response-iterator/dist/esm/iterators/async.js

Creates an async iterator for a variety of inputs in the browser and node. Supports fetch, node-fetch, and cross-fetch

export default function asyncIterator(source) {
    const iterator = source[Symbol.asyncIterator]();
    return {
        next () {
            return iterator.next();
        },
        [Symbol.asyncIterator] () {
            return this;
        }
    };
}