app.post('/post', (req, res) => {
    console.log(req.body);

    res.send(req.body);
})

Error: Update() requires either a single JavaScript object or an alternating list of field/value pairs that can be followed by an optional precondition. Value for argument "dataOrField" is not a valid Fir
estore document. Detected an object of type "FieldValue" that doesn't match the expected instance (found in field "`requests.incoming`"). Please ensure that the Firestore types you are using are from the sa
me NPM package.)

const express = require('express')
const app = express()
const port = 3000
const cors = require('cors')

app.use(cors());


app.get('/', (req, res) => {
  res.send('Hello World!')
})

app.post('/post', (req, res) => {
    console.log(req.body);

    // res.send(req.body);
    res.json(req.body);
})

app.listen(port, () => {
  console.log(`Example app listening at http://localhost:${port}`)
})