typescript-effect-ts
Effect-TS
Effect is a powerful TypeScript library for building robust, type-safe applications. It provides a functional effect system with typed errors, dependency injection, resource management, and concurrency primitives.
Why Effect?
Type-safe errors: Unlike Promise which loses error type information, Effect tracks errors in the type system with Effect<Success, Error, Requirements>.
Dependency injection: Services are declared explicitly using Context.Tag and provided via Layer, making dependencies visible in types.
Resource safety: Effect.acquireRelease ensures resources are always cleaned up, even on failure or interruption.
Composability: Effects compose naturally with pipe, Effect.gen generators, and combinators like Effect.all, Effect.flatMap.
Quick Reference
For detailed patterns and examples, see:
- Core Concepts - Effect type, creating and running effects, generators
- Error Handling - Typed errors, catchAll, catchTag, Either
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