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effect

The missing standard library for TypeScript, for writing production-grade software.
Licenses: MIT
Published: 3 years ago Last updated: 19 days ago Latest version: 3.21.0 Latest non-vulnerable version: 4.0.0-beta.43
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
401
Open PR
112
New PRS
1
Last Release
19 days ago
Last Commit
7 days ago
Maintainers
3

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 (8.9M)
GitHub Stars
13.8k
Forks
549
Contributors
0

The npm package effect receives a total of 8,878,616 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 13,782 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 (3.21.0)

Package versions

404 VERSIONS IN TOTAL See all versions
versionpublisheddirect vulnerabilities
4.0.0-beta.4329 Mar, 2026
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4.0.0-beta.4227 Mar, 2026
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4.0.0-beta.4127 Mar, 2026
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4.0.0-beta.4024 Mar, 2026
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4.0.0-beta.3924 Mar, 2026
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4.0.0-beta.3823 Mar, 2026
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4.0.0-beta.3722 Mar, 2026
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4.0.0-beta.3620 Mar, 2026
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4.0.0-beta.3518 Mar, 2026
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4.0.0-beta.3417 Mar, 2026
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effect dependencies

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