npm · #3523 most downloaded on npm

oxlint

1.86.092M downloads/mooxc-project/oxc ↗New releases in your daily digest, changelog included.

Linter for the JavaScript Oxidation Compiler

Last release 6 days ago
28 Sep 2026
Ships on a steady schedule
a new release about every 2 weeks
Most releases are documented
notes for 43 of the last 60 stable releases
1 version withdrawn
withdrawn after publishing
3 years old
213 releases · first in 2023

Release timeline

213 releases since 2023

2023202420252026

20232026

One column per quarter.

Releases

0.2.525 Jan 2024
This release matched all linter rule names with their ESLint counterparts.
What's Changed

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

fix(linter): use correct rule name by @leaysgur in https://github.com/oxc-project/oxc/pull/2169

New Rules

react: jsx-no-target-blank by @hjiog in https://github.com/oxc-project/oxc/pull/2149

eslint: no-void by @eryue0220 in https://github.com/oxc-project/oxc/pull/2162

jest: prefer-called-with by @eryue0220 in https://github.com/oxc-project/oxc/pull/2163

Fixes

fix(linter): explicit-length-check inside ternary by @maurice in https://github.com/oxc-project/oxc/pull/2165

New Contributors

@xc2 made their first contribution in https://github.com/oxc-project/oxc/pull/2155

@hjiog made their first contribution in https://github.com/oxc-project/oxc/pull/2149

Full Changelog: https://github.com/oxc-project/oxc/compare/oxlint_v0.2.4...oxlint_v0.2.5
Open source →
0.2.423 Jan 2024
Fixed linux installation failures.
What's Changed

Fixed linux installation failures.

Full Changelog: https://github.com/oxc-project/oxc/compare/oxlint_v0.2.3...oxlint_v0.2.4

0.2.323 Jan 2024

`bash oxlint --react-perf-plugin `

What's Changed

New `eslint-plugin-react-perf`

oxlint --react-perf-plugin

eslint-plugin-react-perf by @byteHulk in https://github.com/oxc-project/oxc/pull/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 https://github.com/oxc-project/oxc/pull/2126

New Rules

jest: no-restricted-matchers by @eryue0220 in https://github.com/oxc-project/oxc/pull/2090
jest: no-restricted-jest-methods by @eryue0220 in https://github.com/oxc-project/oxc/pull/2091
import: no-named-as-default by @XantreGodlike in https://github.com/oxc-project/oxc/pull/2109
unicorn: promote no-new-array to correctness with better help message by @Boshen in https://github.com/oxc-project/oxc/pull/2123

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

Improvements

eslint config jsonc support by @Boshen in https://github.com/oxc-project/oxc/pull/2121
support eslint config in nextjs eslint by @kaykdm in https://github.com/oxc-project/oxc/pull/2107
complete img-redundant linter by @msdlisper in https://github.com/oxc-project/oxc/pull/2112

Fixes

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

New Contributors

@byteHulk made their first contribution in https://github.com/oxc-project/oxc/pull/2086

Full Changelog: https://github.com/oxc-project/oxc/compare/oxlint_v0.2.2...oxlint_v0.2.3

Open source →

Additional notes

Features

20a34b5 Introduce --react-perf-plugin CLI flag, update rules to correctness (#2119) (Hulk)

Open source →

0.2.116 Jan 2024

Run npx --yes oxlint@latest from your terminal

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 https://github.com/oxc-project/oxc/pull/1997
eslint-plugin-next: no-head-element by @kaykdm in https://github.com/oxc-project/oxc/pull/2006
eslint-plugin-next: no-typos by @kaykdm in https://github.com/oxc-project/oxc/pull/1978
eslint-plugin-jsx-a11y: aria-activedescendant-has-tabindex by @keita-hino in https://github.com/oxc-project/oxc/pull/2012
eslint-plugin-jsx-a11y: click-events-have-key-events by @leaysgur in https://github.com/oxc-project/oxc/pull/1976
eslint-plugin-jsx-a11y: no-redundant-roles rule by @yossydev in https://github.com/oxc-project/oxc/pull/1981
eslint-plugin-import: no-named-as-default-member rule by @XantreGodlike in https://github.com/oxc-project/oxc/pull/1988

Improvements

Linter

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

41% faster after removing the `--timings` feature

feat(linter): remove the --timings feature by @Boshen in https://github.com/oxc-project/oxc/pull/2049

Parser - 7% faster than the previous version

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

Full Changelog: https://github.com/oxc-project/oxc/compare/oxlint_v0.2.0...oxlint_v0.2.1

Open source →

0.2.012 Jan 2024

Run npx --yes oxlint@latest from your terminal

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 https://github.com/oxc-project/oxc/pull/1931
google-font-preconnect by @camc314 in https://github.com/oxc-project/oxc/pull/1932
inline-script-id by @camc314 in https://github.com/oxc-project/oxc/pull/1933
next-script-for-ga by @camc314 in https://github.com/oxc-project/oxc/pull/1934
no-assign-module-variable by @camc314 in https://github.com/oxc-project/oxc/pull/1935
no-async-client-component by @camc314 in https://github.com/oxc-project/oxc/pull/1936
no-css-tags by @camc314 in https://github.com/oxc-project/oxc/pull/1937
no-head-import-in-document by @camc314 in https://github.com/oxc-project/oxc/pull/1957
no-img-element by @camc314 in https://github.com/oxc-project/oxc/pull/1951
no-script-component-in-head by @camc314 in https://github.com/oxc-project/oxc/pull/1954
no-sync-scripts by @camc314 in https://github.com/oxc-project/oxc/pull/1953
no-title-in-document-head by @camc314 in https://github.com/oxc-project/oxc/pull/1952

Vscode

support vue, astro and svelte by @IWANABETHATGUY in https://github.com/oxc-project/oxc/pull/1923

New Rules

correctness

react: require-render-return by @kaykdm in https://github.com/oxc-project/oxc/pull/1946
react: no-direct-mutation-state by @zhangrunzhao in https://github.com/oxc-project/oxc/pull/1892
typescript: triple-slash-reference by @kaykdm in https://github.com/oxc-project/oxc/pull/1903
jsx-a11y: role-support-aria-props by @re-taro in https://github.com/oxc-project/oxc/pull/1961
jsx-a11y: role-has-required-aria-props rule by @yossydev in https://github.com/oxc-project/oxc/pull/1881
jsx-a11y: autocomplete-valid by @yossydev in https://github.com/oxc-project/oxc/pull/1901

restriction

react: no-unknown-property by @XantreGodlike in https://github.com/oxc-project/oxc/pull/1875

style

jest: no-test-return-statement by @eryue0220 in https://github.com/oxc-project/oxc/pull/1979

