Knoopx

Write and run tests, configure test environments, mock dependencies, and generate coverage reports. Use when setting up vitest.config.ts, writing test suites, mocking modules, or measuring code coverage.

Map codebase structure, query symbols, trace call paths, and analyze dependencies. Use when exploring unfamiliar code, finding function callers/callees, detecting circular imports, or generating project overviews.

Lint JavaScript and TypeScript code, configure rules, fix issues automatically, and set up ESLint in projects. Use when linting code, fixing style issues, configuring eslint.config.js, or enforcing code quality standards.

Find unused dependencies, files, and exports in JS/TS projects. Use when cleaning up dead code, removing stale packages from package.json, or identifying unreferenced exports.

Switch NixOS/Home Manager configurations, clean old generations, and perform system maintenance with nh. Use when running os/home switch, pruning the Nix store, or managing system generations.

Fetch web pages, parse HTML with CSS selectors, call REST APIs, and scrape dynamic content. Use when extracting data from websites, querying JSON APIs, or automating browser interactions.

Initialize Python projects, manage dependencies, pin Python versions, and run scripts with uv. Use when adding/removing packages, syncing environments, running tools with uvx, or building distributions.

Download videos and audio, extract audio tracks, fetch playlists, and embed subtitles/metadata using yt-dlp. Use when saving media from YouTube or other sites, converting formats, or archiving content.