wiki_search.js

var inputs =
   $("#query").
   keyupAsObservable().
   select(function(event){return event.target.value;}).
   where(function(text){return text.length > 2;}).
   throttle(500).
   distinctUntilChanged();
  
inputs.
   select(queryWikipedia).
   switchLatest().
   where(function(res){return res.data[1].length > 1;}).
   select(function(res){return res.data[1];}).
   subscribe(updateResults);