Show HN: Pure Effect – Reproduce production bugs on your laptop without a DB
Summary
Pure Effect is a zero-dependency effect library for JavaScript and TypeScript that represents I/O as data, allowing you to reproduce production flows on your laptop without touching a database. The article outlines the problem of debugging production bugs when I/O is tangled with business logic, and presents a flow-based approach with primitives like Success, Failure, Command, and Retry, plus AI-assisted flow discussion. It also provides usage examples, pipeline composition, and an install section.