var input = document.querySelector("input");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