v5.5.3

This reverts commit f3acedbf08.

.babelrc

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

.editorconfig

@@ -4,7 +4,7 @@ root = true
 insert_final_newline = true
 charset = utf-8
 trim_trailing_whitespace = true
-insert_final_newline = true
+end_of_line = lf
 
 [*.{js,json}]
 indent_style = space

.eslintignore

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

.eslintrc

@@ -0,0 +1,25 @@
+{
+  "parser": "babel-eslint",
+  "rules": {
+    "strict": 0,
+    "no-underscore-dangle": 0,
+    "curly": 0,
+    "no-multi-spaces": 0,
+    "key-spacing": 0,
+    "no-return-assign": 0,
+    "consistent-return": 0,
+    "no-shadow": 0,
+    "comma-dangle": 0,
+    "no-use-before-define": 0,
+    "no-empty": 0,
+    "new-parens": 0,
+    "no-cond-assign": 0,
+    "no-fallthrough": 0,
+    "new-cap": 0,
+    "no-loop-func": 0,
+    "no-unreachable": 0
+  },
+  "env": {
+    "node": true
+  }
+}

.gitignore

@@ -1,6 +1,6 @@
 .DS_Store
 node_modules
-test/tmp
+test/core/tmp
 *.log
 *.cache
 /templates.json
@@ -8,8 +8,10 @@ test/tmp
 /browser.js
 /browser-polyfill.js
 /runtime.js
-coverage
-dist
-.package.json
-packages/6to5-runtime/*.js
-packages/6to5-runtime/regenerator/*.js
+/coverage
+/dist
+/.package.json
+/packages/babel-runtime/core-js
+/packages/babel-runtime/helpers/*.js
+/packages/babel-runtime/regenerator/*.js
+/lib

.gitmodules

@@ -1,12 +1,3 @@
 [submodule "vendor/traceur"]
 	path = vendor/traceur
 	url = https://github.com/google/traceur-compiler
-[submodule "vendor/regenerator"]
-	path = vendor/regenerator
-	url = https://github.com/6to5/regenerator-6to5
-[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

.jscsrc

@@ -1,58 +0,0 @@
-{
-  "excludeFiles": ["lib/6to5/transformation/templates"],
-  "disallowSpacesInNamedFunctionExpression": {
-    "beforeOpeningRoundBrace": true
-  },
-  "requireSpacesInAnonymousFunctionExpression": {
-    "beforeOpeningRoundBrace": true
-  },
-  "requireSpacesInAnonymousFunctionExpression": {
-    "beforeOpeningRoundBrace": true
-  },
-  "disallowSpacesInFunctionDeclaration": {
-    "beforeOpeningRoundBrace": true
-  },
-  "disallowSpacesInsideArrayBrackets": true,
-  "disallowSpacesInsideParentheses": true,
-  "disallowSpaceAfterObjectKeys": true,
-  "disallowSpaceAfterPrefixUnaryOperators": true,
-  "disallowSpaceBeforePostfixUnaryOperators": true,
-  "disallowSpaceBeforeBinaryOperators": [
-    ","
-  ],
-  "disallowMixedSpacesAndTabs": true,
-  "disallowTrailingWhitespace": true,
-  "disallowYodaConditions": true,
-  "disallowKeywords": [ "with" ],
-  "disallowMultipleLineBreaks": true,
-  "requireSpaceBeforeBlockStatements": true,
-  "requireParenthesesAroundIIFE": true,
-  "requireSpacesInConditionalExpression": true,
-  "requireBlocksOnNewline": 1,
-  "requireCommaBeforeLineBreak": true,
-  "requireSpaceBeforeBinaryOperators": true,
-  "requireSpaceAfterBinaryOperators": true,
-  "requireLineFeedAtFileEnd": true,
-  "requireCapitalizedConstructors": true,
-  "requireSpacesInForStatement": true,
-  "requireCurlyBraces": [
-    "do"
-  ],
-  "requireSpaceAfterKeywords": [
-    "if",
-    "else",
-    "for",
-    "while",
-    "do",
-    "switch",
-    "case",
-    "return",
-    "try",
-    "catch",
-    "typeof",
-    "function"
-  ],
-  "validateLineBreaks": "LF",
-  "validateQuoteMarks": "\"",
-  "validateIndentation": 2
-}

.jshintignore

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

.jshintrc

@@ -1,27 +0,0 @@
-{
-  "esnext": true,
-  "indent": 2,
-  "freeze": true,
-  "validthis": true,
-  "camelcase": true,
-  "unused": true,
-  "eqnull": true,
-  "newcap": true,
-  "supernew": true,
-  "noyield": true,
-  "evil": true,
-  "node": true,
-  "boss": true,
-  "expr": true,
-  "undef": true,
-  "maxparams": 5,
-  "maxdepth": 4,
-
-  "globals": {
-    "window": true,
-    "suite": true,
-    "set": true,
-    "before": true,
-    "bench": true
-  }
-}

.npmignore

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

.travis.yml

@@ -1,12 +1,11 @@
-sudo: false
+#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

@@ -1,46 +1,175 @@
+# NOTE: BEFORE OPENING AN ISSUE PLEASE SEE THE [README](https://github.com/babel/babel#readme).
+
+----
+
+<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
 
-Contributions are always welcome, no matter how large or small. 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
 
+>Note: Babel moves fast. Only the latest release is guaranteed to build correctly.
+>Older releases are not officially supported. If you attempt to build them, do that at your own risk.
+
+#### 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/6to5.git && cd 6to5`)
+* 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

@@ -1,75 +1,82 @@
+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
-JSCS_CMD = node_modules/jscs/bin/jscs
+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 publish-runtime
+.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
+
+lint:
+	eslint src/babel
 
 build:
 	mkdir -p dist
+	make build-core
 
 	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/api/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
-	$(JSCS_CMD) 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:
 	rm -rf coverage
-	export SIMPLE_6TO5_TESTS=1; \
-	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 lint build test
 
 test-browser:
 	mkdir -p dist
 
 	node tools/cache-templates
-	node tools/cache-tests
-	node $(BROWSERIFY_CMD) -e test/_browser.js >dist/6to5-test.js
+	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
 
-publish:
+publish: lint
 	git pull --rebase
 
 	make test
@@ -78,9 +85,15 @@ publish:
 	npm version $$version --message "v%s"
 
 	make build
-	cp dist/6to5.min.js browser.js
-	cp dist/polyfill.min.js browser-polyfill.js
-	cp dist/runtime.min.js runtime.js
+
+	cp dist/babel.js browser.js
+	cp dist/babel.min.js browser.min.js
+
+	cp dist/polyfill.js browser-polyfill.js
+	cp dist/polyfill.min.js browser-polyfill.min.js
+
+	cp dist/external-helpers.js external-helpers.js
+	cp dist/external-helpers.min.js external-helpers.min.js
 
 	node tools/cache-templates
 	test -f templates.json
@@ -89,29 +102,27 @@ publish:
 
 	git push --follow-tags
 
-	make publish-core
+	make publish-cli
 	make publish-runtime
 
-	rm -rf templates.json browser.js browser-polyfill.js runtime.js
+	rm -rf templates.json browser.js browser.min.js browser-polyfill.js browser-polyfill.min.js external-helpers.js external-helpers.min.js
 
 publish-runtime:
 	cd packages; \
 	node build-runtime.js; \
-	cd 6to5-runtime; \
+	cd babel-runtime; \
 	npm publish
 
-publish-core:
-	tools/generate-core-package-json >package2.json
-	mv package.json .package.json
-	mv package2.json package.json
-
+publish-cli:
+	cd packages; \
+	node build-cli.js; \
+	cd babel-cli; \
 	npm publish
 
-	rm -rf package.json
-	mv .package.json package.json
-
 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

@@ -1,3 +0,0 @@
-# Notes
-
- * Wildcard exports/imports wont normalize if `export default` is a non-object. See [#224](https://github.com/6to5/6to5/issues/224).

README.md

@@ -1,12 +1,21 @@
 <p align="center">
-  <img alt="6to5" src="https://raw.githubusercontent.com/6to5/logo/master/logo.png" width="546">
+  <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">
+  Issues without instructions to reproduce <strong>will be immediately closed<strong>.
+</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-minify

@@ -1,7 +0,0 @@
-#!/usr/bin/env node
-
-var opts = require("./6to5").opts;
-opts.optional = (opts.optional || []).concat("minification");
-opts.format = {
-  compact: true
-};

bin/6to5-node

@@ -1,69 +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  = [__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":
-    case "--use-strict":
-      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/build-runtime");
-console.log(runtime());

bin/6to5/index.js

@@ -1,130 +0,0 @@
-#!/usr/bin/env node
-
-var commander = require("commander");
-var transform = require("../../lib/6to5/transformation");
-var util      = require("../../lib/6to5/util");
-var fs        = require("fs");
-var each      = require("lodash/collection/each");
-var keys      = require("lodash/object/keys");
-
-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("-L, --loose [list]", "List of transformers to enable loose mode ON", 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("-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("--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();
-
-    each(keys(obj).sort(), function (key) {
-      if (key[0] === "_") return;
-
-      if (obj[key].optional) {
-        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,
-  sourceMapName:          commander.outFile,
-  experimental:           commander.experimental,
-  reactCompat:            commander.reactCompat,
-  playground:             commander.playground,
-  moduleIds:              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,
-  loose:                  commander.loose
-};
-
-setTimeout(function () {
-  // this is just a hack to give `6to5-minify` and other files including this
-  // time to modify `exports.opts`
-
-  var fn;
-
-  if (commander.outDir) {
-    fn = require("./dir");
-  } else {
-    fn = require("./file");
-  }
-
-  fn(commander, filenames, exports.opts);
-}, 0);

doc/index.md

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

lib/6to5/api/node.js

@@ -1,58 +0,0 @@
-"use strict";
-
-var isFunction = require("lodash/lang/isFunction");
-var transform  = require("../transformation");
-var util       = require("../util");
-var fs         = require("fs");
-
-exports.version = require("../../../package").version;
-
-exports.runtime = require("../build-runtime");
-
-exports.types = require("../types");
-
-exports.register = function (opts) {
-  var register = require("./register/node");
-  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/api/register/browser.js

@@ -1,7 +0,0 @@
-"use strict";
-
-// required to safely use 6to5/register within a browserify codebase
-
-module.exports = function () {};
-
-require("../../polyfill");

lib/6to5/api/register/cache.js

@@ -1,36 +0,0 @@
-"use strict";
-
-var path = require("path");
-var os   = require("os");
-var fs   = require("fs");
-
-var FILENAME = path.join(os.tmpdir(), "6to5.json");
-var data = {};
-
-exports.save = function () {
-  fs.writeFileSync(FILENAME, JSON.stringify(data, null, "  "));
-};
-
-exports.load = function () {
-  process.on("exit", exports.save);
-
-  var sigint = function () {
-    process.removeListener("SIGINT", sigint);
-    exports.save();
-    process.kill(process.pid, "SIGINT");
-  };
-
-  process.on("SIGINT", sigint);
-
-  if (!fs.existsSync(FILENAME)) return;
-
-  try {
-    data = JSON.parse(fs.readFileSync(FILENAME));
-  } catch (err) {
-    return;
-  }
-};
-
-exports.get = function () {
-  return data;
-};

lib/6to5/build-helpers.js

@@ -1,13 +0,0 @@
-var File = require("./transformation/file");
-var util = require("./util");
-var each = require("lodash/collection/each");
-var t    = require("./types");
-
-module.exports = function (body, namespace) {
-  each(File.helpers, function (name) {
-    var key = t.identifier(t.toIdentifier(name));
-    body.push(t.expressionStatement(
-      t.assignmentExpression("=", t.memberExpression(namespace, key), util.template(name))
-    ));
-  });
-};

lib/6to5/build-runtime.js

@@ -1,25 +0,0 @@
-"use strict";
-
-var buildHelpers = require("./build-helpers");
-var generator    = require("./generation");
-var util         = require("./util");
-var t            = require("./types");
-
-module.exports = function () {
-  var namespace = t.identifier("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([]))
-    )
-  ]));
-
-  buildHelpers(body, namespace);
-
-  return generator(tree).code;
-};

lib/6to5/detection/index.js

@@ -1,29 +0,0 @@
-module.exports = detect;
-
-var SYNTAX_KEYS = require("./syntax-keys");
-var traverse    = require("../traversal");
-var visitors    = traverse.explode(require("./visitors"));
-
-function detect(ast) {
-  var stats = {
-    syntax: {},
-    builtins: {}
-  };
-
-  var detectedSyntax = function (name) {
-    stats.syntax[name] = true;
-  };
-
-  traverse(ast, {
-    enter: function (node, parent) {
-      if (SYNTAX_KEYS[node.type]) {
-        detectedSyntax(SYNTAX_KEYS[node.type]);
-      }
-
-      var visitor = visitors[node.type];
-      if (visitor) visitor(node, parent, detectedSyntax);
-    }
-  });
-
-  return stats;
-}

lib/6to5/detection/syntax-keys.json

@@ -1,84 +0,0 @@
-{
-  "ArrowFunctionExpression":   "es6.arrowFunctions",
-
-  "AwaitExpression":           "es7.asyncFunctions",
-
-  "ClassBody":                 "es6.classes",
-  "ClassDeclaration":          "es6.classes",
-  "ClassExpression":           "es6.classes",
-  "MethodDefinition":          "es6.classes",
-
-  "ComprehensionBlock":        "es7.comprehensions",
-  "ComprehensionExpression":   "es7.comprehensions",
-
-  "ForOfStatement":            "es6.forOf",
-
-  "ExportBatchSpecifier":      "es6.modules",
-  "ExportDeclaration":         "es6.modules",
-  "ExportSpecifier":           "es6.modules",
-  "ImportBatchSpecifier":      "es6.modules",
-  "ImportDeclaration":         "es6.modules",
-  "ImportSpecifier":           "es6.modules",
-
-  "ArrayPattern":              "es6.destructuring",
-  "AssignmentPattern":         "es6.destructuring",
-  "ObjectPattern":             "es6.destructuring",
-
-  "RestElement":               "es6.parameters.rest",
-
-  "SpreadElement":             "es6.spread",
-
-  "SpreadProperty":            "es7.objectSpread",
-
-  "TaggedTemplateExpression":  "es6.templateLiterals",
-  "TemplateElement":           "es6.templateLiterals",
-  "TemplateLiteral":           "es6.templateLiterals",
-
-  "VirtualPropertyExpression": "es7.abstractReferences",
-  "PrivateDeclaration":        "es7.abstractReferences",
-
-  "YieldExpression":           "es6.generators",
-
-  "AnyTypeAnnotation":           "flow",
-  "ArrayTypeAnnotation":         "flow",
-  "BooleanTypeAnnotation":       "flow",
-  "ClassProperty":               "flow",
-  "DeclareClass":                "flow",
-  "DeclareFunction":             "flow",
-  "DeclareModule":               "flow",
-  "DeclareVariable":             "flow",
-  "FunctionTypeAnnotation":      "flow",
-  "FunctionTypeParam":           "flow",
-  "GenericTypeAnnotation":       "flow",
-  "InterfaceExtends":            "flow",
-  "InterfaceDeclaration":        "flow",
-  "IntersectionTypeAnnotation":  "flow",
-  "NullableTypeAnnotation":      "flow",
-  "NumberTypeAnnotation":        "flow",
-  "StringLiteralTypeAnnotation": "flow",
-  "StringTypeAnnotation":        "flow",
-  "TupleTypeAnnotation":         "flow",
-  "TypeofTypeAnnotation":        "flow",
-  "TypeAlias":                   "flow",
-  "TypeAnnotation":              "flow",
-  "TypeParameterDeclaration":    "flow",
-  "TypeParameterInstantiation":  "flow",
-  "ObjectTypeAnnotation":        "flow",
-  "ObjectTypeCallProperty":      "flow",
-  "ObjectTypeIndexer":           "flow",
-  "ObjectTypeProperty":          "flow",
-  "QualifiedTypeIdentifier":     "flow",
-  "UnionTypeAnnotation":         "flow",
-  "VoidTypeAnnotation":          "flow",
-
-  "JSXAttribute":              "jsx",
-  "JSXClosingElement":         "jsx",
-  "JSXElement":                "jsx",
-  "JSXEmptyExpression":        "jsx",
-  "JSXExpressionContainer":    "jsx",
-  "JSXIdentifier":             "jsx",
-  "JSXMemberExpression":       "jsx",
-  "JSXNamespacedName":         "jsx",
-  "JSXOpeningElement":         "jsx",
-  "JSXSpreadAttribute":        "jsx"
-}

