PNG to WebP

import readline from 'node:readline';import path from 'node:path';import fs from 'node:fs';import sharp from 'sharp';import { fdir } from 'fdir';const rl = readline.createInterface({  input: process.stdin,  output: process.stdout,});function prompt(question) {  return new Promise(resolve => rl.question(question, answer => resolve(answer.trim())));}function getDirSize(dirPath) {  let total = 0;  const entries = fs.readdirSync(dirPath, { withFileTypes: true });  for (const entry of entries) {    const fullPath = path.join(dirPath, entry.name);    if (entry.isDirectory()) {      total += getDirSize(fullPath);    }    else {      total += fs.statSync(fullPath).size;    }  }  return total;}function formatSize(bytes) {  const kb = bytes / 1024;  const mb = kb / 1024;  return mb >= 1 ? `${mb.toFixed(2)} MB` : `${kb.toFixed(2)} KB`;}async function convertToWebp(inputPath) {  const outputPath = inputPath.replace(/\.png$/i, '.webp');  try {    await sharp(inputPath).webp({ lossless: false }).toFile(outputPath);    fs.unlinkSync(inputPath);    console.log(`✅ Converted and removed: ${inputPath}`);    return outputPath;  }  catch (error) {    console.error(`❌ Conversion failed for ${inputPath}:`, error.message);    return null;  }}function findCodeFiles(rootDir) {  return new fdir()    .withFullPaths()    .filter(f =>      /\.(js|ts|jsx|tsx|vue|html|css|scss)$/i.test(f)      && !/node_modules|\.git|dist|\.nuxt|\.output/.test(f),    )    .crawl(rootDir)    .sync();}function updateFileReferences(codeFile, replacements) {  let content = fs.readFileSync(codeFile, 'utf-8');  let changed = false;  const updatedRefs = [];  for (const { original, updated } of replacements) {    const escapedOriginal = original.replace(/[-/\\^$*+?.()|[\]{}]/g, '\\$&');    const regex = new RegExp(escapedOriginal, 'g');    if (regex.test(content)) {      content = content.replace(regex, updated);      changed = true;      updatedRefs.push({ from: original, to: updated });    }  }  if (changed) {    fs.writeFileSync(codeFile, content, 'utf-8');    console.log(`🔁 Updated: ${codeFile}`);    updatedRefs.forEach(({ from, to }) => {      console.log(`   → ${from} → ${to}`);    });  }}async function main() {  const imageRoot = await prompt('Enter the image directory (e.g., ./public/images): ');  const resolvedImageRoot = path.resolve(imageRoot);  const projectRoot = process.cwd();  if (!fs.existsSync(resolvedImageRoot) || !fs.statSync(resolvedImageRoot).isDirectory()) {    console.error('❌ Invalid image directory.');    rl.close();    return;  }  const allImages = new fdir()    .withFullPaths()    .filter(f => /\.png$/i.test(f) && !/node_modules|\.git|dist|\.nuxt|\.output/.test(f))    .crawl(resolvedImageRoot)    .sync();  if (allImages.length === 0) {    console.log('No .png images found.');    rl.close();    return;  }  const sizeBefore = getDirSize(resolvedImageRoot);  const replacements = [];  for (const imgPath of allImages) {    const newPath = await convertToWebp(imgPath);    if (newPath) {      const relFromPublic = path.relative(path.join(projectRoot, imageRoot), imgPath).replace(/\\/g, '/');      const altPaths = [        `${imageRoot}/${relFromPublic}`,        `/${imageRoot}/${relFromPublic}`,        `/images/${relFromPublic}`,        `images/${relFromPublic}`,        relFromPublic,        relFromPublic.replace(/^images\//, ''),      ];      for (const alt of altPaths) {        replacements.push({          original: alt.replace(/\.png$/i, '.png'),          updated: alt.replace(/\.png$/i, '.webp'),        });      }    }  }  const sizeAfter = getDirSize(resolvedImageRoot);  const sizeSaved = sizeBefore - sizeAfter;  console.log(`\n📦 Directory size before: ${formatSize(sizeBefore)}`);  console.log(`📦 Directory size after: ${formatSize(sizeAfter)}`);  console.log(`💡 Space saved: ${formatSize(sizeSaved)}\n`);  if (replacements.length === 0) {    console.log('No images were converted. Nothing to update.');    rl.close();    return;  }  const codeFiles = findCodeFiles(projectRoot);  for (const codeFile of codeFiles) {    updateFileReferences(codeFile, replacements);  }  rl.close();}main();