Fixes

Linter

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

Parser

unexpected ts type annotation in get/set by @Dunqing in https://github.com/oxc-project/oxc/pull/1942

Improvements

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

New Contributors

@bmeck made their first contribution in https://github.com/oxc-project/oxc/pull/1950
@leaysgur made their first contribution in https://github.com/oxc-project/oxc/pull/1965
@keita-hino made their first contribution in https://github.com/oxc-project/oxc/pull/1964
@kaykdm made their first contribution in https://github.com/oxc-project/oxc/pull/1946
@underfin made their first contribution in https://github.com/oxc-project/oxc/pull/1967
@fi3ework made their first contribution in https://github.com/oxc-project/oxc/pull/1984
@luhc228 made their first contribution in https://github.com/oxc-project/oxc/pull/1993

Full Changelog: https://github.com/oxc-project/oxc/compare/oxlint_v0.1.2...oxlint_v0.2.0

Open source →

0.1.16 Jan 2024

Run npx --yes oxlint@latest from your terminal

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

Suspicious

oxc: approx constant by @camc314 in https://github.com/oxc-project/oxc/pull/1818
oxc: misrefactored assign op by @camc314 in https://github.com/oxc-project/oxc/pull/1832

Restriction

react: button has type by @camc314 in https://github.com/oxc-project/oxc/pull/1785
unicorn: prefer modern math apis by @camc314 in https://github.com/oxc-project/oxc/pull/1620

Fixes

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

New Contributors

@maurice made their first contribution in https://github.com/oxc-project/oxc/pull/1858
@re-taro made their first contribution in https://github.com/oxc-project/oxc/pull/1855
@DeividAlmeida made their first contribution in https://github.com/oxc-project/oxc/pull/1835
@XantreGodlike made their first contribution in https://github.com/oxc-project/oxc/pull/1862
@Qix- made their first contribution in https://github.com/oxc-project/oxc/pull/1861
@yossydev made their first contribution in https://github.com/oxc-project/oxc/pull/1831
@clarkf made their first contribution in https://github.com/oxc-project/oxc/pull/1878
@zhangrunzhao made their first contribution in https://github.com/oxc-project/oxc/pull/1890

Full Changelog: https://github.com/oxc-project/oxc/compare/oxlint_v0.0.22...oxlint_v0.1.1

Open source →

Additional notes

What's Changed

chore(typo): expect -> except by @sno2 in https://github.com/Boshen/oxc/pull/415
feat(parser): parse const type parameter from TypeScript v5.0 by @Boshen in https://github.com/Boshen/oxc/pull/416

New Contributors

@sno2 made their first contribution in https://github.com/Boshen/oxc/pull/415

Full Changelog: https://github.com/Boshen/oxc/compare/v0.1.0...

Open source →

0.0.2225 Dec 2023

no const comparisons by @camc314 in https://github.com/oxc-project/oxc/pull/1710

What's Changed

New Rules

no const comparisons by @camc314 in https://github.com/oxc-project/oxc/pull/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 https://github.com/oxc-project/oxc/pull/1712

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

deepscan: bad char at comparison by @camc314 in https://github.com/oxc-project/oxc/pull/1750
deepscan: bad replace all arg by @camc314 in https://github.com/oxc-project/oxc/pull/1749
eslint-plugin-jsx-a11y: aria-props by @poteboy in https://github.com/oxc-project/oxc/pull/1797
eslint-plugin-jsx-a11y: no-aria-hidden-on-focusable by @poteboy in https://github.com/oxc-project/oxc/pull/1795
eslint-plugin-jsx-a11y: no-distracting-elements rule by @tapanprakasht in https://github.com/oxc-project/oxc/pull/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 https://github.com/oxc-project/oxc/pull/1759
reduce the RuleEnum enum size from 168 to 16 bytes by @Boshen in https://github.com/oxc-project/oxc/pull/1783

Improvements

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

Fixes

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

parser

refactor(ast): introduce ThisParameter by @magic-akari in https://github.com/oxc-project/oxc/pull/1728
refactor(parser): report this parameter error by @magic-akari in https://github.com/oxc-project/oxc/pull/1788

New Contributors

@legend80s made their first contribution in https://github.com/oxc-project/oxc/pull/1737
@tapanprakasht made their first contribution in https://github.com/oxc-project/oxc/pull/1767
@modderme123 made their first contribution in https://github.com/oxc-project/oxc/pull/1789
@poteboy made their first contribution in https://github.com/oxc-project/oxc/pull/1795
@overlookmotel made their first contribution in https://github.com/oxc-project/oxc/pull/1801

Full Changelog: https://github.com/oxc-project/oxc/compare/oxlint_v0.0.21...oxlint_v0.0.22

Open source →

0.0.2118 Dec 2023

Added the configuration flag -c .eslintrc.json.

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 https://github.com/oxc-project/oxc/pull/1146
Read jsx-a11y settings by @msdlisper in https://github.com/oxc-project/oxc/pull/1668

New Rules

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

vscode

use icon to represent enabled status by @IWANABETHATGUY in https://github.com/oxc-project/oxc/pull/1675
add option to control enable/disable oxc linter by @IWANABETHATGUY in https://github.com/oxc-project/oxc/pull/1665
report problem more accurately by @IWANABETHATGUY in https://github.com/oxc-project/oxc/pull/1681

Fixes

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

New Contributors

@HerringtonDarkholme made their first contribution in https://github.com/oxc-project/oxc/pull/1680
@yoshi2no made their first contribution in https://github.com/oxc-project/oxc/pull/1677
@fireairforce made their first contribution in https://github.com/oxc-project/oxc/pull/1682
@AndyA made their first contribution in https://github.com/oxc-project/oxc/pull/1688

Full Changelog: https://github.com/oxc-project/oxc/compare/oxlint_v0.0.20...oxlint_v0.0.21

Open source →

0.0.198 Dec 2023

Run npx --yes oxlint@latest from your terminal

Try it out!

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

New Rules

Performance

This is a new category turned off by default. See it in action with

npx --yes oxlint@latest -D perf

no accumulating spread by @DonIsaac in https://github.com/oxc-project/oxc/pull/1607

Did you know that the reudce + ...spread combo is an O(n^2) operation?

Read https://prateeksurana.me/blog/why-using-object-spread-with-reduce-bad-idea/ for detailed explaination.

noAccumulatingSpread is also part of Biome since v1.

