functype monorepo

This repository hosts the functype family of TypeScript functional programming libraries.

Packages

Package	Description	npm
functype	Core FP library: Option, Either, Try, List, Set, Map, IO, Task, Match, Cond, and more	functype
functype-os	OS utilities (env vars, paths, file ops, platform detection)	functype-os
functype-log	IO-native logging wrapping LogLayer with Tag/Layer DI	functype-log
functype-react	React bindings (in progress)	functype-react
functype-mcp-server	MCP server for functype documentation lookup and code validation	functype-mcp-server

The Astro documentation site lives in site/.

Development

pnpm install
pnpm validate            # format + lint + test + build across all packages
pnpm -F functype test    # run tests for a single package
pnpm -F functype-react dev

See each package's own README and CLAUDE.md for package-specific guidance.

License

MIT — see LICENSE.