# Change Log

All notable changes to this project will be documented in this file.
This project adheres to [Semantic Versioning](http://semver.org/).

## 8.5.0 - 2016-10-25

- Update ESLint from 3.7.x to 3.8.x.
- 2 additional rules are now fixable with `standard --fix`!

## 8.4.0 - 2016-10-10

- Update ESLint from 3.6.x to 3.7.x.
- 5 additional rules are now fixable with `standard --fix`!
- Use more conservative semver ranges [#654](https://github.com/feross/standard/issues/654)

## 8.3.0 - 2016-09-29

The last release (`8.2.0`) added ES7 support. This release (`8.3.0`) adds ES8
support ...just 3 days later!

This release should eliminate the need to specify `babel-eslint` as a custom
parser, since `standard` can now parse ES8 (i.e. ES2017) syntax out of the box.
That means `async` and `await` will just work.

- Support ES8 (i.e. ES2017) syntax.

## 8.2.0 - 2016-09-26

For many users, this release should eliminate the need to specify `babel-eslint` as
a custom parser, since `standard` can now parse ES7 (i.e. ES2016) syntax out of the
box.

- Support ES7 (i.e. ES2016) syntax.
- Update ESLint from 3.5.x to 3.6.x.
- 4 additional rules are now fixable with `standard --fix`!

## 8.1.0 - 2016-09-17

- Update ESLint from 3.3.x to 3.5.x.
- Around 10 additional rules are now fixable with `standard --fix`!

## 8.0.0 - 2016-08-23

This release contains a bunch of goodies, including new rules that catch potential
programmer errors (i.e. bugs) and enforce additional code consistency.

However, the best feature is surely the new `--fix` command line flag to
automatically fix problems. If you ever used
[`standard-format`](https://www.npmjs.com/package/standard-format)
and ran into issues with the lack of ES2015+ support, you'll be happy about
`--fix`.

`standard --fix` is built into `standard` v8.0.0 for maximum convenience, it
supports ES2015, and it's lightweight (no additional dependencies since it's part
of ESLint which powers `standard`). Lots of problems are already fixable, and more
are getting added with each ESLint release.

`standard` also outputs a message ("Run `standard --fix` to automatically fix
some problems.") when it detects problems that can be fixed automatically so you
can save time!

With `standard` v8.0.0, we are also dropping support for Node.js versions prior to
v4. Node.js 0.10 and 0.12 are in maintenance mode and will be unsupported at the
end of 2016. Node.js 4 is the current LTS version. If you are using an older
version of Node.js, we recommend upgrading to at least Node.js 4 as soon as
possible. If you are unable to upgrade to Node.js 4 or higher, then we recommend
continuing to use `standard` v7.x until you are ready to upgrade Node.js.

**Important:** We will not be updating the `standard` v7.x versions going forward.
All bug fixes and enhancements will land in `standard` v8.x.

Full changelog below. Cheers!

### New features

- Upgrade to ESLint v3 (http://eslint.org/docs/user-guide/migrating-to-3.0.0) [#565](https://github.com/feross/standard/pull/565)
  - **BREAKING:** Drop support for node < 4 (this was a decision made by the ESLint team)
- Expose ESLint's `--fix` command line flag [#540](https://github.com/feross/standard/issues/540) [standard-engine/#107](https://github.com/Flet/standard-engine/issues/107)
  - Lightweight, no additional dependencies, fixes dozens of rules automatically