Correctness

eslint-plugin-unicorn: no-useless-length check by @radu2147 in https://github.com/oxc-project/oxc/pull/1541
eslint-plugin-unicorn: no-useless-spread by @camc314 in https://github.com/oxc-project/oxc/pull/1638
eslint-plugin-unicorn: prefer-set-size by @camc314 in https://github.com/oxc-project/oxc/pull/1508
eslint-plugin-jsx-a11y: anchor-is-valid for by @msdlisper in https://github.com/oxc-project/oxc/pull/1477
eslint-plugin-jsx-a11y: heading-has-content for by @Ken-HH24 in https://github.com/oxc-project/oxc/pull/1501
eslint-plugin-jsx-a11y: iframe-has-title rule by @Shinyaigeek in https://github.com/oxc-project/oxc/pull/1589
eslint-plugin-jsx-a11y: img-redundant-alt by @Shinyaigeek in https://github.com/oxc-project/oxc/pull/1571
eslint-plugin-jsx-a11y: no-autofocus by @msdlisper in https://github.com/oxc-project/oxc/pull/1641
eslint-plugin-jsx-a11y: scope by @Shinyaigeek in https://github.com/oxc-project/oxc/pull/1609
eslint-plugin-react: no-is-mounted for by @Ken-HH24 in https://github.com/oxc-project/oxc/pull/1550

Pedantic

eslint-plugin-unicorn: prefer-native-coercion-functions (pedantic) by @camc314 in https://github.com/oxc-project/oxc/pull/1507
eslint-plugin-unicorn: no-unreadable-iife by @haocheng6 in https://github.com/oxc-project/oxc/pull/1572
eslint-plugin-unicorn: escape-case by @RiESAEX in https://github.com/oxc-project/oxc/pull/1495
eslint-plugin-unicorn: explicit-length-check by @RiESAEX in https://github.com/oxc-project/oxc/pull/1617

Suspicious

eslint: no-empty-static-block by @radu2147 in https://github.com/oxc-project/oxc/pull/1543

Restriction

eslint-plugin-unicorn: no-array-foreach by @camc314 in https://github.com/oxc-project/oxc/pull/1613
eslint-plugin-unicorn: no-array-reduce by @camc314 in https://github.com/oxc-project/oxc/pull/1610
eslint-plugin-unicorn: prefer number properties by @camc314 in https://github.com/oxc-project/oxc/pull/1614

Style

eslint-plugin-unicorn: no-await-expression-member by @Ken-HH24 in https://github.com/oxc-project/oxc/pull/1569
eslint-plugin-unicorn: no-unreadable-array-destructuring (style) by @Ken-HH24 in https://github.com/oxc-project/oxc/pull/1594
eslint-plugin-unicorn: numeric-separators-style (style) by @sirreal in https://github.com/oxc-project/oxc/pull/1490
eslint-plugin-unicorn: prefer-node-protocol by @IWANABETHATGUY in https://github.com/oxc-project/oxc/pull/1618
eslint-plugin-unicorn: prefer-reflect-apply(style) by @Ken-HH24 in https://github.com/oxc-project/oxc/pull/1628
eslint-plugin-unicorn: require-array-join-separator(style) by @Ken-HH24 in https://github.com/oxc-project/oxc/pull/1608

Fixes

feat(ast): implement new proposal-import-attributes by @magic-akari in https://github.com/oxc-project/oxc/pull/1476
fix(linter): fix panic in no hex escape by @camc314 in https://github.com/oxc-project/oxc/pull/1540

New Contributors

@JonaAnders made their first contribution in https://github.com/oxc-project/oxc/pull/1496
@Shinyaigeek made their first contribution in https://github.com/oxc-project/oxc/pull/1571
@milesj made their first contribution in https://github.com/oxc-project/oxc/pull/1510

Full Changelog: https://github.com/oxc-project/oxc/compare/oxlint_v0.0.18...oxlint_v0.0.19

Open source →

0.0.1822 Nov 2023Deprecated

eslint-plugin-jest: no-deprecated-function by @eryue0220 in https://github.com/oxc-project/oxc/pull/1316

Try it out!

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

oxlint has 78 correctness rules turned on by default, with 164 rules in total.

What's Changed

Features

Add --deny-warnings flag by @shannonrothe in https://github.com/oxc-project/oxc/pull/1452

If you wish to fail CI with exit code 1, pin oxlint to a version and use the --deny-warnings flag:

npx oxlint@0.0.18 --deny-warnings

Notice $? prints 1.

New Rules

Correctness

eslint-plugin-unicorn: no document cookie by @camc314 in https://github.com/oxc-project/oxc/pull/1255
eslint-plugin-unicorn: prefer string starts ends with by @camc314 in https://github.com/oxc-project/oxc/pull/1246
eslint-plugin-jsx-a11y: anchor-has-content by @msdlisper in https://github.com/oxc-project/oxc/pull/1431
eslint-plugin-jsx-a11y: html-has-lang for by @Ken-HH24 in https://github.com/oxc-project/oxc/pull/1436

Pedantic

eslint-plugin-unicorn: no lonely if by @camc314 in https://github.com/oxc-project/oxc/pull/1252
eslint-plugin-unicorn: no negated condition by @camc314 in https://github.com/oxc-project/oxc/pull/1253
eslint-plugin-unicorn: no this assignment by @camc314 in https://github.com/oxc-project/oxc/pull/1250
eslint-plugin-unicorn: no typeof undefined by @camc314 in https://github.com/oxc-project/oxc/pull/1251
eslint-plugin-unicorn: no useless promise resolve reject by @camc314 in https://github.com/oxc-project/oxc/pull/1254
eslint-plugin-unicorn: prefer array some by @camc314 in https://github.com/oxc-project/oxc/pull/1467
eslint-plugin-unicorn: prefer dom node append by @camc314 in https://github.com/oxc-project/oxc/pull/1256
eslint-plugin-unicorn: prefer dom node dataset by @camc314 in https://github.com/oxc-project/oxc/pull/1257
eslint-plugin-unicorn: prefer dom node remove by @camc314 in https://github.com/oxc-project/oxc/pull/1472
eslint-plugin-unicorn: prefer event target by @camc314 in https://github.com/oxc-project/oxc/pull/1465
eslint-plugin-unicorn: prefer math trunc by @camc314 in https://github.com/oxc-project/oxc/pull/1466
eslint-plugin-unicorn: prefer string replace all by @camc314 in https://github.com/oxc-project/oxc/pull/1248
eslint-plugin-unicorn: no useless switch case by @camc314 in https://github.com/oxc-project/oxc/pull/1463
eslint-plugin-unicorn: no-hex-escape by @RiESAEX in https://github.com/oxc-project/oxc/pull/1410

