eslint-plugin-unicorn

Enhancements

• Apply the escape-case rule to regex literals and remove transformation of \c escape on string literals (#294) 79748e1
• Add BigInt type to the new-for-builtins rule (#310) e17f0fd

Fixes

• Do not warn if .flat() has more than one parameter or if the one parameter is not 1 (#317) 6f10722
• custom-error-definition: Cover exports name (#313) 3f2e9a6

Meta

• Welcome @MrHen as a maintainer 🎉 770fe42

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v9.0.0...v9.1.0

Breaking

• Require Node.js 8 9b9d761
• Use underscore naming pattern in the catch-error-name rule (#306) 0f8d5b4

New rules

• Add prefer-event-key rule (#226) 9bede78
• Add prefer-flat-map rule (#284) d440daa

Enhancements

• Add cases option to the filename-case rule (#291) 43a6e9a
• Make the no-for-loop rule handle more cases (#297) 3c0c7b9
• Make the import-index rule handle more cases (#293) f0c0a4f

Fixes

• Fix operator precedence bugs in the prefer-exponentiation-operator rule (#305) dc90c1e
• Fix the prefer-includes rule fixer omitting parentheses (#287) e36d25c

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v8.0.2...v9.0.0

• Don't use non-standard AST property in no-for-loop rule (#279) b86d456

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v8.0.1...v8.0.2

• Fix prevent-abbreviations breaking shorthand properties in assignment patterns (#268) d30751a

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v8.0.0...v8.0.1

This release is focused on helping you write more readable code and to adopt modern APIs. My favorite is the prevent-abbreviations rule, which encourages you to pick readable variable names.

New rules

• Add prevent-abbreviations rule (#237) 76ff30e
• Add no-for-loop rule (#221) b94ab9a
• Add no-zero-fractions rule (#244) 75b8192
• Add prefer-includes rule (#214) a330d74
• Add prefer-text-content rule (#223) c493115
• Add prefer-node-remove rule (#222) fda5517

Enhancements

• Add meta.type to rules (#241) 610a901
• Add excludedPackages option to the prefer-add-event-listener rule (#235) f141a4c
• Add event clearing to prefer-add-event-listener rule (#216) 7503d12

Fixes

• Fix the default value for the filename-case rule 139ac16
• Fix ES2015 exports not counting an object as used (#217) 6d5bb10
• Fix catch-error-name fixer not renaming all references in .catch case (#258) c2e4a9d
• Don't fix onbeforeunload unless it's handler does not return anything (#218) db2f192
• Prevent false-positives in the no-fn-reference-in-iterator rule (#172) 73e8d5d

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v7.1.0...v8.0.0

• Make the catch-error-name rule fixable in most cases (#209) 3c66c0e
• Make the no-abusive-eslint-disable rule support shorthand syntax (#212) fcee1c6

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v7.0.0...v7.1.0

• Add prefer-query-selector rule (#198) a44e16c
• Add prefer-node-append rule (#201) 9da5e6a
• Add no-unused-properties rule (#195) 0179443
• Add no-unreadable-array-destructuring rule (#199) 62c51a7
• Add no-console-spaces rule (#191) 5dd529f
• custom-error-definition - Fix null reference (#188) cf3e22d
• Support parsing ES2019 42e1af8

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v6.0.1...v7.0.0

It's a major release as the recommended config received new rules which could potentially break your build.

• catch-error-name rule: Support optional catch binding (#187)

• Add prefer-exponentiation-operator rule. (#185) 9f7f811
• Change the default name option of the catch-error-name rule to be error instead of err. 7a1f1a1
• Re-enable the catch-error-name rule. 341ee3a
• Include the plugin itself in the recommended preset. a41a77b
• regex-shorthand rule: Escape backslash and apostrophe. (#183) 8a50f40
• filename-case rule: Survive missing options block. (#184) 2283cda

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v5.0.0...v6.0.0

• Require ESLint 5. https://github.com/sindresorhus/eslint-plugin-unicorn/commit/a6ce053a9d2661d459a2d36728c15fc21353a41a
• Require Node.js 6. https://github.com/sindresorhus/eslint-plugin-unicorn/commit/b546647e49e02fccda4f33bc5b365090e0817562
• Also check conditional expressions in explicit-length-check rule. https://github.com/sindresorhus/eslint-plugin-unicorn/commit/ad1fd85640a266fe85ebc0b0cffe6dcb21dca0c5

