Iterating and the Asynchronous Loop

Iteration and the TypeScript generator

TypeScript generators are an advanced and very modern concept. They use the function* syntax which is the standard function keyword followed by an asterisk. The star syntax indicates that a function returns a generator object. A function that returns a generator object can return multiple times. This function allows the use of the yield keyword, which returns a value without returning the function. It allows for potential infinite iteration, while still being able to consume the value outside the function. The function returns a generator object which has a .next() function. The next function returns a value of type IteratorResult. The function returns when the iteration is over with a done property from IteratorResult. The done property is of type Boolean and is used to tell a while or for loop to stop.