Show HN: Pure Effect - Reproduce production bugs on your laptop without a DB

Category: library

Tags: effect-library, testing, typescript

Score: 6.8/10 (Innovation: 6, Technical: 7, Documentation: 8, Utility: 6)

Pure Effect is a lightweight, zero-dependency effect library for JavaScript/TypeScript that enables testing async pipelines without mocks by representing effects as plain data objects. Its novel approach combines dependency injection, retry, parallel execution, and OpenTelemetry support in under 1KB, making it interesting for developers seeking more testable and composable async code patterns.

Target audience: backend devs

Repository: https://pure-effect.org · JavaScript · MIT · 35 stars

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