(Node.js) Decode Base64 to Zip File

Shows how to decode a baes64 string that is the encoded representation of the bytes that make up a .zip archive. Decodes the base64 and writes the .zip file.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    var b64 = "UEsDBBQA ... AAALgQAAAAA";

    var zipData = new chilkat.BinData();
    var success = zipData.AppendEncoded(b64,"base64");
    success = zipData.WriteFile("qa_output/out.zip");
    if (success !== true) {
        console.log("failed to write Zip file.");
        return;
    }


}

chilkatExample();