Image resize using node.js

image-resize.js

const im = require('imagemagick');
const fs = require('fs');
const mime = require('mime-types');

fs.readdir('./uploads/', (err, filenames) => {
  if (err) throw err;
  filenames.forEach((filename) => {
    if (mime.lookup(filename) && mime.lookup(filename).includes('image')) {
      fs.readFile('./uploads/' + filename, (err, data) => {
        if (!filename) {
          console.log('There was an error with the image');
        } else {
          const path = `./uploads/${filename}`;
          const thumbPath = `./uploads/thumb-${filename}`;

          fs.writeFile(path, data, err => {
            im.resize(
              {
                srcPath: path,
                dstPath: thumbPath,
                quality: 0.70,
                height: 250
              },
              (err, stdout, stderr) => {
                if (err) throw err;
                console.log('resized image to fit within 250px');
              }
            );
          });
        }
      });
    }
  });
});