lib/6to5/detection/visitors.js

@@ -1,54 +0,0 @@
-var t = require("../types");
-var _ = require("lodash");
-
-exports.AssignmentExpression = function (node, parent, detected) {
-  if (node.operator === "**=") {
-    detected("es6.exponentation");
-  }
-};
-
-exports.BinaryExpression = function (node, parent, detected) {
-  if (node.operator === "**") {
-    detected("es6.exponentation");
-  }
-};
-
-exports.VariableDeclaration = function (node, parent, detected) {
-  if (node.kind === "let" || node.kind === "const") {
-    detected("es6.blockScoping");
-  }
-
-  if (node.kind === "const") {
-    detected("es6.constants");
-  }
-};
-
-exports.Property = function (node, parent, detected) {
-  if (node.shorthand || node.method) {
-    detected("es6.properties.shorthand");
-  }
-
-  if (node.kind === "set" || node.kind === "get") {
-    detected("es5.properties.mutators");
-  }
-
-  if (node.computed) {
-    detected("es6.properties.computed");
-  }
-};
-
-exports.AssignmentPattern = function (node, parent, detected) {
-  if (t.isFunction(parent) && _.contains(parent.params, node)) {
-    detected("es6.parameters.default");
-  }
-};
-
-exports.Function = function (node, parent, detected) {
-  if (node.generator) {
-    detected("es6.generators");
-  }
-
-  if (node.async) {
-    detected("es7.asyncFunctions");
-  }
-};

lib/6to5/generation/buffer.js

@@ -1,166 +0,0 @@
-"use strict";
-
-module.exports = Buffer;
-
-var isBoolean = require("lodash/lang/isBoolean");
-var contains  = require("lodash/collection/contains");
-var isNumber  = require("lodash/lang/isNumber");
-var util      = require("../util");
-
-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 || this.format.concise) {
-    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.space();
-};
-
-Buffer.prototype.space = function () {
-  if (this.format.compact) return;
-
-  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 || this.format.concise) {
-    this.space();
-    return;
-  }
-
-  removeLast = removeLast || false;
-
-  if (isNumber(i)) {
-    if (this.endsWith("{\n")) i--;
-    if (this.endsWith(util.repeat(i, "\n"))) return;
-
-    while (i--) {
-      this._newline(removeLast);
-    }
-    return;
-  }
-
-  if (isBoolean(i)) {
-    removeLast = i;
-  }
-
-  this._newline(removeLast);
-};
-
-Buffer.prototype._newline = function (removeLast) {
-  if (removeLast && this.isLast("\n")) this.removeLast("\n");
-
-  this.removeLast(" ");
-
-  // remove whitespace if last character was a newline
-  this._removeSpacesAfterLastNewline();
-  this._push("\n");
-};
-
-/**
- * If buffer ends with a newline and some spaces after it, trim those spaces.
- */
-Buffer.prototype._removeSpacesAfterLastNewline = function () {
-  var lastNewlineIndex = this.buf.lastIndexOf("\n");
-  if (lastNewlineIndex === -1)
-    return;
-
-  var index = this.buf.length - 1;
-  while (index > lastNewlineIndex) {
-    if (this.buf[index] !== " ") {
-      break;
-    }
-
-    index--;
-  }
-
-  if (index === lastNewlineIndex) {
-    this.buf = this.buf.substring(0, index + 1);
-  }
-};
-
-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/generators/base.js

@@ -1,21 +0,0 @@
-"use strict";
-
-exports.File = function (node, print) {
-  print(node.program);
-};
-
-exports.Program = function (node, print) {
-  print.sequence(node.body);
-};
-
-exports.BlockStatement = function (node, print) {
-  if (node.body.length === 0) {
-    this.push("{}");
-  } else {
-    this.push("{");
-    this.newline();
-    print.sequence(node.body, { indent: true });
-    this.removeLast("\n");
-    this.rightBrace();
-  }
-};

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

@@ -1,42 +0,0 @@
-"use strict";
-
-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

@@ -1,156 +0,0 @@
-"use strict";
-
-var util     = require("../../util");
-var t        = require("../../types");
-var isNumber = require("lodash/lang/isNumber");
-
-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.push(" ");
-  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.space();
-  this.push("?");
-  this.space();
-  print(node.consequent);
-  this.space();
-  this.push(":");
-  this.space();
-  print(node.alternate);
-};
-
-exports.NewExpression = function (node, print) {
-  this.push("new ");
-  print(node.callee);
-  if (node.arguments.length || this.format.parentheses) {
-    this.push("(");
-    print.list(node.arguments);
-    this.push(")");
-  }
-};
-
-exports.SequenceExpression = function (node, print) {
-  print.list(node.expressions);
-};
-
-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.list(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 || node.all) {
-      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) {
-  // todo: add cases where the spaces can be dropped when in compact mode
-  print(node.left);
-  this.push(" ");
-  this.push(node.operator);
-  this.push(" ");
-  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

@@ -1,35 +0,0 @@
-"use strict";
-
-exports.AnyTypeAnnotation =
-exports.ArrayTypeAnnotation =
-exports.BooleanTypeAnnotation =
-exports.ClassProperty =
-exports.DeclareClass =
-exports.DeclareFunction =
-exports.DeclareModule =
-exports.DeclareVariable =
-exports.FunctionTypeAnnotation =
-exports.FunctionTypeParam =
-exports.GenericTypeAnnotation =
-exports.InterfaceExtends =
-exports.InterfaceDeclaration =
-exports.IntersectionTypeAnnotation =
-exports.NullableTypeAnnotation =
-exports.NumberTypeAnnotation =
-exports.StringLiteralTypeAnnotation =
-exports.StringTypeAnnotation =
-exports.TupleTypeAnnotation =
-exports.TypeofTypeAnnotation =
-exports.TypeAlias =
-exports.TypeAnnotation =
-exports.TypeParameterDeclaration =
-exports.TypeParameterInstantiation =
-exports.ObjectTypeAnnotation =
-exports.ObjectTypeCallProperty =
-exports.ObjectTypeIndexer =
-exports.ObjectTypeProperty =
-exports.QualifiedTypeIdentifier =
-exports.UnionTypeAnnotation =
-exports.VoidTypeAnnotation = function () {
-  // todo: implement these once we have a `--keep-types` option
-};

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

@@ -1,78 +0,0 @@
-"use strict";
-
-var t    = require("../../types");
-var each = require("lodash/collection/each");
-
-exports.JSXAttribute = function (node, print) {
-  print(node.name);
-  if (node.value) {
-    this.push("=");
-    print(node.value);
-  }
-};
-
-exports.JSXIdentifier = function (node) {
-  this.push(node.name);
-};
-
-exports.JSXNamespacedName = function (node, print) {
-  print(node.namespace);
-  this.push(":");
-  print(node.name);
-};
-
-exports.JSXMemberExpression = function (node, print) {
-  print(node.object);
-  this.push(".");
-  print(node.property);
-};
-
-exports.JSXSpreadAttribute = function (node, print) {
-  this.push("{...");
-  print(node.argument);
-  this.push("}");
-};
-
-exports.JSXExpressionContainer = function (node, print) {
-  this.push("{");
-  print(node.expression);
-  this.push("}");
-};
-
-exports.JSXElement = function (node, print) {
-  var self = this;
-
-  var open = node.openingElement;
-  print(open);
-  if (open.selfClosing) return;
-
-  this.indent();
-  each(node.children, function (child) {
-    if (t.isLiteral(child)) {
-      self.push(child.value);
-    } else {
-      print(child);
-    }
-  });
-  this.dedent();
-
-  print(node.closingElement);
-};
-
-exports.JSXOpeningElement = function (node, print) {
-  this.push("<");
-  print(node.name);
-  if (node.attributes.length > 0) {
-    this.push(" ");
-    print.join(node.attributes, { separator: " " });
-  }
-  this.push(node.selfClosing ? " />" : ">");
-};
-
-exports.JSXClosingElement = function (node, print) {
-  this.push("</");
-  print(node.name);
-  this.push(">");
-};
-
-exports.JSXEmptyExpression = function () {};

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

@@ -1,68 +0,0 @@
-"use strict";
-
-var t = require("../../types");
-
-exports._params = function (node, print) {
-  this.push("(");
-  print.list(node.params);
-  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.push(" ");
-  print(value.body);
-};
-
-exports.FunctionDeclaration =
-exports.FunctionExpression = function (node, print) {
-  if (node.async) this.push("async ");
-  this.push("function");
-  if (node.generator) this.push("*");
-
-  if (node.id) {
-    this.push(" ");
-    print(node.id);
-  } else {
-    this.space();
-  }
-
-  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 && 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

@@ -1,98 +0,0 @@
-"use strict";
-
-var t    = require("../../types");
-var each = require("lodash/collection/each");
-
-exports.ImportSpecifier = function (node, print) {
-  if (t.isSpecifierDefault(node)) {
-    print(t.getSpecifierName(node));
-  } 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 = t.isSpecifierDefault(spec);
-
-      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

@@ -1,9 +0,0 @@
-"use strict";
-
-var each = require("lodash/collection/each");
-
-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/statements.js

@@ -1,221 +0,0 @@
-"use strict";
-
-var util = require("../../util");
-var t    = require("../../types");
-
-exports.WithStatement = function (node, print) {
-  this.keyword("with");
-  this.push("(");
-  print(node.object);
-  this.push(")");
-  print.block(node.body);
-};
-
-exports.IfStatement = function (node, print) {
-  this.keyword("if");
-  this.push("(");
-  print(node.test);
-  this.push(")");
-  this.space();
-
-  print.indentOnComments(node.consequent);
-
-  if (node.alternate) {
-    if (this.isLast("}")) this.push(" ");
-    this.keyword("else");
-
-    if (this.format.format && !t.isBlockStatement(node.alternate)) {
-      this.push(" ");
-    }
-
-    print.indentOnComments(node.alternate);
-  }
-};
-
-exports.ForStatement = function (node, print) {
-  this.keyword("for");
-  this.push("(");
-
-  print(node.init);
-  this.push(";");
-
-  if (node.test) {
-    this.push(" ");
-    print(node.test);
-  }
-  this.push(";");
-
-  if (node.update) {
-    this.push(" ");
-    print(node.update);
-  }
-
-  this.push(")");
-  print.block(node.body);
-};
-
-exports.WhileStatement = function (node, print) {
-  this.keyword("while");
-  this.push("(");
-  print(node.test);
-  this.push(")");
-  print.block(node.body);
-};
-
-var buildForXStatement = function (op) {
-  return function (node, print) {
-    this.keyword("for");
-    this.push("(");
-    print(node.left);
-    this.push(" " + op + " ");
-    print(node.right);
-    this.push(")");
-    print.block(node.body);
-  };
-};
-
-exports.ForInStatement = buildForXStatement("in");
-exports.ForOfStatement = buildForXStatement("of");
-
-exports.DoWhileStatement = function (node, print) {
-  this.keyword("do");
-  print(node.body);
-  this.space();
-  this.keyword("while");
-  this.push("(");
-  print(node.test);
-  this.push(");");
-};
-
-var buildLabelStatement = function (prefix, key) {
-  return function (node, print) {
-    this.push(prefix);
-
-    var label = node[key || "label"];
-    if (label) {
-      this.push(" ");
-      print(label);
-    }
-
-    this.semicolon();
-  };
-};
-
-exports.ContinueStatement = buildLabelStatement("continue");
-exports.ReturnStatement   = buildLabelStatement("return", "argument");
-exports.BreakStatement    = buildLabelStatement("break");
-
-exports.LabeledStatement = function (node, print) {
-  print(node.label);
-  this.push(": ");
-  print(node.body);
-};
-
-exports.TryStatement = function (node, print) {
-  this.keyword("try");
-  print(node.block);
-  this.space();
-
-  // Esprima bug puts the catch clause in a `handlers` array.
-  // see https://code.google.com/p/esprima/issues/detail?id=433
-  // We run into this from regenerator generated ast.
-  if (node.handlers) {
-    print(node.handlers[0]);
-  } else {
-    print(node.handler);
-  }
-
-  if (node.finalizer) {
-    this.space();
-    this.push("finally ");
-    print(node.finalizer);
-  }
-};
-
-exports.CatchClause = function (node, print) {
-  this.keyword("catch");
-  this.push("(");
-  print(node.param);
-  this.push(") ");
-  print(node.body);
-};
-
-exports.ThrowStatement = function (node, print) {
-  this.push("throw ");
-  print(node.argument);
-  this.semicolon();
-};
-
-exports.SwitchStatement = function (node, print) {
-  this.keyword("switch");
-  this.push("(");
-  print(node.discriminant);
-  this.push(")");
-  this.space();
-  this.push("{");
-  print.sequence(node.cases, { indent: true });
-  this.push("}");
-};
-
-exports.SwitchCase = function (node, print) {
-  if (node.test) {
-    this.push("case ");
-    print(node.test);
-    this.push(":");
-  } else {
-    this.push("default:");
-  }
-
-  this.newline();
-  print.sequence(node.consequent, { indent: true });
-};
-
-exports.DebuggerStatement = function () {
-  this.push("debugger;");
-};
-
-exports.VariableDeclaration = function (node, print, parent) {
-  this.push(node.kind + " ");
-
-  var hasInits = false;
-  // don't add whitespace to loop heads
-  if (!t.isFor(parent)) {
-    for (var i = 0; i < node.declarations.length; i++) {
-      if (node.declarations[i].init) {
-        // has an init so let's split it up over multiple lines
-        hasInits = true;
-      }
-    }
-  }
-
-  var sep = ",";
-  if (hasInits) {
-    sep += "\n" + util.repeat(node.kind.length + 1);
-  } else {
-    sep += " ";
-  }
-
-  print.list(node.declarations, { separator: sep });
-
-  if (!t.isFor(parent)) {
-    this.semicolon();
-  }
-};
-
-exports.PrivateDeclaration = function (node, print) {
-  this.push("private ");
-  print.join(node.declarations, { separator: ", " });
-  this.semicolon();
-};
-
-exports.VariableDeclarator = function (node, print) {
-  if (node.init) {
-    print(node.id);
-    this.space();
-    this.push("=");
-    this.space();
-    print(node.init);
-  } else {
-    print(node.id);
-  }
-};

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

@@ -1,32 +0,0 @@
-"use strict";
-
-var each = require("lodash/collection/each");
-
-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

@@ -1,106 +0,0 @@
-"use strict";
-
-var each = require("lodash/collection/each");
-
-exports.Identifier = function (node) {
-  this.push(node.name);
-};
-
-exports.RestElement =
-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.list(props, { 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(":");
-    this.space();
-    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.format.compact) 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 === "number") {
-    this.push(val + "");
-  } else if (type === "boolean") {
-    this.push(val ? "true" : "false");
-  } else if (node.regex) {
-    this.push("/" + node.regex.pattern + "/" + node.regex.flags);
-  } else if (val === null) {
-    this.push("null");
-  }
-};

lib/6to5/generation/index.js

@@ -1,361 +0,0 @@
-"use strict";
-
-module.exports = function (ast, opts, code) {
-  var gen = new CodeGenerator(ast, opts, code);
-  return gen.generate();
-};
-
-module.exports.CodeGenerator = CodeGenerator;
-
-var detectIndent = require("detect-indent");
-var Whitespace   = require("./whitespace");
-var SourceMap    = require("./source-map");
-var Position     = require("./position");
-var Buffer       = require("./buffer");
-var extend       = require("lodash/object/extend");
-var merge        = require("lodash/object/merge");
-var each         = require("lodash/collection/each");
-var util         = require("../util");
-var n            = require("./node");
-var t            = require("../types");
-
-function CodeGenerator(ast, opts, code) {
-  opts = opts || {};
-
-  this.comments = ast.comments || [];
-  this.tokens   = ast.tokens || [];
-  this.format   = CodeGenerator.normalizeOptions(code, opts);
-  this.opts     = 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.normalizeOptions = function (code, opts) {
-  var style = "  ";
-  if (code) {
-    var indent = detectIndent(code).indent;
-    if (indent && indent !== " ") style = indent;
-  }
-
-  return merge({
-    parentheses: true,
-    comments: opts.comments == null || opts.comments,
-    compact: false,
-    concise: false,
-    indent: {
-      adjustMultilineComment: true,
-      style: 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.list = function (items, opts) {
-    opts = opts || {};
-
-    var sep = opts.separator || ", ";
-    if (self.format.compact) sep = ",";
-    opts.separator = sep;
-
-    print.join(items, 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 "";
-
-  if (parent && parent._compact) {
-    node._compact = true;
-  }
-
-  var oldConcise = this.format.concise;
-  if (node._compact) {
-    this.format.concise = true;
-  }
-
-  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));
-  }
-
-  this.format.concise = oldConcise;
-};
-
-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/node/index.js

