oxlint v0.2.5

What's Changed

This release matched all linter rule names with their ESLint counterparts.

• fix(linter): use correct rule name by @leaysgur in #2169

New Rules

• react: jsx-no-target-blank by @hjiog in #2149
• eslint: no-void by @eryue0220 in #2162
• jest: prefer-called-with by @eryue0220 in #2163

Fixes

• fix(linter): explicit-length-check inside ternary by @maurice in #2165

New Contributors

• @xc2 made their first contribution in #2155
• @hjiog made their first contribution in #2149

Full Changelog: oxlint_v0.2.4...oxlint_v0.2.5

oxlint v0.2.4

What's Changed

Fixed linux installation failures.

Full Changelog: oxlint_v0.2.3...oxlint_v0.2.4

oxlint v0.2.3

What's Changed

New eslint-plugin-react-perf

oxlint --react-perf-plugin

• eslint-plugin-react-perf by @byteHulk in #2086

Differenciate linux gnu / musl binary targets

• linux-x64-gnu
• linux-arm64-gnu
• linux-x64-musl
• linux-arm64-musl

• ci: release oxlint with linux-{x64-gnu, arm64-gnu, x64-musl, arm64-musl} by @Boshen in #2126

New Rules

• jest: no-restricted-matchers by @eryue0220 in #2090
• jest: no-restricted-jest-methods by @eryue0220 in #2091
• import: no-named-as-default by @XantreGodlike in #2109
• unicorn: promote no-new-array to correctness with better help message by @Boshen in #2123

Favor Array.from({ length: n }) and [onlyElement] instead of ambiguous new Array(arg)

Improvements

• eslint config jsonc support by @Boshen in #2121
• support eslint config in nextjs eslint by @kaykdm in #2107
• complete img-redundant linter by @msdlisper in #2112

Fixes

• cli: disallow path pointing to parent directories by @Boshen in #2125
• fix panic in prefer-native-coercion-function by @camc314 in #2100
• allow [...new Array(n)] in no-useless-spread by @Boshen in #2124
• not use new_inline with flexible str by @mysteryven in #2106

New Contributors

• @byteHulk made their first contribution in #2086

Full Changelog: oxlint_v0.2.2...oxlint_v0.2.3

oxlint v0.2.2

What's Changed

• fix(parser): fix crash on TSTemplateLiteralType in function return position by @Boshen in #2089
• feat(linter): improve no_redeclare rule implementation by @Dunqing in #2084
• refactor(linter): perfect the scope linter by @msdlisper in #2092
• fix(linter): s/consistent-type-export/consistent-type-exports by @Boshen in #2065
• feat(linter): eslint-plugin-import no-named-as-default-member rule by @XantreGodlike in #2071

New Contributors

• @CzhCN0 made their first contribution in #2054

Full Changelog: oxlint_v0.2.1...oxlint_v0.2.2

oxlint v0.2.1

Try it out!

• Run npx --yes oxlint@latest from your terminal
• Install the VSCode extension https://marketplace.visualstudio.com/items?itemName=oxc.oxc-vscode
• Read the usage guide

New Rules

• eslint-plugin-next: no-document-import-in-page by @kaykdm in #1997
• eslint-plugin-next: no-head-element by @kaykdm in #2006
• eslint-plugin-next: no-typos by @kaykdm in #1978
• eslint-plugin-jsx-a11y: aria-activedescendant-has-tabindex by @keita-hino in #2012
• eslint-plugin-jsx-a11y: click-events-have-key-events by @leaysgur in #1976
• eslint-plugin-jsx-a11y: no-redundant-roles rule by @yossydev in #1981
• eslint-plugin-import: no-named-as-default-member rule by @XantreGodlike in #1988

Improvements

Linter

• fix(linter) fix false positive for erasing-op in 0/0 case by @camc314 in #2009
• fix(linter): false positive for filename_case where filename doesn't have a proper casing by @Boshen in #2032
• fix(linter): keep rules disabled if the rule is not enabled in the config by @Boshen in #2031

41% faster after removing the --timings feature

• feat(linter): remove the --timings feature by @Boshen in #2049

Parser - 7% faster than the previous version

• perf(parser): reduce Token size from 16 to 12 bytes by @Boshen in #2010
• perf(parser): lexer byte handlers consume ASCII chars faster by @overlookmotel in #2046
• perf(parser): lexer match byte not char by @overlookmotel in #2025
• refactor(parser): lexer handle unicode without branch by @overlookmotel in #2039
• refactor(parser): remove extraneous code from regex parsing by @overlookmotel in #2008
• refactor(parser): remove noop code by @overlookmotel in #2028

Full Changelog: oxlint_v0.2.0...oxlint_v0.2.1

oxlint v0.2.0

Try it out!

