  var container = t.functionExpression(null, [], t.blockStatement(body), true);
-  container._aliasFunction = true;
-
-  body.push(arrayComprehension._build(node, function () {
-    return t.expressionStatement(t.yieldExpression(node.body));
-  }));
-
-  return t.callExpression(container, []);
-};

lib/6to5/transformation/transformers/es7-object-spread.js

@@ -1,46 +0,0 @@
-// https://github.com/sebmarkbage/ecmascript-rest-spread
-
-var t = require("../../types");
-
-exports.experimental = true;
-
-exports.ObjectExpression = function (node, parent, file) {
-  var hasSpread = false;
-  var i;
-  var prop;
-  for (i in node.properties) {
-    prop = node.properties[i];
-    if (t.isSpreadProperty(prop)) {
-      hasSpread = true;
-      break;
-    }
-  }
-  if (!hasSpread) return;
-
-  var args = [];
-  var props = [];
-
-  var push = function () {
-    if (!props.length) return;
-    args.push(t.objectExpression(props));
-    props = [];
-  };
-
-  for (i in node.properties) {
-    prop = node.properties[i];
-    if (t.isSpreadProperty(prop)) {
-      push();
-      args.push(prop.argument);
-    } else {
-      props.push(prop);
-    }
-  }
-
-  push();
-
-  if (!t.isObjectExpression(args[0])) {
-    args.unshift(t.objectExpression([]));
-  }
-
-  return t.callExpression(file.addHelper("extends"), args);
-};

lib/6to5/transformation/transformers/optional-async-to-generator.js

@@ -1,11 +0,0 @@
-var bluebirdCoroutines = require("./optional-bluebird-coroutines");
-
-exports.optional = true;
-
-exports.manipulateOptions = bluebirdCoroutines.manipulateOptions;
-
-exports.Function = function (node, parent, file) {
-  if (!node.async || node.generator) return;
-
-  return bluebirdCoroutines._Function(node, file.addHelper("async-to-generator"));
-};

lib/6to5/transformation/transformers/optional-bluebird-coroutines.js

@@ -1,43 +0,0 @@
-var traverse = require("../../traverse");
-var t        = require("../../types");
-
-exports.manipulateOptions = function (opts) {
-  opts.experimental = true;
-  opts.blacklist.push("generators");
-};
-
-exports.optional = true;
-
-exports._Function = function (node, callId) {
-  node.async = false;
-  node.generator = true;
-
-  traverse(node, {
-    enter: function (node) {
-      if (t.isFunction(node)) this.skip();
-
-      if (t.isAwaitExpression(node)) {
-        node.type = "YieldExpression";
-      }
-    }
-  });
-
-  var call = t.callExpression(callId, [node]);
-
-  if (t.isFunctionDeclaration(node)) {
-    var declar = t.variableDeclaration("var", [
-      t.variableDeclarator(node.id, call)
-    ]);
-    declar._blockHoist = true;
-    return declar;
-  } else {
-    return call;
-  }
-};
-
-exports.Function = function (node, parent, file) {
-  if (!node.async || node.generator) return;
-
-  var id = file.addImport("bluebird");
-  return exports._Function(node, t.memberExpression(id, t.identifier("coroutine")));
-};

lib/6to5/transformation/transformers/optional-classes-fast-super.js

@@ -1,74 +0,0 @@
-var traverse = require("../../traverse");
-var util     = require("../../util");
-var t        = require("../../types");
-
-exports.optional = true;
-
-exports.Class = function (node) {
-  var superClass = node.superClass || t.identifier("Function");
-
-  var hasConstructor = false;
-  var body = node.body.body;
-
-  for (var i in body) {
-    var methodNode = body[i];
-
-    hasConstructor = hasConstructor || methodNode.key.name === "constructor";
-
-    traverse(methodNode, {
-      enter: function (node, parent) {
-        if (t.isIdentifier(node, { name: "super" })) {
-          return superIdentifier(superClass, methodNode, node, parent);
-        } else if (t.isCallExpression(node)) {
-          var callee = node.callee;
-          if (!t.isMemberExpression(callee)) return;
-          if (callee.object.name !== "super") return;
-
-          // super.test(); -> ClassName.prototype.MethodName.call(this);
-          t.appendToMemberExpression(callee, t.identifier("call"));
-          node.arguments.unshift(t.thisExpression());
-        }
-      }
-    });
-  }
-
-  if (node.superClass && !hasConstructor) {
-    body.unshift(t.methodDefinition(
-      t.identifier("constructor"),
-      util.template("class-super-constructor-call-fast", {
-        SUPER_NAME: superClass
-      })
-    ));
-  }
-};
-
-var superIdentifier = function (superClass, methodNode, id, parent) {
-  var methodName = methodNode.key;
-
-  if (parent.property === id) {
-    return;
-  } else if (t.isCallExpression(parent, { callee: id })) {
-    // super(); -> ClassName.prototype.MethodName.call(this);
-    parent.arguments.unshift(t.thisExpression());
-
-    if (methodName.name === "constructor") {
-      // constructor() { super(); }
-      return t.memberExpression(superClass, t.identifier("call"));
-    } else {
-      id = superClass;
-
-      // foo() { super(); }
-      if (!methodNode.static) {
-        id = t.memberExpression(id, t.identifier("prototype"));
-      }
-
-      id = t.memberExpression(id, methodName, methodNode.computed);
-      return t.memberExpression(id, t.identifier("call"));
-    }
-  } else if (t.isMemberExpression(parent) && !methodNode.static) {
-    // super.test -> ClassName.prototype.test
-    return t.memberExpression(superClass, t.identifier("prototype"));
-  } else {
-    return superClass;
-  }
-};