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happy-dom

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.
Licenses: MIT
Published: 6 years ago Last updated: 18 hours ago Latest version: 20.10.3 Latest non-vulnerable version: 20.10.3
npm
GitHub

Package Health Score

91/100
  • securityNo known security issues
  • popularityKey ecosystem project
  • maintenanceSustainable
  • communityActive

Maintenance

SUSTAINABLE

Commit Frequency

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Open Issues
270
Open PR
63
New PRS
1
Last Release
18 hours ago
Last Commit
18 hours ago
Maintainers
1

Further analysis of the maintenance status of happy-dom based on released npm versions cadence, the repository activity, and other data points determined that its maintenance is Sustainable.

We found that happy-dom demonstrates a positive version release cadence with at least one new version released in the past 3 months.

As a healthy sign for on-going project maintenance, we found that the GitHub repository had at least 1 pull request or issue interacted with by the community.

Popularity

KEY ECOSYSTEM PROJECT
Weekly downloads (8.6M)
GitHub Stars
4.5k
Forks
296
Contributors
170

The npm package happy-dom receives a total of 8,640,243 downloads a week. As such, we scored happy-dom popularity level to be Key ecosystem project.

Based on project statistics from the GitHub repository for the npm package happy-dom, we found that it has been starred 4,521 times.

Downloads are calculated as moving averages for a period of the last 12 months, excluding weekends and known missing data points.

Community

ACTIVE
Readme.md
Yes
Contributing.md
Yes
Code of Conduct
Yes
Contributors
170
Funding
Yes
LICENSE
MIT

A good and healthy external contribution signal for happy-dom project, which invites more than one hundred open source maintainers to collaborate on the repository.

License

MIT>=0;
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Direct Vulnerabilities

Known vulnerabilities in the happy-dom package. This does not include vulnerabilities belonging to this package’s dependencies.

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Security

NO KNOWN SECURITY ISSUES
Show only direct vulnerabilities in latest version
No vulnerabilities found

No vulnerabilities found in the latest version

There are 5 total vulnerabilities, but none affect the latest version (20.10.3)

Package versions

741 VERSIONS IN TOTAL See all versions
versionpublisheddirect vulnerabilities
20.10.312 Jun, 2026
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20.10.26 Jun, 2026
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20.10.14 Jun, 2026
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20.10.03 Jun, 2026
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20.9.013 Apr, 2026
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20.8.926 Mar, 2026
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20.8.824 Mar, 2026
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20.8.723 Mar, 2026
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20.8.623 Mar, 2026
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20.8.523 Mar, 2026
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happy-dom dependencies

7 IN TOTAL
@types/node@types/whatwg-mimetype@types/wsentitieswhatwg-mimetypebuffer-image-sizews

happy-dom development dependencies

5 IN TOTAL
@vitest/ui@webref/csstypescriptvitestmadge