express post
app.post('/signup', async(req, res) => {
const { email, firstName } = req.body
const user = new User({ email, firstName })
const ret = await user.save()
res.json(ret)
})
expressjs post traseu
const express = require('express')
const app = express()
// POST method route
app.post('/', function (req, res) {
// req.body
res.send('POST request to the homepage')
})