eslint-plugin-unicorn

• no-array-method-this-argument: Fix false positives (#1386) d364d67

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v34.0.0...v34.0.1

New rules

• no-array-method-this-argument (#1357) 96587f2
• require-post-message-target-origin (#1326) 03c540b
• prefer-top-level-await (#1325) 05722a1
  • Disabled in the recommended preset.
• prefer-at (#1331) 8ca5b46
  • Disabled in the recommended preset.

Improvements

• prefer-module: Ignore .cjs files (#1355) ebdc3c2
• error-message: Support AggregateError (#1351) e7b4300
• filename-case: Enforce lowercased file extension (#1336) 119615b
• expiring-todo-comments: More helpful error when no conditions (#1375) 914a996
• prefer-array-some and prefer-regexp-test: Support Vue SFC (#1364) a46050e
• explicit-length-check: Support v-show directive (#1363) f163c4a
• explicit-length-check: Support Vue SFC files (#1360) 9199611
• prefer-type-error: Improve report location (#1354) bc3d58b
• no-useless-undefined: Ignore Set#add() Map#set() Array#{push,unshift}() (#1353) c6359c3
• prefer-prototype-methods: Only check methods from [] and {} (#1347) 29a4e75
• prefer-array-some: Report non-zero check on array.filter().length (#1337) f8aaac2
• Use context.getPhysicalFilename() (#1344) e2540cb

Fixes

• prefer-array-find and prefer-at: Fix crash on LHS zero index access (#1373) da1f6d8
• prefer-prototype-methods: Fix a missing condition on object literal check (#1332) cec7f11

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v33.0.1...v34.0.0

• prefer-prototype-methods: Ignore known object literal methods (#1330) 639e7af

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v33.0.0...v33.0.1

New rules

• require-array-join-separator (#1284) 36e7103
• require-number-to-fixed-digits-argument (#1288) 4a30863
• prefer-prototype-methods (#1247) 7bde733
• prefer-object-has-own (#1322) ca34b40
  • Not enabled in the recommended preset.

Improvements

• no-array-for-each: Handle only return statement inside if or else (#1319) 298a104
• new-for-builtins & no-new-buffer: Handle line breaks after new keyword (#1301) d37439f
• prefer-array-flat-map: Remove check on [].concat(...array.map(…)) (#1299) 128b5aa
• prefer-spread: Ignore {arrayBuffer,blob,buffer,file,this}.slice() (#1287) e18d5f2
• prefer-string-starts-ends-with: Add suggestions for safely handling non-strings (#1277) f14a9d1
• explicit-length-check: Ignore this.{size,length} (#1289) ed85d00
• prefer-string-starts-ends-with-rule: Don't autofix known non-string values (#1281) a1c8984
• explicit-length-check: Ignore known, non-number length properties (#1264) 42f6487
• empty-brace-spaces: Support experimental syntax (#1276) fa68b6f
• prefer-dom-node-remove: Improve parentheses handling (#1254) 74e4d39

Fixes

• prefer-array-flat: Fix incorrect fix, check Array.prototype.concat.call (#1317) f6a939c

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v32.0.1...v33.0.0

• prevent-abbreviations: Fix shorthand import/export detection (#1252) 4367479

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v32.0.0...v32.0.1

Breaking

• Drop support for Node.js v10 (#1211) a8e9f26
• Drop support for babel-eslint (#1211) a8e9f26 You should migrate to @babel/eslint-parser

New rules

• no-document-cookie (#1244) 866c4a3
• numeric-separators-style - Was previously disabled.
• prefer-array-flat - Was previously disabled.
• prefer-array-flat-map - Was previously disabled.

Improvements

• no-for-loop: Ignore known non-array loop variables (#1242) 29f6b45
• prefer-array-find: Singularize variable name in autofix (#1243) 6b340a3
• prefer-switch: Do not add braces to the default case (#1235) c241782
• no-zero-fractions: Handle numeric separators, fix missing parentheses, improve report location (#1238) 2724afa
• no-array-for-each: Better error message (#1239) 2e82dc8
• prefer-switch: Avoid conflict with no-unreachable rule (#1234) 1c78d0c
• prefer-optional-catch-binding: Support checking destructured errors (#1229) a0b2f4f
• no-array-for-each: Support autofixing complicated parameters (#1228) d84143f
• prefer-negative-index: Support Array#at() (#1217) 6443ee3
• explicit-length-check: Check Set#size (#1226) 6a745a0
• filename-case: Improve report position (#1227) 3d4ac1b

