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# Changelog
## v1.1.8 (2017-01-10)
### :bug: Bug Fix
- debug: Transformations before logs. ([#128](https://github.com/babel/babel-preset-env/pull/128)) (@yavorsky)
Makes sure that all transformations on `targets` (such as `exclude`/`include`) are run before logging out with the `debug` option. Fixes ([#127](https://github.com/babel/babel-preset-env/issues/127)))
### :house: Internal
- remove unnecessary extension. ([#131](https://github.com/babel/babel-preset-env/pull/131)) (@roman-yakobnyuk)
- Include yarn.lock and update CI. ([#124](https://github.com/babel/babel-preset-env/pull/124)) (@existentialism)
## v1.1.7 (2017-01-09)
Had a publishing issue in the previous release.
## v1.1.6 (2017-01-06)
### :bug: Bug Fix
- Explicitly resolve lowest browser version. ([#121](https://github.com/babel/babel-preset-env/pull/121)) (@brokenmass)
```js
{
"targets": {
"browsers": ["ios >= 6"] // was resolving to {ios: 10} rather than {ios: 6}
}
}
```
## v1.1.5 (2017-01-04)
### :bug: Bug Fix
- Show error if target version is not a number. ([#107](https://github.com/babel/babel-preset-env/pull/107)) (@existentialism)
```js
{
"presets": [
["env", {
"targets": {
"chrome": "52", // will error since it's not a number,
"chrome": 52 // correct!
}
}]
]
}
```
- Fix targets for the `debug` option. ([#109](https://github.com/babel/babel-preset-env/pull/109)) (@yavorsky)
Now it prints the transformed targets/environments rather than the browsers query.
```txt
Using targets:
{
"chrome": 53,
"ie": 10,
"node": 6
}
Modules transform: false
Using plugins:
transform-es2015-arrow-functions {"chrome":47,"node":6}
transform-es2015-block-scoped-functions {"chrome":41,"ie":11,"node":4}
Using polyfills:
es6.typed.uint8-clamped-array {"chrome":5,"node":0.12}
es6.map {"chrome":51,"node":6.5}
```
## v1.1.4 (2016-12-16)
v1.1.2-v1.1.4
### :bug: Bug Fix
The new `exclude`/`include` options weren't working correctly for built-ins. ([#102](https://github.com/babel/babel-preset-env/pull/102)).
Also fixes an issue with debug option.
## v1.1.1 (2016-12-13)
### :bug: Bug Fix
Regression with the previous release due to using `Object.values` (ES2017). This wasn't caught because we are using babel-register to run tests and includes polyfills so it didn't fail on CI even though we have Node 0.10 as an env. Looking into fixing this to prevent future issues.
## v1.1.0 (2016-12-13)
### :rocket: New Feature
- Add `exclude` option, rename `whitelist` to `include` ([#89](https://github.com/babel/babel-preset-env/pull/89)) (@hzoo)
Example:
```js
{
"presets": [
["env", {
"targets": {
"browsers": ["last 2 versions", "safari >= 7"]
},
"include": ["transform-es2015-arrow-functions"],
"exclude": [
"transform-regenerator",
"transform-async-to-generator",
"map"
],
"useBuiltIns": true
}]
]
}
```
`"exclude": ["transform-regenerator"]` doesn't transform generators and removes `regeneratorRuntime` from being imported.
`"exclude": ["transform-async-to-generator"]` doesn't use the built-in async-to-gen transform so you can use something like [fast-async](https://github.com/MatAtBread/fast-async).
`"exclude": ["map"]` doesn't include the `Map` polyfill if you know you aren't using it in your code (w/ `useBuiltIns`). (We will figure out a way to automatically do this [#84](https://github.com/babel/babel-preset-env/issues/84)).
If you pass a wrong plugin it will error: valid options for `include/exclude` are in [/data/plugin-features.js](https://github.com/babel/babel-preset-env/blob/master/data/plugin-features.js) and [/data/built-in-features.js](https://github.com/babel/babel-preset-env/blob/master/data/built-in-features.js) (without the `es6.`)
### :house: Internal
- Optimize result filtration. ([#77](https://github.com/babel/babel-preset-env/pull/77)) (@yavorsky)
- Update eslint config to align with other babel projects ([#79](https://github.com/babel/babel-preset-env/pull/79)) (@baer)
- Update pathnames to avoid uppercase ([#80](https://github.com/babel/babel-preset-env/pull/80)) (@baer)
- Refactor build data for clarity/consistency ([#81](https://github.com/babel/babel-preset-env/pull/81)) (@baer)
- Update linting rules to cover all js ([#82](https://github.com/babel/babel-preset-env/pull/82)) (@baer)
- Cleanup lib before rebuilding ([#87](https://github.com/babel/babel-preset-env/pull/87)) (@baer)
- Move linting dependency to be dev only ([#88](https://github.com/babel/babel-preset-env/pull/88)) (@baer)
### :memo: Documentation
- Fix typo ([#78](https://github.com/babel/babel-preset-env/pull/78)) (@rohmanhm)
- Fix PR link in changelog. ([#75](https://github.com/babel/babel-preset-env/pull/75)) (@nhajidin)
## v1.0.2 (2016-12-10)
### :bug: Bug Fix
* Fix issue with Object.getOwnPropertySymbols ([#71](https://github.com/babel/babel-preset-env/pull/71)) ([@existentialism](https://github.com/existentialism))
Was requiring the wrong module kinda of like in v1.0.1:
https://github.com/zloirock/core-js#ecmascript-6-symbol
```diff
-import "core-js/modules/es6.object.get-own-property-symbols";
```
The test is just a part of `Symbol`.
