Opinionated, minimal Result monad for TypeScript. Railway-oriented programming with Ok, Err, map, andThen, match.

Type-safe Option<T>, Some<T>, None for TypeScript and JavaScript. Replace null and undefined with a Rust-inspired Option type with map, andThen, filter, match, unwrap and Promise interop. Zero dependencies, dual ESM + CJS, ~2 KB.

Allow tests to be aware of addon / application asynchrony.

A fully typed error handling library for TypeScript inspired by Rust's Result type.

dude, wheres my workflow?

Rust Options for JavaScript

The default blueprint for ember-cli addons.

Run a tree of Tasks concurrently, call JS functions as Tasks (Task Ports)

Class-based Result and AsyncResult types for Trellis TypeScript applications.

A small, dependency-free Result type for explicit success and failure.

Delightful TypeScript patterns for elegant, type-safe applications

Proof of concept lib for creating composable services/filters in node

Zero-new-dep generic parser combinator library built purely on plgg primitives (Result/Option/Box/InvalidError); parsers are data-last functions Parser<A,S> = (ParseState<S>) => Result<Parsed<A,S>>, composed with pipe/flow. Threads a user-state slot for c

Type-safe nothing-handling and error-handling library

Type-safe error handling and optional values for TypeScript.

An implementation of `Promise` similar to Promise/A+.

Transport-agnostic Result and AppError primitives for explicit no-throw expected failures.

lodash/fp extensions

Utility functions and helpers for TypeScript projects

Resultar diagnostics for TypeScript >=7