320 lines
8.7 KiB
Markdown
320 lines
8.7 KiB
Markdown
# Changelog
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Gaps between patch versions are faulty/broken releases.
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## 2.0.0
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* Make string literal generation only escapes unicode that it has to.
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* Internal code generation format options have been exposed.
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* Change playground method binding operator from `:` to `#` removing ambiguous syntax with terns.
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* Fix rest parameters in async and generator functions.
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* Export/import declarations replace by the modules transformer now inherit comments.
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* Added playground flag to `6to5-node`.
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* `6to5-node` now behaves the same as `node`.
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* `6to5-node` now uses `kexec` to become the forked process to correctly propagate signals on unix.
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* Constants are now block scoped.
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* Exposed ast transformer.
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* Merged `commonInterop` and `common` module formatters.
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* Fix generator comprehensions not inheriting `arguments`, `this` etc.
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* Object and class mutator shorthand are now enumerable.
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* Remove regenerator `Generator has already finished` error which isn't spec-compliant.
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* Expose internal `spec` transformers that nicen up code output.
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* Add export variable declaration default initializers.
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* Propagate export declaration reassignments.
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* Add initializer default to block scoped variable declarations within a loop.
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* Flow type support.
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* Make async/await contextual keywords.
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* Allow `yield`ing of non-objects.
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* Class declarations now lack an IIFE.
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* Support falsy and `null` super classes.
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* Add support for experimental abstract references `private` declarations.
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* Leave out IIFE for class declarations.
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* Switched to [core-js](https://github.com/zloirock/core-js) over [es6-symbol](https://github.com/medikoo/es6-symbol) and [es6-shim](https://github.com/paulmillr/es6-shim/).
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* `amd` and `umd` module formatters now behave the same as `common` with `interopRequire`.
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* Micro-optimizations to boost performance by 200%.
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* Rename module formatter methods `import` to `importDeclaration` and `export` to `exportDeclaration`.
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* Support multiple declarators in export variable declarations.
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* Freeze tagged template literal object.
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* Remove inlined `regenerator` fork.
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* Remove `ParenthesizedExpression`.
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* Rename `object-spread` helper to `object-without-properties`.
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* Rename `class-props` helper to `prototype-properties`.
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* Rename `extends` helper to `inherits`.
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## 1.15.0
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* Don't alias `GeneratorFunction` and check the name which causes minifiers to remove the name and throw an error later on when we check if it's set.
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## 1.14.18
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* Fix files only containg comments not being output.
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* Fix duplicate comments on property key shorthands.
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## 1.14.17
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* Add default initializer to let variables within loop bodies.
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* Fix excessive `break` replacement inside of switches in let scoping.
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## 1.14.16
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* Add object getter memos and this shorthand to playground.
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* Fix while loops in let scoping.
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* Upgrade `acorn-6to5`.
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## 1.14.14
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* Fix template literals escaping.
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## 1.14.13
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* Fix let scoping of `while` loops.
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* Make class methods enumerable.
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## 1.14.12
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* Fix duplicate dynamic expressions in call spread.
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## 1.14.10
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* Fix let scoping unneccesary override.
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## 1.14.6
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* Avoid ensuring a block on non-array node replacements.
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## 1.14.5
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* Upgrade `acorn-6to5`.
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* Fix JSON recursion error for unknown code generator node types.
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* Ensure that a statement is a block on block/statement types when replacing them with multiple nodes.
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## 1.14.4
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* Merge pretzel maps and method binding.
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## 1.14.3
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* Add playground pretzel maps.
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## 1.14.2
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* Fix `commonInterop` default export handling.
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* Fix keyworded property key identifiers being turned into computed property key literals.
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## 1.14.1
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* Inherit comments from `ClassDeclaration`.
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## 1.14.0
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* Add [playground](https://6to5.github.io/playground.html).
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## 1.13.13
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* Fix `--debug` in `bin/6to5-node`. Thanks [@timoxley](https://github.com/timoxley).
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## 1.13.12
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* Ignore `XJSEmptyExpression`s in `react` transformer output.
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## 1.13.11
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* Fix `util.regexify` on falsy values.
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* Fix `_aliasFunction` with rest parameters.
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* Export as `module.exports` instead of `exports.default` if there are no other `ExportDeclaration`s in `commonInterop` module formatter.
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* Add `system` module formatter. Thanks [@douglasduteil](https://github.com/douglasduteil).
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## 1.13.10
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* Add support for `AssignmentExpression` destructuring outside of `ExpressionStatement`.
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## 1.13.9
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* Fix `VirtualPropertyExpression` visitor keys.
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## 1.13.8
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* Only use a single reference in abstract references.
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## 1.13.7
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* Upgrade `acorn-6to5`.
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* Add experimental exponentiation operator support.
