End-to-end type safety

Elysia provides an end-to-end type safety between backend and frontend without code generation similar to tRPC, using Eden.

import { Elysia } from 'elysia'
import { treaty } from '@elysia/eden'

// Backend
export const app = new Elysia()
  .get('/', 'Hello Elysia!')
  .listen(3000)

// Frontend
const client = treaty<typeof app>('localhost:3000')

const { data, error } = await client.get()

console.log(data) // Hello Elysia!

This works by inferring the types from the Elysia instance, and uses type hints to provide type safety for the client.

See Eden treaty.

Assignment

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