httpbin built with on a firebase function stored in firestore

firebase-function-httpbin.ts

import { firestore } from 'firebase-admin';
import * as functions from 'firebase-functions';

const region = 'europe-west1';
const firestoreCollection = 'webhook-posts';
export const httpBin = functions
  .region(region)
  .https.onRequest(async ({ headers, body }, response) => {
    const data = { headers, body };
    await firestore().collection(firestoreCollection).doc().create(data);

    response.setHeader('Content-Type', 'application/json');
    response.send(JSON.stringify(data));
  });