index.js

const fs = require('fs').promises;
const path = require('path');
const CleanCSS = require('clean-css');
const terser = require('terser');
async function minifyCSS(inputPath, outputPath) {
  try {
    const css = await fs.readFile(inputPath, 'utf8');
    const minified = new CleanCSS().minify(css);
    await fs.writeFile(outputPath, minified.styles);
    console.log(`CSS minified: ${outputPath}`);
  } catch (err) {
    console.error(`Error minifying CSS: ${err}`);
  }
}
async function minifyJS(inputPath, outputPath) {
  try {
    const js = await fs.readFile(inputPath, 'utf8');
    const minified = await terser.minify(js);
    await fs.writeFile(outputPath, minified.code);
    console.log(`JS minified: ${outputPath}`);
  } catch (err) {
    console.error(`Error minifying JS: ${err}`);
  }
}
async function minifyJSON(inputPath, outputPath) {
  try {
    const json = await fs.readFile(inputPath, 'utf8');
    const minified = JSON.stringify(JSON.parse(json));
    await fs.writeFile(outputPath, minified);
    console.log(`JSON minified: ${outputPath}`);
  } catch (err) {
    console.error(`Error minifying JSON: ${err}`);
  }
}
async function main() {
  await minifyCSS(
    path.join(__dirname, 'public', 'css', 'style.css'),
    path.join(__dirname, 'public', 'css', 'style.min.css')
  );
  await minifyJS(
    path.join(__dirname, 'public', 'js', 'script.js'),
    path.join(__dirname, 'public', 'js', 'script.min.js')
  );
  await minifyJSON(
    path.join(__dirname, 'public', 'json', 'list.json'),
    path.join(__dirname, 'public', 'json', 'list.min.json')
  );
}
main();