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quick-lint-js finds bugs in JavaScript programs.

quick-lint-js finds many bugs, including:

• Using a variable which does not exist
• Assigning to aconst variable
• Usingawait in a non-async function
• Syntax errors

There are many ways to install quick-lint-js, depending on how you prefer towork! Here are the environments we support:

• CLI (Command-Line Interface)
• LSP (Language Server Protocol)
• Editor Plugins for:
  • Visual Studio Code (VSCode)
  • VSCodium
  • Vim/Neovim
  • Sublime Text
  • Emacs
  • Kate

For detailed installation instructions, visit thequick-lint-js installationguide.

Here are some common bugs that quick-lint-js can catch:

constoccupation="Engineer";console.log("Welcome, "+ocupation);// Typo: 'ocupation' should be 'occupation'

Output:use of undeclared variable: ocupation

constname="John";name="Doe";// Error: Cannot reassign a constant

Output:assignment to const variable: name

functiongetData(){awaitfetch("/data");}

Output:await used in non-async function

These are just a few examples of how quick-lint-js can help identify commonissues in your JavaScript code.

We’re always happy to welcome new contributors! If you’d like to contribute toquick-lint-js, please refer to the contributing guide on our website for all thedetails.

Check out thecontributing guide here.

If you have any questions or feedback, feel free to reach out:

• Bugs and feature requests: File an issue on GitHub.
• IRC: Ask questions in the#quick-lint-js channelon Libera.Chat.
• Security bug reports (private disclosure): Email us atstrager.nds@gmail.com.