(Node.js) Compress Bytes to Base64 (or any other encoding)

Compresses bytes to base64 or any other encoding. Also decompress to return the original.

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 example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var success;

    // First create some binary data to compress.
    var binData = new chilkat.BinData();

    var i;
    for (i = 1; i <= 16; i++) {
        binData.AppendEncoded("000102030405060708090A0B0C0D0E0F","hex");
    }

    var compress = new chilkat.Compression();
    compress.Algorithm = "deflate";
    compress.EncodingMode = "base64";

    uncompressedBytes = binData.GetBinary();

    // Compress and return the compressed bytes in base64 format.
    var compressedBase64 = compress.CompressBytesENC(uncompressedBytes);
    console.log("compressed and base64 encoded: " + compressedBase64);

    // Compress and return in hex format:
    compress.EncodingMode = "hex";
    var compressedHex = compress.CompressBytesENC(uncompressedBytes);
    console.log("compressed and hex encoded: " + compressedHex);

    // Now decompress..
    var binData2 = new chilkat.BinData();

    // Decompress the base64..
    compress.EncodingMode = "base64";
    uncompressedBytes = compress.DecompressBytesENC(compressedBase64);
    binData2.AppendBinary(uncompressedBytes);
    // Show the uncompressed bytes in hex format:
    console.log(binData2.GetEncoded("hex"));
    console.log("--");

    // Decompress the hex..
    compress.EncodingMode = "hex";
    uncompressedBytes = compress.DecompressBytesENC(compressedHex);
    binData2.Clear();
    binData2.AppendBinary(uncompressedBytes);
    // Show the uncompressed bytes in hex format:
    console.log(binData2.GetEncoded("hex"));
    console.log("--");

}

chilkatExample();