@@ -1,112 +0,0 @@
-"use strict";
-
-module.exports = Node;
-
-var whitespace = require("./whitespace");
-var parens     = require("./parentheses");
-var t          = require("../../types");
-var each       = require("lodash/collection/each");
-var some       = require("lodash/collection/some");
-
-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.isUserWhitespacable = function (node) {
-  return t.isUserWhitespacable(node);
-};
-
-Node.needsWhitespace = function (node, parent, type) {
-  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.needsWhitespaceBefore = function (node, parent) {
-  return Node.needsWhitespace(node, parent, "before");
-};
-
-Node.needsWhitespaceAfter = function (node, parent) {
-  return Node.needsWhitespace(node, parent, "after");
-};
-
-Node.needsParens = function (node, parent) {
-  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.needsParensNoLineTerminator = function (node, parent) {
-  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, function (fn, key) {
-  Node.prototype[key] = function () {
-    // Avoid leaking arguments to prevent deoptimization
-    var args = new Array(arguments.length + 2);
-
-    args[0] = this.node;
-    args[1] = this.parent;
-
-    for (var i = 0; i < args.length; i++) {
-      args[i + 2] = arguments[i];
-    }
-
-    return Node[key].apply(null, args);
-  };
-});

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

@@ -1,84 +0,0 @@
-"use strict";
-
-var t        = require("../../types");
-var each     = require("lodash/collection/each");
-var map      = require("lodash/collection/map");
-var isNumber = require("lodash/lang/isNumber");
-
-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: {
-    LogicalExpression: function (node) {
-      return t.isFunction(node.left) || t.isFunction(node.right);
-    },
-
-    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

@@ -1,29 +0,0 @@
-"use strict";
-
-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 @@
-"use strict";
-
-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];
-
-  map.addMapping({
-    source: this.opts.sourceFileName,
-    generated: generated,
-    original: original
-  });
-};

lib/6to5/generation/whitespace.js

@@ -1,111 +0,0 @@
-"use strict";
-
-module.exports = Whitespace;
-
-var sortBy = require("lodash/collection/sortBy");
-
-/**
- * Returns `i`th number from `base`, continuing from 0 when `max` is reached.
- * Useful for shifting `for` loop by a fixed number but going over all items.
- *
- * @param {Number} i Current index in the loop
- * @param {Number} base Start index for which to return 0
- * @param {Number} max Array length
- * @returns {Number} shiftedIndex
- */
-function getLookupIndex(i, base, max) {
-  i += base;
-
-  if (i >= max)
-    i -= max;
-
-  return i;
-}
-
-function Whitespace(tokens, comments) {
-  this.tokens = sortBy(tokens.concat(comments), "start");
-  this.used   = {};
-
-  // Profiling this code shows that while generator passes over it, indexes
-  // returned by `getNewlinesBefore` and `getNewlinesAfter` are always increasing.
-
-  // We use this implementation detail for an optimization: instead of always
-  // starting to look from `this.tokens[0]`, we will start `for` loops from the
-  // previous successful match. We will enumerate all tokens—but the common
-  // case will be much faster.
-
-  this._lastFoundIndex = 0;
-}
-
-Whitespace.prototype.getNewlinesBefore = function (node) {
-  var startToken;
-  var endToken;
-  var tokens = this.tokens;
-  var token;
-
-  for (var j = 0; j < tokens.length; j++) {
-    // optimize for forward traversal by shifting for loop index
-    var i = getLookupIndex(j, this._lastFoundIndex, this.tokens.length);
-    token = tokens[i];
-
-    // this is the token this node starts with
-    if (node.start === token.start) {
-      startToken = tokens[i - 1];
-      endToken = token;
-
-      this._lastFoundIndex = i;
-      break;
-    }
-  }
-
-  return this.getNewlinesBetween(startToken, endToken);
-};
-
-Whitespace.prototype.getNewlinesAfter = function (node) {
-  var startToken;
-  var endToken;
-  var tokens = this.tokens;
-  var token;
-
-  for (var j = 0; j < tokens.length; j++) {
-    // optimize for forward traversal by shifting for loop index
-    var i = getLookupIndex(j, this._lastFoundIndex, this.tokens.length);
-    token = tokens[i];
-
-    // this is the token this node ends with
-    if (node.end === token.end) {
-      startToken = token;
-      endToken = tokens[i + 1];
-
-      this._lastFoundIndex = i;
-      break;
-    }
-  }
-
-  if (endToken.type.type === "eof") {
-    return 1;
-  } else {
-    var lines = this.getNewlinesBetween(startToken, endToken);
-    if (node.type === "Line" && !lines) {
-      // line comment
-      return 1;
-    } else {
-      return lines;
-    }
-  }
-};
-
-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 (typeof this.used[line] === "undefined") {
-      this.used[line] = true;
-      lines++;
-    }
-  }
-
-  return lines;
-};

lib/6to5/helpers/clone.js

@@ -1,12 +0,0 @@
-"use strict";
-
-module.exports = function cloneDeep(obj) {
-  var obj2 = {};
-  if (!obj) return obj2;
-
-  for (var key in obj) {
-    obj2[key] = obj[key];
-  }
-
-  return obj2;
-};

lib/6to5/helpers/code-frame.js

@@ -1,79 +0,0 @@
-// syntax highlighting based on https://github.com/dominictarr/ansi-highlight by the fantastic Dominic Tarr
-
-var supportsColor = require("supports-color");
-var tokenize      = require("js-tokenizer");
-var chalk         = require("chalk");
-var util          = require("../util");
-
-var defs = {
-  string1:  "red",
-  string2:  "red",
-  punct:    ["white", "bold"],
-  curly:    "green",
-  parens:   ["blue", "bold"],
-  square:   ["yellow"],
-  name:     "white",
-  keyword:  ["cyan"],
-  number:   "magenta",
-  regexp:   "magenta",
-  comment1: "grey",
-  comment2: "grey"
-};
-
-var highlight = function (text) {
-  var colorize = function (str, col) {
-    if (!col) return str;
-
-    if (Array.isArray(col)) {
-      col.forEach(function (col) {
-        str = chalk[col](str);
-      });
-    } else {
-      str = chalk[col](str);
-    }
-    return str;
-  };
-
-  return tokenize(text, true).map(function (str) {
-    var type = tokenize.type(str);
-    return colorize(str, defs[type]);
-  }).join("");
-};
-
-module.exports = function (lines, lineNumber, colNumber) {
-  colNumber = Math.max(colNumber, 0);
-
-  if (supportsColor) {
-    lines = highlight(lines);
-  }
-
-  lines = lines.split(/\r\n|[\n\r\u2028\u2029]/);
-
-  var start = Math.max(lineNumber - 3, 0);
-  var end   = Math.min(lines.length, lineNumber + 3);
-  var width = (end + "").length;
-
-  if (!lineNumber && !colNumber) {
-    start = 0;
-    end = lines.length;
-  }
-
-  return "\n" + lines.slice(start, end).map(function (line, i) {
-    var curr = i + start + 1;
-
-    var gutter = curr === lineNumber ? "> " : "  ";
-
-    var sep = curr + util.repeat(width + 1);
-    gutter += sep + "| ";
-
-    var str = gutter + line;
-
-    if (colNumber && curr === lineNumber) {
-      str += "\n";
-      str += util.repeat(gutter.length - 2);
-      str += "|" + util.repeat(colNumber) + "^";
-    }
-
-    return str;
-  }).join("\n");
-};

lib/6to5/helpers/levenshtein.js

@@ -1,38 +0,0 @@
-// taken from stackoverflow, it's crap i know.
-
-module.exports = function (a, b) {
-  if (a.length === 0) return b.length;
-  if (b.length === 0) return a.length;
-
-  var matrix = [];
-
-  // increment along the first column of each row
-  var i;
-  for (i = 0; i <= b.length; i++) {
-    matrix[i] = [i];
-  }
-
-  // increment each column in the first row
-  var j;
-  for (j = 0; j <= a.length; j++) {
-    matrix[0][j] = j;
-  }
-
-  // Fill in the rest of the matrix
-  for (i = 1; i <= b.length; i++) {
-    for (j = 1; j <= a.length; j++) {
-      if (b.charAt(i - 1) == a.charAt(j - 1)) {
-        matrix[i][j] = matrix[i - 1][j - 1];
-      } else {
-        matrix[i][j] = Math.min(
-          matrix[i - 1][j - 1] + 1, // substitution
-          Math.min(
-            matrix[i][j - 1] + 1, // insertion
-            matrix[i - 1][j] + 1) // deletion
-          );
-      }
-    }
-  }
-
-  return matrix[b.length][a.length];
-};

lib/6to5/helpers/object.js

@@ -1,5 +0,0 @@
-"use strict";
-
-module.exports = function () {
-  return Object.create(null);
-};

lib/6to5/helpers/parse.js

@@ -1,49 +0,0 @@
-var normalizeAst = require("./normalize-ast");
-var estraverse   = require("estraverse");
-var codeFrame    = require("./code-frame");
-var acorn        = require("acorn-6to5");
-
-module.exports = function (opts, code, callback) {
-  try {
-    var comments = [];
-    var tokens   = [];
-
-    var ast = acorn.parse(code, {
-      allowImportExportEverywhere: opts.allowImportExportEverywhere,
-      allowReturnOutsideFunction:  !opts._anal,
-      ecmaVersion:                 opts.experimental ? 7 : 6,
-      playground:                  opts.playground,
-      strictMode:                  opts.strictMode,
-      onComment:                   comments,
-      locations:                   true,
-      onToken:                     tokens,
-      ranges:                      true
-    });
-
-    estraverse.attachComments(ast, comments, tokens);
-
-    ast = normalizeAst(ast, comments, tokens);
-
-    if (callback) {
-      return callback(ast);
-    } else {
-      return ast;
-    }
-  } catch (err) {
-    if (!err._6to5) {
-      err._6to5 = true;
-      var message = opts.filename + ": " + err.message;
-
-      var loc = err.loc;
-      if (loc) {
-        var frame = codeFrame(code, loc.line, loc.column + 1);
-        message += frame;
-      }
-
-      if (err.stack) err.stack = err.stack.replace(err.message, message);
-      err.message = message;
-    }
-
-    throw err;
-  }
-};

lib/6to5/helpers/to-fast-properties.js

@@ -1,17 +0,0 @@
-"use strict";
-
-/**
- * A trick from Bluebird to force V8 to use fast properties for an object.
- * Read more: http://stackoverflow.com/questions/24987896/
- *
- * Use %HasFastProperties(obj) and --allow-natives-syntax to check whether
- * a particular object already has fast properties.
- */
-
-module.exports = function toFastProperties(obj) {
-  /*jshint -W027*/
-  function f() {}
-  f.prototype = obj;
-  return f;
-  eval(obj);
-};

lib/6to5/patch.js

@@ -1,67 +0,0 @@
-"use strict";
-
-var extend = require("lodash/object/extend");
-var t      = require("./types");
-
-require("./types/node");
-
-// estraverse
-
-var estraverse = require("estraverse");
-extend(estraverse.VisitorKeys, t.VISITOR_KEYS);
-
-// regenerator-6to5/ast-types
-
-var types = require("ast-types");
-var def   = types.Type.def;
-var or    = types.Type.or;
-
-def("File")
-  .bases("Node")
-  .build("program")
-  .field("program", def("Program"));
-
-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"));
-
-def("RestElement")
-  .bases("Pattern")
-  .build("argument")
-  .field("argument", def("expression"));
-
-// 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

@@ -1,9 +0,0 @@
-"use strict";
-
-if (global._6to5Polyfill) {
-  throw new Error("only one instance of 6to5/polyfill is allowed");
-}
-global._6to5Polyfill = true;
-
-require("core-js/shim");
-require("regenerator-6to5/runtime");

lib/6to5/transformation/file.js

@@ -1,471 +0,0 @@
-"use strict";
-
-module.exports = File;
-
-var SHEBANG_REGEX = /^\#\!.*/;
-
-var isFunction = require("lodash/lang/isFunction");
-var transform  = require("./index");
-var generate   = require("../generation");
-var defaults   = require("lodash/object/defaults");
-var contains   = require("lodash/collection/contains");
-var clone      = require("../helpers/clone");
-var parse      = require("../helpers/parse");
-var Scope      = require("../traversal/scope");
-var util       = require("../util");
-var path       = require("path");
-var each       = require("lodash/collection/each");
-var t          = require("../types");
-
-function File(opts) {
-  this.dynamicImportIds = {};
-  this.dynamicImported  = [];
-  this.dynamicImports   = [];
-
-  this.dynamicData      = {};
-  this.data             = {};
-
-  this.lastStatements   = [];
-  this.opts             = this.normalizeOptions(opts);
-  this.ast              = {};
-
-  this.buildTransformers();
-}
-
-File.helpers = [
-  "inherits",
-  "defaults",
-  "prototype-properties",
-  "apply-constructor",
-  "tagged-template-literal",
-  "tagged-template-literal-loose",
-  "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",
-  "set",
-  "class-call-check",
-  "object-destructuring-empty",
-  "temporal-undefined",
-  "temporal-assert-defined",
-  "tail-call"
-];
-
-File.validOptions = [
-  "filename",
-  "filenameRelative",
-  "blacklist",
-  "whitelist",
-  "loose",
-  "optional",
-  "modules",
-  "sourceMap",
-  "sourceMapName",
-  "sourceFileName",
-  "sourceRoot",
-  "moduleRoot",
-  "moduleIds",
-  "comments",
-  "reactCompat",
-  "keepModuleIdExtensions",
-  "code",
-  "ast",
-  "format",
-  "playground",
-  "experimental",
-  "resolveModuleSource",
-  "runtime",
-
-  // these are used by plugins
-  "ignore",
-  "only",
-  "extensions",
-  "accept"
-];
-
-File.prototype.normalizeOptions = function (opts) {
-  opts = clone(opts);
-
-  for (var key in opts) {
-    if (key[0] !== "_" && File.validOptions.indexOf(key) < 0) {
-      throw new ReferenceError("Unknown option: " + key);
-    }
-  }
-
-  defaults(opts, {
-    keepModuleIdExtensions: false,
-    resolveModuleSource:    null,
-    experimental:           false,
-    reactCompat:            false,
-    playground:             false,
-    whitespace:             true,
-    moduleIds:              false,
-    blacklist:              [],
-    whitelist:              [],
-    sourceMap:              false,
-    optional:               [],
-    comments:               true,
-    filename:               "unknown",
-    modules:                "common",
-    runtime:                false,
-    loose:                  [],
-    code:                   true,
-    ast:                    true
-  });
-
-  // normalize windows path separators to unix
-  opts.filename = opts.filename.replace(/\\/g, "/");
-
-  opts.basename = path.basename(opts.filename, path.extname(opts.filename));
-
-  opts.blacklist = util.arrayify(opts.blacklist);
-  opts.whitelist = util.arrayify(opts.whitelist);
-  opts.optional  = util.arrayify(opts.optional);
-  opts.loose     = util.arrayify(opts.loose);
-
-  if (contains(opts.loose, "all")) {
-    opts.loose = Object.keys(transform.transformers);
-  }
-
-  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.playground) {
-    opts.experimental = true;
-  }
-
-  if (opts.runtime) {
-    this.set("runtimeIdentifier", t.identifier("to5Runtime"));
-  }
-
-  opts.blacklist = transform._ensureTransformerNames("blacklist", opts.blacklist);
-  opts.whitelist = transform._ensureTransformerNames("whitelist", opts.whitelist);
-  opts.optional  = transform._ensureTransformerNames("optional", opts.optional);
-  opts.loose     = transform._ensureTransformerNames("loose", opts.loose);
-
-  if (opts.reactCompat) {
-    opts.optional.push("reactCompat");
-    console.error("The reactCompat option has been moved into the optional transformer " +
-                  "`reactCompat` - backwards compatibility will be removed in v4.0.0");
-  }
-
-  return opts;
-};
-
-File.prototype.isLoose = function (key) {
-  return contains(this.opts.loose, key);
-};
-
-File.prototype.buildTransformers = function () {
-  var file = this;
-
-  var transformers = {};
-
-  var secondaryStack = [];
-  var stack = [];
-
-  each(transform.transformers, function (transformer, key) {
-    var pass = transformers[key] = transformer.buildPass(file);
-
-    if (pass.canRun(file)) {
-      stack.push(pass);
-
-      if (transformer.secondPass) {
-        secondaryStack.push(pass);
-      }
-
-      if (transformer.manipulateOptions) {
-        transformer.manipulateOptions(file.opts, file);
-      }
-    }
-  });
-
-  this.transformerStack = stack.concat(secondaryStack);
-  this.transformers = transformers;
-};
-
-File.prototype.debug = function (msg) {
-  var parts = this.opts.filename;
-  if (msg) parts += ": " + msg;
-  util.debug(parts);
-};
-
-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.set = function (key, val) {
-  return this.data[key] = val;
-};
-
-File.prototype.setDynamic = function (key, fn) {
-  this.dynamicData[key] = fn;
-};
-
-File.prototype.get = function (key) {
-  var data = this.data[key];
-  if (data) {
-    return data;
-  } else {
-    var dynamic = this.dynamicData[key];
-    if (dynamic) {
-      return this.set(key, dynamic());
-    }
-  }
-};
-
-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.dynamicImported.push(declar);
-
-    this.moduleFormatter.importSpecifier(specifiers[0], declar, this.dynamicImports);
-  }
-
-  return id;
-};
-
-File.prototype.isConsequenceExpressionStatement = function (node) {
-  return t.isExpressionStatement(node) && this.lastStatements.indexOf(node) >= 0;
-};
-
-File.prototype.addHelper = function (name) {
-  if (!contains(File.helpers, name)) {
-    throw new ReferenceError("Unknown helper " + name);
-  }
-
-  var program = this.ast.program;
-
-  var declar = program._declarations && program._declarations[name];
-  if (declar) return declar.id;
-
-  var runtime = this.get("runtimeIdentifier");
-  if (runtime) {
-    name = t.identifier(t.toIdentifier(name));
-    return t.memberExpression(runtime, name);
-  } else {
-    var ref = util.template(name);
-    ref._compact = true;
-    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);
-
-  var opts = this.opts;
-
-  opts.allowImportExportEverywhere = this.isLoose("es6.modules");
-  //opts.strictMode = this.transformers.useStrict.canRun();
-
-  return parse(opts, code, function (tree) {
-    self.transform(tree);
-    return self.generate();
-  });
-};
-
-File.prototype.transform = function (ast) {
-  this.debug();
-
-  this.ast = ast;
-  this.lastStatements = t.getLastStatements(ast.program);
-  this.scope = new Scope(ast.program, ast, null, this);
-
-  var modFormatter = this.moduleFormatter = this.getModuleFormatter(this.opts.modules);
-  if (modFormatter.init && this.transformers["es6.modules"].canRun()) {
-    modFormatter.init();
-  }
-
-  this.checkNode(ast);
-
-  this.call("pre");
-
-  each(this.transformerStack, function (pass) {
-    pass.transform();
-  });
-
-  this.call("post");
-};
-
-File.prototype.call = function (key) {
-  var stack = this.transformerStack;
-  for (var i = 0; i < stack.length; i++) {
-    var transformer = stack[i].transformer;
-    if (transformer[key]) {
-      transformer[key](this);
-    }
-  }
-};
-
-var checkTransformerVisitor = {
-  enter: function (node, parent, scope, state) {
-    checkNode(state.stack, node, scope);
-  }
-};
-
-var checkNode = function (stack, node, scope) {
-  each(stack, function (pass) {
-    if (pass.shouldRun) return;
-    pass.checkNode(node, scope);
-  });
-};
-
-File.prototype.checkNode = function (node, scope) {
-  var stack = this.transformerStack;
-  scope = scope || this.scope;
-
-  checkNode(stack, node, scope);
-
-  scope.traverse(node, checkTransformerVisitor, {
-    stack: stack
-  });
-};
-
-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);
-    result.map = null;
-  }
-
-  return result;
-};
-
-File.prototype.generateUid = function (name, scope) {
-  name = t.toIdentifier(name).replace(/^_+/, "");
-
-  scope = scope || this.scope;
-
-  var uid;
-  var i = 0;
-  do {
-    uid = this._generateUid(name, i);
-    i++;
-  } while (scope.hasReference(uid));
-  return uid;
-};
-
-File.prototype.generateUidIdentifier = function (name, scope) {
-  scope = scope || this.scope;
-  var id = t.identifier(this.generateUid(name, scope));
-  scope.addDeclarationToFunctionScope("var", id);
-  return id;
-};
-
-File.prototype._generateUid = function (name, i) {
-  var id = name;
-  if (i > 1) id += i;
-  return "_" + id;
-};

