babel-6.26.0/000775 000000 000000 00000000000 13145065240 012632 5ustar00rootroot000000 000000 babel-6.26.0/.editorconfig000664 000000 000000 00000000242 13145065240 015305 0ustar00rootroot000000 000000 root = true [*] insert_final_newline = true charset = utf-8 trim_trailing_whitespace = true end_of_line = lf [*.{js,json}] indent_style = space indent_size = 2 babel-6.26.0/.eslintignore000664 000000 000000 00000000311 13145065240 015330 0ustar00rootroot000000 000000 /lib scripts packages/babel-core/src/transformation/templates packages/babel-runtime packages/*/node_modules packages/*/lib packages/*/dist packages/*/test/fixtures vendor _babel.github.io Gulpfile.js babel-6.26.0/.eslintrc000664 000000 000000 00000000137 13145065240 014457 0ustar00rootroot000000 000000 { "extends": "babel", "rules": { }, "env": { "node": true, "mocha": true } } babel-6.26.0/.flowconfig000664 000000 000000 00000000431 13145065240 014766 0ustar00rootroot000000 000000 [ignore] .*/packages/.*/lib .*/packages/.*/test .*/node_modules/conventional-changelog-core/ [include] packages/*/src [libs] lib/file.js lib/parser.js lib/types.js [options] strip_root=true suppress_comment= \\(.\\|\n\\)*\\$FlowFixMe suppress_comment= \\(.\\|\n\\)*\\$FlowIssue babel-6.26.0/.gitattributes000664 000000 000000 00000000016 13145065240 015522 0ustar00rootroot000000 000000 * text eol=lf babel-6.26.0/.github/000775 000000 000000 00000000000 13145065240 014172 5ustar00rootroot000000 000000 babel-6.26.0/.github/ISSUE_TEMPLATE.md000664 000000 000000 00000004121 13145065240 016675 0ustar00rootroot000000 000000 ### Input Code ```js var your => (code) => here; ``` ### Babel Configuration (.babelrc, package.json, cli command) ```js { "your": { "config": "here" } } ``` ### Expected Behavior ### Current Behavior ### Possible Solution ### Context ### Your Environment | software | version | ---------------- | ------- | Babel | | node | | npm | | Operating System | babel-6.26.0/.github/PULL_REQUEST_TEMPLATE.md000664 000000 000000 00000001630 13145065240 017773 0ustar00rootroot000000 000000 | Q | A | ------------------------ | --- | Patch: Bug Fix? | | Major: Breaking Change? | | Minor: New Feature? | | Deprecations? | | Spec Compliancy? | | Tests Added/Pass? | | Fixed Tickets | `Fixes #1, Fixes #2` | License | MIT | Doc PR | | Dependency Changes | babel-6.26.0/.gitignore000664 000000 000000 00000000576 13145065240 014632 0ustar00rootroot000000 000000 .DS_Store node_modules test/tmp *.log *.cache /.eslintcache /templates.json /tests.json /browser.js /browser-polyfill.js /runtime.js /coverage dist package-lock.json /.package.json /packages/babel-runtime/core-js /packages/babel-runtime/helpers/*.js /packages/babel-register/test/.babel /packages/*/lib _babel.github.io /tests/.browser-build.js .nyc_output /babel.sublime-workspace babel-6.26.0/.mention-bot000664 000000 000000 00000000317 13145065240 015067 0ustar00rootroot000000 000000 { "userBlacklist": [ "amasad", "greenkeeperio-bot", "jmm", "kittens", "thejameskyle" ], "fileBlacklist": ["*.md"], "skipAlreadyAssignedPR": true, "createReviewRequest": true } babel-6.26.0/.travis.yml000664 000000 000000 00000001617 13145065240 014750 0ustar00rootroot000000 000000 git: depth: 10 sudo: false language: node_js cache: directories: - node_modules node_js: - '6' - '5' - '4' - '0.12' env: - JOB=test script: - 'if [ "$JOB" = "test" ]; then make test-ci; fi' - 'if [ "$JOB" = "test-coverage" ]; then make test-ci-coverage; fi' - 'if [ "$JOB" = "lint" ]; then make lint && make flow; fi' matrix: fast_finish: true include: - node_js: "7" env: JOB=test-coverage - node_js: "node" env: JOB=lint notifications: slack: on_success: change on_failure: always rooms: # Generate with # travis encrypt "babeljs:#activity" --add notifications.slack.rooms # where is from the Slack integration settings. secure: SrwPKRe2AiNAKRo/+2yW/x4zxbWf2FBXuBuuPkdTJVTpWe++Jin1lXYJWTKP1a1i/IbmhffBO9YZcUFbeuXJpRM083vO8VYpyuBMQRqWD+Z3o+ttPlHGOJgnj0nkIcGRk6k7PpyHNnIkixfEJDvbbg9lN1Jswb3xkL8iYIHpuFE= babel-6.26.0/CHANGELOG-6to5.md000664 