@trpc/server

tRPC

End-to-end typesafe APIs made easy

@trpc/server

Create tRPC routers and connect them to a server.

Documentation

Full documentation for @trpc/server can be found here

Installation

# npm
npm install @trpc/server@next

# Yarn
yarn add @trpc/server@next

# pnpm
pnpm add @trpc/server@next

# Bun
bun add @trpc/server@next

We also recommend installing zod to validate procedure inputs.

Basic Example

import { initTRPC } from '@trpc/server';
import {
  CreateHTTPContextOptions,
  createHTTPServer,
} from '@trpc/server/adapters/standalone';
import { z } from 'zod';

// Initialize a context for the server
function createContext(opts: CreateHTTPContextOptions) {
  return {};
}

// Get the context type
type Context = Awaited<ReturnType<typeof createContext>>;

// Initialize tRPC
const t = initTRPC.context<Context>().create();

// Create main router
const appRouter = t.router({
  // Greeting procedure
  greeting: t.procedure
    .input(
      z.object({
        name: z.string(),
      }),
    )
    .query(({ input }) => `Hello, ${input.name}!`),
});

// Export the app router type to be imported on the client side
export type AppRouter = typeof appRouter;

// Create HTTP server
const { listen } = createHTTPServer({
  router: appRouter,
  createContext,
});

// Listen on port 2022
listen(2022);

Similar packages

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express

Express is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications. Unlike @trpc/server, Express does not provide built-in type safety and requires additional libraries for type checking and validation.

apollo-server

Apollo Server is a community-driven, open-source GraphQL server that works with any GraphQL schema. It provides a powerful way to build a GraphQL API with type safety, but it requires a different approach compared to @trpc/server, which is more focused on TypeScript and end-to-end type safety.

nestjs

NestJS is a progressive Node.js framework for building efficient, reliable, and scalable server-side applications. It uses TypeScript by default and provides a lot of built-in features, including dependency injection and a modular architecture. However, it is more heavyweight compared to @trpc/server.