oxlint v0.5.1

[0.5.1] - 2024-06-29

Bug Fixes

• c26975a linter: Only show the filename for max-lines (#3966) (Boshen)
• 94329e4 linter: Handle useful but empty constructors in no-useless-constructor (#3951) (DonIsaac)
• 6498a08 linter: No-useless-spread fixer with multiple spread elements (#3950) (DonIsaac)

oxlint v0.5.0

[0.5.0] - 2024-06-27

Features

• 3ae2628 linter: Change no-import-assign to correctness (#3928) (Boshen)
• a89d501 linter: @typescript-eslint/no-non-null-asserted-nullish-coalescing (#3850) (kaykdm)
• fc48cb4 linter: eslint-plugin-jest/prefer-jest-mocked (#3865) (cinchen)
• 328445b linter: vitest/no-disabled-tests (#3717) (mysteryven)
• 8c61f9c linter: @typescript-eslint/no-non-null-assertion (#3825) (kaykdm)
• 9493fbe linter: oxc/no-optional-chaining (#3700) (mysteryven)
• 139adfe linter: @typescript-eslint/no-import-type-side_effects (#3699) (mysteryven)
• 5f84500 linter: react/prefer-es6-class (#3812) (Jelle van der Waa)
• fafe67c linter: max-dependencies (#3814) (Jelle van der Waa)

Bug Fixes

• 5902331 cli: properly report configuration error (#3889) (Luca Bruno)

Refactor

• 7302429 linter/prefer_number_properties: Remove the unused IdentifierName check (#3822) (Boshen)

oxlint v0.4.4

[0.4.4] - 2024-06-14

Highlights

Sort imports via oxlint --fix -D sort-imports

• f6d9ca6 linter: Add eslint/sort-imports rule (#3568) (Wang Wenzhe)

Features

• 8f5655d linter: Add eslint/no-useless-constructor (#3594) (Don Isaac)
• 29c78db linter: Implement @typescript-eslint/explicit-function-return-type (#3455) (kaykdm)
• 21d3425 linter: Typescript-eslint no-useless-empty-export (#3605) (keita hino)
• 85c3b83 linter: Eslint-plugin-jest/max-nested-describes (#3585) (cinchen)
• 046ff3f linter/eslint: Add no_unreachable rule. (#3238) (rzvxa)
• e32ce00 linter/jsdoc: Implement require-param-name rule (#3636) (Yuji Sugiura)
• 110661c linter/jsdoc: Implement require-param-description (#3621) (Yuji Sugiura)
• d6370f1 linter/jsdoc: Implement require-param-type rule (#3601) (Yuji Sugiura)

Bug Fixes

• f0b689d linter: Panic in jsdoc/require-param (#3590) (Don Isaac)

oxlint v0.4.3

[0.4.3] - 2024-06-07

Features

• 1fb9d23 linter: Add fixer for no-useless-fallback-in-spread rule (#3544) (Don Isaac)
• 6506d08 linter: Add fixer for no-single-promise-in-promise-methods (#3531) (Don Isaac)
• daf559f linter: Eslint-plugin-jest/no-large-snapshot (#3436) (cinchen)
• 4c17bc6 linter: Eslint/no-constructor-return (#3321) (谭光志)
• 4a075cc linter/jsdoc: Implement require-param rule (#3554) (Yuji Sugiura)
• 747500a linter/jsdoc: Implement require-returns-type rule (#3458) (Yuji Sugiura)
• 6b39654 linter/tree-shaking: Support options (#3504) (Wang Wenzhe)

Bug Fixes

• b188778 linter/eslint: Fix require-await false positives in ForOfStatement. (#3457) (rzvxa)
• 350cd91 parser: Should parser error when function declaration has no name (#3461) (Dunqing)

oxlint v0.4.2

What's Changed

Linter

• require-await by @todor-a in #3406
• eslint-plugin-unicorn/no-magic-array flat depth by @camc314 in #3411
• @typescript-eslint/consistent-indexed-object-style by @todor-a in #3126
• oxc/no-async-await rule by @mysteryven in #3438
• oxc/no-const-enum rule by @mysteryven in #3435
• oxc/no-rest-spread-properties rule by @mysteryven in #3432
• eslint-plugin-jest/prefer-hooks-on-top by @eryue0220 in #3437
• eslint-plugin-jest/require-top-level-describe by @eryue0220 in #3439
• no-div-regex by @jelly in #3442
• no-useless-concat by @jelly in #3363
• prefer-string-starts-ends-with: accept more valid regex by @magic-akari in #3408