lib/6to5/transformation/helpers/define-map.js

@@ -1,73 +0,0 @@
-var cloneDeep = require("lodash/lang/cloneDeep");
-var traverse  = require("../../traversal");
-var clone     = require("lodash/lang/clone");
-var each      = require("lodash/collection/each");
-var has       = require("lodash/object/has");
-var t         = require("../../types");
-
-exports.push = function (mutatorMap, key, kind, computed, value) {
-  var alias;
-
-  if (t.isIdentifier(key)) {
-    alias = key.name;
-    if (computed) alias = "computed:" + alias;
-  } else if (t.isLiteral(key)) {
-    alias = String(key.value);
-  } else {
-    alias = JSON.stringify(traverse.removeProperties(cloneDeep(key)));
-  }
-
-  var map;
-  if (has(mutatorMap, alias)) {
-    map = mutatorMap[alias];
-  } else {
-    map = {};
-  }
-  mutatorMap[alias] = map;
-
-  map._key = key;
-  if (computed) {
-    map._computed = true;
-  }
-
-  map[kind] = value;
-};
-
-exports.build = function (mutatorMap) {
-  var objExpr = t.objectExpression([]);
-
-  each(mutatorMap, function (map) {
-    var mapNode = t.objectExpression([]);
-
-    var propNode = t.property("init", map._key, mapNode, map._computed);
-
-    if (!map.get && !map.set) {
-      map.writable = t.literal(true);
-    }
-
-    if (map.enumerable === false) {
-      delete map.enumerable;
-    } else {
-      map.enumerable = t.literal(true);
-    }
-
-    map.configurable = t.literal(true);
-
-    each(map, function (node, key) {
-      if (key[0] === "_") return;
-
-      node = clone(node);
-      var inheritNode = node;
-      if (t.isMethodDefinition(node)) node = node.value;
-
-      var prop = t.property("init", t.identifier(key), node);
-      t.inheritsComments(prop, inheritNode);
-      t.removeComments(inheritNode);
-      mapNode.properties.push(prop);
-    });
-
-    objExpr.properties.push(propNode);
-  });
-
-  return objExpr;
-};

lib/6to5/transformation/helpers/name-method.js

@@ -1,53 +0,0 @@
-"use strict";
-
-var util = require("../../util");
-var t    = require("../../types");
-
-var visitor = {
-  enter: function (node, parent, scope, state) {
-    // check if this node is an identifier that matches the same as our function id
-    if (!t.isIdentifier(node, { name: state.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.getBinding(state.id);
-    if (localDeclar !== state.outerDeclar) return;
-
-    state.selfReference = true;
-    this.stop();
-  }
-};
-
-exports.property = function (node, file, scope) {
-  var key = t.toComputedKey(node, node.key);
-  if (!t.isLiteral(key)) return node; // we can't set a function id with this
-
-  var id = t.toIdentifier(key.value);
-  key = t.identifier(id);
-
-  var state = {
-    id: id,
-    selfReference: false,
-    outerDeclar: scope.getBinding(id),
-  };
-
-  scope.traverse(node, visitor, state);
-
-  var method = node.value;
-
-  if (state.selfReference) {
-    var templateName = "property-method-assignment-wrapper";
-    if (method.generator) templateName += "-generator";
-    node.value = util.template(templateName, {
-      FUNCTION: method,
-      FUNCTION_ID: key,
-      FUNCTION_KEY: scope.generateUidIdentifier(id),
-      WRAPPER_KEY: scope.generateUidIdentifier(id + "Wrapper")
-    });
-  } else {
-    method.id = key;
-  }
-};

lib/6to5/transformation/helpers/react.js

@@ -1,26 +0,0 @@
-var t = require("../../types");
-
-var isCreateClassCallExpression = t.buildMatchMemberExpression("React.createClass");
-
-exports.isCreateClass = function (node) {
-  if (!node || !t.isCallExpression(node)) return false;
-
-  // not React.createClass call member object
-  if (!isCreateClassCallExpression(node.callee)) return false;
-
-  // no call arguments
-  var args = node.arguments;
-  if (args.length !== 1) return false;
-
-  // first node arg is not an object
-  var first = args[0];
-  if (!t.isObjectExpression(first)) return false;
-
-  return true;
-};
-
-exports.isReactComponent = t.buildMatchMemberExpression("React.Component");
-
-exports.isCompatTag = function (tagName) {
-  return tagName && /^[a-z]|\-/.test(tagName);
-};

lib/6to5/transformation/helpers/remap-async-to-generator.js

@@ -1,40 +0,0 @@
-"use strict";
-
-var t = require("../../types");
-
-var visitor = {
-  enter: function (node) {
-    if (t.isFunction(node)) this.skip();
-
-    if (t.isAwaitExpression(node)) {
-      node.type = "YieldExpression";
-
-      if (node.all) {
-        // await* foo; -> yield Promise.all(foo);
-        node.all = false;
-        node.argument = t.callExpression(t.memberExpression(t.identifier("Promise"), t.identifier("all")), [node.argument]);
-      }
-    }
-  }
-};
-
-module.exports = function (node, callId, scope) {
-  node.async = false;
-  node.generator = true;
-
-  scope.traverse(node, visitor);
-
-  var call = t.callExpression(callId, [node]);
-  var id = node.id;
-  delete node.id;
-
-  if (t.isFunctionDeclaration(node)) {
-    var declar = t.variableDeclaration("let", [
-      t.variableDeclarator(id, call)
-    ]);
-    declar._blockHoist = true;
-    return declar;
-  } else {
-    return call;
-  }
-};

lib/6to5/transformation/helpers/replace-supers.js

@@ -1,302 +0,0 @@
-"use strict";
-
-module.exports = ReplaceSupers;
-
-var t = require("../../types");
-
-/**
- * Description
- *
- * @param {Object} opts
- * @param {Boolean} [inClass]
- */
-
-function ReplaceSupers(opts, inClass) {
-  this.topLevelThisReference = opts.topLevelThisReference;
-  this.methodNode            = opts.methodNode;
-  this.className             = opts.className;
-  this.superName             = opts.superName;
-  this.isStatic              = opts.isStatic;
-  this.hasSuper              = false;
-  this.inClass               = inClass;
-  this.isLoose               = opts.isLoose;
-  this.scope                 = opts.scope;
-  this.file                  = opts.file;
-}
-
-/**
- * Sets a super class value of the named property.
- *
- * @example
- *
- *   _set(Object.getPrototypeOf(CLASS.prototype), "METHOD", "VALUE", this)
- *
- * @param {Node} property
- * @param {Node} value
- * @param {Boolean} isComputed
- * @param {Node} thisExpression
- *
- * @returns {Node}
- */
-
-ReplaceSupers.prototype.setSuperProperty = function (property, value, isComputed, thisExpression) {
-  return t.callExpression(
-    this.file.addHelper("set"),
-    [
-      t.callExpression(
-        t.memberExpression(t.identifier("Object"), t.identifier("getPrototypeOf")),
-        [
-          this.isStatic ? this.className : t.memberExpression(this.className, t.identifier("prototype"))
-        ]
-      ),
-      isComputed ? property : t.literal(property.name),
-      value,
-      thisExpression
-    ]
-  );
-};
-
-/**
- * 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} isComputed
- * @param {Node} thisExpression
- *
- * @returns {Node}
- */
-
-ReplaceSupers.prototype.getSuperProperty = function (property, isComputed, thisExpression) {
-  return t.callExpression(
-    this.file.addHelper("get"),
-    [
-      t.callExpression(
-        t.memberExpression(t.identifier("Object"), t.identifier("getPrototypeOf")),
-        [
-          this.isStatic ? this.className : t.memberExpression(this.className, t.identifier("prototype"))
-        ]
-      ),
-      isComputed ? property : t.literal(property.name),
-      thisExpression
-    ]
-  );
-};
-
-/**
- * Description
- */
-
-ReplaceSupers.prototype.replace = function () {
-  this.traverseLevel(this.methodNode.value, true);
-};
-
-var visitor = {
-  enter: function (node, parent, scope, state) {
-    var topLevel = state.topLevel;
-    var self = state.self;
-
-    if (t.isFunction(node) && !t.isArrowFunctionExpression(node)) {
-      // we need to call traverseLevel again so we're context aware
-      self.traverseLevel(node, false);
-      return this.skip();
-    }
-
-    if (t.isProperty(node, { method: true }) || t.isMethodDefinition(node)) {
-      // break on object methods
-      return this.skip();
-    }
-
-    var getThisReference = topLevel ?
-      // top level so `this` is the instance
-      t.thisExpression :
-      // not in the top level so we need to create a reference
-      self.getThisReference.bind(self);
-
-    var callback = self.specHandle;
-    if (self.isLoose) callback = self.looseHandle;
-    return callback.call(self, getThisReference, node, parent);
-  }
-};
-
-/**
- * Description
- *
- * @param {Object} node
- * @param {Boolean} topLevel
- */
-
-ReplaceSupers.prototype.traverseLevel = function (node, topLevel) {
-  var state = { self: this, topLevel: topLevel };
-  this.scope.traverse(node, visitor, state);
-};
-
-/**
- * Description
- */
-
-ReplaceSupers.prototype.getThisReference = function () {
-  if (this.topLevelThisReference) {
-    return this.topLevelThisReference;
-  } else {
-    var ref = this.topLevelThisReference = this.file.generateUidIdentifier("this");
-    this.methodNode.value.body.body.unshift(t.variableDeclaration("var", [
-      t.variableDeclarator(this.topLevelThisReference, t.thisExpression())
-    ]));
-    return ref;
-  }
-};
-
-/**
- * Description
- *
- * @param {Object} node
- * @param {Object} id
- * @param {Object} parent
- * @returns {Object}
- */
-
-ReplaceSupers.prototype.getLooseSuperProperty = function (id, parent) {
-  var methodNode = this.methodNode;
-  var methodName = methodNode.key;
-  var superName  = this.superName || t.identifier("Function");
-
-  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(superName, t.identifier("call"));
-    } else {
-      id = superName;
-
-      // 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(superName, t.identifier("prototype"));
-  } else {
-    return superName;
-  }
-};
-
-/**
- * Description
- *
- * @param {Function} getThisReference
- * @param {Object} node
- * @param {Object} parent
- */
-
-ReplaceSupers.prototype.looseHandle = function (getThisReference, node, parent) {
-  if (t.isIdentifier(node, { name: "super" })) {
-    this.hasSuper = true;
-    return this.getLooseSuperProperty(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);
-    this.hasSuper = true;
-    t.appendToMemberExpression(callee, t.identifier("call"));
-    node.arguments.unshift(getThisReference());
-  }
-};
-
-/**
- * Description
- *
- * @param {Function} getThisReference
- * @param {Object} node
- * @param {Object} parent
- */
-
-ReplaceSupers.prototype.specHandle = function (getThisReference, node, parent) {
-  var methodNode = this.methodNode;
-  var property;
-  var computed;
-  var args;
-  var thisReference;
-
-  if (isIllegalBareSuper(node, parent)) {
-    throw this.file.errorWithNode(node, "Illegal use of bare super");
-  }
-
-  if (t.isCallExpression(node)) {
-    var callee = node.callee;
-    if (isSuper(callee, node)) {
-      // super(); -> _get(Object.getPrototypeOf(ClassName), "MethodName", this).call(this);
-      property = methodNode.key;
-      computed = methodNode.computed;
-      args = node.arguments;
-
-      // bare `super` call is illegal inside non-constructors
-      //  - https://esdiscuss.org/topic/super-call-in-methods
-      //  - https://twitter.com/wycats/status/544553184396836864
-      if (methodNode.key.name !== "constructor" || !this.inClass) {
-        var methodName = methodNode.key.name || "METHOD_NAME";
-        throw this.file.errorWithNode(node, "Direct super call is illegal in non-constructor, use super." + methodName + "() instead");
-      }
-    } else if (t.isMemberExpression(callee) && isSuper(callee.object, callee)) {
-      // 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) && isSuper(node.object, node)) {
-    // super.name; -> _get(Object.getPrototypeOf(ClassName.prototype), "name", this);
-    property = node.property;
-    computed = node.computed;
-  } else if (t.isAssignmentExpression(node) && isSuper(node.left.object, node.left) && methodNode.kind === "set") {
-    // super.name = "val"; -> _set(Object.getPrototypeOf(ClassName.prototype), "name", this);
-    this.hasSuper = true;
-    return this.setSuperProperty(node.left.property, node.right, node.left.computed, getThisReference());
-  }
-
-  if (!property) return;
-
-  this.hasSuper = true;
-
-  thisReference = getThisReference();
-  var superProperty = this.getSuperProperty(property, computed, thisReference);
-  if (args) {
-    if (args.length === 1 && t.isSpreadElement(args[0])) {
-      // super(...arguments);
-      return t.callExpression(
-        t.memberExpression(superProperty, t.identifier("apply")),
-        [thisReference, args[0].argument]
-      );
-    } else {
-      return t.callExpression(
-        t.memberExpression(superProperty, t.identifier("call")),
-        [thisReference].concat(args)
-      );
-    }
-  } else {
-    return superProperty;
-  }
-};
-
-var isIllegalBareSuper = function (node, parent) {
-  if (!isSuper(node, parent)) return false;
-  if (t.isMemberExpression(parent, { computed: false })) return false;
-  if (t.isCallExpression(parent, { callee: node })) return false;
-  return true;
-};
-
-var isSuper = function (node, parent) {
-  return t.isIdentifier(node, { name: "super" }) && t.isReferenced(node, parent);
-};

