Is it possible to reset an ECMAScript 6 generator to its initial state?

Question

Given the provided (very simple) generator, is it possible to return the generator back to its original state to use again?

var generator = function*() {
            


        

Answer 1

I think this is not a concern of a generator, but of an iterator – which actually 'does the labour'. To reset an iteration you just need to create a new iterator. I would probably use a dumb higher order function like this:

function *foo() {
    yield 1;
    yield 2;
    yield 3;
}

const iterateFromStart = (func) => {
    // every invocation creates a brand new iterator   
    const iterator = func();
    for (let val of iterator) {
        console.log(val)
  }
}

iterateFromStart(foo); // 1 2 3
iterateFromStart(foo); // 1 2 3