• Run npx --yes oxlint@latest from your terminal
• Install the VSCode extension https://marketplace.visualstudio.com/items?itemName=oxc.oxc-vscode
• Read the usage guide

Better configuration support

oxlint -c ./eslintrc.json

will use the rules field for rule configuration, as documented in ESLint's documentation.

Unfortunately, only the json format is supported right now.

The extends field will not take effect; normal -D and -A flags still apply.

To add / remove / configure a rule:

{
  "rules": {
      "no-empty": "off", // removes the rule
      "no-empty": "error", // adds the rule
      "no-empty": ["error", { "allowEmptyCatch": true }]` configures the rule
  }
}

Next.js Plugin

oxlint --nextjs-plugin

• google-font-display by @camc314 in #1931
• google-font-preconnect by @camc314 in #1932
• inline-script-id by @camc314 in #1933
• next-script-for-ga by @camc314 in #1934
• no-assign-module-variable by @camc314 in #1935
• no-async-client-component by @camc314 in #1936
• no-css-tags by @camc314 in #1937
• no-head-import-in-document by @camc314 in #1957
• no-img-element by @camc314 in #1951
• no-script-component-in-head by @camc314 in #1954
• no-sync-scripts by @camc314 in #1953
• no-title-in-document-head by @camc314 in #1952

Vscode

• support vue, astro and svelte by @IWANABETHATGUY in #1923

New Rules

correctness

• react: require-render-return by @kaykdm in #1946
• react: no-direct-mutation-state by @zhangrunzhao in #1892
• typescript: triple-slash-reference by @kaykdm in #1903
• jsx-a11y: role-support-aria-props by @re-taro in #1961
• jsx-a11y: role-has-required-aria-props rule by @yossydev in #1881
• jsx-a11y: autocomplete-valid by @yossydev in #1901

restriction

• react: no-unknown-property by @XantreGodlike in #1875

style

• jest: no-test-return-statement by @eryue0220 in #1979

Fixes

Linter

• always print without considering the --max-warnings option by @Boshen in #1996
• support vue generic component by @Boshen in #1989
• Support cases where aria-hidden includes expressions by @keita-hino in #1964
• allow eslintrc to add rule when overriding by @fi3ework in #1984
• fix plugin name parsing when reading config file by @haocheng6 in #1972
• handle anonymous functional components in arrays that have a function body by @maurice in #1983

Parser

• unexpected ts type annotation in get/set by @Dunqing in #1942

Improvements

• Parser is 10% faster than the previous version
  • only allocate for escaped template strings by @Boshen in #2005
  • reduce Token size from 32 to 16 bytes by @Boshen in #1962
  • reduce work parsing regexps by @overlookmotel in #1999
  • remove TokenValue::BigInt from Token by @Boshen in #1924
  • remove TokenValue::Number from Token by @Boshen in #1945
  • remove TokenValue::RegExp from Token by @Boshen in #1926
  • remove string builder from number parsing by @Boshen in #2002

New Contributors

• @bmeck made their first contribution in #1950
• @leaysgur made their first contribution in #1965
• @keita-hino made their first contribution in #1964
• @kaykdm made their first contribution in #1946
• @underfin made their first contribution in #1967
• @fi3ework made their first contribution in #1984
• @luhc228 made their first contribution in #1993

Full Changelog: oxlint_v0.1.2...oxlint_v0.2.0

oxlint v0.1.2

Try it out!

• Run npx --yes oxlint@latest from your terminal
• Install the Vscode extension https://marketplace.visualstudio.com/items?itemName=oxc.oxc-vscode
• Read the usage guide

Svelte support

<script> tag is linted by default.

Features

• feat(linter): <script> part of svelte file by @Boshen in #1918
• feat(linter): disable no-unused-labels for svelte by @Boshen in #1919

Fixes

• fix(linter): change no-var to restriction bb6128b
• chore: add some useful informantion log by @IWANABETHATGUY in #1912
• fix(linter) fix eslint config for filename case by @camc314 in #1913

Full Changelog: oxlint_v0.1.1...oxlint_v0.1.2

oxlint v0.1.1

Try it out!