lib/6to5/transformation/helpers/use-strict.js

@@ -1,21 +0,0 @@
-"use strict";
-
-var t = require("../../types");
-
-exports.has = function (node) {
-  var first = node.body[0];
-  return t.isExpressionStatement(first) && t.isLiteral(first.expression, { value: "use strict" });
-};
-
-exports.wrap = function (node, callback) {
-  var useStrictNode;
-  if (exports.has(node)) {
-    useStrictNode = node.body.shift();
-  }
-
-  callback();
-
-  if (useStrictNode) {
-    node.body.unshift(useStrictNode);
-  }
-};

lib/6to5/transformation/index.js

@@ -1,73 +0,0 @@
-"use strict";
-
-module.exports = transform;
-
-var normalizeAst = require("../helpers/normalize-ast");
-var Transformer  = require("./transformer");
-var object       = require("../helpers/object");
-var File         = require("./file");
-var each         = require("lodash/collection/each");
-
-function transform(code, opts) {
-  var file = new File(opts);
-  return file.parse(code);
-}
-
-transform.fromAst = function (ast, code, opts) {
-  ast = normalizeAst(ast);
-
-  var file = new File(opts);
-  file.addCode(code);
-  file.transform(ast);
-  return file.generate();
-};
-
-transform._ensureTransformerNames = function (type, rawKeys) {
-  var keys = [];
-
-  for (var i = 0; i < rawKeys.length; i++) {
-    var key = rawKeys[i];
-
-    var deprecatedKey = transform.deprecatedTransformerMap[key];
-    if (deprecatedKey) {
-      // deprecated key, remap it to the new one
-      console.error(
-        "The transformer " + key + " has been renamed to " + deprecatedKey +
-        " in v3.0.0 - backwards compatibilty will be removed 4.0.0"
-      );
-      rawKeys.push(deprecatedKey);
-    } else if (transform.transformers[key]) {
-      // valid key
-      keys.push(key);
-    } else if (transform.namespaces[key]) {
-      // namespace, append all transformers within this namespace
-      keys = keys.concat(transform.namespaces[key]);
-    } else {
-      // invalid key
-      throw new ReferenceError(
-        "Unknown transformer " + key + " specified in " + type + " - " +
-        "transformer key names have been changed in 3.0.0 see " +
-        "the changelog for more info " +
-        "https://github.com/6to5/6to5/blob/master/CHANGELOG.md#300"
-      );
-    }
-  }
-
-  return keys;
-};
-
-transform.transformers = object();
-transform.namespaces   = object();
-
-transform.deprecatedTransformerMap = require("./transformers/deprecated");
-transform.moduleFormatters = require("./modules");
-
-var rawTransformers = require("./transformers");
-
-each(rawTransformers, function (transformer, key) {
-  var namespace = key.split(".")[0];
-  transform.namespaces[namespace] = transform.namespaces[namespace] || [];
-  transform.namespaces[namespace].push(key);
-
-  transform.transformers[key] = new Transformer(key, transformer);
-});

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

@@ -1,301 +0,0 @@
-"use strict";
-
-module.exports = DefaultFormatter;
-
-var object   = require("../../helpers/object");
-var util     = require("../../util");
-var t        = require("../../types");
-var extend   = require("lodash/object/extend");
-
-function DefaultFormatter(file) {
-  this.file = file;
-  this.ids  = object();
-
-  this.hasNonDefaultExports = false;
-
-  this.hasLocalExports = false;
-  this.hasLocalImports = false;
-
-  this.localImportOccurences = object();
-  this.localExports = object();
-  this.localImports = object();
-
-  this.getLocalExports();
-  this.getLocalImports();
-
-  this.remapAssignments();
-}
-
-DefaultFormatter.prototype.doDefaultExportInterop = function (node) {
-  return node.default && !this.noInteropRequireExport && !this.hasNonDefaultExports;
-};
-
-DefaultFormatter.prototype.bumpImportOccurences = function (node) {
-  var source = node.source.value;
-  var occurs = this.localImportOccurences;
-  occurs[source] = occurs[source] || 0;
-  occurs[source] += node.specifiers.length;
-};
-
-var exportsVisitor = {
-  enter: function (node, parent, scope, formatter) {
-    var declar = node && node.declaration;
-    if (t.isExportDeclaration(node)) {
-      formatter.hasLocalImports = true;
-
-      if (declar && t.isStatement(declar)) {
-        extend(formatter.localExports, t.getBindingIdentifiers(declar));
-      }
-
-      if (!node.default) {
-        formatter.hasNonDefaultExports = true;
-      }
-
-      if (node.source) {
-        formatter.bumpImportOccurences(node);
-      }
-    }
-  }
-};
-
-DefaultFormatter.prototype.getLocalExports = function () {
-  this.file.scope.traverse(this.file.ast, exportsVisitor, this);
-};
-
-var importsVisitor = {
-  enter: function (node, parent, scope, formatter) {
-    if (t.isImportDeclaration(node)) {
-      formatter.hasLocalImports = true;
-      extend(formatter.localImports, t.getBindingIdentifiers(node));
-      formatter.bumpImportOccurences(node);
-    }
-  }
-};
-
-DefaultFormatter.prototype.getLocalImports = function () {
-  this.file.scope.traverse(this.file.ast, importsVisitor, this);
-};
-
-var remapVisitor = {
-  enter: function (node, parent, scope, formatter) {
-    if (t.isUpdateExpression(node) && formatter.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 = formatter.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) && formatter.isLocalReference(node.left, scope)) {
-      this.skip();
-      return formatter.remapExportAssignment(node);
-    }
-  }
-};
-
-DefaultFormatter.prototype.remapAssignments = function () {
-  if (this.hasLocalImports) {
-    this.file.scope.traverse(this.file.ast, remapVisitor, this);
-  }
-};
-
-DefaultFormatter.prototype.isLocalReference = function (node) {
-  var localImports = this.localImports;
-  return t.isIdentifier(node) && localImports[node.name] && localImports[node.name] !== node;
-};
-
-DefaultFormatter.prototype.checkLocalReference = function (node) {
-  var file = this.file;
-  if (this.isLocalReference(node)) {
-    throw file.errorWithNode(node, "Illegal assignment of module import");
-  }
-};
-
-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.isLocalReference = function (node, scope) {
-  var localExports = this.localExports;
-  var name = node.name;
-  return t.isIdentifier(node) && localExports[name] && localExports[name] === scope.getBinding(name);
-};
-
-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(/\.(\w*?)$/, "");
-  }
-
-  moduleName += filenameRelative;
-
-  // normalize 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.getExternalReference = function (node, nodes) {
-  var ids = this.ids;
-  var id = node.source.value;
-
-  if (ids[id]) {
-    return ids[id];
-  } else {
-    return this.ids[id] = this._getExternalReference(node, nodes);
-  }
-};
-
-DefaultFormatter.prototype.checkExportIdentifier = function (node) {
-  if (t.isIdentifier(node, { name: "__esModule" })) {
-    throw this.file.errorWithNode(node, "Illegal export __esModule - this is used internally for CommonJS interop");
-  }
-};
-
-DefaultFormatter.prototype.exportSpecifier = function (specifier, node, nodes) {
-  var inherits = false;
-  if (node.specifiers.length === 1) inherits = node;
-
-  if (node.source) {
-    var ref = this.getExternalReference(node, nodes);
-
-    if (t.isExportBatchSpecifier(specifier)) {
-      // export * from "foo";
-      nodes.push(this.buildExportsWildcard(ref, node));
-    } else {
-      if (t.isSpecifierDefault(specifier) && !this.noInteropRequireExport) {
-        // importing a default so we need to normalize it
-        ref = t.callExpression(this.file.addHelper("interop-require"), [ref]);
-      } else {
-        ref = t.memberExpression(ref, t.getSpecifierId(specifier));
-      }
-
-      // export { foo } from "test";
-      nodes.push(this.buildExportsAssignment(
-        t.getSpecifierName(specifier),
-        ref,
-        node
-      ));
-    }
-  } else {
-    // export { foo };
-    nodes.push(this.buildExportsAssignment(t.getSpecifierName(specifier), specifier.id, node));
-  }
-};
-
-DefaultFormatter.prototype.buildExportsWildcard = 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.buildExportsAssignment = function (id, init) {
-  this.checkExportIdentifier(id);
-  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 = 0; i < declar.declarations.length; i++) {
-      var decl = declar.declarations[i];
-
-      decl.init = this.buildExportsAssignment(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.buildExportsAssignment(id, ref, node);
-
-    nodes.push(assign);
-
-    this._hoistExport(declar, assign);
-  }
-};

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

@@ -1,3 +0,0 @@
-"use strict";
-
-module.exports = require("./_strict")(require("./amd"));

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

@@ -1,108 +0,0 @@
-"use strict";
-
-module.exports = AMDFormatter;
-
-var DefaultFormatter = require("./_default");
-var CommonFormatter  = require("./common");
-var util             = require("../../util");
-var t                = require("../../types");
-var contains         = require("lodash/collection/contains");
-var values           = require("lodash/object/values");
-
-function AMDFormatter() {
-  CommonFormatter.apply(this, arguments);
-}
-
-util.inherits(AMDFormatter, DefaultFormatter);
-
-AMDFormatter.prototype.init = CommonFormatter.prototype.init;
-
-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 (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._getExternalReference = function (node) {
-  return this.file.generateUidIdentifier(node.source.value);
-};
-
-AMDFormatter.prototype.importDeclaration = function (node) {
-  this.getExternalReference(node);
-};
-
-AMDFormatter.prototype.importSpecifier = function (specifier, node, nodes) {
-  var key = t.getSpecifierName(specifier);
-  var ref = this.getExternalReference(node);
-
-  if (contains(this.file.dynamicImported, node)) {
-    // Prevent unnecessary renaming of dynamic imports.
-    this.ids[node.source.value] = ref;
-  } else if (t.isImportBatchSpecifier(specifier)) {
-    // import * as bar from "foo";
-  } else if (t.isSpecifierDefault(specifier) && !this.noInteropRequireImport) {
-    // import foo from "foo";
-    ref = t.callExpression(this.file.addHelper("interop-require"), [ref]);
-  } else {
-    // import {foo} from "foo";
-    ref = t.memberExpression(ref, t.getSpecifierId(specifier), false);
-  }
-
-  nodes.push(t.variableDeclaration("var", [
-    t.variableDeclarator(key, ref)
-  ]));
-};
-
-AMDFormatter.prototype.exportDeclaration = function (node) {
-  if (this.doDefaultExportInterop(node)) {
-    this.passModuleArg = true;
-  }
-
-  CommonFormatter.prototype.exportDeclaration.apply(this, arguments);
-};

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

@@ -1,13 +0,0 @@
-"use strict";
-
-module.exports = CommonStandardFormatter;
-
-var CommonStrictFormatter = require("./common-strict");
-var util = require("../../util");
-
-function CommonStandardFormatter() {
-  this.noInteropRequireImport = true;
-  CommonStrictFormatter.apply(this, arguments);
-}
-
-util.inherits(CommonStandardFormatter, CommonStrictFormatter);

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

@@ -1,3 +0,0 @@
-"use strict";
-
-module.exports = require("./_strict")(require("./common"));

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

@@ -1,99 +0,0 @@
-"use strict";
-
-module.exports = CommonJSFormatter;
-
-var DefaultFormatter = require("./_default");
-var contains         = require("lodash/collection/contains");
-var util             = require("../../util");
-var t                = require("../../types");
-
-function CommonJSFormatter() {
-  DefaultFormatter.apply(this, arguments);
-}
-
-util.inherits(CommonJSFormatter, DefaultFormatter);
-
-CommonJSFormatter.prototype.init = function () {
-  if (!this.noInteropRequireImport && this.hasNonDefaultExports) {
-    this.file.ast.program.body.push(util.template("exports-module-declaration", true));
-  }
-};
-
-CommonJSFormatter.prototype.importSpecifier = function (specifier, node, nodes) {
-  var variableName = t.getSpecifierName(specifier);
-
-  var ref = this.getExternalReference(node, nodes);
-
-  // import foo from "foo";
-  if (t.isSpecifierDefault(specifier)) {
-    if (!contains(this.file.dynamicImported, node)) {
-      if (this.noInteropRequireImport) {
-        ref = t.memberExpression(ref, t.identifier("default"));
-      } else {
-        ref = t.callExpression(this.file.addHelper("interop-require"), [ref]);
-      }
-    }
-    nodes.push(t.variableDeclaration("var", [t.variableDeclarator(variableName, ref)]));
-  } else {
-    if (specifier.type === "ImportBatchSpecifier") {
-
-      if (!this.noInteropRequireImport) {
-        ref = t.callExpression(this.file.addHelper("interop-require-wildcard"), [ref]);
-      }
-
-      // import * as bar from "foo";
-      nodes.push(t.variableDeclaration("var", [
-        t.variableDeclarator(variableName, ref)
-      ]));
-    } else {
-      // import { foo } from "foo";
-      nodes.push(t.variableDeclaration("var", [
-        t.variableDeclarator(
-          variableName,
-          t.memberExpression(ref, t.getSpecifierId(specifier))
-        )
-      ]));
-    }
-  }
-};
-
-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 (this.doDefaultExportInterop(node)) {
-    var declar = node.declaration;
-    var assign = util.template("exports-default-assign", {
-      VALUE: this._pushStatement(declar, nodes)
-    }, true);
-
-    if (t.isFunctionDeclaration(declar)) {
-      // we can hoist this assignment to the top of the file
-      assign._blockHoist = 3;
-    }
-
-    nodes.push(assign);
-    return;
-  }
-
-  DefaultFormatter.prototype.exportDeclaration.apply(this, arguments);
-};
-
-CommonJSFormatter.prototype._getExternalReference = function (node, nodes) {
-  var source = node.source.value;
-  var call = t.callExpression(t.identifier("require"), [node.source]);
-
-  if (this.localImportOccurences[source] > 1) {
-    var uid = this.file.generateUidIdentifier(source);
-    nodes.push(t.variableDeclaration("var", [
-      t.variableDeclarator(uid, call)
-    ]));
-    return uid;
-  } else {
-    return call;
-  }
-};

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

@@ -1,20 +0,0 @@
-"use strict";
-
-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/index.js

@@ -1,11 +0,0 @@
-module.exports = {
-  commonStandard: require("./common-standard"),
-  commonStrict:   require("./common-strict"),
-  amdStrict:      require("./amd-strict"),
-  umdStrict:      require("./umd-strict"),
-  common:         require("./common"),
-  system:         require("./system"),
-  ignore:         require("./ignore"),
-  amd:            require("./amd"),
-  umd:            require("./umd")
-};

