Extracting zipped files using JSZIP in javascript

This is a working version I am using:

var jsZip = require('jszip')
jsZip.loadAsync(file).then(function (zip) {
  Object.keys(zip.files).forEach(function (filename) {
    zip.files[filename].async('string').then(function (fileData) {
      console.log(fileData) // These are your file contents      
    })
  })
})

You can get most of the information you need from http://stuk.github.io/jszip/documentation/examples.html but it's a little hard to get in one place, you have to look around a bit.

It took a bit of digging in their documentation but they have an example that shows how to read the file contents from a ZIP.

You are getting the object that describes the ZIP contents but not the actual content. Here is an adjusted version:

var JSZip = require('JSZip');

fs.readFile(filePath, function(err, data) {
    if (!err) {
        var zip = new JSZip();
        zip.loadAsync(data).then(function(contents) {
            Object.keys(contents.files).forEach(function(filename) {
                zip.file(filename).async('nodebuffer').then(function(content) {
                    var dest = path + filename;
                    fs.writeFileSync(dest, content);
                });
            });
        });
    }
});