Async Iterator Helpers Ponyfill

A ponyfill implementation of the AsyncIterator class compliant with the proposal-async-iterator-helpers.

⚠ Still in development. Not very well tested yet. Do not use in production.

Installation

Install the package using npm:

npm install async-iterator-helpers-ponyfill

Usage

Import the AsyncIterator class and use its methods to work with asynchronous iterators.

Example

import { AsyncIterator } from 'async-iterator-helpers-ponyfill';

// Example: Using `from` to create an AsyncIterator from an iterator, from an iterable, from an async iterator, or from
// an async iterable.
const asyncIterator = AsyncIterator.from([1, 2, 3, 4]);

// Example: Using `map` to transform values
const mappedIterator = asyncIterator.map(x => Promise.resolve(x * 2));

console.log(await mappedIterator.toArray()); // Output: [2, 4, 6, 8]

Static Methods

• AsyncIterator.from(source): Creates an AsyncIterator from an iterable or async iterable.
• AsyncIterator.fromStream(stream): Creates an AsyncIterator from a ReadableStream.

Instance Methods

• drop(limit): Skips the first limit items.
• every(predicate): Checks if all items satisfy the predicate.
• filter(predicate): Filters items based on the predicate.
• find(predicate): Finds the first item that satisfies the predicate.
• flatMap(mapper): Maps and flattens items.
• forEach(callback): Executes a callback for each item.
• map(mapper): Transforms items using the mapper function.
• reduce(reducer, initialValue): Reduces items to a single value.
• some(predicate): Checks if any item satisfies the predicate.
• take(count): Takes the first count items.
• toArray(): Converts the iterator to an array.
• toStream(): Converts the iterator to a ReadableStream.

License

This project is licensed under the MIT License. See the LICENSE file for details.