node squoosh 压缩图片

squoosh使用node进行图片压缩

// import { ImagePool } from '@squoosh/lib';
// import fs from 'fs/promises';
const squoosh = require('@squoosh/lib');
const fs = require('fs');
const path = require('path');

const { ImagePool } = squoosh;

async function libSquooshOptimize(imagePath, filename, outputFolderPath) {
  const imagePool = new ImagePool();
  const image = await imagePool.ingestImage(imagePath);
  const preprocessOptions = {
    resize: {
      width: 100,
    },
  };
  await image.preprocess(preprocessOptions);
  const encodeOptions = {
    mozjpeg: {}, // an empty object means 'use default settings'
    jxl: {
      quality: 90,
    },
  };
  await image.encode(encodeOptions);
  const { extension, binary } = await image.encodedWith.mozjpeg;
  fs.writeFileSync(`${outputFolderPath}/${filename}.${extension}`, binary);
  imagePool.close();
}

async function libSquooshWebpOptimize(imagePath) {
  const imagePool = new ImagePool();
  const image = await imagePool.ingestImage(imagePath);
  const preprocessOptions = {
    resize: {
      width: 100,
    },
  };
  await image.preprocess(preprocessOptions);
  const encodeOptions = {
    webp: {
      lossless: true,
      method: 6,
    },
  };
  await image.encode(encodeOptions);
  const outFile = `${imagePath}.webp`;
  const rawData = (await image.encodedWith.webp).binary;
  fs.writeFileSync(outFile, rawData);
  imagePool.close();
}

async function main() {
  // Get input and output folders from arguments
  const appArgs = process.argv.slice(2);
  if (appArgs.length === 1) {
    const inputFilePath = appArgs[0];
    await libSquooshWebpOptimize(inputFilePath);
  }
  if (appArgs.length === 2) {
    const inputFilePath = appArgs[0];
    const outputFolderPath = appArgs[1];
    const filename = path.basename(inputFilePath).replace(/\.[^/.]+$/, '');
    await libSquooshOptimize(inputFilePath, `${filename}Optimize`, outputFolderPath);
  }
  // node build-webp.js test.jpg results
  // await libSquooshOptimize(inputFilePath, `${filename}Optimize`, outputFolderPath);
  console.log('Invalid command: Include <input> and <output> directories when calling this script.');
  console.log('For example: node index.js images/ results/');
  process.exit();
}

main();