Find bugs in JavaScript programs.

Coding standards and style guide

C++ code

quick-lint-js’ C++ code is formatted using the clang-format tool, version 9.0.x. During development, use clang-format in one of two ways:

Install clang-format yourself, then run the tools/format script to format all of quick-lint-js’ code with one command.
Run clang-format in your editor (CLion, Emacs, Vim, Visual Studio, Visual Studio Code). Be sure to use version 9.0.x, or you might have problems with the CI clang-format checker.

JavaScript and HTML

quick-lint-js’ web code (CSS, HTML, and JavaScript) is formatted using the Prettier tool. During development, use Prettier in one of two ways:

In the plugin/vscode, plugin/vscode-lsp, wasm, or website directory, install Prettier with yarn install then run it with yarn fmt. This formats all of quick-lint-js’ code in that subproject with one command.
Run Prettier in your editor with Prettier editor integration. You need to run yarn install in the subproject’s directory in order for editor integration to work.