Effect-TS/effect
Build production-ready applications in TypeScript
From the publisher
README & documentation
Source previewRead the project’s overview, installation instructions and usage examples. The original README is the source of truth.
[](https://pkg.pr.new//Effect-TS/effect) Effect is a library for building robust, maintainable, type-safe, and production grade applications in TypeScript. It helps you handle the hard problems at scale: typed errors, dependency injection, structured concurrency, scheduling, tracing, and unified schema validation. Whether your team is considering Effect, rolling it out, or already running it in production, we'd love to hear from you: what you're building, what works, and what you need from Effect next. Feedback from teams using and evaluating Effect directly shapes what we stabilize and build next. Teams depend on Effect for systems they expect to run for years. Effect 4.x is a long-term support (LTS) release with the following guarantees: Stable APIs reserve breaking…
Read the full README ↗ · Preview checked 2026-10-02T12:05:32.101Z
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What this repository does
Build production-ready applications in TypeScript
Repository facts
- Owner
- Effect-TS
- Primary language
- TypeScript
- Stars
- 16,389
- Forks
- 794
- Open issues + pull requests
- 298
- License
- MIT
- Archived
- No
- Default branch
- main
- Created
- 2019-11-13T12:49:21.000Z
- Last push
- 2026-10-02T10:15:38.000Z
Topics and intended use
Owner-supplied topics: cli, clustering, concurrency, dependency-injection, effect, error-handling, javascript, observability, opentelemetry, platform, schema, typescript, workflows
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Source and freshness
Source: GitHub. Metadata observed 2026-10-02T12:03:31.615Z. Daily imports are snapshots, not real-time monitoring.
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