Rx.Observable.combineTemplate takes an object with key/value pairs of observables, and returns an observable which yields objects with key/value pairs of values which have been provided internally using Rx.Observable.combineLatest.

combineTemplate.js

  Rx.Observable.combineTemplate = function(sources) {
    
    var keys = [];
    var values = [];

    for (var key in sources) {
      keys.push(key);
      values.push(sources[key]);
    }

    return Rx.Observable.combineLatest(values, function() {
      var template = {};
      for (var i = 0, len = keys.length; i < len; i++) {
        template[keys[i]] = arguments[i];
      }
      return template;
    });
  };