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effect

The missing standard library for TypeScript, for writing production-grade software.
Licenses: MIT
Published: 3 years ago Last updated: 1 months ago Latest version: 3.21.2 Latest non-vulnerable version: 4.0.0-beta.74
npm
GitHub

Package Health Score

86/100
  • securityNo known security issues
  • popularityKey ecosystem project
  • maintenanceHealthy
  • communitySustainable

Maintenance

HEALTHY

Commit Frequency

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Open Issues
420
Open PR
131
New PRS
1
Last Release
1 months ago
Last Commit
11 days ago
Maintainers
2

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

We found that effect 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 (15.2M)
GitHub Stars
14.4k
Forks
580
Contributors
0

The npm package effect receives a total of 15,218,585 downloads a week. As such, we scored effect popularity level to be Key ecosystem project.

Based on project statistics from the GitHub repository for the npm package effect, we found that it has been starred 14,417 times.

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

Community

SUSTAINABLE
Readme.md
No
Contributing.md
No
Code of Conduct
Yes
Contributors
0
Funding
Yes
LICENSE
MIT

This project has seen only 10 or less contributors.

How about a good first contribution to this project? It seems that effect is missing a README file.

License

MIT>=0;
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Direct Vulnerabilities

Known vulnerabilities in the effect 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 1 total vulnerabilities, but none affect the latest version (3.21.2)

Package versions

436 VERSIONS IN TOTAL See all versions
versionpublisheddirect vulnerabilities
4.0.0-beta.7428 May, 2026
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4.0.0-beta.7328 May, 2026
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4.0.0-beta.7227 May, 2026
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4.0.0-beta.7127 May, 2026
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4.0.0-beta.7020 May, 2026
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4.0.0-beta.6920 May, 2026
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4.0.0-beta.6819 May, 2026
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4.0.0-beta.6717 May, 2026
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4.0.0-beta.6612 May, 2026
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4.0.0-beta.659 May, 2026
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effect dependencies

2 IN TOTAL
fast-check@standard-schema/spec