Fixes

• prevent-abbreviations: Fix shorthand import/export detection (#1215) a669e31

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v31.0.0...v32.0.0

New rules

• prefer-node-protocol (#1203) b1a5f53
• prefer-module (#1141) a7e393c

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v30.0.0...v31.0.0

New rules

• prefer-switch (#1181) 10e7a0c

Breaking

• prevent-abbreviations: Rename options (#1164) cf42cc5
• no-keyword-prefix: Rename blacklist option to disallowedPrefixes (#1180) 91e60d0

Improvements

• no-array-push-push: Add ignore option (#1168) f9262d9
• prefer-spread: Report array.slice(0) (#1182) 92bebe1
• no-useless-undefined: Handle parenthesized undefined (#1178) c88882e
• no-array-for-each: Improve fixable parameter detection (#1177) 18d1ac2
• prefer-array-flat-map: Exclude React.Children.map().flat() (#1159) 3e6b6fb
• better-regex: Report parsing errors (#1133) 51ee030
• filename-case: Uniquify suggestion filenames (#1160) a87238f
• Support PropertyDefinition (#1127) 75c4d78

Fixes

• prefer-number-properties: Fix some edge cases (#1170) e7e25b8
• prefer-number-properties: Fix some edge cases (part 2) (#1176) 3a58802
• prefer-regexp-test: Do not fix if regexp has g flag (#1173) 8d97beb
• no-array-for-each: Do not fix if callback parameter has type annotation (#1167) 0d4fc8b
• no-useless-undefined: Do not report return undefined if function has returnType (#1165) 4ff39e0
• prefer-set-has: Use suggestions if node has type annotation (#1158) 1221185
• no-null: Exclude second argument of Node.insertBefore() (#1157) b16c316
• prefer-add-event-listener: Fix crash on parenthesized cases (#1153) c95e854
• Fix optional MemberExpression check when using ecmaVersion: 2019 (#1151) 56d5d9a
• prefer-regexp-test: Do not fix if argument of String#match() is known not RegExp (#1152) 0abc394

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v29.0.0...v30.0.0

New rules

• no-static-only-class (#1120) f3b2441
• prefer-array-flat (#1126) 2397d94

Improvements

• no-array-for-each: Use let if parameters are reassigned (#1139) a13ad3c
• no-array-push-push and prefer-ternary: Improve same reference detection (#1123) c2c28a6
• prefer-spread: Add Array#slice() check (#1117) 8bdb52d

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v28.0.2...v29.0.0

• prevent-abbreviations: Do not rename exported types when using @babel/eslint-parser (#1104) 9a91a3d
• prevent-abbreviations: Do not rename exported TypeScript types (#1103) 5c08932

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v28.0.1...v28.0.2

• Fix missing eslint-visitor-keys dependency (#1100) 5c1ff2e

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v28.0.0...v28.0.1

Improvements

• no-lonely-if: Keep all comments (#1047) da94ca9
• prefer-includes: Add Array#some() check (#1097) ee3a2e5
• prefer-includes: Improve report location (#1061) 83575a8
• prefer-spread: Improve auto-fix (#1080) e54dc66
• prefer-spread: Add more suggestions for .concat fix (#1054) 673c440

Fixes

• no-unreadable-array-destructuring: Fix crash on destructuring in for…of loop (#1076) 11ce1bc
• no-array-for-each: Ignore React.Children.forEach (#1088) 5a931dd
• prefer-string-slice: Keep optional chaining in autofix (#1085) acaf197
• prefer-spread: Ignore Buffer.concat() (#1069) da685f7
• Ignore unexpected case in catch-error-name and prefer-set-has (#1077) 79a64b1
• prefer-default-parameters: Fix non-iterable visitorKeys (#1013) d707e83
• consistent-destructuring: Add ExperimentalRestProperty check (#1060) aca2ec5

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v27.0.0...v28.0.0

New rules

• no-array-for-each (#1017) 719cd00
• no-array-push-push (#1015) 21537d7
• no-this-assignment (#1018) 62a2f92

Improvements

• prefer-ternary: Add only-single-line option (#1025) 306c9e7
• numeric-separators-style: Add onlyIfContainsSeparator option (#916) 8d32574
• prefer-spread: Prefer ... over Array#concat() (#1029) cda72bd
• prefer-spread: Fix more .concat cases (#1042) c3c7ba3
• no-array-callback-reference: Improve suggestions for Array#forEach() (#1049) 77bcdc6
• no-new-buffer: Use suggestion for unknown arguments (#1037) 88a724c
• no-unreadable-array-destructuring: Add auto-fix (#1010) 27bc3c3
• new-for-builtins: Better auto-fix (#1022) 5ba0f83
• no-instanceof-array: Better auto-fix (#1020) 0520f31

