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https://github.com/quick-lint/quick-lint-js
quick-lint-js finds bugs in JavaScript programs
https://github.com/quick-lint/quick-lint-js
beginner-friendly javascript linter parser
Last synced: about 20 hours ago
JSON representation
quick-lint-js finds bugs in JavaScript programs
- Host: GitHub
- URL: https://github.com/quick-lint/quick-lint-js
- Owner: quick-lint
- License: gpl-3.0
- Created: 2020-04-01T05:57:50.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2024-09-29T00:03:03.000Z (2 months ago)
- Last Synced: 2024-10-29T15:36:03.456Z (about 1 month ago)
- Topics: beginner-friendly, javascript, linter, parser
- Language: C++
- Homepage: https://quick-lint-js.com
- Size: 33.8 MB
- Stars: 1,541
- Watchers: 11
- Forks: 192
- Open Issues: 415
-
Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
- License: COPYING
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README
# 
quick-lint-js
quick-lint-js finds bugs in JavaScript programs.
quick-lint-js finds many bugs, including:
* Using a variable which does not exist
* Assigning to a `const` variable
* Using `await` in a non-`async` function
* Syntax errors
## Installing
There are many ways to install quick-lint-js, depending on how you prefer to
work! 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 the [quick-lint-js installation
guide](https://quick-lint-js.com/install/).
## Examples
Here are some common bugs that quick-lint-js can catch:
### Example 1: Undefined Variable
```js
const occupation = "Engineer";
console.log("Welcome, " + ocupation); // Typo: 'ocupation' should be 'occupation'
```
Output: `use of undeclared variable: ocupation`
### Example 2: Reassigning a const variable
```js
const name = "John";
name = "Doe"; // Error: Cannot reassign a constant
```
Output: `assignment to const variable: name`
### Example 3: Using await in a non-async function
```js
function getData() {
await fetch("/data");
}
```
Output: `await used in non-async function`
These are just a few examples of how quick-lint-js can help identify common
issues in your JavaScript code.
## Contributing
We’re always happy to welcome new contributors! If you’d like to contribute to
quick-lint-js, please refer to the contributing guide on our website for all the
details.
Check out the [contributing guide here](https://quick-lint-js.com/contribute/).
## Contact
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][quick-lint-js-irc-web] channel
on Libera.Chat.
- **Security bug reports** (private disclosure): Email us at
[[email protected]](mailto:[email protected]).
[quick-lint-js-irc-web]: https://kiwiirc.com/nextclient/irc.libera.chat/#quick-lint-js