Port of some powerful Rust utils to JavaScript

Library for representing values that may or may not exist

Simple helper functions (map, filter, flatMap, getOrElse, etc.) for transforming T | undefined types (Maybe<T>).

Rust-style monadic types implementation for TypeScript

WIP: Stream API for lazy iterable operations using Optional type

🦋 Scala monads for javascript

Option monad for TypeScript

Zero-configuration command-line option parsing

A pragmatic functional programming library for JavaScript/TypeScript

Experimental implementation of Maybe and Result monads compatible with await.

A Typescript implementation of the Maybe data type

Build simple CLIs in minutes

Option and Result types in typescript for error handling

Type safe Option, Result and Vector from the Rust programming language

A library for people with options and results.

Error and optional values control flow library based on Rust's Result and Option.

Manage assets on Opyn V1 (Convexity).

Library for working with Options in a type safe manner.

brings Option / Result / match from Rust to Javascript

Implementation of Maybe type in Typescript