Fixes

• prefer-query-selector: Fix crash on unexpected selector (#1034) 88018ca

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v26.0.1...v27.0.0

• prefer-math-trunc: Use suggestion instead of auto-fix for x | 0 (#1014) 74b1b2d

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v26.0.0...v26.0.1

New rules

• no-new-array (#992) 48390c1
• prefer-array-index-of (#920) 517a782
• prefer-regexp-test (#970) 7b74b40
• consistent-destructuring (#325) 32bd31c

Improvements

• Remove import-index rule from recommended preset (#977) ff1cd2e
• prefer-string-starts-ends-with: Remove check on String#match() (#1002) c9fa8b1
• no-array-callback-reference: Ignore AwaitExpression except reduce and reduceRight (#814) 4c2b00b

Fixes

• prefer-string-starts-ends-with: Fix missing parentheses for some cases (#976) e2f94fe
• Don't consider ?? operator LogicExpression as a boolean value node (#986) dc7f79b

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v25.0.0...v26.0.0

• Fix deprecated rules (#968) https://github.com/sindresorhus/eslint-plugin-unicorn/commit/9921acc966b8b4c7baac4a2a13f141a630a367fe

New rules

• prefer-array-some (#887) b6a5a50
• prefer-default-parameters (#632) 8015768

Renamed rules

We improved the naming and name consistency of some rules. Sorry about the churn.

If you use the recommended preset and you're not overriding any rules, you don't need to do anything.

• no-fn-reference-in-iterator → no-array-callback-reference
• no-array-instanceof → no-instanceof-array
• no-reduce → no-array-reduce
• prefer-dataset → prefer-dom-node-dataset
• prefer-flat-map → prefer-array-flat-map
• prefer-replace-all → prefer-string-replace-all
• prefer-starts-ends-with → prefer-string-starts-ends-with
• prefer-text-content → prefer-dom-node-text-content
• prefer-trim-start-end → prefer-string-trim-start-end
• prefer-event-key → prefer-keyboard-event-key
• prefer-node-append → prefer-dom-node-append
• prefer-node-remove → prefer-dom-node-remove

20c6341

Improvements

• explicit-length-check: Make rule work in many more cases (#943) f3bc798
• explicit-length-check: Check unsafe LogicalExpressions (#952) a1b60ad
• explicit-length-check: Check Boolean(foo.length) (#951) f4577f7
• explicit-length-check: Check more cases (#941) 83a6453
• new-for-builtins: Ignore Object(x) === x and Object(x) !== x (#944) 5c7ea92
• explicit-length-check: Rewrite rule (#938) 94ae87a

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v24.0.0...v25.0.0

New rules

• no-lonely-if (#936) 485dbf9
• empty-brace-spaces (#933) c137daa
• prefer-date-now (#935) d0c4826

Improvements

• prevent-abbreviations: Add ignore option (#891) 898fcb4
• no-useless-undefined: Add checkArguments option (#877) a1617b9
• consistent-function-scoping: Allow ignoring arrow functions (#932) 17bf27c
• Rewrite error-message rule (#922) 877bef9
• Improve prefer-query-selector rule (#908) 635601d
• prevent-abbreviations: Add var/vars replacements (#894) 07dadf5
• prevent-abbreviations: Add ver → version replacement (#870) e755cdd
• prefer-number-properties: Support computed key of ClassProperty MethodDefinition Property (#886) 769ac35
• prefer-optional-catch-binding: Improve output (#884) 375d11a
• no-null: Exclude useRef(null) and React.useRef(null) (#890) 7a4dbf4
• prefer-number-properties: Add Infinity support (#874) 643169b
• no-console-spaces: Improve report location (#866) 190cbac
• no-useless-undefined: Ignore toHaveBeenCalledWith method (#876) d10a641
• prefer-replace-all: Handle u flag (#879) d98d867
• no-for-loop: Improve output when using the TypeScript parser (#883) 52edd3b
• no-for-loop: Respect declaration kind (#878) df3f7bd
• no-for-loop: Only report on the for loop head part (#885) e9c6963

