Generate App Icons

Icons.js

const sharp = require('sharp');
const fs = require('fs-extra');

function generateIcons(sourceFile){
  let sizes = [512, 384, 256, 192, 152, 144, 128, 96, 72, 32];
  fs.ensureDirSync('assets/icons');
  sizes.forEach(size => {
    let iconFile = `assets/icons/icon-${size}x${size}.png`;

    if (size == 32)
      iconFile = 'favicon.ico';

    sharp(sourceFile)
      .resize(size, size)
      .toFile(iconFile, function (err) {
        if (err) {
          console.error(`Error while generating ${iconFile}`);
          console.error(err);
        }
      });
  });
}

var args = process.argv.slice(2);
console.log(args[0]);
generateIcons(args[0]);