Function createIterator

tests/helpers/helpers.js:10–24

(elements, methods)

}

export function createIterator(elements, methods) {
  let index = 0;
  const iterator = {
    called: false,
    next() {
      iterator.called = true;
      return {
        value: elements[index++],
        done: index > elements.length,
      };
    },
  };
  if (methods) for (const key in methods) iterator[key] = methods[key];
  return iterator;
}

export function createSetLike(elements) {
  return {