quick-lint-js

Over 130× faster than ESLint, quick-lint-js gives you instant feedback as you code. Find bugs in your JavaScript before your finger leaves the keyboard. Lint any JavaScript file with no configuration.

const occupation = language + " coder";
const language = "JavaScript";
occupation = "Senior " + occupation;

E0057 - use of undeclared variable: ocupationconsole.log(`Welcome, ${ocupationoccupation}!`);

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Install quick-lint-js

Latest version: 2.8.0 (released July 25, 2022)

• install VS Code plugin
• install Neovim plugin
• install Vim plugin
• install CLI
• install CLI on npm

see all installation options · release history

Features

feature	quick-lint-js	ESLint	JSHint	Rome	Deno
speed	🚀 quick	🐇 capable	🐢 slow	🚀 quick	🐢 slow
license	free GPLv3	open source MIT	open source MIT	open source MIT	open source MIT
easy npm install	✅	✅	✅	✅	❌
easy setup	✅ zero config	❌ config or init	❌ config	✅ config optional	✅ zero config
JSX	✅	✅ †	❌	✅	✅
TypeScript	❌ *	✅ †	❌	✅	✅
lint rules	minimal	zillions	some	some	some
stable	✅	✅	✅	❌	✅
feature	quick-lint-js	ESLint	JSHint	Rome	Deno
VS Code	✅	✅	✅	✅	✅
Vim	✅	✅	✅	❌	✅
Neovim	✅	✅	✅	❌	✅
WebStorm	❌	✅	✅	❌	✅
Sublime Text	✅	✅	✅	❌	✅
Notepad++	❌	✅	✅	❌	❌
Atom	❌	✅	✅	❌	✅
Emacs	✅	✅	✅	❌	✅
Codespaces	❌	❌	❌	❌	❌
Kate	✅	❌	❌	❌	❌
LSP server	✅	✅	❌	✅	✅