000000 000000 00000100350 13145065240 015235 0ustar00rootroot000000 000000 # 6to5 Changelog ## 3.6.6 * **Internal** * Upgrade `core-js`. * **Bug Fix** * Fix temp variables not being properly pushed inside of `while` loops. * **New Feature** * Add `auxiliaryComment`/`--auxiliary-comment` option that prepends comments to auxiliary helpers. ## 3.6.5 * **Internal** * Upgrade `core-js`. * **Bug Fix** * Fix block scoping leaking variables in IIFE mode. * Fix tail call transformer exploding on return statements as the consequent of an if statement. * **New Feature** * Add `validation.react` transformer. ## 3.6.4 * **New Feature** * Add support for flow type casts and module types. ## 3.6.3 * **Internal** * Upgrade `acorn-6to5`. * Use `default` property on `6to5-runtime`. ## 3.6.2 * **Polish** * Use better iterator detection in `slicedToArray` helper and add support for it to the `selfContained` transformer. ## 3.6.1 * **Bug Fix** * Multiline JSX string literals are now supported. * Fix scope tracking import specifiers incorrectly. * Fix templates incorrectly recursing into their replacements. * **Internal** * Type inferrence now extends to function return types. * Upgrade `acorn-6to5`. ## 3.6.0 * **New Feature** * Add playground class property initializers. * **Polish** * Completely reimplemented scope tracking, can now track types and optimise certain helpers based on it. * Extremely fast tail recursion optimisation implementation. Thanks [@RReverser](https://github.com/RReverser)! * **Internal** * `kexec` has been removed as an optional dependency and must be user installed. * Upgrade `regenerator-6to5`. * Upgrade `acorn-6to5`. * Upgrade `core-js`. ## 3.5.3 * Enable `es6.tailCall` transformer with the first implementation that only works with self referencing calls until we can implement nested tail calls elegantly. ## 3.5.2 * Disable `es6.tailCall` temporairly after reports of it breaking. ## 3.5.1 * **Polish** * Allow tail calls to work across files without the runtime. * **Internal** * Upgrade `acorn-6to5`. ## 3.5.0 * **Bug Fix** * Destructuring patterns as the left operator in `ForInStatement`/`ForOfStatement`. * **Polish** * Make default parameter IIFE invocation smarter. * Make `__esModule` flag non-enumerable. Thanks [@daliwali](https://github.com/daliwali)! * **Internal** * More performance improvements. * Parsing is now ~30% faster thanks to [marijnh/acorn@7264bc0178e7e6af7cfe02e9e0c6b26ee0e6007f](https://github.com/marijnh/acorn/commit/7264bc0178e7e6af7cfe02e9e0c6b26ee0e6007f). * **New Feature** * Optional `es6.blockScopingTDZ` is now completely functional and handles all edgecases. * `super` in object literals. * Tail call optimisation. Thanks [@RReverser](https://github.com/RReverser)! ## 3.4.1 * **Bug Fix** * Fix conflicting `--module-ids` shorthand arg in `$ 6to5`. * Add require hook options to cache key. * Fix strict module formatter. ## 3.4.0 * **New Feature** * Add `commonStandard` module formatter. * **Bug Fix** * Fix conflicting `--module-ids` shorthand arg in `$ 6to5`. * **Internal** * Lots of internal refactoring with scope tracking and traversal. * **Polish** * Don't return `map` in the API result if `sourceMap` was set to `"inline"`. ## 3.3.12 * **Bug Fix** * Don't override `MemberExpression`s with `core-js` in `selfContained` if a local binding exists. ## 3.3.11 * **Bug Fix** * Fix the require cache. ## 3.3.10 * **Internal** * Restructure transformers so they're only ran if the AST contains nodes that they need to worry about. Improves transpilation speed significantly. * **Bug Fix** * Fix source maps not tracking end of node locations. * **Spec Compliancy** * Use static super references as the home object is actually done at definition time. * **Polish** * Force the `es6.destructuring` transformer to be whitelisted when the `es7.objectSpread` transformer is. * Join sibling string literals when creating JSX. ## 