## v1.0.1 (2016-12-10)
### :bug: Bug Fix
* Fix regenerator import ([#68](https://github.com/babel/babel-preset-env/pull/68)) ([@hzoo](https://github.com/hzoo))
We were outputting an invalid path for `regenerator`!
```diff
+import "regenerator-runtime/runtime";
-import "core-js/modules/regenerator-runtime/runtime"-
```
## v1.0.0 (2016-12-09)
### :rocket: New Feature
* Add `useBuiltIns` option ([#56](https://github.com/babel/babel-preset-env/pull/56)) ([@hzoo](https://github.com/hzoo)), ([@yavorsky](https://github.com/yavorsky)), ([@existentialism](https://github.com/existentialism))
A way to apply `babel-preset-env` for polyfills (via `"babel-polyfill"``).
> This option will apply a new Babel plugin that replaces `require("babel-polyfill")` with the individual requires for `babel-polyfill` based on the target environments.
Install
```
npm install babel-polyfill --save
```
In
```js
import "babel-polyfill"; // create an entry js file that contains this
// or
import "core-js";
```
Out (different based on environment)
```js
// chrome 55
import "core-js/modules/es7.string.pad-start"; // haha left_pad
import "core-js/modules/es7.string.pad-end";
import "core-js/modules/web.timers";
import "core-js/modules/web.immediate";
import "core-js/modules/web.dom.iterable";
```
`.babelrc` Usage
```js
{
"presets": [
["env", {
"targets": {
"electron": 1.4
},
"modules": false, // webpack 2
"useBuiltIns": true // new option
}]
]
}
```
> Also looking to make an easier integration point via Webpack with this method. Please reach out if you have ideas!
---
* Support [Electron](http://electron.atom.io/) ([#55](https://github.com/babel/babel-preset-env/pull/55)) ([@paulcbetts](https://github.com/paulcbetts))
Electron is also an environment, so [Paul went ahead](https://twitter.com/paulcbetts/status/804507070103851008) and added support for this!
`.babelrc` Usage
```js
{
"presets": [ ["env", {"targets": { "electron": 1.4 }}]]
}
```
> Currently we are manually updating the data in [/data/electron-to-chromium.js](https://github.com/babel/babel-preset-env/blob/master/data/electron-to-chromium.js), but [@kevinsawicki](https://github.com/kevinsawicki) says we could generate the data from [atom-shell/dist/index.json](https://gh-contractor-zcbenz.s3.amazonaws.com/atom-shell/dist/index.json) as well! (Someone should make a PR :smile:)
## v0.0.9 (2016-11-24)
### :rocket: New Feature
* Support Opera ([#48](https://github.com/babel/babel-preset-env/pull/48)) (Henry Zhu)
Was as simple as modifying the chrome version and subtracting 13! (so chrome 54 = opera 41)
```js
{
"presets": [
["env", {
"targets": {
"opera": 41
}
}]
]
}
```
## v0.0.8 (2016-11-16)
### :nail_care: Polish
* Only print the debug info once ([#46](https://github.com/babel/babel-preset-env/pull/46) (Henry Zhu)
When using the `debug` option it was printing the data for each file processed rather than once.
```js
{
"presets": [
["env", {
"debug": true
}]
]
}
```
## v0.0.7 (2016-11-02)
### :rocket: New Feature
* hardcode a current node version option ([#35](https://github.com/babel/babel-preset-env/pull/35)) (Henry Zhu)
```js
{
"presets": [
["env", {
"targets": {
"node": "current" // parseFloat(process.versions.node)
}
}]
]
}
```
* add 'whitelist' option ([#31](https://github.com/babel/babel-preset-env/pull/31)) (Henry Zhu)
```js
{
"presets": [
["env", {
"targets": {
"chrome": 52
},
"whitelist": ["transform-es2015-arrow-functions"]
}]
]
}
```
* Add more aliases (Henry Zhu)
* Update plugin data: firefox 52 supports async/await! ([#29](https://github.com/babel/babel-preset-env/pull/29)) (Henry Zhu)
### :bug: Bug Fixes
* Use compat-table equals option ([#36](https://github.com/babel/babel-preset-env/pull/36)) (Henry Zhu)
Compute and use `compat-table` equivalents
```js
{
"safari6": "phantom",
"chrome44": "iojs",
"chrome50": "node64",
"chrome51": "node65",
"chrome54": "node7",
"chrome30": "android44",
"chrome37": "android50",
"chrome39": "android51",
"safari7": "ios7",
"safari71_8": "ios8",
"safari9": "ios9",
"safari10": "ios10",
"chrome50": "node6"
}
```
* Change default behavior to act the same as babel-preset-latest ([#33](https://github.com/babel/babel-preset-env/pull/33)) (Henry Zhu)
```js
{ "presets": ["env"] } // should act the same as babel-preset-latest
```
## Internal
* Add fixture helper for tests ([#28](https://github.com/babel/babel-preset-env/pull/28)) (Henry Zhu)