ImageResizer.ts

//Install express server2
import express   from 'express';

import * as url  from 'url';

const sharp = require('sharp');
var request = require('request');
export {};

var cors = require('cors');
const app = express();
app.set('port', (process.env.PORT || 5000));
app.use(cors());



app.get('*', function (req, res1)
{
    let imgPath = url.resolve('http://localhost', req.originalUrl);

    request({
                url     : imgPath,
                encoding: null
            }, function (err, res, bodyBuffer)
            {
                const resizer =  sharp(bodyBuffer)
                    .webp({quality: 90})
                    .toBuffer()
                    .then((myBuffer) =>
                          {
                              res1.writeHead(200, {'Content-Type': 'image/webp'});
                              res1.end(myBuffer, 'binary');
                          }).catch(error=>console.log(error));
    
                res1.pipe(resizer);
            });
   
});

app.listen(app.get('port'), function ()
{
    console.log('app running on port', app.get('port'));
});