Convert images modified in the last hour to cwebp

cwebp-images.mjs

#!/usr/bin/env zx

const fs = require('fs'),
  path = require('path');

const nonWebPFiles = fs
  .readdirSync(process.cwd())
  .filter(file => !file.endsWith('.webp'));
const lastHour = new Date();
lastHour.setHours(lastHour.getHours() - 1);

nonWebPFiles.forEach(file => {
  fs.stat(file, (err, stats) => {
    if (err) {
      throw err;
    }

    if (stats.isDirectory() ||
      stats.mtime < lastHour) {
      return;
    }

    const fileNameWithoutExtension = path.basename(file, path.extname(file));
    $`cwebp ${file} -o ${fileNameWithoutExtension}.webp`;
  });
});