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	RSLint	Deno
speed		🚀 quick	🐇 capable	🐢 slow	🐇 capable	🐢 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	RSLint	Deno
VS Code		✅	✅	✅	✅	✅
Vim		✅	✅	✅	❌	✅
Neovim		✅	✅	✅	❌	✅
WebStorm		❌	✅	✅	❌	✅
Sublime Text		✅	✅	✅	❌	✅
Notepad++		❌	✅	✅	❌	❌
Atom		❌	✅	✅	❌	✅
Emacs		✅	✅	✅	❌	✅
Codespaces		❌	❌	❌	❌	❌
Kate		✅	❌	❌	❌	❌
LSP server		✅	✅	❌	✅	✅