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v4.0.3...v5.0.0

• Added: prefer-add-event-listener rule. https://github.com/sindresorhus/eslint-plugin-unicorn/commit/b7e4afbf6562b93d88f6c652a64df72316c73004
• Added: prefer-spread rule rule. https://github.com/sindresorhus/eslint-plugin-unicorn/commit/aeedf6fa7c7f69520b03df493a07dd46b3d1caa6
• Added: no-unsafe-regex rule. https://github.com/sindresorhus/eslint-plugin-unicorn/commit/b1beb61bf3a5f1c0c2c6e2b862907dffcef65b60 (Disabled for now)
• Added: error-message rule. https://github.com/sindresorhus/eslint-plugin-unicorn/commit/dd05f68f42b51c5941a59fb1509ef48bad658440
• Added: caughtErrorsIgnorePattern option to catch-error-name rule. https://github.com/sindresorhus/eslint-plugin-unicorn/commit/54738bed4936a2f06215bc124081d0fc6dd571a1
• Improvement: Exclude index.js from the filename-case rule. https://github.com/sindresorhus/eslint-plugin-unicorn/commit/6a9b550f08461b35c99a465dc7c42420c90eb089
• Fixed: Allow specifying rules from a scoped plugin in the no-abusive-eslint-disable rule. https://github.com/sindresorhus/eslint-plugin-unicorn/commit/1b7c27f5c7d10d5ed6acfe1e37192f497a1f27f0
• Fixed: Allow regex literal inside RegExp constructor in the regex-shorthand rule. https://github.com/sindresorhus/eslint-plugin-unicorn/commit/adc59dbb5d7740ad983cc1425bc8317651f858ad

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v3.0.1...v4.0.0

Big thanks to @johnwu93 @bdougherty @evilebottnawi @Arcanemagus @sudo-suhas for contributing to this release! 🎉

Bugfixes

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v3.0.0...v3.0.1

• Added import-index rule. cab60da3649ab4ab058d90880b301dbdb10d4473
• Added new-for-builtins rule. 9dfd50858ef20c76d8ad68efb85560e812b7f99a
• Added regex-shorthand rule. cba8dd9f31f2ff5646376b137a85f95ab2567e98
• Added no-fn-reference-in-iterator rule. c11cc5db3db15087314c85dd98055a555818346b
• Added non-zero length style option to explicit-length-check rule. 0c61fde82a8f01c61e34b38b55ef5105f5487a9f
• Re-enabled the escape-case and no-hex-escape rules. They were previously disabled because of some issues. 81b92a945620ed4bbcc10fe7220ab25a8c92667b

All changes: https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v2.1.1...v3.0.0

Disable the escape-case and no-hex-escape rules in the recommended config until they work reliably. https://github.com/sindresorhus/eslint-plugin-unicorn/commit/b892525e19e01150972abdaf44515d367f17e3ee

See: #85

• Support custom errors in the throw-new-error rule
• Bug fix for number only escapes in escape-case rule

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v2.0.1...v2.1.0

Fixed some urgent crasher issues.

Help wanted to add integration tests so this doesn't happen in the future.

8 new rules

• number-literal-case - Enforce lowercase identifier and uppercase value for number literals. (fixable)
• no-array-instanceof - Disallow instanceof Array, instead use Array.isArray(). (fixable)
• no-new-buffer - Enforce the use of Buffer.from() and Buffer.alloc() instead of the deprecated new Buffer(). (fixable)
• no-hex-escape - Enforce the use of unicode escapes instead of hexadecimal escapes. (fixable)
• escape-case - Require escape sequences to use uppercase values. (fixable)
• custom-error-definition - Enforces the only valid way of Error subclassing. (fixable)
• prefer-starts-ends-with - Prefer String#startsWith & String#endsWith over more complex alternatives.
• prefer-type-error - Enforce throwing TypeError in type checking conditions. (fixable)

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v1.0.0...v2.0.0