Effect Has a Free TypeScript Library — The Missing Standard Library for TS

TypeScript Has No Standard Library Python has os , json , datetime , collections , itertools . Go has net/http , encoding/json , fmt . TypeScript has... npm. Want retries? Install a package. Want schema validation? Another package. Want proper error handling? Another package. Want concurrency control? Another package. Effect: A Standard Library for TypeScript Effect is a comprehensive TypeScript library that handles errors, concurrency, retries, streaming, dependency injection, and more — with full type safety. Error Handling That Actually Works In regular TypeScript, errors are invisible: // What can go wrong? TypeScript has no idea. async function getUser ( id : string ): Promise < User > { const res = await fetch ( `/api/users/ ${ id } ` ) // NetworkError? const data = await res . json () // ParseError? return UserSchema . parse ( data ) // ValidationError? } With Effect, errors are part of the type: import { Effect } from ' effect ' const getUser = ( id : string ): Effect . Effect