Platform Abstraction with Effect

Effect Source Reference

The Effect v4 source is vendored in consuming projects at repos/effect/. Browse and read files there directly to look up APIs, types, and implementations.

Reference this for:

• FileSystem source: packages/effect/src/FileSystem.ts
• Path source: packages/effect/src/Path.ts
• Platform layers: packages/platform-node/ and packages/platform-bun/
• Migration guide: MIGRATION.md
• Effect source: packages/effect/src/

Overview

Effect provides platform-independent abstractions that work seamlessly across Node.js and Bun environments. Instead of using runtime-specific APIs directly, you write code once using Effect Platform services and run it anywhere.