Run a Node.js app

Add postgres client to your project. In this example we used postgres.js, but feel free to choose another one
Store your Neon credentials somewhere, for example in the .env file.

NEON_HOST=...
    NEON_DB=...
    NEON_USER=...
    NEON_PASS=...
    NEON_PORT=...` \

To connect to the database using postgres client and your Neon credentials, add the following code to the pages/api/hello_worlds.js

import postgres from 'postgres';

const sql = postgres({
  host: process.env.NEON_HOST,
  port: process.env.NEON_PORT,
  database: process.env.NEON_DB,
  username: process.env.NEON_USER,
  password: process.env.NEON_PASS,
});

const result = await sql.uafe(req.body);