FaaS comparison

auth-0-webtask-io.js

//https://webtask.io/docs/model
module.exports = function(cb) {
    cb(null, { i_am: 'done '});
} 

aws-lambda.js

//https://docs.aws.amazon.com/pt_br/lambda/latest/dg/nodejs-prog-model-handler.html
exports.myHandler = function(event, context, callback) {   
    ... function code   
    callback(null, "some success message");
   // or 
   // callback("some error type"); 
}

azure-functions.js

// You should include context, other arguments are optional
module.exports = function(context, myTrigger, myInput, myOtherInput) {
    // function logic goes here :)
    context.done();
};

cloudflare-workers.js

addEventListener('fetch', event => {
  event.respondWith(fetchAndApply(event.request))
})

async function fetchAndApply(request) {
  if (request.headers.get('user-agent').includes('annoying_robot')) {
    return new Response('Sorry, this page is not available.',
        { status: 403, statusText: 'Forbidden' })
  }

  return fetch(request)
}

google-cloud-functions.js

const escapeHtml = require('escape-html');

/**
 * HTTP Cloud Function.
 *
 * @param {Object} req Cloud Function request context.
 *                     More info: https://expressjs.com/en/api.html#req
 * @param {Object} res Cloud Function response context.
 *                     More info: https://expressjs.com/en/api.html#res
 */
exports.helloHttp = (req, res) => {
  res.send(`Hello ${escapeHtml(req.query.name || req.body.name || 'World')}!`);
};

ibm-cloud-function.js

const main = (params) => {
  let body = `Hello ${params.name || 'World'}`
  let res = {body}
  return res
}

oracle-fn-project.js

//https://fnproject.io/tutorials/node/intro/
const fdk=require('@fnproject/fdk');

fdk.handle(function(input){
  let name = 'World';
  if (input.name) {
    name = input.name;
  }
  return {'message': 'Hello ' + name}
})

zeit-now.js

const { parse } = require('url')

module.exports = (req, res) => {
  const { query } = parse(req.url, true)
  const { name = 'World' } = query
  res.end(`Hello ${name}!`)
}