A collection of functional programming utilities inspired by Underscore and Functional JavaScript
Functional programming in TypeScript
Lodash modular utilities.
A collection of codecs and combinators for use with io-ts
Plugin helper for Fastify
TypeScript runtime type system for IO decoding/encoding
fp-ts ESLint rules
Simple `and` and `or` functional programming predicates
Custom Jest matchers for projects using using fp-ts and io-ts
Functional programming utilities for TypeScript
A community driven utility package for fp-ts
The missing pseudo-standard library for fp-ts.
Implementation of newtypes in TypeScript
A tiny vanilla javascript form validation library
Application bootstrapping utilities for fp-ts
find a free tcp port to listen locally
This library extends Reflect-Metadata with methods that make it easier to manipulate metadata without knowing all the conventions.
FP-friendly classes for Typescript
Since https://github.com/typestack/class-validator has not been recently updated, we have decided to fork it and transform the underlying code to be OOP.
A lightweight flag icon toolkit for the web
Type-aware object mapping for [Pristine](https://github.com/magieno/pristine-ts). Convert plain payloads (HTTP request bodies, database rows, queue messages) into typed class instances — with renaming, coercion, validation, and nested-object support.
[Online Gallery](https://tscircuit.github.io/footprinter/) · [discord](https://tscircuit.com/join) · [main tscircuit repo](https://github.com/tscircuit/tscircuit) · [List of Missing Footprints](https://jlcsearch.tscircuit.com/footprin
ESLint rules for functional programming
Simple functional programming utility & Misc programming tool