Parser

• fix(parser): parse const extends in arrow functions correctly by @Dunqing in #3450

New Contributors

• @Bassadin made their first contribution in #3433

Full Changelog: oxlint_v0.4.1...oxlint_v0.4.2

oxlint v0.4.1

What's Changed

• fix(parser): fix lexer error while parsing parenthesized arrow expressions by @Boshen in #3400

The previous version refactored some parsing code around arrow expressions, which failed to parse the following snippet correctly

(/\./.exec())

Full Changelog: oxlint_v0.4.0...oxlint_v0.4.1

oxlint v0.4.0

Potential Breaking Changes

enforce rule severity from the cli and configuration file by @Boshen in #3337

The --deny or -D flag in the CLI, and the "error" severity setting in the configuration file will now set linter diagnostics to be an "error" and exit the program with exit code 1.

Previously, these flags had no effect, and all linter diagnostics were reported as warnings.

This means in CI, oxlint --deny-warnings is no longer needed for exit code 1 if oxlint -D correctness is set.

To restore the previous "report as warning" behaviour, the --warn or -W flag is added to the CLI, and the "warn" severity in the configuration file will take into effect.

merge deepscan rules into oxc rules by @Boshen in #3327

deepscan rules are now "oxc" rules, because there is no "deepscan" plugin in the eslint ecosystem and this caused some confusion.

Ecosystem CI

We added the Oxlint Ecosystem CI to maximize ecosystem compatibility, reduce churn, and minimize break-after-release

New Features

• --disable-oxc-plugin by @Boshen in #3328
• --disable-react/unicorn/typescript-plugin by @Boshen in #3305

The default rule set enables some plugins by default, the following CLI arguments are added for disabling them:

• --disable-react-plugin
• --disable-unicorn-plugin
• --disable-oxc-plugin
• --disable-typescript-plugin

New Rules

Two notable new rules that are under experiment but worth a try:

No Barrel File

oxlint --import-plugin -D no-barrel-file

Loading a lot of modules is slow for runtimes and bundlers.

To change the threshhold:

oxlint -c oxlintrc.json --import-plugin -D no-barrel-file

{
  "rules": {
    "oxc/no-barrel-file": ["error", {
      "threshold": 10
    }]
  }
}

See Speeding up the JavaScript ecosystem - The barrel file debacle for background reading.

Rule of Hooks

oxlint -D rules-of-hooks

Enforce the React Rules of Hooks.

• eslint-plugin-jest/no-duplicate-hooks by @eryue0220 in #3358
• default-case rule by @jelly in #3379
• no-new by @jelly in #3368
• prefer-exponentiation-operator by @jelly in #3365
• symbol-description by @jelly in #3364
• jsdoc/require-returns-description by @leaysgur in #3397

Bug Fixes

• fix(linter): avoid infinite loop in jest/expect-expect by @mysteryven in #3332
• fix(linter): avoid infinite loop when traverse ancestors in jest/no_conditional_expect by @mysteryven in #3330
• fix(linter): fix panic in jest/expect-expect by @Boshen in #3324
• fix(linter/jsx-no-undef): check for globals when an identifier is undefined by @Boshen in #3331
• fix(linter/next): false positives for non-custom font link by @Dunqing in #3383

Performance Improvements

• perf(lexer): use bitshifting when parsing known integers by @DonIsaac in #3296
• perf(linter): use usize for RuleEnum hash by @Boshen in #3336
• perf(parser): more efficient number parsing by @overlookmotel in #3342
• perf(parser): use FxHashSet for not_parenthesized_arrow by @Boshen in #3344
• perf(parser): improve parse_simple_arrow_function_expression by @Boshen in #3349
• perf(parser): improve expression parsing by @Boshen in #3352
• perf(parser): improve is_parenthesized_arrow_function_expression by @Boshen in #3343

What's coming next

• Published JSON schema for configuration file
• More features to the configuration file
• Automatically synced and never outdated documentation website pages
  • Command-line Interface
  • Configuration File
  • Rules Page