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

@@ -1,201 +0,0 @@
-"use strict";
-
-module.exports = SystemFormatter;
-
-var DefaultFormatter = require("./_default");
-var AMDFormatter     = require("./amd");
-var useStrict        = require("../helpers/use-strict");
-var util             = require("../../util");
-var t                = require("../../types");
-var last             = require("lodash/array/last");
-var each             = require("lodash/collection/each");
-var map              = require("lodash/collection/map");
-
-function SystemFormatter(file) {
-  this.exportIdentifier = file.generateUidIdentifier("export");
-  this.noInteropRequireExport = true;
-  this.noInteropRequireImport = true;
-
-  DefaultFormatter.apply(this, arguments);
-}
-
-util.inherits(SystemFormatter, AMDFormatter);
-
-SystemFormatter.prototype.init = function () {};
-
-SystemFormatter.prototype._addImportSource = function (node, exportNode) {
-  node._importSource = exportNode.source && exportNode.source.value;
-  return node;
-};
-
-SystemFormatter.prototype.buildExportsWildcard = 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.buildExportsAssignment = 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);
-};
-
-var runnerSettersVisitor = {
-  enter: function (node, parent, scope, state) {
-    if (node._importSource === state.source) {
-      if (t.isVariableDeclaration(node)) {
-        each(node.declarations, function (declar) {
-          state.hoistDeclarators.push(t.variableDeclarator(declar.id));
-          state.nodes.push(t.expressionStatement(
-            t.assignmentExpression("=", declar.id, declar.init)
-          ));
-        });
-      } else {
-        state.nodes.push(node);
-      }
-
-      this.remove();
-    }
-  }
-};
-
-SystemFormatter.prototype.buildRunnerSetters = function (block, hoistDeclarators) {
-  var scope = this.file.scope;
-
-  return t.arrayExpression(map(this.ids, function (uid, source) {
-    var state = {
-      source:           source,
-      nodes:            [],
-      hoistDeclarators: hoistDeclarators
-    };
-
-    scope.traverse(block, runnerSettersVisitor, state);
-
-    return t.functionExpression(null, [uid], t.blockStatement(state.nodes));
-  }));
-};
-
-var hoistVariablesVisitor = {
-  enter: function (node, parent, scope, hoistDeclarators) {
-    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;
-      }
-
-      // ignore block hoisted nodes as these can be left in
-      if (node._blockHoist) return;
-
-      var nodes = [];
-
-      for (var i = 0; i < node.declarations.length; i++) {
-        var declar = node.declarations[i];
-        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;
-    }
-  }
-};
-
-var hoistFunctionsVisitor = {
-  enter: function (node, parent, scope, handlerBody) {
-    if (t.isFunction(node)) this.skip();
-
-    if (t.isFunctionDeclaration(node) || node._blockHoist) {
-      handlerBody.push(node);
-      this.remove();
-    }
-  }
-};
-
-SystemFormatter.prototype.transform = function (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
-  this.file.scope.traverse(block, hoistVariablesVisitor, hoistDeclarators);
-
-  if (hoistDeclarators.length) {
-    var hoistDeclar = t.variableDeclaration("var", hoistDeclarators);
-    hoistDeclar._blockHoist = true;
-    handlerBody.unshift(hoistDeclar);
-  }
-
-  // hoist up function declarations for circular references
-  this.file.scope.traverse(block, hoistFunctionsVisitor, handlerBody);
-
-  handlerBody.push(returnStatement);
-
-  if (useStrict.has(block)) {
-    handlerBody.unshift(block.body.shift());
-  }
-
-  program.body = [runner];
-};

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

@@ -1,3 +0,0 @@
-"use strict";
-
-module.exports = require("./_strict")(require("./umd"));

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

@@ -1,73 +0,0 @@
-"use strict";
-
-module.exports = UMDFormatter;
-
-var AMDFormatter = require("./amd");
-var util         = require("../../util");
-var t            = require("../../types");
-var values       = require("lodash/object/values");
-
-function UMDFormatter() {
-  AMDFormatter.apply(this, arguments);
-}
-
-util.inherits(UMDFormatter, AMDFormatter);
-
-UMDFormatter.prototype.transform = function (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/corejs-iterator.js

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

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/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/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 LEN = ARGUMENTS.length, ARRAY = Array(ARRAY_LEN), KEY = START; KEY < LEN; KEY++) {
-  ARRAY[ARRAY_KEY] = ARGUMENTS[KEY];
-}

lib/6to5/transformation/templates/tail-call-body.js

@@ -1,13 +0,0 @@
-{
-  var ARGUMENTS_ID = arguments,
-      THIS_ID = this,
-      SHOULD_CONTINUE_ID,
-      RESULT_ID;
-
-  do {
-    SHOULD_CONTINUE_ID = false;
-    RESULT_ID = FUNCTION.apply(THIS_ID, ARGUMENTS_ID);
-  } while(SHOULD_CONTINUE_ID);
-
-  return RESULT_ID;
-}

lib/6to5/transformation/templates/tail-call.js

@@ -1,23 +0,0 @@
-(function () {
-  function Tail(func, args, context) {
-    this.func = func;
-    this.args = args;
-    this.context = context;
-  }
-
-  Tail.prototype._isTailDescriptor = true;
-
-  var isRunning = false;
-
-  return function (func, args, context) {
-    var result = new Tail(func, args, context);
-    if (!isRunning) {
-      isRunning = true;
-      do {
-        result = result.func.apply(result.context, result.args);
-      } while (result instanceof Tail || (result && result._isTailDescriptor));
-      isRunning = false;
-    }
-    return result;
-  };
-})()

lib/6to5/transformation/transformer-pass.js

@@ -1,63 +0,0 @@
-module.exports = TransformerPass;
-
-var contains = require("lodash/collection/contains");
-
-/**
- * This class is responsible for traversing over the provided `File`s
- * AST and running it's parent transformers handlers over it.
- */
-
-function TransformerPass(file, transformer) {
-  this.transformer = transformer;
-  this.shouldRun   = !transformer.check;
-  this.handlers    = transformer.handlers;
-  this.file        = file;
-}
-
-TransformerPass.prototype.canRun = function () {
-  var transformer = this.transformer;
-
-  var opts = this.file.opts;
-  var key  = transformer.key;
-
-  // internal
-  if (key[0] === "_") return true;
-
-  // blacklist
-  var blacklist = opts.blacklist;
-  if (blacklist.length && contains(blacklist, key)) return false;
-
-  // whitelist
-  var whitelist = opts.whitelist;
-  if (whitelist.length) return contains(whitelist, key);
-
-  // optional
-  if (transformer.optional && !contains(opts.optional, key)) return false;
-
-  // experimental
-  if (transformer.experimental && !opts.experimental) return false;
-
-  // playground
-  if (transformer.playground && !opts.playground) return false;
-
-  return true;
-};
-
-TransformerPass.prototype.checkNode = function (node) {
-  var check = this.transformer.check;
-  if (check) {
-    return this.shouldRun = check(node);
-  } else {
-    return true;
-  }
-};
-
-TransformerPass.prototype.transform = function () {
-  if (!this.shouldRun) return;
-
-  var file = this.file;
-
-  file.debug("Running transformer " + this.transformer.key);
-
-  file.scope.traverse(file.ast, this.handlers, file);
-};

lib/6to5/transformation/transformer.js

@@ -1,73 +0,0 @@
-"use strict";
-
-module.exports = Transformer;
-
-var TransformerPass = require("./transformer-pass");
-var isFunction      = require("lodash/lang/isFunction");
-var traverse        = require("../traversal");
-var isObject        = require("lodash/lang/isObject");
-var clone           = require("../helpers/clone");
-var each            = require("lodash/collection/each");
-
-/**
- * This is the class responsible for normalising a transformers handlers
- * as well as constructing a `TransformerPass` that is repsonsible for
- * actually running the transformer over the provided `File`.
- */
-
-function Transformer(key, transformer, opts) {
-  transformer = clone(transformer);
-
-  var take = function (key) {
-    var val = transformer[key];
-    delete transformer[key];
-    return val;
-  };
-
-  this.manipulateOptions = take("manipulateOptions");
-  this.check             = take("check");
-  this.post              = take("post");
-  this.pre               = take("pre");
-
-  this.experimental = !!take("experimental");
-  this.playground   = !!take("playground");
-  this.secondPass   = !!take("secondPass");
-  this.optional     = !!take("optional");
-
-  this.handlers = this.normalize(transformer);
-  this.opts     = opts || {};
-  this.key      = key;
-}
-
-Transformer.prototype.normalize = function (transformer) {
-  var self = this;
-
-  if (isFunction(transformer)) {
-    transformer = { ast: transformer };
-  }
-
-  traverse.explode(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;
-
-    if (!fns.enter) fns.enter = function () { };
-    if (!fns.exit) fns.exit = function () { };
-
-    transformer[type] = fns;
-  });
-
-  return transformer;
-};
-
-Transformer.prototype.buildPass = function (file) {
-  return new TransformerPass(file, this);
-};

lib/6to5/transformation/transformers/deprecated.json

@@ -1,41 +0,0 @@
-{
-  "specNoForInOfAssignment": "validation.noForInOfAssignment",
-  "specSetters": "validation.setters",
-  "specBlockScopedFunctions": "spec.blockScopedFunctions",
-  "malletOperator": "playground.malletOperator",
-  "methodBinding": "playground.methodBinding",
-  "memoizationOperator": "playground.memoizationOperator",
-  "objectGetterMemoization": "playground.objectGetterMemoization",
-  "modules": "es6.modules",
-  "propertyNameShorthand": "es6.properties.shorthand",
-  "arrayComprehension": "es7.comprehensions",
-  "generatorComprehension": "es7.comprehensions",
-  "arrowFunctions": "es6.arrowFunctions",
-  "classes": "es6.classes",
-  "objectSpread": "es7.objectRestSpread",
-  "es7.objectSpread": "es7.objectRestSpread",
-  "exponentiationOperator": "es7.exponentiationOperator",
-  "spread": "es6.spread",
-  "templateLiterals": "es6.templateLiterals",
-  "propertyMethodAssignment": "es6.properties.shorthand",
-  "computedPropertyNames": "es6.properties.computed",
-  "defaultParameters": "es6.parameters.default",
-  "restParameters": "es6.parameters.rest",
-  "destructuring": "es6.destructuring",
-  "forOf": "es6.forOf",
-  "unicodeRegex": "es6.unicodeRegex",
-  "abstractReferences": "es7.abstractReferences",
-  "constants": "es6.constants",
-  "letScoping": "es6.letScoping",
-  "blockScopingTDZ": "es6.blockScopingTDZ",
-  "generators": "regenerator",
-  "protoToAssign": "spec.protoToAssign",
-  "typeofSymbol": "spec.typeofSymbol",
-  "coreAliasing": "selfContained",
-  "undefinedToVoid": "spec.undefinedToVoid",
-  "undeclaredVariableCheck": "validation.undeclaredVariableCheck",
-  "specPropertyLiterals": "es3.propertyLiterals",
-  "specMemberExpressionLiterals": "es3.memberExpressionLiterals",
-  "minification.propertyLiterals": "es3.propertyLiterals",
-  "minification.memberExpressionLiterals": "es3.memberExpressionLiterals"
-}

lib/6to5/transformation/transformers/es3/member-expression-literals.js

@@ -1,16 +0,0 @@
-"use strict";
-
-var t = require("../../../types");
-
-exports.MemberExpression = function (node) {
-  var prop = node.property;
-  if (node.computed && t.isLiteral(prop) && t.isValidIdentifier(prop.value)) {
-    // foo["bar"] => foo.bar
-    node.property = t.identifier(prop.value);
-    node.computed = false;
-  } else if (!node.computed && t.isIdentifier(prop) && !t.isValidIdentifier(prop.name)) {
-    // foo.default -> foo["default"]
-    node.property = t.literal(prop.name);
-    node.computed = true;
-  }
-};

lib/6to5/transformation/transformers/es3/property-literals.js

@@ -1,15 +0,0 @@
-"use strict";
-
-var t = require("../../../types");
-
-exports.Property = function (node) {
-  var key = node.key;
-  if (t.isLiteral(key) && t.isValidIdentifier(key.value)) {
-    // "foo": "bar" -> foo: "bar"
-    node.key = t.identifier(key.value);
-    node.computed = false;
-  } else if (!node.computed && t.isIdentifier(key) && !t.isValidIdentifier(key.name)) {
-    // default: "bar" -> "default": "bar"
-    node.key = t.literal(key.name);
-  }
-};

lib/6to5/transformation/transformers/es5/properties.mutators.js

@@ -1,30 +0,0 @@
-"use strict";
-
-var defineMap = require("../../helpers/define-map");
-var t         = require("../../../types");
-
-exports.check = function (node) {
-  return t.isProperty(node) && (node.kind === "get" || node.kind === "set");
-};
-
-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;
-      defineMap.push(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, defineMap.build(mutatorMap)]
-  );
-};

lib/6to5/transformation/transformers/es6/.tail-call.js

@@ -1,116 +0,0 @@
-"use strict";
-
-var t = require("../../../types");
-
-function transformExpression(node, scope, state) {
-  if (!node) return;
-
-  return (function subTransform(node) {
-    switch (node.type) {
-      case "ConditionalExpression":
-        // any value of ternary operator can be final one
-        subTransform(node.consequent);
-        subTransform(node.alternate);
-        break;
-
-      case "LogicalExpression":
-        // only right expression can be final and so optimized
-        subTransform(node.right);
-        break;
-
-      case "SequenceExpression":
-        // only last element of sequence can be optimized
-        var seq = node.expressions;
-        subTransform(seq[seq.length - 1]);
-        break;
-
-      case "CallExpression":
-        var callee = node.callee, thisBinding;
-        var args = [callee];
-
-        // bind `this` to object in member expressions
-        if (t.isMemberExpression(callee)) {
-          var object = state.wrapSideEffect(callee.object);
-          callee.object = object.expr;
-          thisBinding = object.ref;
-        }
-
-        if (node.arguments.length > 0 || thisBinding) {
-          args.push(t.arrayExpression(node.arguments));
-        }
-
-        if (thisBinding) {
-          args.push(thisBinding);
-        }
-
-        node.callee = state.getHelperRef();
-        node.arguments = args;
-        break;
-    }
-  })(node);
-}
-
-var functionChildrenVisitor = {
-  enter: function (node, parent, scope, state) {
-    if (t.isReturnStatement(node)) {
-      // prevent entrance by current visitor
-      this.skip();
-      // transform return argument into statement if
-      // it contains tail recursion
-      transformExpression(node.argument, scope, state);
-    } else if (t.isFunction(node)) {
-      // inner function's bodies are irrelevant
-      this.skip();
-    } else if (t.isTryStatement(parent)) {
-      if (node === parent.block) {
-        // `try`-blocks can't be optimized
-        this.skip();
-      } else if (parent.finalizer && node !== parent.finalizer) {
-        // `catch` clause followed by `finally` can't be optimized
-        this.skip();
-      }
-    }
-  }
-};
-
-var functionVisitor = {
-  enter: function (node, parent, scope, state) {
-    // traverse all child nodes of this function and find `arguments` and `this`
-    scope.traverse(node, functionChildrenVisitor, state);
-
-    return this.skip();
-  }
-};
-
-exports.FunctionDeclaration =
-exports.FunctionExpression = function (node, parent, scope, file) {
-  var tempId, helperRef;
-
-  var state = {
-    ownerId: node.id,
-
-    getHelperRef: function () {
-      return helperRef = helperRef || file.addHelper("tail-call");
-    },
-
-    wrapSideEffect: function (node) {
-      if (t.isIdentifier(node) || t.isLiteral(node)) {
-        return {expr: node, ref: node};
-      }
-      tempId = tempId || scope.generateUidIdentifier("temp");
-      return {
-        expr: t.assignmentExpression("=", tempId, node),
-        ref: tempId
-      };
-    }
-  };
-
-  // traverse the function and look for tail recursion
-  scope.traverse(node, functionVisitor, state);
-
-  if (tempId) {
-    t.ensureBlock(node).body.unshift(t.variableDeclaration("var", [
-      t.variableDeclarator(tempId)
-    ]));
-  }
-};

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

@@ -1,15 +0,0 @@
-"use strict";
-
-var t = require("../../../types");
-
-exports.check = t.isArrowFunctionExpression;
-
-exports.ArrowFunctionExpression = function (node) {
-  t.ensureBlock(node);
-
-  node._aliasFunction = "arrow";
-  node.expression = false;
-  node.type = "FunctionExpression";
-
-  return node;
-};

lib/6to5/transformation/transformers/es6/block-scoping-tdz.js

@@ -1,45 +0,0 @@
-"use strict";
-
-var t = require("../../../types");
-
-var visitor = {
-  enter: function (node, parent, scope, state) {
-    if (!t.isReferencedIdentifier(node, parent)) return;
-
-    var declared = state.letRefs[node.name];
-    if (!declared) return;
-
-    // declared node is different in this scope
-    if (scope.getBinding(node.name) !== declared) return;
-
-    var assert = t.callExpression(
-      state.file.addHelper("temporal-assert-defined"),
-      [node, t.literal(node.name), state.file.addHelper("temporal-undefined")]
-    );
-
-    this.skip();
-
-    if (t.isAssignmentExpression(parent) || t.isUpdateExpression(parent)) {
-      if (parent._ignoreBlockScopingTDZ) return;
-      this.parentPath.replaceNode(t.sequenceExpression([assert, parent]));
-    } else {
-      return t.logicalExpression("&&", assert, node);
-    }
-  }
-};
-
-exports.optional = true;
-
-exports.Loop =
-exports.Program =
-exports.BlockStatement = function (node, parent, scope, file) {
-  var letRefs = node._letReferences;
-  if (!letRefs) return;
-
-  var state = {
-    letRefs: letRefs,
-    file:    file
-  };
-
-  scope.traverse(node, visitor, state);
-};