• Run npx --yes oxlint@latest from your terminal
• Install the Vscode extension https://marketplace.visualstudio.com/items?itemName=oxc.oxc-vscode
• Read the usage guide

Vue support

<script> and <script setup> are linted by default.

Astro support

Frontmatter component script --- and all <script> tags are linted by default.

Configuration files (experimental)

-c ./eslintrc.json will use the rules field for rule configuration, as documented in ESLint's documentation.

Unfortunately, only the json format is supported right now.

The extends field will not take effect; normal -D and -A flags still apply.

New Rules

Correctness

• deepscan: bad object literal comparison by @camc314 in #1844
• oxc: erasing op by @camc314 in #1834
• oxc: only used in recursion by @camc314 in #1833
• eslint: no irregular whitespace by @DeividAlmeida in #1877
• eslint: no-unused-private-class-members rule by @Dunqing in #1820
• eslint: no-var by @zhangrunzhao in #1890
• eslint-plugin-react: jsx-no-undef for by @XantreGodlike in #1862
• eslint-plugin-jsx-a11y: aria-role by @msdlisper in #1849
• eslint-plugin-jsx-a11y: lang by @msdlisper in #1812
• eslint-plugin-jsx-a11y: media-has-caption by @poteboy in #1822
• eslint-plugin-jsx-a11y: mouse-events-have-key-events(correctness) by @Ken-HH24 in #1867
• eslint-plugin-jsx-a11y: prefer-tag-over-role rule by @yossydev in #1831
• eslint-plugin-jsx-a11y: aria-unsupported-elements by @re-taro in #1855
• eslint-plugin-jsx-a11y: html_has_lang by @msdlisper in #1843

Suspicious

• oxc: approx constant by @camc314 in #1818
• oxc: misrefactored assign op by @camc314 in #1832

Restriction

• react: button has type by @camc314 in #1785
• unicorn: prefer modern math apis by @camc314 in #1620

Fixes

• fix(linter): ignore anonymous functional components in arrays for eslint-plugin-react(jsx-key) by @maurice in #1858
• Prioritize ignored paths when linting by @clarkf in #1878
• feat(linter): handle more cases for const-comparisons by @camc314 in #1817
• feat(semantic): allow reserved keyword defined in ts module block by @Dunqing in #1907
• fix(parser): error on source larger than 4 GiB by @overlookmotel in #1860
• fix(parser): fix incorrectly identified directives by @overlookmotel in #1885
• fix(parser): terminate parsing if an EmptyParenthesizedExpression error occurs by @Dunqing in #1874
• fix(semantic): remove duplicate errors in ModuleDeclaration::ImportDeclaration by @Dunqing in #1846
• perf(linter): reduce the number of diagnostics for no_sparse_arrays by @camc314 in #1895

New Contributors

• @maurice made their first contribution in #1858
• @re-taro made their first contribution in #1855
• @DeividAlmeida made their first contribution in #1835
• @XantreGodlike made their first contribution in #1862
• @Qix- made their first contribution in #1861
• @yossydev made their first contribution in #1831
• @clarkf made their first contribution in #1878
• @zhangrunzhao made their first contribution in #1890

Full Changelog: oxlint_v0.0.22...oxlint_v0.1.1

oxlint v0.0.22

What's Changed

New Rules

• no const comparisons by @camc314 in #1710

Reports errors when a comparison is redundant, or impossible.

A redundant check would be foo > 5 && foo > 10
An impossible check would be foo > 5 && foo < 5

https://rust-lang.github.io/rust-clippy/master/index.html#/redundant_comparisons
https://rust-lang.github.io/rust-clippy/master/index.html#/impossible

• no double comparisons by @camc314 in #1712

https://rust-lang.github.io/rust-clippy/master/index.html#/double_comparisons

• deepscan: bad char at comparison by @camc314 in #1750
• deepscan: bad replace all arg by @camc314 in #1749
• eslint-plugin-jsx-a11y: aria-props by @poteboy in #1797
• eslint-plugin-jsx-a11y: no-aria-hidden-on-focusable by @poteboy in #1795
• eslint-plugin-jsx-a11y: no-distracting-elements rule by @tapanprakasht in #1767

Performance

10 - 20% faster than the previous version.

