Generator functions in Typescript

| Tag typescript  functions  generator  
function* createFibonacciGenerator(){
	let a = 0;
	let b = 1;
	while (true) {
		yield a;
		[a, b] = [b, a + b];
	}
}

let fibonacciGenerator = createFibonacciGenerator(); // IterableIterator<number>
fibonacciGenerator.next(); // {value: 0, done: false}
fibonacciGenerator.next(); // {value: 1, done: false}
  1. The asterisk * before a function’s name makes that function a generator. Calling a generator returns an iterable iterator.
  2. Generators use yield keyword to yield values.
  3. Typescript is able to infer the type of our iterator from the type of value we yielded.
  4. Call next() on the iterator to get the next value.

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