### New rules

*(Estimated % of affected standard users, based on test suite in parens)*

- Enforce placing object properties on separate lines ([object-property-newline](http://eslint.org/docs/rules/object-property-newline)) [#524](https://github.com/feross/standard/issues/524) (2%)
- Require block comments to be balanced ([spaced-comment "balanced"](http://eslint.org/docs/rules/spaced-comment)) [#572](https://github.com/feross/standard/issues/572) (2%)
- Disallow constant expressions in conditions ([no-constant-condition](http://eslint.org/docs/rules/no-constant-condition)) [#563](https://github.com/feross/standard/issues/563) (1%)
- Disallow renaming import, export, and destructured assignments to the same name ([no-useless-rename](http://eslint.org/docs/rules/no-useless-rename)) [#537](https://github.com/feross/standard/issues/537) (0%)
- Disallow spacing between rest and spread operators and their expressions ([rest-spread-spacing](http://eslint.org/docs/rules/rest-spread-spacing)) [#567](https://github.com/feross/standard/issues/567) (0%)
- Disallow the Unicode Byte Order Mark (BOM) ([unicode-bom](http://eslint.org/docs/rules/unicode-bom)) [#538](https://github.com/feross/standard/issues/538) (0%)
- Disallow assignment to native objects/global variables ([no-global-assign](http://eslint.org/docs/rules/no-global-assign)) [#596](https://github.com/feross/standard/issues/596) (0%)
- Disallow negating the left operand of relational operators ([no-unsafe-negation](http://eslint.org/docs/rules/no-unsafe-negation)) [#595](https://github.com/feross/standard/issues/595) (0%)
- Disallow template literal placeholder syntax in regular strings ([no-template-curly-in-string](http://eslint.org/docs/rules/no-template-curly-in-string)) [#594](https://github.com/feross/standard/issues/594) (0%)
- Disallow tabs in file ([no-tabs](http://eslint.org/docs/rules/no-tabs)) [#593](https://github.com/feross/standard/issues/593) (0%)

### Changed rules

- Relax rule: Allow template literal strings (backtick strings) to avoid escaping
 [#421](https://github.com/feross/standard/issues/421)
- Relax rule: Do not enforce spacing around * in generator functions (https://github.com/feross/standard/issues/564#issuecomment-234699126)
  - This is a temporary workaround for `babel` users who use async generator functions.

## 7.1.2 - 2016-06-03

- Fix install errors for some users by updating eslint peer dependency

## 7.1.1 - 2016-05-26

- Add back full node 0.10, 0.12 support

## 7.1.0 - 2016-05-16

- Upgrade eslint to version ~2.10.2

## 7.0.1 - 2016-05-04

- Relax "no-duplicate-imports" rule to not include `export` so the following is allowed:

```js
import { foo } from 'bar'
export * from 'bar'
```

## 7.0.0 - 2016-05-02

### Changes

- Upgrade eslint to version ~2.9.0
- Remove "rules" configuration option [#367](https://github.com/feross/standard/issues/367) from `package.json` (Reasoning is [here](https://github.com/feross/standard/issues/399#issuecomment-180961891))

### New rules

*Estimated % of affected standard users, based on test suite*

- Require camelCase ([camelcase](http://eslint.org/docs/rules/camelcase)) [4%]
- Disallow unnecessary escape usage ([no-useless-escape](http://eslint.org/docs/rules/no-useless-escape)) [4% -- but, including many bugs]
- Disallow duplicate imports ([no-duplicate-imports](http://eslint.org/docs/rules/no-duplicate-imports)) [0%]
- Disallow unmodified conditions of loops ([no-unmodified-loop-condition](http://eslint.org/docs/2.0.0/rules/no-unmodified-loop-condition)) [0%]
- Disallow whitespace before properties ([no-whitespace-before-property](http://eslint.org/docs/2.0.0/rules/no-whitespace-before-property)) [0%]
- Disallow control flow statements in `finally` blocks ([no-unsafe-finally](http://eslint.org/docs/rules/no-unsafe-finally)) [0%]
- Disallow unnecessary computed property keys on objects ([no-useless-computed-key](http://eslint.org/docs/rules/no-useless-computed-key)) [0%]
- Validate spacing before closing bracket in JSX ([react/jsx-space-before-closing](https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-space-before-closing.md)) [0%]

### Removed rules

- Require parens in arrow function arguments ([arrow-parens](http://eslint.org/docs/rules/arrow-parens))

## 6.0.8 - 2016-03-07

- Pin eslint to version ~2.2.0
- Update eslint-plugin-react to version 4.0.0

## 6.0.7 - 2016-02-18

- Revert: Use install location of standard as eslint `cwd` (fixes [#429](https://github.com/feross/standard/issues/429))

## 6.0.6 - 2016-02-18

- Use eslint 2.1.0
- Fix: Use install location of standard as eslint `cwd` (fixes [snazzy/#8](https://github.com/feross/snazzy/issues/8))

## 6.0.5 - 2016-02-12

- Use eslint 2.0.0 stable

## 6.0.4 - 2016-02-07

- Relax rule: Validate closing bracket location in JSX ([jsx-closing-bracket-location](https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-closing-bracket-location.md))

## 6.0.3 - 2016-02-06

- Fix "Error: Cannot find module 'eslint-config-standard-jsx'" with npm 2 (node 0.10, 0.12, 4)

## 6.0.2 - 2016-02-06

- Internal change: Remove .eslintrc file, and use inline config

## 6.0.1 - 2016-02-05

- Internal change: Move .eslintrc file to root folder

## 6.0.0 - 2016-02-05

The goal of this release is to make `standard` faster to install, and simpler to use.