Full Changelog: oxlint_v0.3.5...oxlint_v0.4.0

oxlint v0.3.5

What's Changed

• feat(linter): add use-isnan fixer for (in)equality operations by @DonIsaac in #3284
• feat(linter/eslint): Implement fixer for unicode-bom rule by @jelly in #3259
• fix(linter/no-direct-mutation-state): false positive when class is declared inside a CallExpression by @Boshen in #3294
• fix(parser): parse DecoratorCallExpression when Arguments contains MemberExpression by @Boshen in #3265
• perf(ast): inline all ASTBuilder methods by @Boshen in #3295
• perf(lexer): dedupe numeric separator check by @DonIsaac in #3283
• perf(linter): rewrite react/require-render-return by @mysteryven in #3276

New Contributors

• @g-plane made their first contribution in #3268

Full Changelog: oxlint_v0.3.4...oxlint_v0.3.5

oxlint v0.3.4

What's Changed

• feat(linter): move react/rules_of_hooks to nursery
• feat(linter/eslint): Implement max-classes-per-file by @jelly in #3241

Full Changelog: oxlint_v0.3.3...oxlint_v0.3.4

---

From v0.3.3

What's Changed

Features

• add --symlinks to allow symbolic walking by @Boshen in #3244
• add --format github for github check annotation by @Boshen in #3191
• change the category of all react-perf rules to perf by @Dunqing in #3243
• remove deprecated eslint v9 rules no-return-await and no-mixed-operators by @Boshen in #3188
• move prefer-node-protocol to restriction by @Boshen in #3171

New Rules

• react/rules-of-hooks by @rzvxa in #3071
• eslint/radix by @KubaJastrz in #3167
• eslint/no-new-native-nonconstructor by @Boshen in #3187
• eslint/unicode-bom by @jelly in #3239
• eslint/no-empty-function rule by @jelly in #3181
• eslint-plugin-next/no-duplicate-head by @Boshen in #3174
• eslint-plugin-next/no-page-custom-font by @Dunqing in #3185
• eslint-plugin-next/no-styled-jsx-in-document by @Dunqing in #3184
• unicorn/no-anonymous-default-export by @1zumii in #3220

Bug Fixes

• improve prefer-string-starts-ends-with rule by @camc314 in #3176
• import/export: improve multiple exports error message by @Dunqing in #3160
• import/named: handle import { default as foo } by @Boshen in #3255
• shorten eslint/eqeqeq rule error message's span by @mysteryven in #3193
• fix(parser): correctly parse cls.fn = x by @Dunqing in #3208

New Contributors

• @KubaJastrz made their first contribution in #3167
• @1zumii made their first contribution in #3220

Full Changelog: oxlint_v0.3.2...oxlint_v0.3.3

oxlint v0.3.3

What's Changed

Features

• add --symlinks to allow symbolic walking by @Boshen in #3244
• add --format github for github check annotation by @Boshen in #3191
• change the category of all react-perf rules to perf by @Dunqing in #3243
• remove deprecated eslint v9 rules no-return-await and no-mixed-operators by @Boshen in #3188
• move prefer-node-protocol to restriction by @Boshen in #3171

New Rules

• react/rules-of-hooks by @rzvxa in #3071
• eslint/radix by @KubaJastrz in #3167
• eslint/no-new-native-nonconstructor by @Boshen in #3187
• eslint/unicode-bom by @jelly in #3239
• eslint/no-empty-function rule by @jelly in #3181
• eslint-plugin-next/no-duplicate-head by @Boshen in #3174
• eslint-plugin-next/no-page-custom-font by @Dunqing in #3185
• eslint-plugin-next/no-styled-jsx-in-document by @Dunqing in #3184
• unicorn/no-anonymous-default-export by @1zumii in #3220

Bug Fixes

• improve prefer-string-starts-ends-with rule by @camc314 in #3176
• import/export: improve multiple exports error message by @Dunqing in #3160
• import/named: handle import { default as foo } by @Boshen in #3255
• shorten eslint/eqeqeq rule error message's span by @mysteryven in #3193
• fix(parser): correctly parse cls.fn = x by @Dunqing in #3208

New Contributors

• @KubaJastrz made their first contribution in #3167
• @1zumii made their first contribution in #3220

Full Changelog: oxlint_v0.3.2...oxlint_v0.3.3