Fixes

• Fix false import styles seen in reported problem messages (#910) d669707
• import-style: Fix crash on babel-eslint parser (#927) 9f5f721
• prevent-abbreviations: Fix crash with TypeScript parser (#913) 9d5eca6
• prefer-query-selector: Fix crash on calling without argument (#906) 36908da
• import-style: Fix crash on destructing require (#904) 8335d41
• new-for-builtins: Remove auto-fix for new String, new Boolean(), and new Number() (#907) dfc1ce0

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v23.0.0...v24.0.0

New rules

• Add prefer-math-trunc rule (#851) 5ee2432
• Add numeric-separators-style rule (#833) 6c9b531
• Add prefer-ternary rule (#514) d59cf95

Improvements

• explicit-length-check: Use 'non-zero': 'greater-than' by default (#850) 7c5df5f
• prevent-abbreviations: Add fn/func -> function, i/idx/j -> index replacements (#836) e502f42
• consistent-function-scoping: Check anonymous functions (#835) 29ecbf6
• no-console-spaces: Make space position more specific (#838) e17a63f
• no-nested-ternary: Improve report location & message (#844) ca1afa6
• Track JSX presence per-function, fixing some false negatives (#830) 85d424c

Fixes

• prefer-flat-map: Exclude .flat() where depth is not 1 (#859) 61d9851

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v22.0.0...v23.0.0

New rules

• Add import-style rule (#789) 0c7a199

Improvements

• Allow Children in no-fn-reference-in-iterator (#809) 036e440
• filename-case: Ignore more index files (#826) 64d03a5
• Update ecmaVersion to 2021 (#820) a78cea3

Fixes

• prefer-trim-start-end: Fix error message, improve report location (#823) b35c261
• number-literal-case: Fix false positive on @typescript-eslint/parser (#815) 33a1268
• no-unused-properties: Fix error thrown when using rest in object destructuring (#811) 1475f39

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v21.0.0...v22.0.0

New rules

• Add prefer-array-find rule (#735) 12b46da
• Add no-object-as-default-parameter rule (#633) 9989d2d

Improvements

• Add ev to event default replacement to prevent-abbreviations rule (#793) a0b4aba
• Ignore more types in no-fn-reference-in-iterator and no-reduce rule (#756) 5159c24
• Make unicorn/prefer-flat-map not enabled by default in the recommended config 655220a
• Improve consistent-function-scoping report location (#778) df218a2
• Improve consistent-function-scoping message (#773) 4ed2adf

Fixes

• consistent-function-scoping: Fix wrong detect of IIFE (#772) f7127da
• prefer-starts-ends-with: Fix pipe in regex (#783) 1dca2f3
• prevent-abbreviations: Fix optional parameter (#764) 7781c3f
• no-useless-undefined: Ignore undefined use in compare functions (#758) 6d36407

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v20.1.0...v21.0.0

• Use singular array element variable name in autofix for no-for-loop rule (#745) 2002093
• Avoid naming collision with default array element variable in autofix for no-for-loop rule (#749) 48bd5c8

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v20.0.0...v20.1.0

Breaking

• Require ESLint 7 (#577) e4f44f3

New rules

• Add prefer-optional-catch-binding rule (#671) efdb03a
• Add no-useless-undefined rule (#718) 30dbe6d
• Add no-reduce rule (#704) 06ed7ee

Improvements

• throw-new-error: Check MemberExpression customError (#716) a28aad5
• prefer-starts-ends-with: Add auto-fix (#711) da978e3
• consistent-function-scoping: Ignore IIFE (#707) 1f4413d
• prefer-set-has: Ignore arrays only checking existence once (#706) 54c6f54

Fixes

• prefer-starts-ends-with: Fix bug with m flag (#721) 83bbabc
• prefer-string-slice: Handle negative length in .substr() (#709) 7439465

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v19.0.1...v20.0.0

• no-fn-reference-in-iterator: Ignore this. and Vue.filter (#699) b02a9c6
• no-fn-reference-in-iterator: Ignore cases obviously not a function reference (#697) dae5107

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v19.0.0...v19.0.1

New rules

• Add no-null rule (#636) c773c16

Breaking

• string-content: Make it have no default patterns (#637) 08fad55
• catch-error-name: Replace caughtErrorsIgnorePattern option with an ignore option (#661) 5a27f04

Improvements

• custom-error-definition: Support class properties (#673) 9cc8d60
• catch-error-name: Support Promise#then (#660) edcf73c
• prefer-set-has: Supports more types of array (#641) 29f3c9c

