Async Template Tag

search.js

'use strict';

const got = require('got');
const express = require('express');

const app = express();

const html = (body) => ({
  fillSearch: (value) => html(body.replace(
    'id="text"', `id="text" value="${value}"`
  )),
  toString: () => body
});

const search = async (parts) => (
  html((await got('https://ya.ru')).body).fillSearch(parts.join('')).toString()
);

app
  .get('/', async (req, res) => {
    res.send(await search`ВВП`);
  })
  .listen(3000);