Chapter 4. Mastering Promises

This chapter will cover the following recipes:

• Understanding and implementing basic Promises
• Chaining Promises and Promise handlers
• Creating Promise wrappers with Promise.resolve() and Promise.reject()
• Implementing Promise barriers with Promise.all()
• Canceling asynchronous actions with Promise.race()
• Converting a Promise into an Observable
• Converting an HTTP service Observable into ZoneAwarePromise