Lightweight library for composing asynchronous and event-based operations in JavaScript

Collection of monad matchers to ease testing with Jest

A lightweight flag icon toolkit for the web

<h3 align="center"> <a href="https://fp-ts.github.io/core/"> <img src="./docs/fp-ts-logo.png"> </a> </h3>

A simple little class that helps making Observable testing a breeze

A functional, type-safe utility library for elegant error handling and asynchronous operations in JavaScript/TypeScript.

Angular structural directives for fp-ts types (Option, Either)

Formatting of io-ts validation errors

Lightweight library with aggregate functions for composing asynchronous and event-based operations in JavaScript

TSLint rule for RxJS

Simple functional programming utility & Misc programming tool

ESLint rules for functional programming

<h3 align="center"> <a href="https://fp-ts.github.io/optic/"> <img src="./docs/fp-ts-logo.png"> </a> </h3>

FP-inspired helpers for asynchronous code

FP utilities for authoring common JS programs in functional form

A typescript implementation of Rust's Result and Option objects.

rxjs operators for execute shell command with ease

A debugging library for RxJS

A Typescript library for creating discriminating union types.

A composable environment variable decoder library