Fixes

• escape-case: Fix missing characters (#678) d986427
• no-nested-ternary: Fix incorrect result with TypeScript parser (#664) cb08ed0
• custom-error-definition: Fix duplicated reports on this.message assign (#669) aa00647
• custom-error-definition: Fix crash on @typescript-eslint/parser (#659) e8cb921
• catch-error-name: Improve error message (#665) 8ac9a90
• catch-error-name: Fix error renaming (#654) cc2d1b1
• catch-error-name: Only allow _ when it's not used (#650) 0c31a0b
• catch-error-name: Ignore destructuring (#649) b2838fd

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v18.0.1...v19.0.0

• prefer-number-properties: Fix suggestion description (#635) d410ca3

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v18.0.0...v18.0.1

New rules

• Add prefer-number-properties rule (#622) 8d8ce43
• Add prefer-set-has rule (#604) 9fa8de1

Improvements

• Add ignore option to expiring-todo-comment rule (#555) 08fabf6

Fixes

• no-console-spaces: Fix crash on string contains \n (#629) 9cd01cd
• explicit-length-check: Ignore computed length of MemberExpression (#620) 418e072
• prefer-spread: Insert semicolon in more cases (#615) de48b3d
• catch-error-name: Keep typeAnnotation when replacing identifier (#613) 446ff37
• prevent-abbreviations: Fix crash on TypeParameter with default value (#606) 2ef7a21
• prevent-abbreviations: Add global variables check (#603) b5c0a12
• Update regexp-tree to fix whitespace rewrite (#605) 2b78a17

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v17.2.0...v18.0.0

• consistent-function-scoping: Check use of this and arguments (#590) 8b417e6
• prevent-abbreviations: Fix inappropriate suggestion (#592) 2e20294
• consistent-function-scoping: Ignore within React hooks (#588) 7126d6d
• string-content: Ignore some TaggedTemplateExpression (#585) 92f3f3d
• consistent-function-scoping: Display function name in error message (#589) e7e49ec
• consistent-function-scoping: Fix uninitialized variable check (#587) 4c48c02

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v17.1.0...v17.2.0

• Allow descriptive error names by default in catch-error-name rule (#581) 7bd8687

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v17.0.1...v17.1.0

• Fix a problem with deprecated rules (#584) fe8f336

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v17.0.0...v17.0.1

New rules

• Add string-content rule (off by default) (#496) 0972a89

Breaking

• Rename regex-shorthand rule to better-regex (#522) a5e5405

Improvements

• Improve new-for-builtins rule (#540) fdd96cb
• Expand reporting for prefer-node-remove rule (#507) b6e6b32

Fixes

• prefer-spread: Insert semicolon if needed (#578) 49c4acf
• Fix prefer-negative-index crash on not enough arguments (#564) 50e038c
• Fix scope compare in consistent-function-scoping (#562) ec4387c
• Fix no-new-buffer crash on TypeScript-ESLint (#560) e4f4bb4
• Fix escape-case missing cases (#534) 892f054
• Disable auto-fix .onmessage in prefer-add-event-listener rule (#543) 96af562

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v16.1.1...v17.0.0

• Fix escape-case fixer bug on template literals (#525) cb24d44

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v16.1.0...v16.1.1

• Ensure all the rules are compatible with TypeScript-ESLint (#519) 3bff4fd

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v16.0.0...v16.1.0

Breaking

• Require Node.js 10 d2ffe2c

New rules

• Add prefer-replace-all rule (#488) d98c277

Improvements

• Allow disabling of regexp character sorting in the regex-shorthand rule (#468) fb0268b
• Deprecate our prefer-exponentiation-operator rule in favor of the built-in ESLint rule (#484) c4ffb1a
• Improve number-literal-case rule (#490) cea1346

Fixes

• Fix expiring-todo-comments crashing on invalid package version (#494) fd46adc
• Fix invalid autofix with array destructuring in no-for-loops rule (#489) 94345a3
• prefer-modern-dom-apis: Only fix when expression is not used (#503) 096fead
• prefer-node-remove: Only fix when expression is not used (#498) b1d3f37

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v15.0.1...v16.0.0

• Fix Node.js 8 compatibility 54d3a01

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v15.0.0...v15.0.1

New rules

• prefer-modern-dom-apis (#362) 44d14b9

Enhancements

• Add more prevent-abbreviations rule replacements and whitelist (#464) cfd3d49

Fixes

• Fix invalid autofix with destructuring assignment in no-for-loops rule (#476) 44a67f1