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

@@ -1,540 +0,0 @@
-"use strict";
-
-var traverse = require("../../../traversal");
-var object   = require("../../../helpers/object");
-var util     = require("../../../util");
-var t        = require("../../../types");
-var values   = require("lodash/object/values");
-var extend   = require("lodash/object/extend");
-
-exports.check = function (node) {
-  return t.isVariableDeclaration(node) && (node.kind === "let" || node.kind === "const");
-};
-
-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 (isLetInitable(node, parent)) {
-    for (var i = 0; i < node.declarations.length; i++) {
-      var declar = node.declarations[i];
-      declar.init = declar.init || t.identifier("undefined");
-    }
-  }
-
-  node._let = true;
-  node.kind = "var";
-  return true;
-};
-
-var isLetInitable = function (node, parent) {
-  return !t.isFor(parent) || t.isFor(parent) && parent.left !== node;
-};
-
-var isVar = function (node, parent) {
-  return t.isVariableDeclaration(node, { kind: "var" }) && !isLet(node, parent);
-};
-
-var standardizeLets = function (declars) {
-  for (var i = 0; i < declars.length; i++) {
-    delete declars[i]._let;
-  }
-};
-
-exports.VariableDeclaration = function (node, parent, scope, file) {
-  if (!isLet(node, parent)) return;
-
-  if (isLetInitable(node) && file.transformers["es6.blockScopingTDZ"].canRun()) {
-    var nodes = [node];
-
-    for (var i = 0; i < node.declarations.length; i++) {
-      var decl = node.declarations[i];
-      if (decl.init) {
-        var assign = t.assignmentExpression("=", decl.id, decl.init);
-        assign._ignoreBlockScopingTDZ = true;
-        nodes.push(t.expressionStatement(assign));
-      }
-      decl.init = file.addHelper("temporal-undefined");
-    }
-
-    node._blockHoist = 2;
-
-    return nodes;
-  }
-};
-
-exports.Loop = function (node, parent, scope, file) {
-  var init = node.left || node.init;
-  if (isLet(init, node)) {
-    t.ensureBlock(node);
-    node.body._letDeclarators = [init];
-  }
-  var blockScoping = new BlockScoping(node, node.body, parent, scope, file);
-  blockScoping.run();
-};
-
-exports.Program =
-exports.BlockStatement = function (block, parent, scope, file) {
-  if (!t.isLoop(parent)) {
-    var blockScoping = new BlockScoping(false, block, parent, scope, file);
-    blockScoping.run();
-  }
-};
-
-/**
- * Description
- *
- * @param {Boolean|Node} loopParent
- * @param {Node} block
- * @param {Node} parent
- * @param {Scope} scope
- * @param {File} file
- */
-
-function BlockScoping(loopParent, block, parent, scope, file) {
-  this.loopParent = loopParent;
-  this.parent     = parent;
-  this.scope      = scope;
-  this.block      = block;
-  this.file       = file;
-
-  this.outsideLetReferences = object();
-  this.hasLetReferences     = false;
-  this.letReferences        = block._letReferences = object();
-  this.body                 = [];
-}
-
-/**
- * Start the ball rolling.
- */
-
-BlockScoping.prototype.run = function () {
-  var block = this.block;
-  if (block._letDone) return;
-  block._letDone = true;
-
-  var needsClosure = this.getLetReferences();
-
-  // this is a block within a `Function/Program` so we can safely leave it be
-  if (t.isFunction(this.parent) || t.isProgram(this.block)) return;
-
-  // we can skip everything
-  if (!this.hasLetReferences) return;
-
-  if (needsClosure) {
-    this.needsClosure();
-  } else {
-    this.remap();
-  }
-};
-
-function replace(node, parent, scope, remaps) {
-  if (!t.isReferencedIdentifier(node, parent)) return;
-
-  var remap = remaps[node.name];
-  if (!remap) return;
-
-  var ownBinding = scope.getBinding(node.name);
-  if (ownBinding === remap.binding) {
-    node.name = remap.uid;
-  } else {
-    // scope already has it's own binding that doesn't
-    // match the one we have a stored replacement for
-    if (this) this.skip();
-  }
-}
-
-var replaceVisitor = {
-  enter: replace
-};
-
-function traverseReplace(node, parent, scope, remaps) {
-  replace(node, parent, scope, remaps);
-  scope.traverse(node, replaceVisitor, remaps);
-}
-
-/**
- * Description
- */
-
-BlockScoping.prototype.remap = function () {
-  var hasRemaps = false;
-  var letRefs   = this.letReferences;
-  var scope     = this.scope;
-
-  // alright, so since we aren't wrapping this block in a closure
-  // we have to check if any of our let variables collide with
-  // those in upper scopes and then if they do, generate a uid
-  // for them and replace all references with it
-  var remaps = object();
-
-  for (var key in letRefs) {
-    // just an Identifier node we collected in `getLetReferences`
-    // this is the defining identifier of a declaration
-    var ref = letRefs[key];
-
-    if (scope.parentHasReference(key)) {
-      var uid = scope.generateUidIdentifier(ref.name).name;
-      ref.name = uid;
-
-      hasRemaps = true;
-      remaps[key] = remaps[uid] = {
-        binding: ref,
-        uid: uid
-      };
-    }
-  }
-
-  if (!hasRemaps) return;
-
-  //
-
-  var loopParent = this.loopParent;
-  if (loopParent) {
-    traverseReplace(loopParent.right, loopParent, scope, remaps);
-    traverseReplace(loopParent.test, loopParent, scope, remaps);
-    traverseReplace(loopParent.update, loopParent, scope, remaps);
-  }
-
-  scope.traverse(this.block, replaceVisitor, remaps);
-};
-
-/**
- * Description
- */
-
-BlockScoping.prototype.needsClosure = function () {
-  var block = this.block;
-
-  // 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();
-
-  // turn outsideLetReferences into an array
-  var params = values(this.outsideLetReferences);
-
-  // build the closure that we're going to wrap the block with
-  var fn = t.functionExpression(null, params, t.blockStatement(block.body));
-  fn._aliasFunction = true;
-
-  // replace the current block body with the one we're going to build
-  block.body = this.body;
-
-  // build a call and a unique id that we can assign the return value to
-  var call = t.callExpression(fn, params);
-  var ret  = this.scope.generateUidIdentifier("ret");
-
-  // handle generators
-  var hasYield = traverse.hasType(fn.body, this.scope, "YieldExpression", t.FUNCTION_TYPES);
-  if (hasYield) {
-    fn.generator = true;
-    call = t.yieldExpression(call, true);
-  }
-
-  // handlers async functions
-  var hasAsync = traverse.hasType(fn.body, this.scope, "AwaitExpression", t.FUNCTION_TYPES);
-  if (hasAsync) {
-    fn.async = true;
-    call = t.awaitExpression(call, true);
-  }
-
-  this.build(ret, call);
-};
-
-var letReferenceFunctionVisitor = {
-  enter: function (node, parent, scope, state) {
-    // not a direct reference
-    if (!t.isReferencedIdentifier(node, parent)) return;
-
-    // this scope has a variable with the same name so it couldn't belong
-    // to our let scope
-    if (scope.hasOwnBinding(node.name)) return;
-
-    // not a part of our scope
-    if (!state.letReferences[node.name]) return;
-
-    state.closurify = true;
-  }
-};
-
-var letReferenceBlockVisitor = {
-  enter: function (node, parent, scope, state) {
-    if (t.isFunction(node)) {
-      scope.traverse(node, letReferenceFunctionVisitor, state);
-      return this.skip();
-    }
-  }
-};
-
-/**
- * Description
- */
-
-BlockScoping.prototype.getLetReferences = function () {
-  var block = this.block;
-
-  var declarators = block._letDeclarators || [];
-  var declar;
-
-  //
-  for (var i = 0; i < declarators.length; i++) {
-    declar = declarators[i];
-    extend(this.outsideLetReferences, t.getBindingIdentifiers(declar));
-  }
-
-  //
-  if (block.body) {
-    for (i = 0; i < block.body.length; i++) {
-      declar = block.body[i];
-      if (isLet(declar, block)) {
-        declarators = declarators.concat(declar.declarations);
-      }
-    }
-  }
-
-  //
-  for (i = 0; i < declarators.length; i++) {
-    declar = declarators[i];
-    var keys = t.getBindingIdentifiers(declar);
-    extend(this.letReferences, keys);
-    this.hasLetReferences = true;
-  }
-
-  // no let references so we can just quit
-  if (!this.hasLetReferences) return;
-
-  // set let references to plain var references
-  standardizeLets(declarators);
-
-  var state = {
-    letReferences: this.letReferences,
-    closurify:     false
-  };
-
-  // traverse through this block, stopping on functions and checking if they
-  // contain any local let references
-  this.scope.traverse(this.block, letReferenceBlockVisitor, state);
-
-  return state.closurify;
-};
-
-var loopNodeTo = function (node) {
-  if (t.isBreakStatement(node)) {
-    return "break";
-  } else if (t.isContinueStatement(node)) {
-    return "continue";
-  }
-};
-
-var loopVisitor = {
-  enter: function (node, parent, scope, state) {
-    var replace;
-
-    if (t.isLoop(node)) {
-      state.ignoreLabeless = true;
-      scope.traverse(node, loopVisitor, state);
-      state.ignoreLabeless = false;
-    }
-
-    if (t.isFunction(node) || t.isLoop(node)) {
-      return this.skip();
-    }
-
-    var loopText = loopNodeTo(node);
-
-    if (loopText) {
-      if (node.label) {
-        // we shouldn't be transforming this because it exists somewhere inside
-        if (state.innerLabels.indexOf(node.label.name) >= 0) {
-          return;
-        }
-
-        loopText = loopText + "|" + node.label.name;
-      } else {
-        // we shouldn't be transforming these statements because
-        // they don't refer to the actual loop we're scopifying
-        if (state.ignoreLabeless) return;
-
-        // break statements mean something different in this context
-        if (t.isBreakStatement(node) && t.isSwitchCase(parent)) return;
-      }
-
-      state.hasBreakContinue = true;
-      state.map[loopText] = node;
-      replace = t.literal(loopText);
-    }
-
-    if (t.isReturnStatement(node)) {
-      state.hasReturn = true;
-      replace = t.objectExpression([
-        t.property("init", t.identifier("v"), node.argument || t.identifier("undefined"))
-      ]);
-    }
-
-    if (replace) {
-      replace = t.returnStatement(replace);
-      return t.inherits(replace, node);
-    }
-  }
-};
-
-var loopLabelVisitor = {
-  enter: function (node, parent, scope, state) {
-    if (t.isLabeledStatement(node)) {
-      state.innerLabels.push(node.label.name);
-    }
-  }
-};
-
-/**
- * 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}
- */
-
-BlockScoping.prototype.checkLoop = function () {
-  var state = {
-    hasBreakContinue: false,
-    ignoreLabeless:   false,
-    innerLabels:      [],
-    hasReturn:        false,
-    isLoop:           !!this.loopParent,
-    map:              {}
-  };
-
-  this.scope.traverse(this.block, loopLabelVisitor, state);
-  this.scope.traverse(this.block, loopVisitor, state);
-
-  return state;
-};
-
-var hoistVarDeclarationsVisitor = {
-  enter: function (node, parent, scope, self) {
-    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();
-    }
-  }
-};
-
-/**
- * Hoist all var declarations in this block to before it so they retain scope
- * once we wrap everything in a closure.
- */
-
-BlockScoping.prototype.hoistVarDeclarations = function () {
-  traverse(this.block, hoistVarDeclarationsVisitor, this.scope, this);
-};
-
-/**
- * Turn a `VariableDeclaration` into an array of `AssignmentExpressions` with
- * their declarations hoisted to before the closure wrapper.
- *
- * @param {Node} node VariableDeclaration
- * @returns {Array}
- */
-
-BlockScoping.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 = 0; i < node.declarations.length; i++) {
-    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
- */
-
-BlockScoping.prototype.build = function (ret, call) {
-  var has = this.has;
-  if (has.hasReturn || has.hasBreakContinue) {
-    this.buildHas(ret, call);
-  } else {
-    this.body.push(t.expressionStatement(call));
-  }
-};
-
-/**
- * Description
- *
- * @param {Node} ret Identifier
- * @param {Node} call CallExpression
- */
-
-BlockScoping.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.hasBreakContinue) {
-    if (!loopParent) {
-      throw new Error("Has no loop parent but we're trying to reassign breaks " +
-                      "and continues, something is going wrong here.");
-    }
-
-    for (var key in has.map) {
-      cases.push(t.switchCase(t.literal(key), [has.map[key]]));
-    }
-
-    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/classes.js

@@ -1,270 +0,0 @@
-"use strict";
-
-var ReplaceSupers = require("../../helpers/replace-supers");
-var nameMethod    = require("../../helpers/name-method");
-var defineMap     = require("../../helpers/define-map");
-var util          = require("../../../util");
-var t             = require("../../../types");
-
-exports.check = t.isClass;
-
-exports.ClassDeclaration = function (node, parent, scope, file) {
-  return new Class(node, file, scope, true).run();
-};
-
-exports.ClassExpression = function (node, parent, scope, file) {
-  if (!node.id) {
-    if (t.isProperty(parent) && parent.value === node && !parent.computed && t.isIdentifier(parent.key)) {
-      // var o = { foo: class {} };
-      node.id = parent.key;
-    }
-
-    if (t.isVariableDeclarator(parent) && t.isIdentifier(parent.id)) {
-      // var foo = class {};
-      node.id = parent.id;
-    }
-  }
-
-  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 || scope.generateUidIdentifier("class");
-  this.superName          = node.superClass || t.identifier("Function");
-  this.hasSuper           = !!node.superClass;
-  this.isLoose            = file.isLoose("es6.classes");
-}
-
-/**
- * Description
- *
- * @returns {Array}
- */
-
-Class.prototype.run = function () {
-  var superName = this.superName;
-  var className = this.className;
-  var file      = this.file;
-
-  //
-
-  var body = this.body = [];
-
-  var constructorBody = t.blockStatement([
-    t.expressionStatement(t.callExpression(file.addHelper("class-call-check"), [
-      t.thisExpression(),
-      className
-    ]))
-  ]);
-  var constructor;
-
-  if (this.node.id) {
-    constructor = t.functionDeclaration(className, [], constructorBody);
-    body.push(constructor);
-  } else {
-    constructor = t.functionExpression(null, [], constructorBody);
-    body.push(t.variableDeclaration("var", [
-      t.variableDeclarator(className, constructor)
-    ]));
-  }
-  this.constructor = constructor;
-
-  var closureParams = [];
-  var closureArgs = [];
-
-  //
-
-  if (this.hasSuper) {
-    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;
-
-  for (var i = 0; i < classBody.length; i++) {
-    var node = classBody[i];
-    if (t.isMethodDefinition(node)) {
-      var replaceSupers = new ReplaceSupers({
-        methodNode: node,
-        className:  this.className,
-        superName:  this.superName,
-        isStatic:   node.static,
-        isLoose:    this.isLoose,
-        scope:      this.scope,
-        file:       this.file
-      }, true);
-      replaceSupers.replace();
-
-      if (node.key.name === "constructor") {
-        this.pushConstructor(node);
-      } else {
-        this.pushMethod(node);
-      }
-    } else if (t.isPrivateDeclaration(node)) {
-      this.closure = true;
-      body.unshift(node);
-    }
-  }
-
-  // we have no constructor, we have a super, and the super doesn't appear to be falsy
-  if (!this.hasConstructor && this.hasSuper && !t.isFalsyExpression(superName)) {
-    var helperName = "class-super-constructor-call";
-    if (this.isLoose) helperName += "-loose";
-    constructor.body.body.push(util.template(helperName, {
-      CLASS_NAME: className,
-      SUPER_NAME: this.superName
-    }, true));
-  }
-
-  var instanceProps;
-  var staticProps;
-
-  if (this.hasInstanceMutators) {
-    instanceProps = defineMap.build(this.instanceMutatorMap);
-  }
-
-  if (this.hasStaticMutators) {
-    staticProps = defineMap.build(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;
-
-  if (kind === "") {
-    nameMethod.property(node, this.file, this.scope);
-
-    if (this.isLoose) {
-      // use assignments instead of define properties for loose classes
-
-      var className = this.className;
-      if (!node.static) className = t.memberExpression(className, t.identifier("prototype"));
-      methodName = t.memberExpression(className, methodName, node.computed);
-
-      var expr = t.expressionStatement(t.assignmentExpression("=", methodName, node.value));
-      t.inheritsComments(expr, node);
-      this.body.push(expr);
-      return;
-    }
-
-    kind = "value";
-  }
-
-  var mutatorMap = this.instanceMutatorMap;
-  if (node.static) {
-    this.hasStaticMutators = true;
-    mutatorMap = this.staticMutatorMap;
-  } else {
-    this.hasInstanceMutators = true;
-  }
-
-  defineMap.push(mutatorMap, methodName, kind, node.computed, node);
-  defineMap.push(mutatorMap, methodName, "enumerable", node.computed, false);
-};
-
-/**
- * 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.params                = fn.params;
-  construct.body.body             = construct.body.body.concat(fn.body.body);
-};

