(Node.js) Remove a File from a .zip

Demonstrates how to remove a file from a .zip.

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() {

    // This requires the Chilkat Zip API to have been previously unlocked.
    // See Unlock Chilkat Zip for sample code.

    // First prepare a .zip and write it..
    var zip = new chilkat.Zip();

    var success;
    zip.NewZip("qa_output/abc.zip");

    // Add some files..
    // entry: ZipEntry
    var entry = zip.AppendString("a.txt","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");

    entry = zip.AppendString("b.txt","bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb");

    entry = zip.AppendString("c.txt","cccccccccccccccccccccccccccccccccccc");

    // Write to qa_output/abc.zip
    // This .zip contains three files: a.txt, b.txt, and c.txt
    success = zip.WriteZipAndClose();

    // -------------------------------------------------------------------
    // Open abc.zip, remove an entry, and re-write.
    var zip2 = new chilkat.Zip();
    zip2.OpenZip("qa_output/abc.zip");

    entry = zip2.GetEntryByName("b.txt");
    zip2.DeleteEntry(entry);

    // Write the modified .zip back to "abc.zip"
    success = zip2.WriteZip();

    // To write to a different filename, change the FileName..
    zip2.FileName = "qa_output/ac.zip";
    success = zip2.WriteZipAndClose();

    console.log("success.");

}

chilkatExample();