var inputStream = Rx.Observable
                    .fromEvent(input, "keyup");

var filterInputStream = inputStream
        .debounce(250)
        .map(function () {
            return input.value;
        })
        .filter(function (value) {
            return value;
        })
        .distinctUntilChanged();

var Rx = require("rxjs/Rx")

filterInputStream.subscribe(console.log)

// Aero

// Aerosmid

// Aerosmith