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import { Subscriber } from '../Subscriber';
import { iterator as Symbol_iterator } from '../symbol/iterator';
export const subscribeToIterable = <T>(iterable: Iterable<T>) => (subscriber: Subscriber<T>) => {
const iterator = iterable[Symbol_iterator]();
do {
const item = iterator.next();
if (item.done) {
subscriber.complete();
break;
}
subscriber.next(item.value);
if (subscriber.closed) {
break;
}
} while (true);
// Finalize the iterator if it happens to be a Generator
if (typeof iterator.return === 'function') {
subscriber.add(() => {
if (iterator.return) {
iterator.return();
}
});
}
return subscriber;
};
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