// [START functions import] const express = require('express'); const serverLess = require('serverless-http'); const matchMock = require('./mock/matchMock'); const app = express(); app.all('*', (req, res, next) => { res.header('Access-Control-Allow-Origin', '*'); res.header( 'Access-Control-Allow-Headers', 'Content-Type, Content-Length, Authorization, Accept, X-Requested-With , yourHeaderFeild', ); res.header('Access-Control-Allow-Methods', 'PUT, POST, GET, DELETE, OPTIONS'); if (req.method == 'OPTIONS') { res.send(200); } else { next(); } }); app.use(matchMock); exports.handler = serverLess(app);