3.3.9 * **Bug Fix** * Fix super inside of functions. * Fix super constructor inheritance. ## 3.3.7 * **Bug Fix** * Add `--use-strict` to valid node flags in `6to5-node`. * Fix booleans not being properly stripped from the arguments in `6to5-node`. * Force `.js` extension when writing files to directories with `6to5`. ## 3.3.5 * **Bug Fix** * Fix block scoping inside of while loops. * Make module name regex more conservative. Thanks [@johlrich](https://github.com/johlrich)! * Fix block scoping of constants. * Fix istanbul interop. * Make JSX transforming more inline with the official transformer with spaces after non-empty last lines. * **Polish** * Make it illegal to export a property called `__esModule`. ## 3.3.4 * **Polish** * Add istanbul `require` interop. * **Bug Fix** * Fix incorrect source map column tracking in specific scenarios. ## 3.3.3 * **Polish** * Remap top level `this` to `undefined` instead of throwing an error. * **Bug Fix** * Run `selfContained` transformer over the regenerator runtime when building `6to5-runtime`. * Fix `t.isReferenced` not properly allowing `value` nodes. ## 3.3.1 * **Bug Fix** * Block hoist assignment pattern destructuring. ## 3.3.0 * **Bug Fix** * Do all transforms before the regenerator transform is ran. * **New Feature** * Added back the 2.x optional runtime. ## 3.2.1 * **Bug Fix** * Fix block scoping transformer rewriting breaks and continues to inner labels. ## 3.2.0 * **Bug Fix** * Fixed scope tracking for default parameters IIFE. * Fixed block scoped functions. * Improved `bin/6to5` path resolution. * **New Feature** * You can now trigger super setters in classes. Thanks [@kruppel](https://github.com/kruppel)! * Add `resolveSourceMap` option. * Better support and output for block scoping loops with labels. ## 3.1.1 * **Polish** * Drop `enumerable: false` clause from class method definitions as `enumerable` already defaults to `false`. * **Bug Fix** * Properly transform `XJSIdentifier` nodes referencing `this` into a `ThisExpression`. ## 3.1.0 * **Breaking Change** * [Make class methods unenumerable](https://esdiscuss.org/topic/classes-and-enumerability#content-61). ## 3.0.16 * **Bug Fix** * Don't ignore dynamic import specifiers. * **Internal** * Upgrade `regenerator-6to5`. * **Polish** * Use `Object.assign` in place of extends helper if it exists. * Require individual `lodash` methods. Thanks [@stefanpenner](https://github.com/stefanpenner)! ## 3.0.15 * **Bug Fix** * Use `debug/node` instead of `debug` to avoid browserify using the browser version that references `window`. ## 3.0.14 * **New Feature** * Add `--optional` argument to `6to5-node`. * **Bug Fix** * Fix bug in `asyncToGenerator` helper where it was incorrectly calling generator iterator functions. ## 3.0.13 * **Bug Fix** * Fix modules loose mode using `modules` instead of `es6.modules`. ## 3.0.12 * **Internal** * Add internal debug messages. * **Bug Fix** * Add `noScope` option to `traverse.clearProperties`. ## 3.0.11 * **Bug Fix** * Fix `ast-types` `RestElement` definition. * Make `es6.forOf` loose mode more versatile and support destructuring. ## 3.0.10 * **Bug Fix** * In `types.getIds` make sure the `declaration` inside of `ExportDeclaration` is actually a `Declaration`. ## 3.0.9 * **Bug Fix** * Make `t.isReferenced` more powerful, actually take into consideration all contexts were identifier nodes aren't actually references. * Don't camelcase underscores when converting a string to a valid identifier. ## 3.0.8 * **Bug Fix** * Split up default function declaration exports due to regenerator destroying the parent export declaration. ## 3.0.7 * **Internal** * Upgrade `core-js` to `0.4.9`. * **Bug Fix** * Add id to function express scope tracking. ## 3.0.6 * **Bug Fix** * Fix block scope variable tracking stopping whenever it hits a new scope. * Fix block scope variable tracking breaking on all block statement scopes that have a for loop parent. ## 3.0.5 * **Internal** * More reliable default