### Remove `standard-format` ([#340](https://github.com/feross/standard/issues/340)) ([#397](https://github.com/feross/standard/issues/397))

- Eliminates 250 packages, and cuts install time in half!
- For npm 2, install time goes from 20 secs —> 10 secs.
- For npm 3, install time goes from 24 secs —> 12 secs.
- To continue using `standard-format`, just install it separately: `npm install -g standard-format`

### React-specific linting rules are removed ([#351](https://github.com/feross/standard/issues/351)) ([#367](https://github.com/feross/standard/issues/367)) ([eslint-config-standard-react/#13](https://github.com/feross/eslint-config-standard-react/pull/13))

- JSX is still supported, and it continues to be checked for style.
- There were only a few React-specific rules, but they made it extremely difficult for users of alternatives like `virtual-dom` or `deku`, and unecessarily tied `standard` to a single library.
- JSX rules come from `eslint-config-standard-jsx`. The `eslint-config-standard-react` dependency was removed.

### New Rules

*The percentage (%) of users that rule changes will effect, based on real-world testing of the top ~400 npm packages is denoted in brackets.*

- Disallow `__dirname`/`__filename` string concatenation ([#403](https://github.com/feross/standard/issues/403)) ([no-path-concat](http://eslint.org/docs/2.0.0/rules/no-path-concat)) [5%]
- Require parens in arrow function arguments
 ([#309](https://github.com/feross/standard/issues/309)) ([arrow-parens](http://eslint.org/docs/2.0.0/rules/arrow-parens.html)) [5%]
- Ensure that `new Promise()` is instantiated with the parameter names
`resolve`, `reject` ([#282](https://github.com/feross/standard/issues/282)) ([promise/param-names](https://github.com/xjamundx/eslint-plugin-promise#param-names)) [1%]
- Enforce Usage of Spacing in Template Strings ([template-curly-spacing](http://eslint.org/docs/2.0.0/rules/template-curly-spacing)) [1%]
- Template strings are only allowed when necessary, i.e. template string features are being used (eslint got stricter: https://github.com/eslint/eslint/issues/5147) [1%]
- Better dead code detection after conditional statements (eslint got stricter) [1%]
- Enforce spaces around `*` in `yield * something` ([#335](https://github.com/feross/standard/issues/335)) ([yield-star-spacing](http://eslint.org/docs/2.0.0/rules/yield-star-spacing)) [0%]
- Disallow labels on loops/switch statements too (made rule stricter) ([no-labels](http://eslint.org/docs/2.0.0/rules/no-labels.html)) [0%]
- Disallow unnecessary constructor ([no-useless-constructor](http://eslint.org/docs/2.0.0/rules/no-useless-constructor)) [0%]
- Disallow empty destructuring patterns ([no-empty-pattern](http://eslint.org/docs/2.0.0/rules/no-empty-pattern)) [0%]
- Disallow Symbol Constructor ([no-new-symbol](http://eslint.org/docs/2.0.0/rules/no-new-symbol)) [0%]
- Disallow Self Assignment ([no-self-assign](http://eslint.org/docs/2.0.0/rules/no-self-assign)) [0%]

### Removed Rules

- `parseInt()` radix rule because ES5 fixes this issue ([#384](https://github.com/feross/standard/issues/384))
 ([radix](http://eslint.org/docs/2.0.0/rules/radix.html)) [0%]

### Expose eslint configuration via command line options and `package.json`

For power users, it might be easier to use one of these new hooks instead of forking
`standard`, though that's still encouraged, too!

- Set eslint "plugins" ([#386](https://github.com/feross/standard/issues/386))
- Set eslint "rules" ([#367](https://github.com/feross/standard/issues/367))
- Set eslint "env" ([#371](https://github.com/feross/standard/issues/371))

To set custom ESLint plugins, rules, or envs, use the command line `--plugin`, `--rules`, and `--env` flags.

In `package.json`, use the "standard" property:

```json
{
  "standard": {
    "plugins": [ "my-plugin" ]
  }
}
```

### Upgrade to ESLint v2
- There may be slight behavior changes to existing rules. When possible, we've noted these in the "New Rules" and "Removed Rules" section.