Sampling from an internal codebase (119900 files) - Before 12.8s vs 11.2s after.

• precompute rule.name() by @Boshen in #1759
• reduce the RuleEnum enum size from 168 to 16 bytes by @Boshen in #1783

Improvements

• vscode: don't lint files in .gitignore and .eslintignore by @IWANABETHATGUY in #1765
• improve span for no useless catch by @camc314 in #1731
• no-cond-assign: span points to the operator by @Dunqing in #1739
• no-useless-escape support auto fix by @Dunqing in #1743
• improve span for no-unneccessary-await by @camc314 in #1732
• improve span of bad-remove-event-listener, merge rules by @camc314 in #1734
• shrink span for prefer-string-starts-with-ends-with by @camc314 in #1730
• improve the help message for const-comparisons by @Boshen in #1764
• use simd (memchr) for no-useless-escape search by @Boshen in #1766

Fixes

• skip run lint when --rules is passed by @camc314 in #1747
• conflict between --import-plugin and -D correctness by @camc314 in #1729
• support read the third item in config file by @mysteryven in #1771
• correct example and docs url for number_arg_out_of_range by @legend80s in #1737
• false positives for empty brace spaces by @camc314 in #1742
• fix incorrect report in prefer-string-replace-all by @camc314 in #1796
• fix a typo in no_redeclare message by @modderme123 in #1789
• eslint/no-obj-calls: correctly resolves the binding name by @Dunqing in #1738

parser

• refactor(ast): introduce ThisParameter by @magic-akari in #1728
• refactor(parser): report this parameter error by @magic-akari in #1788

New Contributors

• @legend80s made their first contribution in #1737
• @tapanprakasht made their first contribution in #1767
• @modderme123 made their first contribution in #1789
• @poteboy made their first contribution in #1795
• @overlookmotel made their first contribution in #1801

Full Changelog: oxlint_v0.0.21...oxlint_v0.0.22

oxlint v0.0.21

What's Changed

Features

Read eslint JSON configuration (experimental)

Added the configuration flag -c .eslintrc.json.

Oxlint will override all the enabled rules to what's specified in rules, e.g.

{
    "rules": {
        "eqeqeq": "off",
        "curly": "error",
        "quotes": ["error", "double"]
    }
}

• Parse eslint configuration by @camc314 in #1146
• Read jsx-a11y settings by @msdlisper in #1668

New Rules

• eslint-plugin-jsx-a11y: no-access-key (correctness) by @yoshi2no in #1708
• eslint-plugin-jsx-a11y: tabindex-no-positive (correctness) by @yoshi2no in #1677
• eslint-plugin-import: export rule (nursery) by @mysteryven in #1654
• eslint-plugin-unicorn: no-null (style) by @Ken-HH24 in #1705
• eslint-plugin-unicorn: prefer-dom-node-text-content (style) by @Ken-HH24 in #1658
• eslint-plugin-unicorn: prefer-prototype-methods (pedantic) by @haocheng6 in #1660

vscode

• use icon to represent enabled status by @IWANABETHATGUY in #1675
• add option to control enable/disable oxc linter by @IWANABETHATGUY in #1665
• report problem more accurately by @IWANABETHATGUY in #1681

Fixes

• fix(parser): false postive for "Missing initializer in const declaration" in declare + namespace by @Boshen in #1724
• convert catch error name to a warning by @camc314 in #1700
• Don't check for multiple bits at once. by @AndyA in #1688
• Fix false positives in prefer string start, ends with, port more test cases by @camc314 in #1689
• Panic in prefer string starts, ends with by @camc314 in #1684
• excape_case by @RiESAEX in #1673
• false positive in jsx key by @camc314 in #1686
• improve diagnostic for no useless spread by @camc314 in #1698
• perf(linter): find class node by symbols in get_parent_es6_component by @Dunqing in #1657
• refactor(linter): make some jest rules report more detailed by @mysteryven in #1666

New Contributors

• @HerringtonDarkholme made their first contribution in #1680
• @yoshi2no made their first contribution in #1677
• @fireairforce made their first contribution in #1682
• @AndyA made their first contribution in #1688

Full Changelog: oxlint_v0.0.20...oxlint_v0.0.21