Exercises

• 5.1 Dissecting Promise.all(): Implement your own version of Promise.all() leveraging promises, async/await, or a combination of the two. The function must be functionally equivalent to its original counterpart.
• 5.2 TaskQueue with promises: Migrate the TaskQueue class internals from promises to async/await where possible. Hint: you won't be able to use async/await everywhere.
• 5.3 Producer-consumer with promises: Update the TaskQueuePC class internal methods so that they use just promises, removing any use of the async/await syntax. Hint: the infinite loop must become an asynchronous recursion. Beware of the recursive Promise resolution memory leak!
• 5.4 An asynchronous map(): Implement a parallel asynchronous version of Array.map() that supports promises and a concurrency limit. The function should not directly leverage the TaskQueue or TaskQueuePC classes we presented in this chapter, but it can use the underlying patterns. The function...