v26.0.0

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

v25.0.0...v26.0.0

v25.0.1

• Fix deprecated rules (#968) 9921acc

v25.0.0

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

v24.0.0...v25.0.0

v24.0.0

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

v23.0.0...v24.0.0

v23.0.0

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

v22.0.0...v23.0.0

v22.0.0

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

v21.0.0...v22.0.0

v21.0.0

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

v20.1.0...v21.0.0

v20.1.0

• 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

v20.0.0...v20.1.0

v20.0.0

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

v19.0.1...v20.0.0

v19.0.1

• 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

v19.0.0...v19.0.1