Restriction

eslint: no-regex-spaces by @ivov in https://github.com/oxc-project/oxc/pull/1129
eslint-plugin-unicorn: no-abusive-eslint-disable by @haocheng6 in https://github.com/oxc-project/oxc/pull/1125
eslint-plugin-unicorn: no-nested-ternary by @haocheng6 in https://github.com/oxc-project/oxc/pull/1417

Style

eslint plugin unicorn: empty-brace-spaces by @radu2147 in https://github.com/oxc-project/oxc/pull/1249
eslint plugin unicorn: no zero fractions by @camc314 in https://github.com/oxc-project/oxc/pull/1464
eslint plugin unicorn: prefer includes by @camc314 in https://github.com/oxc-project/oxc/pull/1471
eslint-plugin-unicorn: prefer string slice by @camc314 in https://github.com/oxc-project/oxc/pull/1247
eslint-plugin-unicorn: number-literal-case by @haocheng6 in https://github.com/oxc-project/oxc/pull/1271
eslint-plugin-jest: max_expects by @eryue0220 in https://github.com/oxc-project/oxc/pull/1239
eslint-plugin-jest: no-deprecated-function by @eryue0220 in https://github.com/oxc-project/oxc/pull/1316

Fixes

eslint(for-direction): add check for condition in reverse order by @ild0tt0re in https://github.com/oxc-project/oxc/pull/1418
Fix catch error name with parenthesis by @camc314 in https://github.com/oxc-project/oxc/pull/1242
Fix no instanceof array with parenthesis by @camc314 in https://github.com/oxc-project/oxc/pull/1243
Fix no object as default param with parenthesis by @camc314 in https://github.com/oxc-project/oxc/pull/1244
Fix prefer date now with parenthesis by @camc314 in https://github.com/oxc-project/oxc/pull/1245
Fix prefer logical operator error with parenthesis by @camc314 in https://github.com/oxc-project/oxc/pull/1241
Fix prefer type error with parenthesis by @camc314 in https://github.com/oxc-project/oxc/pull/1240
fix(parser): Disallow ReservedWord in NamedExports by @magic-akari in https://github.com/oxc-project/oxc/pull/1230

Misc

Rust v1.74.0 by @Boshen in https://github.com/oxc-project/oxc/pull/1357

New Contributors

@msdlisper made their first contribution in https://github.com/oxc-project/oxc/pull/1223
@radu2147 made their first contribution in https://github.com/oxc-project/oxc/pull/1249
@sirreal made their first contribution in https://github.com/oxc-project/oxc/pull/1416
@Ken-HH24 made their first contribution in https://github.com/oxc-project/oxc/pull/1436

Full Changelog: https://github.com/oxc-project/oxc/compare/oxlint_v0.0.17...oxlint_v0.0.18

Open source →

0.0.179 Nov 2023

Run npx --yes oxlint@latest from your terminal

Try it out!

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

What's Changed

Features

The final dot is no longer required by the CLI https://github.com/web-infra-dev/oxc/pull/1201:

npx oxlint@latest

This is the same as npx oxlint@latest ., where the current working directory will be scanned.

This is an alignment with ESLint v9, see https://eslint.org/blog/2023/11/whats-coming-in-eslint-9.0.0/#running-eslint-with-no-file-arguments

What's Changed

New rules by category

Style

eslint-plugin-unicorn: prefer-optional-catch-binding by @camc314 in https://github.com/web-infra-dev/oxc/pull/1188
eslint-plugin-unicorn: prefer-spread by @camc314 in https://github.com/web-infra-dev/oxc/pull/1186

Fixes

fix(linter): fix handling of repeated eslint-disable comments by @haocheng6 in https://github.com/web-infra-dev/oxc/pull/1200

Full Changelog: https://github.com/web-infra-dev/oxc/compare/oxlint_v0.0.16...oxlint_v0.0.17

Open source →

Additional notes

Features

d82ba5b cli: Run oxlint with no file arguments (#1201) (Boshen)

Open source →

0.0.168 Nov 2023

Run npx --yes oxlint@latest . from your terminal

Try it out!

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

What's Changed

Features

Use the following cli flags to enable the import / jest / jsx-a11y plugins

Enable Plugins
        --import-plugin       Enable the experimental import plugin and detect ESM problems
        --jest-plugin         Enable the Jest plugin and detect test problems
        --jsx-a11y-plugin     Enable the JSX-a11y plugin and detect accessibility problems

New rules by category (19 in total)

Correctness (turned on by default)

eslint-plugin-unicorn: no-invalid-remove-event-listener by @camc314 in https://github.com/web-infra-dev/oxc/pull/1147
eslint-plugin-unicorn: no-useless-fallback-in-spread @camc314 in https://github.com/web-infra-dev/oxc/pull/1176
eslint-plugin-jsx-a11y: alt-text by @manzt in https://github.com/web-infra-dev/oxc/pull/1126

Suspicious

eslint-plugin-unicorn: no-new-array by @camc314 in https://github.com/web-infra-dev/oxc/pull/1160
eslint-plugin-unicorn: prefer-add-event-listener by @camc314 in https://github.com/web-infra-dev/oxc/pull/1175

Pedantic

eslint-plugin-unicorn: prefer-type-error by @camc314 in https://github.com/web-infra-dev/oxc/pull/1149
eslint-plugin-unicorn: new-for-builtins by @camc314 in https://github.com/web-infra-dev/oxc/pull/1159
eslint-plugin-unicorn: no-new-buffer by @camc314 in https://github.com/web-infra-dev/oxc/pull/1174
eslint-plugin-unicorn: prefer-date-now by @camc314 in https://github.com/web-infra-dev/oxc/pull/1150
eslint-plugin-unicorn: prefer-regex-test by @camc314 in https://github.com/web-infra-dev/oxc/pull/1187
eslint-plugin-unicorn: no-static-only-class by @camc314 in https://github.com/web-infra-dev/oxc/pull/1161
eslint-plugin-unicorn: prefer-blob-reading-methods by @camc314 in https://github.com/web-infra-dev/oxc/pull/1168
eslint-plugin-unicorn: prefer-code-point by @camc314 in https://github.com/web-infra-dev/oxc/pull/1167
eslint-plugin-unicorn: no-object-as-default-parameter by @camc314 in https://github.com/web-infra-dev/oxc/pull/1162

