node.js_zip and unzip

zip and unzip with node

ref : https://new.atsit.in/13087/

Project init

// project init
mkdir node-zip-archiver
cd node-zip-archiver
npm init -y
touch archiver.js

// install package
npm install archiver –save

fs : for managing file system tasks
archiver : for zipping file or directory

file -> zip

const archiver = require("archiver");
const fs = require("fs");

// create ZIP from file
const createZipFromFile = (file) => {
  const filePath = __dirname + "/" + file;
  const output = fs.createWriteStream(filePath + ".zip");
  const archive = archiver("zip", {
    zlib: { level: 9 }, // compression level to highest
  });

  // adding method to archive object
  archive.pipe(output);
  archive.file(filePath, { name: file });
  archive.finalize();
};

createZipFromFile("test.js");

folder -> zip

// create ZIP from folder
const createZipFromFolder = (folder) => {
    const folderPath = __dirname + '/' + folder
    const output = fs.createWriteStream(folderPath + '.zip')

    const archive = archiver('zip', {
        zlib: { level: 9 } // set compression level to the highest
    })

    archive.pipe(output)
    archive.directory(folderPath, false)
    archive.finalize()
}

zip --unzip--> file

npm install unzipper --save

const unzipper = require("unzipper")

//function to extract ZIP file
const extractZip = async (file) => {
    const filePath = __dirname + '/' + file
    const outputPath = __dirname + '/extracted'
    await fs.createReadStream(filePath)
        .pipe(unzipper.Extract({ path: outputPath }))
        .promise()
}