babel-core/CHANGELOG.md

Turn ES6 code into readable vanilla ES5 with source maps

# Changelog

> **Tags:**
> - [New Feature]
> - [Bug Fix]
> - [Spec Compliancy]
> - [Breaking Change]
> - [Documentation]
> - [Internal]
> - [Polish]

_Note: Gaps between patch versions are faulty/broken releases._

See [CHANGELOG - 6to5](CHANGELOG-6to5.md) for the pre-4.0.0 version changelog.

## 4.2.1

 * **Polish**
  * Add auxiliary comment to let scoping closure flow control.

## 4.2.0

 * **Polish**
  * Use an assignment instead of a define for `__esModule` in loose mode.
 * **Internal**
  * Add error for `eval();` usage and enable strict mode for parsing.

## 4.1.0

 * **New Feature**
  * Add `BABEL_CACHE_PATH` and `BABEL_DISABLE_CACHE` environment variables.
 * **Internal**
  * Replace many internal util functions with modules. Thanks [@sindresorhus](https://github.com/sindresorhus)!

## 4.0.2

 * **Bug Fix**
  * Fix generators not properly propagating their internal declarations.
 * **Polish**
  * Update setter param length error message.
  * Use ranges on dependencies.

## 4.0.0

 * 6to5 is now known as Babel.
 * Global helpers/runtime has now been given the more descriptive name of "external helpers".