Style

eslint-plugin-unicorn: prefer-string-trim-start-end by @camc314 in https://github.com/web-infra-dev/oxc/pull/1148
eslint-plugin-jest: prefer-todo rule by @eryue0220 in https://github.com/web-infra-dev/oxc/pull/1065
eslint-plugin-react(jsx_key): ignore ObjectProterty nodes by @yesmeck in https://github.com/web-infra-dev/oxc/pull/1139
eslint: default-case-last by @PerfectPan in https://github.com/web-infra-dev/oxc/pull/1156

Nursery

eslint-plugin-import: no-amd by @qinyuhang in https://github.com/web-infra-dev/oxc/pull/1171
eslint-plugin-jest: no-hooks by @eryue0220 in https://github.com/web-infra-dev/oxc/pull/1172

Fixes

reduce the lookup times of Call Expression in Jest rules by @mysteryven in https://github.com/web-infra-dev/oxc/pull/1184
parse configuration for unicorn/filename-case by @camc314 in https://github.com/web-infra-dev/oxc/pull/1145
fix covered span of eslint-disable-next-line comments by @haocheng6 in https://github.com/web-infra-dev/oxc/pull/1128

New Contributors

@Ubugeeei made their first contribution in https://github.com/web-infra-dev/oxc/pull/1136
@PerfectPan made their first contribution in https://github.com/web-infra-dev/oxc/pull/1156
@qinyuhang made their first contribution in https://github.com/web-infra-dev/oxc/pull/1171

Full Changelog: https://github.com/web-infra-dev/oxc/compare/oxlint_v0.0.15...oxlint_v0.0.16

Open source →

0.0.1530 Oct 2023

fix(linter) Improve span for jsx key by @camc314 in https://github.com/web-infra-dev/oxc/pull/1040

What's Changed

fix(linter) Improve span for jsx key by @camc314 in https://github.com/web-infra-dev/oxc/pull/1040
feat(linter): eslint-plugin-react/no-find-dom-node by @haocheng6 in https://github.com/web-infra-dev/oxc/pull/1031
reactor(linter): Refactor jsx key rule to use static_property_info by @camc314 in https://github.com/web-infra-dev/oxc/pull/1043
feat(linter): eslint-plugin-react(no-unescaped-entities) by @camc314 in https://github.com/web-infra-dev/oxc/pull/1044
feat(linter): support react/no-render-return-value by @Dunqing in https://github.com/web-infra-dev/oxc/pull/1042
feat(linter): eslint-plugin-react no-string-refs by @manzt in https://github.com/web-infra-dev/oxc/pull/1053
feat(linter): eslint-plugin-unicorn - no-empty-file by @camc314 in https://github.com/web-infra-dev/oxc/pull/1052
feat(linter) eslint-plugin-unicorn - text-encoding-identifier-case by @camc314 in https://github.com/web-infra-dev/oxc/pull/1051
feat(linter): support react/no-string-refs by @Dunqing in https://github.com/web-infra-dev/oxc/pull/1055
feat(linter) eslint-plugin-unicorn - prefer-logical-operator-over-ternary by @camc314 in https://github.com/web-infra-dev/oxc/pull/1064
fix(linter): noTemplateLiterals configuration in no_string_refs rule not working by @Dunqing in https://github.com/web-infra-dev/oxc/pull/1063
fix(linter) fix incorrect reporting for no_useless_escape by @camc314 in https://github.com/web-infra-dev/oxc/pull/1062
feat(linter): eslint-plugin-unicorn switch-case-braces by @Dywanoid in https://github.com/web-infra-dev/oxc/pull/1054
feat(linter): eslint-plugin-unicorn require-number-to-fixed-digits-argument by @Dywanoid in https://github.com/web-infra-dev/oxc/pull/1073
fix(linter) Fix panic on no_mixed_operators rule by @camc314 in https://github.com/web-infra-dev/oxc/pull/1094
fix(linter) Fix panic on no useless escape by @camc314 in https://github.com/web-infra-dev/oxc/pull/1092
fix(linter) Fix panic when using ban ts comment on conformace tests by @camc314 in https://github.com/web-infra-dev/oxc/pull/1097
fix(linter) Report error instead of panicing if the file fails to open by @camc314 in https://github.com/web-infra-dev/oxc/pull/1098
fix(linter): revert changes to JSX attribute strings by @Boshen in https://github.com/web-infra-dev/oxc/pull/1101
fix(linter): fix panic in no_unescaped_entities by @Boshen in https://github.com/web-infra-dev/oxc/pull/1103
fix(linter/no_empty_file): point to start of file instead of the entire file by @Boshen in https://github.com/web-infra-dev/oxc/pull/1105
feat(linter/no_children_prop): point the span to "children" by @Boshen in https://github.com/web-infra-dev/oxc/pull/1106
feat(linter): support unicorn/prefer-query-selector by @Dunqing in https://github.com/web-infra-dev/oxc/pull/1068
feat(linter): demote prefer_array_flat_map to style by @Boshen in https://github.com/web-infra-dev/oxc/pull/1108
fix(linter/no_render_return_value): fix false positive when nested inside an arrow expression by @Boshen in https://github.com/web-infra-dev/oxc/pull/1109
chore(linter/no_unescaped_entities): demote to pedantic by @Boshen in https://github.com/web-infra-dev/oxc/pull/1110
fix(linter/no-render-return-value): remove duplicate test case by @Dunqing in https://github.com/web-infra-dev/oxc/pull/1111
feat(linter): change some rules pedantic and improve help message by @Boshen in https://github.com/web-infra-dev/oxc/pull/1112
chore(linter): move all import plugin rules to nursery by @Boshen in https://github.com/web-infra-dev/oxc/pull/1113

New Contributors

@Dywanoid made their first contribution in https://github.com/web-infra-dev/oxc/pull/1054
@ivov made their first contribution in https://github.com/web-infra-dev/oxc/pull/1096

Full Changelog: https://github.com/web-infra-dev/oxc/compare/oxlint_v0.0.14...oxlint_v0.0.15

Open source →

0.0.1423 Oct 2023

npx --yes oxlint@latest . in your JavaScript / TypeScript codebase and see it complete in milliseconds. No configurations required.

Try it out!

Run

npx --yes oxlint@latest . in your JavaScript / TypeScript codebase and see it complete in milliseconds. No configurations required.
npx oxlint@latest --help for usage instructions.
npx oxlint@latest --rules for list of rules.

