effect-config

What problem does it solve?

It prevents brittle, unsafe configuration code by decoding and validating environment and file-based settings into strongly typed values.

Core Features & Use Cases

• Typed configuration primitives: Decode strings into numbers, booleans, URLs, dates, durations, log levels, and redacted secrets with validation.
• Schema-driven structured configs: Build nested, composable configuration shapes using Config.schema with Schema.Struct for predictable validation.
• ConfigProvider source flexibility: Load config from environment variables, plain objects, .env contents/files, directory trees, or fully custom sources with provider composition and testing-friendly parsing.

Quick Start

Use the effect-config skill to define a Config.schema for your app settings and parse it from a test provider built from in-memory values instead of reading process.env directly.