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@gongt/trpc-lib

v1.0.3

Published

A tRPC library

Readme

library for trpc

socket-io link

复用socket-io的连接,执行trpc调用

// Client side
import { createTRPCClient } from '@trpc/client';
import { SocketIoLink } from '@gongt/trpc-lib/client';

const client = createTRPCClient({
  links: [
    SocketIoLink({
      url: 'ws://localhost:3000/socket.io/',
	  namespace: '/trpc',
    }),
  ],
});
// Server side
import { createSocketIoMiddleware } from '@gongt/trpc-lib/server';
import { initTRPC } from '@trpc/server';

const io = new SocketIO.Server({
	path: '/socket.io/',
	addTrailingSlash: true,
	transports: ['websocket', 'polling'],
});

export const trpc = initTRPC.context<XXX>().create({});
export const appRouter = trpc.router(...);

io.of('/trpc').use(
  createSocketIoMiddleware({
	router: appRouter,
  }),
);

api-extractor

调用 api-extractor 提取trpc的类型定义,生成客户端可用的类型文件,避免客户端依赖服务端。同时生成sourcemap保持调试友好

npx @gongt/trpc-lib extract ./lib/router.d.ts -o ../client/src/trpc-server-define.d.ts

说明:

  1. 必须编译,不能直接使用ts文件(例如./src/router.ts)
  2. 服务端router.d.ts中必须导出有且仅有一个 BuiltRouter 类型 (此类型来自 @trpc/server
  3. 输出文件将会import type xxx from '@trpc/server',因此客户端需要安装 @trpc/server 依赖,不过这个项目并不依赖 @types/node 之类的定义,所以不会污染客户端类型
  4. 如果源文件中存在 import type xxx from '...',那么目标文件中也会存在相同的import语句,因此需要保证客户端也能找到这些类型定义,这些定义最好来自一个独立的包,否则提取操作没有意义
    1. 输出文件实际也可以放入独立协议包中