What's Changed

Linter

New Rules

typescript-eslint: ban-types by @camc314 in https://github.com/web-infra-dev/oxc/pull/953
eslint-plugin-jest: valid-expect by @mysteryven in https://github.com/web-infra-dev/oxc/pull/941
eslint-plugin-jest: no-identical-title by @mysteryven in https://github.com/web-infra-dev/oxc/pull/957
eslint-plugin-jest: valid-title by @mysteryven in https://github.com/web-infra-dev/oxc/pull/966
eslint-plugin-jest: no-confusing-set-timeout by @eryue0220 in https://github.com/web-infra-dev/oxc/pull/938
eslint-plugin-unicorn: filename-case by @Boshen in https://github.com/web-infra-dev/oxc/pull/978
eslint-plugin-unicorn: catch-error-name by @camc314 in https://github.com/web-infra-dev/oxc/pull/984
eslint-plugin-unicorn: no-console-spaces by @camc314 in https://github.com/web-infra-dev/oxc/pull/991
eslint-plugin-unicorn: error-message by @camc314 in https://github.com/web-infra-dev/oxc/pull/992
eslint-plugin-unicorn: prefer-array-flat-map by @camc314 in https://github.com/web-infra-dev/oxc/pull/997
eslint-plugin-unicorn: throw-new-error by @camc314 in https://github.com/web-infra-dev/oxc/pull/1005
eslint-plugin-react: jsx-key by @camc314 in https://github.com/web-infra-dev/oxc/pull/1016
eslint-plugin-react: no-children-prop by @camc314 in https://github.com/web-infra-dev/oxc/pull/1015
eslint-plugin-react: no-useless-fragment by @camc314 in https://github.com/web-infra-dev/oxc/pull/1021
eslint-plugin-react: jsx-no-duplicate-props by @camc314 in https://github.com/web-infra-dev/oxc/pull/1024
eslint-plugin-react: no-dangerously-set-inner-html by @camc314 in https://github.com/web-infra-dev/oxc/pull/1029
eslint-plugin-react: jsx-no-comment-text-nodes by @camc314 in https://github.com/web-infra-dev/oxc/pull/1027

Fixes

fix panic when no paths are provided by @camc314 in https://github.com/web-infra-dev/oxc/pull/944
Fix oxlint --quiet suppressing errors by @developit in https://github.com/web-infra-dev/oxc/pull/1008
fix panic with strip_prefix by @Boshen in https://github.com/web-infra-dev/oxc/pull/1013
fix panic when linting declaration files by @camc314 in https://github.com/web-infra-dev/oxc/pull/1014
incorrect reporting for jsx_key by @camc314 in https://github.com/web-infra-dev/oxc/pull/1020

Parser

feat(parser): TypeScript 5.2 by @camc314 in https://github.com/web-infra-dev/oxc/pull/811
fix(lexer) Fix spans for jsx children by @camc314 in https://github.com/web-infra-dev/oxc/pull/1030

New Contributors

@camc314 made their first contribution in https://github.com/web-infra-dev/oxc/pull/944

Full Changelog: https://github.com/web-infra-dev/oxc/compare/oxlint_v0.0.13...oxlint_v0.0.14

Open source →

0.0.1329 Sept 2023

feat(linter): add typescript/no-explicit-any by @DonIsaac in https://github.com/web-infra-dev/oxc/pull/881

What's Changed

feat(linter): add typescript/no-explicit-any by @DonIsaac in https://github.com/web-infra-dev/oxc/pull/881
feat(linter): eslint-plugin-import(no-cycle) by @Boshen in https://github.com/web-infra-dev/oxc/pull/890
feat(linter): add eslint-plugin-import/default by @mysteryven in https://github.com/web-infra-dev/oxc/pull/895
feat(linter): add no-console rule by @todor-a in https://github.com/web-infra-dev/oxc/pull/887
feat(linter): implement eslint-plugin-unicorn/no-thenable rule by @Devin-Yeung in https://github.com/web-infra-dev/oxc/pull/910
Fix: return 0 exit code when warnings<max_warnings by @developit in https://github.com/web-infra-dev/oxc/pull/933

Performance

perf(cli): force terminal_links to reduce sys calls by @Boshen in https://github.com/web-infra-dev/oxc/pull/911
perf(lexer): remove an extra branch from identifier_name_handler by @Boshen in https://github.com/web-infra-dev/oxc/pull/912
perf(lexer): only check the first lower case for match_keyword by @Boshen in https://github.com/web-infra-dev/oxc/pull/913
perf(parser): remove an extra branch from parse_member_expression_rhs hot path by @Boshen in https://github.com/web-infra-dev/oxc/pull/896
perf(lexer): reduce an extra branch from peek by @Boshen in https://github.com/web-infra-dev/oxc/pull/841
perf(linter): swap the order of checks for no_caller by @Boshen in https://github.com/web-infra-dev/oxc/pull/844
perf(linter): parse ts-directive manually by @Devin-Yeung in https://github.com/web-infra-dev/oxc/pull/845

Parser Fixes

fix(parser): parse [+In] in object binding initializer by @Boshen in https://github.com/web-infra-dev/oxc/pull/874
fix: ts parsing error by @IWANABETHATGUY in https://github.com/web-infra-dev/oxc/pull/940

New Contributors

@todor-a made their first contribution in https://github.com/web-infra-dev/oxc/pull/887
@IWANABETHATGUY made their first contribution in https://github.com/web-infra-dev/oxc/pull/927
@developit made their first contribution in https://github.com/web-infra-dev/oxc/pull/933
@eryue0220 made their first contribution in https://github.com/web-infra-dev/oxc/pull/683

Full Changelog: https://github.com/web-infra-dev/oxc/compare/oxlint_v0.0.12...oxlint_v0.0.13

Open source →

0.0.821 Aug 2023

Run npx oxlint@latest . in your JavaScript / TypeScript codebase and see it complete in milliseconds. No configurations are required.

Try it out!

Run npx oxlint@latest . in your JavaScript / TypeScript codebase and see it complete in milliseconds. No configurations are required.

Oxlint now has 56 recommended rules by default, out of 82 in total.

6 New Lint Rules

eslint/no-extra-boolean-cast @metreniuk
eslint/no-loss-of-precision @Devin-Yeung
typescript/no-duplicate-enum-values @Thiry1
typescript/no-namespace @metreniuk
typescript/prefer-as-const @Thiry1
unicorn/no-instanceof-array @Thiry1

Smaller Binary Size (50 - 100KB less)

Thanks to bpaf by @pacak, the binary size is 50 - 100KB smaller after the removal of clap.

Better help message

Use --help, and also --help --help for detailed explanation.

