Medium - Image Manipulation using NodeJS - Cropping and center Endpoint

crop.js

const express = require('express');
const app = express();
const gm = require('gm');
const fs = require('fs');
const port = 1337;

app.get('/ping', (request, response) => {
  response.send('Pong!');
});

app.get('/crop/:width/:height', (request, response) => {
  
  const { width, height } = request.params;
  
  gm('/path/to/image/file')
    .gravity('Center') // Move the starting point to the center of the image.
    .crop(width, height)
    .write('./tmp.png', (err) => {
      if (err) {
        console.log(err); 
      } else {
        response.sendFile('./tmp.png');
      }
    })

   fs.unlinkSync('./tmp.png');
});

app.listen(port, () => {
  console.log(`Server running on port ${port}`);
});