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## 1.13.6
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* Fix experimental object spread/rest helper.
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## 1.13.5
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* Upgrade `acorn-6to5`.
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* Add experimental support for object spread/rest.
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* Change `arguments` to array to an additional helper method.
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## 1.13.4
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* Fix single spread element returning itself.
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## 1.13.3
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* Upgrade `acorn-6to5`.
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* Add experimental support for abstract references.
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## 1.13.2
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* Optimise `Array.from` usage by adding a helper method.
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* Upgrade `acorn-6to5`.
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## 1.13.1
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* Fix constructor spread optimisation. Thanks [@zloirock](https://github.com/zloirock).
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## 1.13.0
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* Put experimental ES7 features behind a flag `--experimental` and `experimental` option.
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* Constructor spread performance increase. Thanks [@RReverser](https://github.com/RReverser).
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* Use `self` instead of `window` in the optional 6to5 runtime. Thanks [@RReverser](https://github.com/RReverser).
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## 1.12.26
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* Support computed property destructuring.
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## 1.12.25
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* Update `acorn-6to5`, `ast-types`, `es6-shim`, `chokidar`, `estraverse` and `private`.
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## 1.12.24
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* Collect references that haven't been declared in scope.
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## 1.12.23
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* Fix generator function export hoisting.
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## 1.12.22
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* Update `fs-readdir-recursive` and `chokidar`.
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* Support array destructuring on iterables.
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* Make amd module id optional. Thanks [@webpro](https://github.com/webpro).
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## 1.12.21
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* Fix unneccesary let scoping replacement.
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* Add `commonInterop` module formatter. Thanks [@Naddiseo](https://github.com/Naddiseo).
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* Fix `return` outside of function body bug. Thanks [@brentburg](https://github.com/brentburg).
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* Add more flexible option types.
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## 1.12.20
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* Append `sourceMappingURL` when using `bin/6to5` and output sourcemaps.
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## 1.12.19
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* Add `comments` option and `--remove-comments` flag. Thanks [@webpro](htps://github.com/webpro).
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* Embed `regenerator`.
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## 1.12.18
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* Use `global` reference instead of `window`.
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## 1.12.17
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* Add `moduleName`, `sourceRoot` and `filenameRelative` options. Thanks [@darvelo](https://github.com/darvelo).
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* Traversal optimisations.
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## 1.12.16
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* Fix comments not being retained from `MethodDefinition` in classes.
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* Add temporal dead zone in default parameters.
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## 1.12.15
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* Update `acorn-6to5`.
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## 1.12.14
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* Fix duplicate let scoping in functions.
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* Make JSX whitespace more React-compliant.
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* Add `_memberExpressionKeywords` transformer that turns keyword identifiers to computed literals.
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* Upgrade `regenerator-6to5`.
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## 1.12.13
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* Support duplicate constants within different block scopes.
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* Fix for-head duplication testing and replacement.
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* Support `raw` property on tagged template literals.
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## 1.12.12
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* Make scope tracker more reliable to handle all edgecases.
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## 1.12.11
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* Block scope classes.
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* Fix generation of integer `Literal`s in `MemberExpression`.
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## 1.12.10
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* Fix let scoping var hoisting.
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## 1.12.9
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* Escape unicode characters when generating string `Literal`s.
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* Fix semicolons being output for statements in `ExportDeclaration`.
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* Fix `WithStatement` missing parenthesis.
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## 1.12.8
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* Temporarily forbid `AssignmentExpression` destructuring outside of `ExpressionStatement`.
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## 1.12.7
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* Update to latest `acorn-6to5`.
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## 1.12.6
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* Update to latest `acorn-6to5`.
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## 1.12.5
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* Fix excessive whitespace trimming resulting in innaccurate sourcemap line.
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## 1.12.4
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* Add `doc` folder for documentation.
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## 1.12.3
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* Support generator comprehensions.
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* Use `Array.from` instead of `Array.prototype.slice` in spread transformer.
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* Support spread in `NewExpression`s.
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## 1.12.2
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* Upgrade `matcha` to `0.6.0` and `browserify` to `6.3.2`.
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* Add own `trimRight` helper instead of relying on the string instance method.
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* Support JSX spreads that aren't the first.
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## 1.12.1
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* Fix `this` and `arguments` mapping in the `_aliasFunctions` transformer.
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## 1.12.0
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* Combine `jsx` and `react` transformers to `react`.
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* Update `react` syntax output to React v0.12.
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## 1.11.15
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* Fix JSX literal whitespace generation.
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## 1.11.14
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* Avoid using a switch for let-scoping continue and break statements and use an if statement instead.
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* Remove excess whitespace and newlines from JSX literals.
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## 1.11.13
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* Update regenerator-6to5
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* Add support for most escodegen formatting options
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