If I Wrote a Linter, Part 1: Architecture | Goldblog
This how I would architect a modern linter from scratch: focusing on built-in TypeScript support, a straightforward rule development experience, and deduplicating tooling. Today’s web linters are great. ESLint is robust and has a huge ecosystem of plugins and configs. Newer native speed linters such as Biome, deno lint, and Oxlint are fast and easy to set up with their own burgeoning ecosystems. I
Suppressions of Suppressions — overreacted
Usually, when we think about build failures, we think about things like syntax errors. Or maybe “module not found” errors. You don’t want to forget to check in the files that you’re using. Better a build error now than a crash later. We can also think of a broader set of cases where we want to fail the build—even if it technically “builds”. For example, if the linting fails, you probably don’t wan
Announcing Oxlint 1.0
TL;DR: The first stable version Oxlint has been released! With a 50~100x performance improvement over ESLint, support for over 500 ESLint rules, and usage in major companies like Shopify, Airbnb, and Mercedes-Benz, you should give it a try. Get started now. Oxlint is a Rust-powered linter for JavaScript and TypeScript is designed to be fast and simple to adopt. Since its first announcement back in
ESLint v9.0.0: A retrospective - ESLint - Pluggable JavaScript Linter
In April 2024, we released ESLint v9.0.0, our first major release in nearly three years. The key feature of v9.0.0 would be the new configuration system, which had received positive reviews while in development. While we anticipated a smooth launch, the release quickly proved challenging. Initial online sentiment was largely negative, with users saying v9.0.0 “wasn’t ready,” “didn’t work,” or even
ESLint can now lint HTML using the html-eslint language plugin - ESLint - Pluggable JavaScript Linter
In 2024, ESLint announced its plan to become a language-agnostic linter that is capable of linting languages other than JavaScript. Since then, we’ve seen official support added for JSON and Markdown, and most recently, CSS. Today, I’m excited to share that html-eslint now provides an ESLint language plugin for linting HTML. Linting HTML with html-eslint The @html-eslint/eslint-plugin package prov
ESLint v9.26.0 released - ESLint - Pluggable JavaScript Linter
Highlights MCP Server Integration ESLint v9.26.0 adds support for a Model Context Protocol (MCP) server, enabling ESLint to interact with AI models and tools through a unified interface. This feature allows large language models (LLMs) to run ESLint in IDEs and other software, assisting developers with tasks like linting and code analysis. The MCP server can be started using the --mcp flag in the
tsconfig.json paths やめ方
tsconfig.jsonのpaths設定でimport文にエイリアスを使えるようにしたものの、 tscでトランスパイルするとエイリアス形式のパスは変換されない パスの変換のためにtsconfig-pathsなどの追加ライブラリが必要で、ビルドコマンドが冗長になる jestなどはpathsを反映するために追加設定が必要 などで微妙な気持ちになってきたことはありませんか。 一度導入すると利用箇所が結構多くなってきて手動で戻すには大変すぎるし、まあ動いてるからいいか...みたいな。 そんな時のために自動で相対パスに戻せるeslintプラグインを作ってみました。 やめ方 @mkizka/eslint-plugin-relative-import を入れてeslint --fixするだけ。 設定は↓のような感じです。 // eslint.config.js import { relativeImp
Introducing bulk suppressions - ESLint - Pluggable JavaScript Linter
At some point, every development team faces the same challenge: you want to enable a new ESLint rule to improve code quality, but your existing codebase already contains numerous violations. When the rule isn’t auto-fixable, the path to enabling it as an error can be challenging. Today, we’re excited to introduce ESLint’s new violation suppression system, designed to make adopting stricter linting
