cocos-creator-multiplayer/examples/first-api/frontend/src/index.ts

import { HttpClient } from 'tsrpc-browser';
import { serviceProto } from './shared/protocols/serviceProto';

// Create the Client
let client = new HttpClient(serviceProto, {
    server: 'http://127.0.0.1:3000',
    logger: console
});

async function test() {
    // callApi
    let ret = await client.callApi('Hello', {
        name: 'World'
    });

    // Error
    if (!ret.isSucc) {
        alert('Error: ' + ret.err.message);
        return;
    }

    // Success
    alert('Success: ' + ret.res.reply);
}

window.onload = test;