### Improve test suite

- Rule changes can be tested against every package on npm. For sanity, this is limited to packages with at least 4 dependents. Around ~400 packages.

### Known Issues

- Using prerelease eslint version (2.0.0-rc.0). There may be breaking changes before the stable release.
- `no-return-assign` behavior changed with arrow functions (https://github.com/eslint/eslint/issues/5150)

### Relevant diffs

- standard ([v5.4.1...v6.0.0](https://github.com/feross/standard/compare/v5.4.1...v6.0.0))
- eslint-config-standard ([v4.4.0...v5.0.0](https://github.com/feross/eslint-config-standard/compare/v4.4.0...v5.0.0))
- eslint-config-standard-jsx ([v1.0.0](https://github.com/feross/eslint-config-standard-jsx/commit/47d5e248e2e078eb87619493999e3e74d4b7e70e))
- standard-engine ([v2.2.4...v3.2.1](https://github.com/Flet/standard-engine/compare/v2.2.4...v3.2.1))

## 5.4.1 - 2015-11-16
[view diff](https://github.com/feross/standard/compare/v5.4.0...v5.4.1)

### Fixed

* Fix for `standard-engine` change. Fix error tagline.

## 5.4.0 - 2015-11-16
[view diff](https://github.com/feross/standard/compare/v5.3.1...v5.4.0)

### Added

* eslint-config-standard-react@1.2.0 ([history](eslint-config-standard-react))
  * Disallow duplicate JSX properties

## 5.3.1 - 2015-09-18
[view diff](https://github.com/feross/standard/compare/v5.3.0...v5.3.1)

### Changed
* eslint-plugin-react@3.4.2 ([history](eslint-plugin-react))

## 5.3.0 - 2015-09-16
[view diff](https://github.com/feross/standard/compare/v5.2.2...v5.3.0)

### Changed
* eslint-config-standard@4.4.0 ([history][eslint-config-standard])
  * **New rule:** must have space after semicolon in for-loop ([commit](https://github.com/feross/eslint-config-standard/commit/6e5025eef8900f686e19b4a31836743d98323119))
  * **New rule:** No default assignment with ternary operator ([commit](https://github.com/feross/eslint-config-standard/commit/0903c19ca6a8bc0c8625c41ca844ee69968bf948))
  * **New rule:** Require spaces before keywords ([commit](https://github.com/feross/eslint-config-standard/commit/656ba93cda9cd4ab38e032649aafb795993d5176))
* eslint-config-standard-react@1.1.0 ([history][eslint-config-standard-react])
* eslint-plugin-react@3.4.0 ([history][eslint-plugin-react])
* eslint-plugin-standard@1.3.1 ([history][eslint-plugin-standard])

## 5.2.2
[view diff](https://github.com/feross/standard/compare/v5.2.1...v5.2.2)

### Fixed
* We have a changelog now, and you're reading it!
* Minor README update
* Removed direct dependency on `eslint` (its now moved to [standard-engine](https://github.com/flet/standard-engine))

## 5.2.1 - 2015-09-03
[view diff](https://github.com/feross/standard/compare/v5.2.0...v5.2.1)

### Changed
* eslint-config-standard@4.3.1 ([history][eslint-config-standard])
  * **Revert rule**: Disallow unncessary concatenation of strings

### Fixed
* eslint-config-standard@4.3.1 ([history][eslint-config-standard])
  * fix regression with ternary operator handling

## 5.2.0 - 2015-09-03
[view diff](https://github.com/feross/standard/compare/v5.1.1...v5.2.0)

### Added
* eslint-config-standard@4.3.0 ([history][eslint-config-standard])
  * **New rule:** Disallow unncessary concatenation of strings
  * **New rule:** Disallow duplicate name in class members
  * **New rule:** enforce spaces inside of single line blocks
  * **Re-add rule:** padded-blocks ([Closes #170](https://github.com/feross/standard/issues/170))

### Changed
* Bump `eslint` from 1.1.0 to 1.3.1 ([CHANGELOG][eslint])
* eslint-plugin-standard@1.3.0 ([history][eslint-plugin-standard])
  * A small change to make the plugin compatible with browserify which does not affect behavior.

