Build and compose maintainable regular expressions in JavaScript.

io-ts codec to fast-check arbitrary mapping

An opinionated ESLint config to encourage pure(ish), typeful functional programming in TypeScript.

A CLI tool to check type coverage for typescript code

Node command tool to generate TypeScript coverage report

An ESLint plugin to enforce the use of total functions (and prevent the use of partial functions) in TypeScript.

Error reporters for io-ts

Functional programming in TypeScript

🐏 Practical functional Javascript

Mutation testing for JavaScript and friends

DraftJS: Export ContentState to HTML