neverthrow

A port of Rust's Result type to TypeScript.

Write functions with input/output parsing, procedure chaining, typed errors and more. Ideal for server actions!

Vitest makes friends with neverthrow

Create errors that can be both thrown and returned. Make error handling easier for both JavaScript and TypeScript.

Fastify example with funcional and typesafe approach

A type-safe error handling library for Zig inspired by Rust's Result<T, E> and TypeScript's neverthrow.

👽 Typescript-based Monorepo template based on Turborepo. Collection of non-trivial best practices

A collection of utilities used alongside neverthrow

Simplify error handling!

Functional TypeScript library for WebAuthn PRF extension. Deterministic key derivation from passkeys with monadic error handling (neverthrow). ESM + CJS, type-safe, zero-config.

HTTP contract library where handlers return Result instead of throwing

API REST to register checkpoints and check packages tracking

AI エージェントがコードを書いても品質が崩れないフルスタックテンプレート — Hono + TanStack Start + Cloudflare Workers。Clean Architecture / ROP を dependency-cruiser・mutation testing・arch-guards で機械的に強制

Rust-like Result error handling for TypeScript. Guard throwing functions, decorator support, Vitest/Jest matchers, ESLint rules, and codemod for migration. Built on neverthrow.

Sistema de Gestión Clínica

Just another logger and retry util library

TypeScript reference for DDD + Clean Architecture, with modular bounded contexts, result-oriented error handling via Neverthrow, and domain events via EventEmitter3.

Simple Project : API CRUD with Express

An opinionated neverthrow extension with metadata and observability hooks

A bunch of common utilities in pure Typescript to deal with primitives, strings, urls, objects, collections, dates etc.