parameter scope. ## 3.0.4 * **Bug Fix** * Remove traversal stops from block scope tracking. ## 3.0.3 * **Internal** * Ignore options starting with `_`. ## 3.0.2 * **Internal** * Add common plugin options to valid options list. ## 3.0.1 * **Internal** * Downgrade `kexec` as `1.1.0` throws compilation errors. ## 3.0.0 * **Polish** * Generated code autoindentation. * Moved global uid registry to a scope registry resulting in nicer uids. * `this` is now illegal in the top level scope when using the default `useStrict` transformer. * New `asyncToGenerator` helper that's much more compact. * Throw errors on unknown options. * More reliable default parameter scope. * Helpers are now compact and have no newlines. * **Internal** * Rewritten a lot of the internals to much simpler. * Removed TDZ from default parameters as it was very wonky and unreliable. * Upgrade `core-js` to `0.4.6`. * Upgrade `acorn-6to5`. * JSX support is now on-par with react-tools/esprima. * Shorthand destructuring. * **Bug Fix** * Generators now work flawlessly with any parameter transformers. * Optional async function transformers should not name their functions. * Remove `unlink` event watching in `bin/6to5`. * Fix regenerator variable declarations being incorrectly hoisted breaking scope. * Transformers that attempted to simplify expressions that had no consequence now take into account whether it's one of the last statements/expressions in the script. * **New Feature** * New `selfContained` transformer. * New `undeclaredVariableCheck` optional transformer. * Added `--blacklist` and `--whitelist` options to `6to5-node`. * **Breaking Change** * Caching is now always enabled for the require hook. It also now no longer caches require resolutions. * Bare `super();` only works inside of constructors. * Removed the optional runtime in favor of the `selfContained` transformer. * This shorthand has been removed from the playground. * `6to5/polyfill` can now only be required **once**. * **CLI** * `--indent` option has been removed. * `--include-regenerator` option has been removed. * `--amd-modules-id` option has been removed, use `--module-ids` instead. * **Options** * `amdModuleIds` option has been removed, use `moduleIds` instead. * `includeRegenerator` has been removed. * `ignoreRegex` fallback has now been dropped from the require hook. `register(/foo/);`, `register({ ignoreRegex: /foo/ })` -> `register({ ignore: /foo/ })`. * **Modules** * Module interop now only collapses to `module.exports` when there's a **single** export that's default. * Imports and exports are now illegal anywhere except the root level by default. Set `modules` to [loose mode](http://6to5.org/docs/usage/loose) to allow them everywhere. * **Transformers** * Optional fast transformer backwards compatibility support has been removed. Use [loose mode](https://6to5.org/docs/usage/loose). * Removed the `coreAliasing` transformer in favor of `selfContained`. * Renamed transformers: * `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.objectSpread` * `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.blockScoping` * `blockScopingTDZ` -> `es6.blockScopingTDZ` * `generators` -> `regenerator` * `protoToAssign` -> `spec.protoToAssign` * `typeofSymbol` -> `spec.typeofSymbol` * `coreAliasing` -> `selfContained` * `undefinedToVoid` -> `spec.undefinedToVoid` * `undeclaredVariableCheck` -> `validation.undeclaredVariableCheck` * `specPropertyLiterals` -> `minification.propertyLiterals` * `specMemberExpressionLiterals` -> `minification.memberExpressionLiterals` ## 2.13.7 * **Bug Fix** * Don't realias variables that are already declared in optional `coreAliasing` transformer. ## 2.13.6 * **Bug Fix** * Add `NewExpression` as a valid parent for parentheses insertion for `ConditionalExpression`. ## 2.13.5 * **Bug Fix** * Allow rest parameters to be destructuring patterns. * **Internal** * Upgrade `kexec` to `1.1.0`. ## 2.13.4 * **Bug Fix** * Fix ordering of destructuring and default