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

@@ -1,47 +0,0 @@
-"use strict";
-
-var t = require("../../../types");
-
-exports.check = function (node) {
-  return t.isVariableDeclaration(node, { kind: "const" });
-};
-
-var visitor = {
-  enter: function (node, parent, scope, state) {
-    if (t.isAssignmentExpression(node) || t.isUpdateExpression(node)) {
-      var ids = t.getBindingIdentifiers(node);
-
-      for (var key in ids) {
-        var id = ids[key];
-
-        var constant = state.constants[key];
-
-        // no constant exists
-        if (!constant) continue;
-
-        // check if the assignment id matches the constant declaration id
-        // if it does then it was the id used to initially declare the
-        // constant so we can just ignore it
-        if (id === constant) continue;
-
-        // check if there's been a local binding that shadows this constant
-        if (!scope.bindingEquals(key, constant)) continue;
-
-        throw state.file.errorWithNode(id, key + " is read-only");
-      }
-    } else if (t.isScope(node)) {
-      this.skip();
-    }
-  }
-};
-
-exports.Scope = function (node, parent, scope, file) {
-  scope.traverse(node, visitor, {
-    constants: scope.getAllDeclarationsOfKind("const"),
-    file:      file
-  });
-};
-
-exports.VariableDeclaration = function (node) {
-  if (node.kind === "const") node.kind = "let";
-};

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

@@ -1,400 +0,0 @@
-"use strict";
-
-var t = require("../../../types");
-
-exports.check = t.isPattern;
-
-function Destructuring(opts) {
-  this.blockHoist = opts.blockHoist;
-  this.operator   = opts.operator;
-  this.nodes      = opts.nodes;
-  this.scope      = opts.scope;
-  this.file       = opts.file;
-  this.kind       = opts.kind;
-}
-
-Destructuring.prototype.buildVariableAssignment = function (id, init) {
-  var op = this.operator;
-  if (t.isMemberExpression(id)) op = "=";
-
-  var node;
-
-  if (op) {
-    node = t.expressionStatement(t.assignmentExpression(op, id, init));
-  } else {
-    node = t.variableDeclaration(this.kind, [
-      t.variableDeclarator(id, init)
-    ]);
-  }
-
-  node._blockHoist = this.blockHoist;
-
-  return node;
-};
-
-Destructuring.prototype.buildVariableDeclaration = function (id, init) {
-  var declar = t.variableDeclaration("var", [
-    t.variableDeclarator(id, init)
-  ]);
-  declar._blockHoist = this.blockHoist;
-  return declar;
-};
-
-Destructuring.prototype.push = function (elem, parentId) {
-  if (t.isObjectPattern(elem)) {
-    this.pushObjectPattern(elem, parentId);
-  } else if (t.isArrayPattern(elem)) {
-    this.pushArrayPattern(elem, parentId);
-  } else if (t.isAssignmentPattern(elem)) {
-    this.pushAssignmentPattern(elem, parentId);
-  } else {
-    this.nodes.push(this.buildVariableAssignment(elem, parentId));
-  }
-};
-
-Destructuring.prototype.pushAssignmentPattern = function (pattern, parentId) {
-  var tempParentId = this.scope.generateUidBasedOnNode(parentId);
-
-  var declar = t.variableDeclaration("var", [
-    t.variableDeclarator(tempParentId, parentId)
-  ]);
-  declar._blockHoist = this.blockHoist;
-  this.nodes.push(declar);
-
-  this.nodes.push(this.buildVariableAssignment(
-    pattern.left,
-    t.conditionalExpression(
-      t.binaryExpression("===", tempParentId, t.identifier("undefined")),
-      pattern.right,
-      tempParentId
-    )
-  ));
-};
-
-Destructuring.prototype.pushObjectSpread = function (pattern, parentId, prop, i) {
-  // get all the keys that appear in this object before the current spread
-  var keys = [];
-  for (var i2 = 0; i2 < pattern.properties.length; i2++) {
-    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(this.file.addHelper("object-without-properties"), [parentId, keys]);
-  this.nodes.push(this.buildVariableAssignment(prop.argument, value));
-};
-
-Destructuring.prototype.pushObjectProperty = function (prop, parentId) {
-  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)) {
-    this.push(pattern2, patternId2);
-  } else {
-    this.nodes.push(this.buildVariableAssignment(pattern2, patternId2));
-  }
-};
-
-Destructuring.prototype.pushObjectPattern = function (pattern, parentId) {
-  if (!pattern.properties.length) {
-    this.nodes.push(t.expressionStatement(
-      t.callExpression(this.file.addHelper("object-destructuring-empty"), [parentId])
-    ));
-  }
-
-  if (pattern.properties.length > 1 && t.isMemberExpression(parentId)) {
-    var temp = this.scope.generateUidBasedOnNode(parentId, this.file);
-    this.nodes.push(this.buildVariableDeclaration(temp, parentId));
-    parentId = temp;
-  }
-
-  for (var i = 0; i < pattern.properties.length; i++) {
-    var prop = pattern.properties[i];
-    if (t.isSpreadProperty(prop)) {
-      this.pushObjectSpread(pattern, parentId, prop, i);
-    } else {
-      this.pushObjectProperty(prop, parentId);
-    }
-  }
-};
-
-var hasRest = function (pattern) {
-  for (var i = 0; i < pattern.elements.length; i++) {
-    if (t.isRestElement(pattern.elements[i])) {
-      return true;
-    }
-  }
-  return false;
-};
-
-Destructuring.prototype.pushArrayPattern = function (pattern, parentId) {
-  if (!pattern.elements) return;
-
-  // if we have a rest then we need all the elements
-  var count = !hasRest(pattern) && pattern.elements.length;
-
-  var toArray = this.file.toArray(parentId, count);
-
-  var _parentId = this.scope.generateUidBasedOnNode(parentId, this.file);
-  this.nodes.push(this.buildVariableDeclaration(_parentId, toArray));
-  parentId = _parentId;
-
-  for (var i = 0; i < pattern.elements.length; i++) {
-    var elem = pattern.elements[i];
-
-    // hole
-    if (!elem) continue;
-
-    var newPatternId;
-
-    if (t.isRestElement(elem)) {
-      newPatternId = this.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);
-    }
-
-    this.push(elem, newPatternId);
-  }
-};
-
-Destructuring.prototype.init = function (pattern, parentId) {
-  if (!t.isArrayExpression(parentId) && !t.isMemberExpression(parentId) && !t.isIdentifier(parentId)) {
-    var key = this.scope.generateUidBasedOnNode(parentId);
-    this.nodes.push(this.buildVariableDeclaration(key, parentId));
-    parentId = key;
-  }
-
-  this.push(pattern, parentId);
-};
-
-exports.ForInStatement =
-exports.ForOfStatement = function (node, parent, scope, file) {
-  var left = node.left;
-
-  if (t.isPattern(left)) {
-    // for ({ length: k } in { abc: 3 });
-
-    var temp = scope.generateUidIdentifier("ref");
-
-    node.left = t.variableDeclaration("var", [
-      t.variableDeclarator(temp)
-    ]);
-
-    t.ensureBlock(node);
-
-    node.body.body.unshift(t.variableDeclaration("var", [
-      t.variableDeclarator(left, temp)
-    ]));
-
-    return;
-  }
-
-  if (!t.isVariableDeclaration(left)) return;
-
-  var pattern = left.declarations[0].id;
-  if (!t.isPattern(pattern)) return;
-
-  var key = scope.generateUidIdentifier("ref");
-  node.left = t.variableDeclaration(left.kind, [
-    t.variableDeclarator(key, null)
-  ]);
-
-  var nodes = [];
-
-  var destructuring = new Destructuring({
-    kind: left.kind,
-    file: file,
-    scope: scope,
-    nodes: nodes
-  });
-
-  destructuring.init(pattern, key);
-
-  t.ensureBlock(node);
-
-  var block = node.body;
-  block.body = nodes.concat(block.body);
-};
-
-exports.Function = function (node, parent, scope, file) {
-  var nodes = [];
-
-  var hasDestructuring = false;
-
-  node.params = node.params.map(function (pattern, i) {
-    if (!t.isPattern(pattern)) return pattern;
-
-    hasDestructuring = true;
-    var parentId = scope.generateUidIdentifier("ref");
-
-    var destructuring = new Destructuring({
-      blockHoist: node.params.length - i,
-      nodes:      nodes,
-      scope:      scope,
-      file:       file,
-      kind:       "var",
-    });
-    destructuring.init(pattern, parentId);
-
-    return parentId;
-  });
-
-  if (!hasDestructuring) return;
-
-  t.ensureBlock(node);
-
-  var block = node.body;
-  block.body = nodes.concat(block.body);
-};
-
-exports.CatchClause = function (node, parent, scope, file) {
-  var pattern = node.param;
-  if (!t.isPattern(pattern)) return;
-
-  var ref = scope.generateUidIdentifier("ref");
-  node.param = ref;
-
-  var nodes = [];
-
-  var destructuring = new Destructuring({
-    kind: "let",
-    file: file,
-    scope: scope,
-    nodes: nodes
-  });
-  destructuring.init(pattern, ref);
-
-  node.body.body = nodes.concat(node.body.body);
-
-  return node;
-};
-
-exports.ExpressionStatement = function (node, parent, scope, file) {
-  var expr = node.expression;
-  if (expr.type !== "AssignmentExpression") return;
-  if (!t.isPattern(expr.left)) return;
-  if (file.isConsequenceExpressionStatement(node)) return;
-
-  var nodes = [];
-
-  var ref = scope.generateUidIdentifier("ref");
-  nodes.push(t.variableDeclaration("var", [
-    t.variableDeclarator(ref, expr.right)
-  ]));
-
-  var destructuring = new Destructuring({
-    operator: expr.operator,
-    file: file,
-    scope: scope,
-    nodes: nodes
-  });
-  destructuring.init(expr.left, ref);
-
-  return nodes;
-};
-
-exports.AssignmentExpression = function (node, parent, scope, file) {
-  if (!t.isPattern(node.left)) return;
-
-  var ref = scope.generateUidIdentifier("temp");
-  scope.push({
-    key: ref.name,
-    id: ref
-  });
-
-  var nodes = [];
-  nodes.push(t.assignmentExpression("=", ref, node.right));
-
-  var destructuring = new Destructuring({
-    operator: node.operator,
-    file: file,
-    scope: scope,
-    nodes: nodes
-  });
-  destructuring.init(node.left, ref);
-
-  nodes.push(ref);
-
-  return t.toSequenceExpression(nodes, scope);
-};
-
-var variableDeclarationhasPattern = function (node) {
-  for (var i = 0; i < node.declarations.length; i++) {
-    if (t.isPattern(node.declarations[i].id)) {
-      return true;
-    }
-  }
-  return false;
-};
-
-exports.VariableDeclaration = function (node, parent, scope, file) {
-  if (t.isForInStatement(parent) || t.isForOfStatement(parent)) return;
-  if (!variableDeclarationhasPattern(node)) return;
-
-  var nodes = [];
-  var declar;
-
-  for (var i = 0; i < node.declarations.length; i++) {
-    declar = node.declarations[i];
-
-    var patternId = declar.init;
-    var pattern   = declar.id;
-
-    var destructuring = new Destructuring({
-      nodes: nodes,
-      scope: scope,
-      kind:  node.kind,
-      file:  file
-    });
-
-    if (t.isPattern(pattern) && patternId) {
-      destructuring.init(pattern, patternId);
-
-      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(destructuring.buildVariableAssignment(declar.id, declar.init), declar));
-    }
-  }
-
-  if (!t.isProgram(parent) && !t.isBlockStatement(parent)) {
-    // https://github.com/6to5/6to5/issues/113
-    // for (let [x] = [0]; false;) {}
-
-    declar = null;
-
-    for (i = 0; i < nodes.length; i++) {
-      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

@@ -1,105 +0,0 @@
-"use strict";
-
-var util = require("../../../util");
-var t    = require("../../../types");
-
-exports.check = t.isForOfStatement;
-
-exports.ForOfStatement = function (node, parent, scope, file) {
-  var callback = spec;
-  if (file.isLoose("es6.forOf")) callback = loose;
-
-  var build  = callback(node, parent, scope, file);
-  var declar = build.declar;
-  var loop   = build.loop;
-  var block  = loop.body;
-
-  // inherit comments from the original loop
-  t.inheritsComments(loop, node);
-
-  // ensure that it's a block so we can take all it's statemetns
-  t.ensureBlock(node);
-
-  // add the value declaration to the new loop body
-  if (declar) {
-    block.body.push(declar);
-  }
-
-  // push the rest of the original loop body onto our new body
-  block.body = block.body.concat(node.body.body);
-
-  t.inherits(loop, node);
-
-  // todo: find out why this is necessary? #538
-  loop._scopeInfo = node._scopeInfo;
-
-  return loop;
-};
-
-var loose = function (node, parent, scope, file) {
-  var left = node.left;
-  var declar, id;
-
-  if (t.isIdentifier(left) || t.isPattern(left)) {
-    // for (i of test), for ({ i } of test)
-    id = left;
-  } else if (t.isVariableDeclaration(left)) {
-    // for (var i of test)
-    id = scope.generateUidIdentifier("ref");
-    declar = t.variableDeclaration(left.kind, [
-      t.variableDeclarator(left.declarations[0].id, id)
-    ]);
-  } else {
-    throw file.errorWithNode(left, "Unknown node type " + left.type + " in ForOfStatement");
-  }
-
-  var loop = util.template("for-of-loose", {
-    LOOP_OBJECT:  scope.generateUidIdentifier("iterator"),
-    IS_ARRAY:     scope.generateUidIdentifier("isArray"),
-    OBJECT:       node.right,
-    INDEX:        scope.generateUidIdentifier("i"),
-    ID:           id
-  });
-
-  if (!declar) {
-    // no declaration so we need to remove the variable declaration at the top of
-    // the for-of-loose template
-    loop.body.body.shift();
-  }
-
-  return {
-    declar: declar,
-    loop:   loop
-  };
-};
-
-var spec = function (node, parent, scope, file) {
-  var left = node.left;
-  var declar;
-
-  var stepKey   = scope.generateUidIdentifier("step");
-  var stepValue = t.memberExpression(stepKey, t.identifier("value"));
-
-  if (t.isIdentifier(left) || t.isPattern(left)) {
-    // for (i of test), for ({ i } of test)
-    declar = t.expressionStatement(t.assignmentExpression("=", left, stepValue));
-  } else if (t.isVariableDeclaration(left)) {
-    // for (var i of test)
-    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 loop = util.template("for-of", {
-    ITERATOR_KEY: scope.generateUidIdentifier("iterator"),
-    STEP_KEY:     stepKey,
-    OBJECT:       node.right
-  });
-
-  return {
-    declar: declar,
-    loop:   loop
-  };
-};

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

@@ -1,52 +0,0 @@
-"use strict";
-
-var t = require("../../../types");
-
-exports.check = require("../internal/modules").check;
-
-exports.ImportDeclaration = function (node, parent, scope, file) {
-  var nodes = [];
-
-  if (node.specifiers.length) {
-    for (var i = 0; i < node.specifiers.length; i++) {
-      file.moduleFormatter.importSpecifier(node.specifiers[i], node, nodes, parent);
-    }
-  } else {
-    file.moduleFormatter.importDeclaration(node, nodes, parent);
-  }
-
-  if (nodes.length === 1) {
-    // inherit `_blockHoist` - this is for `_blockHoist` in File.prototype.addImport
-    nodes[0]._blockHoist = node._blockHoist;
-  }
-
-  return nodes;
-};
-
-exports.ExportDeclaration = function (node, parent, scope, file) {
-  var nodes = [];
-  var i;
-
-  if (node.declaration) {
-    // make sure variable exports have an initializer
-    // 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 if (node.specifiers) {
-    for (i = 0; i < node.specifiers.length; i++) {
-      file.moduleFormatter.exportSpecifier(node.specifiers[i], node, nodes, parent);
-    }
-  }
-
-  if (node._blockHoist) {
-    for (i = 0; i < nodes.length; i++) {
-      nodes[i]._blockHoist = node._blockHoist;
-    }
-  }
-
-  return nodes;
-};