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v14.0.1...v15.0.0

• Fix crashing issues with the regex-shorthand rule (#454) db41877

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v14.0.0...v14.0.1

New rules

• Add prefer-negative-index rule (#417) 20dfb65
• Add prefer-trim-start-end rule (#440) 29e3b13

Improvements

• Extend fixers for prefer-string-slice rule (#424) 567c970
• Add ignoreImports option to import-index rule (#421) bda7769
• Make regex-shorthand rule use regexp-tree for regex literals (#437) 3554c17

Fixes

• Fix prevent-abbreviations rule fixer bug (#444) fa8c80e
• Fix custom-error-definition rule to support constructors without a body (#442) a496e96

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v13.0.0...v14.0.0

Breaking

• Change some options for prevent-abbreviations rule (#422) 4d5f5cb The checkDefaultAndNamespaceImports and checkShorthandImports options accept a string instead of a boolean now. The default value changed from always checking to only checking internal imports (meaning local modules and not published packages).

Enhancements

• Support pre-release versions in expiring-todo-comments rule (#435) a03132e
• Add ignore option to the filename-case rule (#431) 1bc47a0

Fixes

• Fix require() in import-index rule (#436) 393e8e1

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v12.1.0...v13.0.0

• Improve prefer-includes rule (#411) 32851cc
• Set checkProperties default value to false for prevent-abbreviations (#404) d279f2a

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v12.0.2...v12.1.0

• Fix an error where the rules in some situation could not be found a026ae5
• Set allowWarningComments option default to true for expiring-todo-comments rule (#400) 5f409ff

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v12.0.1...v12.0.2

• Handle lack of package.json in expiring-todo-comments rule (#397) f9f6ee6

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v12.0.0...v12.0.1

New rules

• Add prefer-string-slice rule (#288) cbd5dfc

Enhancements

• Update filename-case rule to handle complicated filename (#381) 871dab7
• Update prevent-abbreviations to ignore uppercase letters (#379) 50e6655

Fixes

• Fix the expiring-todo-comments rule for programmatic usage of ESLint (#385) b5cf874
• Don't report no-process-exit rule in worker threads (#388) 90ca979

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v11.0.2...v12.0.0

• unicorn/prefer-dataset: Fix querySelector fixer (#383) 3ba54e9

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v11.0.1...v11.0.2

• consistent-function-scoping: Ignore anything containing JSX (#382) 8a999c0
• consistent-function-scoping: Do not fail on same-scoped function references (#378) b62d96e

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v11.0.0...v11.0.1

New rules

• Add expiring-todo-comments rule (#302) 6b6cee5
• Add no-nested-ternary rule (#296) 767fa8d
• Add consistent-function-scoping rule (#309) 91bbff5
• Add prefer-reflect-apply rule (#239) 0b9c0fe
• Add prefer-dataset rule (#225) 0910972

Enhancements

• Add more replacements to the prevent-abbreviations rule: 9b81e11 8ff4d91 dc8841a f500437
  • param → parameter
  • params → parameters
  • cur → current
  • curr → current
  • acc → accumulator
  • dir → direction
• Add BigInt64Array and BigUint64Array types to the new-for-builtins rule (#353) e7ff2de
• Add support for isBigInt type check to the prefer-type-error rule (#356) 186abd3
• Refactor the prevent-abbreviations rule to handle more cases (#337) 9db361f

Fixes

• Fix usage with eslint --stdin (#346) 5e7ac3e
• Fix exception thrown in the catch-error-name rule (#363) 05641ba

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v10.0.0...v11.0.0

Breaking

• Require ESLint 6 (#331) bd9e00b

New rules

• Add no-keyword-prefix rule (#282) 1982af5

Enhancements

• Add checkFilenames option to the prevent-abbreviations rule (#336) 4c3d61c
• Allow disabling of xo/no-abusive-eslint-disable via a comment (#308) 0fb6fcf
• prefer-flat-map: Report for common concat pattern (#323) c2b8e76

Fixes

• Fix exception sometimes thrown in "no-for-loop" in ES5 mode (#340) 9b076e2
• Fix ESLint default filename (#335) e83f8ed
• Fix false positives in the no-fn-reference-in-iterator rule (#281) 7410a1e

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v9.1.1...v10.0.0

• prefer-node-append: Only fix when expression is not used (#321) d62666d

https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v9.1.0...v9.1.1

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