params. * Fix loop body scope. * Fix `for...of` transformation not retaining it's scope. * Add destructuring assignment support to scope tracking. * **Polish** * More reliable newlines for pretty printing variable declarations. ## 2.13.3 * **Internal** * Add `coverage` and `vendor` to npmignore. ## 2.13.2 * **Bug Fix** * Fix `super` inside of nested functions. * **Internal** * Move let scoping TDZ into a separate transformer until it's more solid. * Use `process.stdin.write` instead of `console.log` in `bin` to avoid sprintfification. ## 2.13.1 * **New Feature** * Temporal dead zone for block binding. ## 2.13.0 * **New Feature** * Block scoped functions. * Add `--loose all` option. * Add playground mallet operator thanks to [@jridgewell](https://github.com/jridgewell). * **Bug Fix** * Rewrote large parts of the let scoping transformer. Now passes all known tests. * **Internal** * Even more optimisations thanks to the awesome [@gaearon](https://github.com/gaearon). * Upgrade `acorn-6to5`. * Fixes exponentation operator thanks to [@charliesome](https://github.com/charliesome). * Fix flow optional parameters with types. * Upgrade `chokidar` to `0.12.6`. * Upgrade `commander` to `2.6.0`. * Upgrade `core-js` to `0.4.5`. * Upgrade `estraverse` to `1.9.1`. * Upgrade `jshint` to `2.5.11`. * Upgrade `regenerator` to `0.8.9`. * Upgrade `regexpu` to `1.0.0`. * Upgrade `source-map` to `0.1.43`. * Upgrade `source-map-support` to `0.2.9`. * Upgrade `browserify` to `8.1.1`. * Upgrade `chai` to `1.10.0`. * Upgrade `istanbul` to `0.3.5`. * Upgrade `mocha` to `2.1.0`. * Upgrade `uglify-js` to `2.4.16`. ## 2.12.6 * **Bug Fix** * Add missing flow type traversal keys. ## 2.12.5 * **Internal** * Fix incorrect `for...in` loop still causing `ember-script` issues. ## 2.12.4 * **Polish** * Rest parameters now allocate the array before populating. * **Internal** * `for...in` loops have been changed to optimized `for` loops - better performance and no enumeration of protoype keys. * Parts of the code generator have now been optimized thanks to [gaearon](https://github.com/gaearon). ## 2.12.3 * **Spec Compliancy** * Optional `typeof` transformer checks for `undefined` before passing it to the helper. * Class methods are now named. ## 2.12.2 * **Internal** * Exclude nodes in function parameters and catch clauses from `isReferenced` check. ## 2.12.1 * **Internal** * Add `.jsx` to list of allowed extensions. ## 2.12.0 * **Bug Fix** * Support non-string JSX literals. * **New Feature** * Loose mode for some transformers that enables non-spec behavior. * **Internal** * Uglify `--mangle sort` has been added to the build script, cutting minified scripts in half. ## 2.11.4 * **Internal** * Make all dependency versions fixed. ## 2.11.3 * **Bug Fix** * Allow a string to be passed as the `optional` option. ## 2.11.2 * **Bug Fix** * Support esprima-style catch clause handlers. * **Polish** * Don't print a stacktrace for syntax errors in the CLI. ## 2.11.1 * **Bug Fix** * Remove stray `console.log` outputting debug code. * Remove `Dict` from `coreAliasing`. ## 2.11.0 * **Bug Fix** * Fix unnecessary IIFE in default parameters on method calls. * Add support for supers inside of closures. * **New Feature** * Add `--keep-module-id-extensions`/`keepModuleIdExtensions` option to keep extensions in module ids. * **Polish** * Special case single argument spread properties in `super` inside classes. * Don't use a variable declaration for class declaration IFFE. * Rename `inherits` helper parameters. * `coreAliasing` transformer now aliases `Promise`, `Set`, `Map` and more. Thanks [@AluisioASG](https://github.com/AluisioASG). ## 2.10.1 * **Internal** * Upgrade `core-js` to `0.4.4`. * **New Feature** * Added `--include-regenerator` option to CLI and `includeRegenerator` option to API that includes the regenerator runtime if necessary. ## 2.10.0 * **New Feature** * Add `classesFastSuper` optional transformer that doesn't support parent getters and