Building a REST API

const express = require("express");
const app = express();
app.use(express.json());

let users = [{ id: 1, name: "John Doe" }];

app.get("/users", (req, res) => {
  res.json(users);
});

app.post("/users", (req, res) => {
  const user = req.body;
  users.push(user);
  res.status(201).json(user);
});

app.listen(3000, () => console.log("API running on port 3000"));