Extract Zip file and read the data inside the file in angular

Use jszip library- https://stuk.github.io/jszip/.

const jsZip = require('jszip');
  jsZip.loadAsync(fileList[0]).then((zip) => { // <----- HERE
    Object.keys(zip.files).forEach((filename) => { // <----- HERE
      zip.files[filename].async('string').then((fileData) => { // <----- HERE
         this.fileData = this.fileData + '**$$##$$**' + fileData;
      });
    });
  });

Source: Reading zip file contents and assign it to local variable