Find bugs in JavaScript programs.

Install for Kate with npm

Supported operating systems:

Windows instructions

quick-lint-js has an npm package, making it easy to install the LSP server for use by Kate.

1. Install prerequisites

In order to install quick-lint-js' npm package, you must first install the npm client.

Install Kate version 19 or newer.

2. Install quick-lint-js

Install quick-lint-js globally (on your machine) for use anywhere, including by Kate:

sudo npm install --global --unsafe-perm quick-lint-js

Note: Kate will not use quick-lint-js if it is installed locally within your project. Kate will only uses quick-lint-js if it is globally installed.

3. Configure Kate

Open the LSP Client tab in Kate's settings. In your User Server Settings, paste the following configuration:

    "servers": {
        "javascript": {
            "command": ["quick-lint-js", "--lsp-server"],
            "documentLanguageId": true,
            "highlightingModeRegex": "^JavaScript.*$",
            "root": "",
            "url": "https://quick-lint-js.com/install/kate/"

TODO: TypeScript support in Kate