prototype changing. * Add `forOfFast` transformer that speeds up `for...of` on arrays but produces more code. * Add `--react-compat` to `bin/6to5`. * **Spec Compliancy** * Disallow setters without a single parameter. * Add `configurable` and `writable` to defined properties. * Use define instead of assignment for class methods. * **Polish** * Fix bin name in `6to5-node --help`. * Fix shorthand `--whitelist` name in `bin/6to5`. * **Internal** * Hot code optimisation of traversal etc thanks to [gaearon](https://github.com/gaearon). ## 2.9.4 * **Bug Fix** * Support `UpdateExpression`s as `MemberExpression` objects. ## 2.9.3 * **Bug Fix** * Remove `exportsWildcard` helper in favor of `defaults`. ## 2.9.2 * **Bug Fix** * Pass `exports` to `exportWildcard` helper to allow for use inside the optional runtime. ## 2.9.1 * **Bug Fix** * Fix runtime generator breaking the helper inclusion loop. ## 2.9.0 * **Internal** * Upgrade `acorn-6to5`. * Now supports destructuring shorthand properties. ## 2.8.1 * **Bug Fix** * Fix computed accessors on object literals. ## 2.8.0 * **New Feature** * Add `commonStrict`, `amdStrict` and `umdStrict` module formatters that remove `module.exports` interop assignment. * Add `--indent` option to the 6to5 CLI. ## 2.7.4 * **Polish** * Inherit assignments from their declaration in destructuring. * Properly align multi-declarator variable declarations. ## 2.7.3 * **Polish** * Indent and add newlines to `React.createElement` calls in `react` transformer. * Remove `Object.assign` calls and replace it with an `extends` helper. ## 2.7.1 * **New Feature** * Expose `version` on browser and node API. * **Internal** * Upgrade `core-js` to 0.4.1 ## 2.7.0 * **Spec Compliancy** * Disallow reassignments of imports. * **New Feature** * `reactCompat` option to enable pre-v0.12 react components. ## 2.6.3 * **Bug Fix** * Fix 2.6.0 regression caused by faulty export default from a source handling. ## 2.6.2 * **Bug Fix** * Fix rest parameter keys when on functions with params. ## 2.6.1 * **Bug Fix** * Fix rest parameter arguments key. ## 2.6.0 * **Bug Fix** * Better handling of number literal property keys. * Handle `NewExpression` paren insertion edegcases better. * **Internal** * Fix incorrect AST node `identifier("this")`. * Better `toIdentifier` method that handles reserved words. * Upgrade `acorn-6to5`. * Fix exponentiation operator precedence. * Fix line terminators after async contextual keywords. * Add semicolons as class elements inside of a class body. * Upgrade to `core-js` 4.0.0. * Upgrade to `regenerator` 0.8.3. * Fix non-loop labeled statements. * **New Feature** * Basic destructuring defaults * Add `.es` to list of supported extensions. * Add optional `typeofSymbol` transformer. * Use a `for` loop for rest parameters instead of `Array.prototype.slice`. * **Polish** * Move `"use strict";` to inside module bodies instead of at the top of the file. * Better handling of dynamic imports. * **Spec Compliancy** * Class inheritance now has a `function` or `null` type check. * Add `interopRequireWildcard` around wildcard imports and exports to handle non-object exports. ## 2.5.0 * Remove `noDuplicateProperties` transformer. * Better generated UIDs based on nodes. * Default parameters now use `arguments[i]`, conditionals and variable declarations instead of using long-form if statements. ## 2.4.10 * Upgrade `acorn-6to5`. ## 2.4.9 * Upgrade `acorn-6to5`. * Add optional `protoToAssign` transformer. * Fix missing properties from computed property keys. * Make ES7 comprehensions `let` variables. ## 2.4.8 * Make `require("6to5/register")` work with browserify - [#370](https://github.com/6to5/6to5/pull/370). Thanks [@hughsk](https://github.com/hughsk)! ## 2.4.7 * Upgrade `acorn-6to5`. ## 2.4.6 * Move `coreAliasing` and `undefinedToVoid` transformers down to catch `moduleFormatter` transforms. ## 2.4.5 * Avoid printing comments if they've already been output. ## 2.4.4 * Add `module` type to browser build `