New Contributors

@metreniuk made their first contribution in https://github.com/web-infra-dev/oxc/pull/677
@hyf0 made their first contribution in https://github.com/web-infra-dev/oxc/pull/701
@Thiry1 made their first contribution in https://github.com/web-infra-dev/oxc/pull/707
@lovebaihezi made their first contribution in https://github.com/web-infra-dev/oxc/pull/728
@EYHN made their first contribution in https://github.com/web-infra-dev/oxc/pull/763

Full Changelog: https://github.com/web-infra-dev/oxc/compare/oxlint_v0.0.7...oxlint_v0.0.8

Open source →

0.0.729 Jul 2023

Fixed CLI --help not working propertly

What's Changed

Fixed CLI --help not working propertly

Open source →

Additional notes

Try it out!

Run npx oxlint@latest . in your own JavaScript / TypeScript codebase and see it complete in milliseconds. No configurations are required.

Oxlint now has 50 recommended run by default, out of 71 in total.

9 New Lint Rules

Correctness (Run by default)

Profile Rule Performance `TIMING=1`

Performance of individual rules can now be tracked by using the same ESLint environment variable TIMING=1. See the ESLint documentation for details. This feature is initiated by @shannonrothe .

Stable Rust

This binary is now built with stable instead nightly Rust. Thank you for the initiative @josephsavona. Thank you @strager and @suica who made significant contributions.

All features in this release are implemented by community contributors, thank you all for the contribution. A special thank you is extended to @DonIsaac, whose assistance was invaluable during this release.

New Contributors

@lukeed made their first contribution in https://github.com/web-infra-dev/oxc/pull/505
@DonIsaac made their first contribution in https://github.com/web-infra-dev/oxc/pull/508
@EliLichtblau made their first contribution in https://github.com/web-infra-dev/oxc/pull/526
@vagusX made their first contribution in https://github.com/web-infra-dev/oxc/pull/529
@makotot made their first contribution in https://github.com/web-infra-dev/oxc/pull/575
@Leonard53 made their first contribution in https://github.com/web-infra-dev/oxc/pull/574
@suica made their first contribution in https://github.com/web-infra-dev/oxc/pull/629
@strager made their first contribution in https://github.com/web-infra-dev/oxc/pull/628
@SoonIter made their first contribution in https://github.com/web-infra-dev/oxc/pull/624
@Devin-Yeung made their first contribution in https://github.com/web-infra-dev/oxc/pull/649

Full Changelog: https://github.com/web-infra-dev/oxc/compare/oxlint_v0.0.6...oxlint_v0.0.7

Open source →

0.0.61 Jul 2023

This release adds 4 typescript-eslint rules without any performance impact:

• @typescript/no-empty-interface • @typescript/no-extra-non-null-assertion • @typescript/no-non-null-asserted-optional-chain • @typescript/no-unnecessary-type-constraint

There are now 45 rules in total.

Try it out! Run the following command In any of your repo:

npx oxlint@latest .

Full Changelog: https://github.com/Boshen/oxc/compare/oxlint_v0.0.4...oxlint_v0.0.5

Open source →

Additional notes

What's Changed

feat(semantic): parse jsdoc comments by @shannonrothe in https://github.com/Boshen/oxc/pull/205
refactor(benchmark): add more benchmark files by @Boshen in https://github.com/Boshen/oxc/pull/275
feat: add cargo minsize task for tracking minification size by @Boshen in https://github.com/Boshen/oxc/pull/276
feat(linter): implement no-shadow-restricted-names by @CarrotzRule123 in https://github.com/Boshen/oxc/pull/277
feat(coverage): add jsx printing tests by @Boshen in https://github.com/Boshen/oxc/pull/279
feat(linter): implement DeepScan bad comparison sequence rule by @mysteryven in https://github.com/Boshen/oxc/pull/280
feat(linter): implement no-unused-labels by @CarrotzRule123 in https://github.com/Boshen/oxc/pull/282
docs: Update CONTRIBUTING.md by @ild0tt0re in https://github.com/Boshen/oxc/pull/288
chore(minifier): add test fixture by @Boshen in https://github.com/Boshen/oxc/pull/287
ci: cache by @Boshen in https://github.com/Boshen/oxc/pull/289
feat(tasks): add minifier coverage test by @Boshen in https://github.com/Boshen/oxc/pull/292
feat(cli): add --rules CLI flag by @shannonrothe in https://github.com/Boshen/oxc/pull/290
ci: run codecov on PR by @Boshen in https://github.com/Boshen/oxc/pull/294
feat(cli): test print rules by @Boshen in https://github.com/Boshen/oxc/pull/295
feat(printer,semantic): mangler by @Boshen in https://github.com/Boshen/oxc/pull/285
chore(linter): add test to ensure documentation exists by @Boshen in https://github.com/Boshen/oxc/pull/296
chore(ast): remove unused NumberLiteral::to_string by @Boshen in https://github.com/Boshen/oxc/pull/298
Website by @Boshen in https://github.com/Boshen/oxc/pull/281
chore: bump nightly to nightly-2023-04-20 by @Boshen in https://github.com/Boshen/oxc/pull/304
feat(linter): bad array method on arguments by @mysteryven in https://github.com/Boshen/oxc/pull/303
feat: napi by @Boshen in https://github.com/Boshen/oxc/pull/302

New Contributors

@CarrotzRule123 made their first contribution in https://github.com/Boshen/oxc/pull/277
@ild0tt0re made their first contribution in https://github.com/Boshen/oxc/pull/288

Full Changelog: https://github.com/Boshen/oxc/compare/v0.0.5...

Open source →

0.0.51 Jul 2023

Try it out! In any of your repo:

npx oxlint@latest .

This release adds 8 new rules (with 41 rules in total):

no-useless-catch
no-unsafe-finally
no-self-assign
no-cond-assign
no-dupe-else-if
no-inner-declarations
no-useless-escape
no-prototype-builtins

Full Changelog: https://github.com/Boshen/oxc/compare/oxlint_v0.0.4...oxlint_v0.0.5

Open source →

Additional notes

What's Changed

fix(parser): fix additional char being consumed in JSXText by @yesmeck in https://github.com/Boshen/oxc/pull/259
fix(parser): fix crashing on empty ParenthesizedExpression with comments by @Boshen in https://github.com/Boshen/oxc/pull/263
fix(parser): fix parse error on JSXText preceded by JSXFragment by @yesmeck in https://github.com/Boshen/oxc/pull/262
fix(linter): fix panic when directive appears at the first line by @yesmeck in https://github.com/Boshen/oxc/pull/264
fix(parser): fix [+in] context in CallArguments by @Boshen in https://github.com/Boshen/oxc/pull/265
fix(paresr): parse [+In] in template by @Boshen in https://github.com/Boshen/oxc/pull/266
fix(parser): fix [+In] Destructuring Binding Pattern Initializer by @Boshen in https://github.com/Boshen/oxc/pull/267
feat(linter): no constant condition by @mysteryven in https://github.com/Boshen/oxc/pull/271
feat(semantic): Add index mapping from span to reference id by @YangchenYe323 in https://github.com/Boshen/oxc/pull/270
refactor(linter,semantic): move syntax check from linter to semantic by @Boshen in https://github.com/Boshen/oxc/pull/272

New Contributors

@yesmeck made their first contribution in https://github.com/Boshen/oxc/pull/259

Full Changelog: https://github.com/Boshen/oxc/compare/v0.0.4...