### Fixed
* eslint-plugin-react@3.3.1 ([CHANGELOG][eslint-plugin-react])
  * Fix object rest/spread handling.
* Added white background to badge.svg to make it work with dark backgrounds ([Closes #234](https://github.com/feross/standard/issues/234))
* Minor updates to README.md

## 5.1.1 - 2015-08-28
[view diff](https://github.com/feross/standard/compare/v5.1.0...v5.1.1)

### Fixed
* Update to RULES.md to remove a missing hyperlink
* Add atom linter information to README.md
* Fixed duplicated word in the tagline message on the CLI
* Removed failing repository from tests (yoshuawuyts/initialize)

## 5.1.0 - 2015-08-14
[view diff](https://github.com/feross/standard/compare/v5.0.2...v5.1.0)

## Fixed
* eslint-config-standard@4.1.0 ([history][eslint-config-standard])
  * Added rest/spread feature to `eslintrc.json` to fix [#226](https://github.com/feross/standard/issues/226) and [eslint-plugin-standard#3](https://github.com/xjamundx/eslint-plugin-standard/issues/3)
* eslint-plugin-react@3.2.2 ([CHANGELOG][eslint-plugin-react])
  * Fix crash when propTypes don't have any parent
  * Fix jsx-no-literals reporting errors outside JSX

### Changed
* Bump eslint from 1.0.0 to 1.2.0 ([CHANGELOG][eslint])
* Added more test repositories and disabled some that were failing
* Update bikeshedding link on README.md

## 5.0.2 - 2015-08-06
[view diff](https://github.com/feross/standard/compare/v5.0.1...v5.0.2)

### Changed
* eslint-config-standard-react@1.0.4 ([history][eslint-config-standard-react])
  - **Disable Rule:** react/wrap-multilines
* Minor README updates

## 5.0.1 - 2015-08-05
[view diff](https://github.com/feross/standard/compare/v5.0.0...v5.0.1)

## 5.0.0 - 2015-08-03
[view diff](https://github.com/feross/standard/compare/v4.5.4...v5.0.0)

## 4.5.4 - 2015-07-13
[view diff](https://github.com/feross/standard/compare/v4.5.3...v4.5.4)

## 4.5.3 - 2015-07-10
[view diff](https://github.com/feross/standard/compare/v4.5.2...v4.5.3)

## 4.5.2 - 2015-07-02
[view diff](https://github.com/feross/standard/compare/v4.5.1...v4.5.2)

## 4.5.1 - 2015-06-30
[view diff](https://github.com/feross/standard/compare/v4.5.0...v4.5.1)

## 4.5.0 - 2015-06-30
[view diff](https://github.com/feross/standard/compare/v4.4.1...v4.5.0)

## 4.4.1 - 2015-06-29
[view diff](https://github.com/feross/standard/compare/v4.4.0...v4.4.1)

## 4.4.0 - 2015-06-27
[view diff](https://github.com/feross/standard/compare/v4.3.3...v4.4.0)

## 4.3.3 - 2015-06-26
[view diff](https://github.com/feross/standard/compare/v4.3.2...v4.3.3)

## 4.3.2 - 2015-06-23
[view diff](https://github.com/feross/standard/compare/v4.3.1...v4.3.2)

## 4.3.1 - 2015-06-18
[view diff](https://github.com/feross/standard/compare/v4.3.0...v4.3.1)

## 4.3.0 - 2015-06-16
[view diff](https://github.com/feross/standard/compare/v4.2.1...v4.3.0)

## 4.2.1 - 2015-06-12
[view diff](https://github.com/feross/standard/compare/v4.2.0...v4.2.1)

## 4.2.0 - 2015-06-11
[view diff](https://github.com/feross/standard/compare/v4.1.1...v4.2.0)

## 4.1.1 - 2015-06-11
[view diff](https://github.com/feross/standard/compare/v4.1.0...v4.1.1)

## 4.1.0 - 2015-06-10
[view diff](https://github.com/feross/standard/compare/v4.0.1...v4.1.0)

## 4.0.1 - 2015-06-01
[view diff](https://github.com/feross/standard/compare/v4.0.0...v4.0.1)

## 4.0.0 - 2015-05-30
[view diff](https://github.com/feross/standard/compare/v3.9.0...v4.0.0)

[eslint-config-standard-react]: https://github.com/feross/eslint-config-standard-react/commits/master
[eslint-config-standard]: https://github.com/feross/eslint-config-standard/commits/master
[eslint-plugin-react]: https://github.com/yannickcr/eslint-plugin-react/blob/master/CHANGELOG.md
[eslint-plugin-standard]: https://github.com/xjamundx/eslint-plugin-standard/commits/master
[eslint]: https://github.com/eslint/eslint/blob/master/CHANGELOG.md