The JavaScript Oxidation Compiler
For more detailed instructions on how to use Oxlint and integrate it with your project or editor, check out the installation guide. Highlight of new features since general availability Significant performance improvements, up to twice as fast compared to the previous releaseIncludes over 500 rules built-in, with no extra installation requiredMany rules from the typescript, unicorn, react, react-p
oxlint で eslint を高速化させる
rust 製の爆速 Linter こと oxlint で eslint を高速化したいんじゃ！！！ というわけでレッツゴー！ eslint + typescript-eslint は遅い JavaScript におけるリンターのデファクトとなっている ESLint また ESLint に TypeScript 対応を拡張する typescript-eslint も広く使われている typescript-eslint がやってくれることは以下の 2 つ TypeScript 構文を解析して AST を作成する 型情報 Lint ルールの追加 しかしながら、いかんせんこの 2 つを組み合わせると遅いのである oxlint の特徴 爆速(ESLint の 50~100 倍速い) eslint や eslint プラグインに基づく 480 以上のルールをデフォルトで搭載 eslint のエコシステ
Release v8.26.0 · typescript-eslint/typescript-eslint
8.26.0 (2025-03-03) 🚀 Features support TypeScript 5.8 (#10903) eslint-plugin: [no-unnecessary-type-parameters] special case tuples and parameter location arrays as single-use (#9536) eslint-plugin: [no-unused-var] handle implicit exports in declaration files (#10714) eslint-plugin: [explicit-module-boundary-types] add an option to ignore overload implementations (#10889) eslint-plugin: [unified-s
Publish a lint rule, get a prize | Deno
UPDATE 2025/3/5: The Lint Rules Contest is over! We received a bunch of great submissions (and some cheeky playful ones that made us smile)! Your lint plugins ranged from solving personal needs, to porting rules from ESLint, and more. Some notable ones to call out: @armaanas/no-empty-function: A simple rule that warns on any empty functions @sakgoyal/use-nullish: enforces the use of Nullish Coales
2025-02-24のJS: Create React Appが非推奨に、Deno 2.2、Bun 1.2.3、ESLintのCSSサポート
JSer.info #726 - Create React Appが非推奨となりました。 Sunsetting Create React App – React create-react-appは非推奨となり、Reactを使ったフレームワークやVite/Parcel/Rsbuildなどのビルドツールへの移行が推奨されています。 Deno 2.2がリリースされました。 Deno 2.2: OpenTelemetry, Lint Plugins, node:sqlite lintのビルトインルールの追加、JavaScriptで書けるLint Plugin APIの追加、deno taskがwildcard(*)指定に対応しています。 また、deno outdatedにinteractive modeを追加、deno compileの改善なども含まれています。 unstableな機能としてOpe
ESLint now officially supports linting of CSS - ESLint - Pluggable JavaScript Linter
Back in July of 2024 we announced our plan to make ESLint a more general-purpose linter that is capable of linting any language. In October 2024, we announced linting support for JSON and Markdown, delivering on that vision. Today, we’re excited to add to the list of supported languages with the introduction of CSS support. CSS linting with @eslint/css CSS linting is accomplished using the @eslint
eslint-plugin-no-barrel-filesを導入してBarrel filesをやめた話 | PR TIMES 開発者ブログ
こんにちは、フロントエンドエンジニアのやなぎ（@apple_yagi）です。 PR TIMESではフロントエンドのReactリプレイス当初より Barrel file を作成するルールがありました。しかし、先日そのルールを廃止することに決めたため、その経緯についてご紹介します。 Barrel filesとは Barrel filesとは複数のモジュールを1つのファイル（Barrel file）にまとめてexportすることを指します。以下の例ではutils/test.ts 、utils/fuga.ts 、utils/hoge.ts で export されている定数を utils/index.ts で再exportしています。 // utils/test.ts export const test = 1; // utils/fuga.ts export const fuga = 2; //
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GitHub - web-infra-dev/rslint: 🚀 Go Faster. Go Typed
Release oxlint v1.10.0 · oxc-project/oxc
GitHub - ArnaudBarre/tsl: An extension of tsc for type-aware linting
GitHub - typescript-eslint/tsgolint: ✨ Experimental proof-of-concept typescript-go powered JS/TS linter written in Go
feat: multithread linting by fasttime · Pull Request #19794 · eslint/eslint