Open source →

0.0.428 Jun 2023

Try it out! In any of your codebase:

npx oxlint@latest .

This release adds 5 new rules:

no-case-declarations by @cijiugechu
no-ex-assign by @cijiugechu
require-yield by @Boshen
no-sparse-array by @Boshen
no-delete-var by @Boshen

Full Changelog: https://github.com/Boshen/oxc/compare/oxlint_v0.0.3...oxlint_v0.0.4

Open source →

Additional notes

What's Changed

feat(linter): bad bitwise operator rule by @mysteryven in https://github.com/Boshen/oxc/pull/246
perf(semantics): avoid hashing when resolving references by @YangchenYe323 in https://github.com/Boshen/oxc/pull/248
refactor(ast): make BoundNames take a closure so it does not allocate by @Boshen in https://github.com/Boshen/oxc/pull/249
refactor(parser): clean up parsing of ForStatement by @Boshen in https://github.com/Boshen/oxc/pull/251
Fuzz async by @Boshen in https://github.com/Boshen/oxc/pull/257

Full Changelog: https://github.com/Boshen/oxc/compare/v0.0.3...

Open source →

0.0.327 Jun 2023

no_function_assign #220 @RiESAEX

What's Changed

New Lints

no-bitwise #228 @mysteryven
no_function_assign #220 @RiESAEX
array-callback-return #221 @YangchenYe323

Linter

Skip syntax error checks in TypeScript definition files #219
fix nullish coalescing operator precedence #240 @ashsearle

Parser

Fixed crashes on some multi-byte chars
100% TypeScript parsing conformance

New Contributors

@mysteryven made their first contribution in https://github.com/Boshen/oxc/pull/219
@ashsearle made their first contribution in https://github.com/Boshen/oxc/pull/240

Full Changelog: https://github.com/Boshen/oxc/compare/v0.0.2...

Open source →

Additional notes

Try it out! In any of your codebase:

npx oxlint@latest .

This release supports 31 correctness rules:

npx oxlint@latest --rules

Correctness (31):

deepscan/bad-array-method-on-arguments
deepscan/bad-comparison-sequence
deepscan/bad-min-max-func
deepscan/bad-remove-event-listener
deepscan/missing-throw
deepscan/number-arg-out-of-range
deepscan/uninvoked-array-callback
eslint/constructor-super
eslint/for-direction
eslint/getter-return
eslint/no-async-promise-executor
eslint/no-caller
eslint/no-class-assign
eslint/no-compare-neg-zero
eslint/no-const-assign
eslint/no-constant-binary-expression
eslint/no-constant-condition
eslint/no-debugger
eslint/no-dupe-class-members
eslint/no-dupe-keys
eslint/no-duplicate-case
eslint/no-empty-pattern
eslint/no-function-assign
eslint/no-new-symbol
eslint/no-self-compare
eslint/no-setter-return
eslint/no-shadow-restricted-names
eslint/no-unsafe-negation
eslint/no-unused-labels
eslint/use-isnan
eslint/valid-typeof

Open source →

0.0.227 Jun 2023

` npx oxidation-compiler@latest lint path-to-directory `

Try it out!

npx oxidation-compiler@latest lint path-to-directory

No configuration is required.

What's Changed

Initial Support for Isolated Declarations

npx oxidation-compiler@latest lint -A all -D isolated-declaration src

Complete Conformance on Test262

Test262 Summary:
AST Parsed     : 44000/44000 (100.00%)
Positive Passed: 44000/44000 (100.00%)
Negative Passed: 3915/3915 (100.00%)

News Lints

no-caller #178 @jason89521
no-duplicate-case #179 @jason89521
no-async-promise-executor #180 @magic-akari
no-compare-neg-zero #185 @YangchenYe323
no-unsafe-negation #186 @YangchenYe323
no-dupe-keys #188 @jason89521
no-dupe-class-members #195 @YangchenYe323
no-const-assign #199 @YangchenYe323
no-new-symbol #201 @jason89521
valid-typeof #202 @RiESAEX
no-class-assign #204 @YangchenYe323
isolated-declaration #209 @YangchenYe323

New Features

Added support for ESLint disable comments
Added support for Clippy style allow / deny rules, e.g. --allow all --deny no-debugger to enable a single rule

Misc

Changed some color displays diagnostic printing, the titles are now in bright red or yellow
Made the CI run faster by using pre-built binaries on cargo-udeps, criptcmp and cargo-testest.

New Contributors

@KasperZutterman made their first contribution in https://github.com/Boshen/oxc/pull/193
@RiESAEX made their first contribution in https://github.com/Boshen/oxc/pull/202

Full Changelog: https://github.com/Boshen/oxc/compare/v0.0.1...

Open source →

oxlint

Release timeline

Releases

What's Changed

New Rules

Fixes

New Contributors

What's Changed

Bug Fixes

What's Changed

New eslint-plugin-react-perf

Differenciate linux gnu / musl binary targets

New Rules

Improvements

Fixes

New Contributors

Features

What's Changed

New Contributors

Try it out!

New Rules

Improvements

Linter

41% faster after removing the --timings feature

Parser - 7% faster than the previous version

Try it out!

Better configuration support

Next.js Plugin

Vscode

New Rules

correctness

restriction

style

Fixes

Linter

Parser

Improvements

New Contributors

Try it out!

Svelte support

Features

Fixes

Try it out!

Vue support

Astro support

Configuration files (experimental)

New Rules

Correctness

Suspicious

Restriction

Fixes

New Contributors

What's Changed

New Contributors

New Contributors

What's Changed

New Rules

Performance

Improvements

Fixes

parser

New Contributors

What's Changed

Features

Read eslint JSON configuration (experimental)

New Rules

vscode

Fixes

New Contributors

What's Changed

Try it out!

New Rules

Performance

Correctness

Pedantic

Suspicious

Restriction

Style

Fixes

New Contributors

New `eslint-plugin-react-perf`

41% faster after removing the `--timings` feature

Profile Rule Performance `TIMING=1`