I built byethrow (@praha/byethrow), a Result type library for TypeScript/JavaScript.

Highlights:

- Tree-shakable (bundle only what you use)

- Plain-object Result (no classes)

- Same API for sync Result<T,E> and async Promise<Result<T,E>>

- pipe + andThen/andThrough

- Type-safe validation helpers

Docs: https://praha-inc.github.io/byethrow

Repo: https://github.com/praha-inc/byethrow

Would love thoughts from people who’ve used Result/Either in production: what’s missing, what’s annoying, what would you change?