Observables from promises (fromPromise)

You can also create EventStreams from ES6 promises or jQuery AJAX. These streams will contain only a single value (or an error in case of failure), and finish. We will need a promise to test this method:

var promiseObject = Promise.resolve(10); 

Here, we are creating a successful promise that will return the value 10. To transform this promise into an EventStream, we use the following code:

Bacon 
   .fromPromise(promiseObject);