Vercel Simple Serverless CRUD API

Sign up for Vercel, then you can set up and deploy a site with..
$ npm intall -g vercel
$ vercel init svelte name_of_project (might be prompted to connect account)
$ cd name_of_project
$ npm i
$ vercel
(hit enter, enter, enter, enter)
for override settings type..
y, enter, down, down, space, enter, npm run dev

Do this to the Code
rename api/date.js to crud.js paste this in crud.js

let people = [{name: 'Patrick'}, {name: 'Sandy'}, {name: 'Bob'}]

module.exports = function (req, res) {
  if (req.method === 'GET') {
    res.status(200).json(people);
  } else if (req.method === 'POST') {
    people.push(req.body)
    res.status(200).json(people)
  } else if (req.method === 'PUT') {
    const {person, index} = req.body;
    people[index] = person;
    res.status(200).json(people)
  } else if (req.method === 'DELETE') {
    const {index} = req.body;
    people = people.filter(function(_, i) { return i !== index });
    res.status(200).json(people)
  }
};

Try it out
$ vercel dev
then try it at localhost:3000/api/crud
or
$ vercel
then try it out at {the_link_it_gives_you}/api/crud