const zlib = require("zlib");
const { pipeline } = require("stream");

// Komprimieren
zlib.deflate("abc" /* buffer | string */, (err, compressed) => {

});

// Dekomprimieren
zlib.inflate(compressed /* buffer */, (err, decompressed) => {

});

// Als Stream
const zipper = zlib.createDeflate();
const unzipper = zlib.createInflate();

source.pipe(zipper).pipe(target);
source.pipe(unzipper).pipe(target);

// einfachere Alternative
pipeline(source, zipper, target, (err) => {
    console.error(err);
});