async function is one that returns a promise.
await yields to the caller until the promise resolves and then continues with the result.
An iterator allows the collection to be looped through with a
An async iterator is a collection where each iteration is a promise which can be awaited using a
Async iterators are a stage 3 proposal. They are in Chrome Canary 60 with
An async iterator is a declarative pull stream as opposed to an Observable's declarative push stream.