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happy-dom

Happy DOM is a JavaScript implementation of a web browser without a graphical user interface, supporting various web standards. It is ideal for testing environments where a lightweight DOM implementation is needed. It fits well in applications that require DOM manipulation without the overhead of a full browser.

lurq health score
86/100
Confidence
proven
Weekly downloads
15,886,262
Latest version
20.14.0
Last release
Sep 3, 2026
License
MIT

Should you depend on happy-dom?

lurq's verdict: low

  • No known advisories

Check this from your coding agent

This page is a daily snapshot. lurq's verify tool checks happy-dom at the exact version your agent is about to install, and compat checks it against the rest of your stack. One command connects Claude Code, Cursor, VS Code and other agents:

npx lurqrun

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Other testing packages lurq scores

Scored from public signals (npm registry, GitHub, deps.dev and advisory databases). Data as of Sep 4, 2026; this page refreshes every 24 hours. Source repository.