The @babel/plugin-proposal-async-generator-functions package is a Babel plugin that allows you to use async generator functions and for-await-of loops in your JavaScript code, which are part of the ECMAScript 2018 (ES9) specification. This plugin transforms async generator functions and for-await-of loops into code that can run in environments that do not support these features natively.

What are @babel/plugin-proposal-async-generator-functions's main functionalities?

Async Generator Functions

This feature allows you to define asynchronous generator functions using the async function* syntax. These functions can yield values using the yield keyword, and they return an AsyncIterator which can be used with for-await-of loops.

async function* asyncGenerator() {
  var i = 0;
  while (i < 3) {
    yield i++;
  }
}

For-Await-Of Loops

This feature enables you to iterate over AsyncIterables using a for-await-of loop. The loop will wait for each promise returned by the AsyncIterable to resolve before continuing to the next iteration.

async function iterateAsyncGenerator() {
  for await (const value of asyncGenerator()) {
    console.log(value);
  }
}

Other packages similar to @babel/plugin-proposal-async-generator-functions

Changelog

Source

v7.20.1 (2022-11-01)

:bug: Bug Fix

babel-plugin-proposal-async-generator-functions
- #15103 fix: Compile re-declare var in init and body of for await (@liuxingbaoyu)
babel-plugin-proposal-class-properties, babel-traverse
- #15106 Do not mark in and instanceof as constant expressions (@nicolo-ribaudo)
babel-helpers, babel-plugin-proposal-duplicate-named-capturing-groups-regex, babel-plugin-transform-named-capturing-groups-regex
- #15092 Support indices.groups when compiling named groups in regexps (@ptomato)
babel-parser
- #15102 fix: Parse re-declare var in class static body (@liuxingbaoyu)
- #15096 fix: a satisfies b as lval (@liuxingbaoyu)
babel-helpers, babel-plugin-proposal-duplicate-named-capturing-groups-regex
- #15090 Handle multiple named groups in wrapRegExp replace() (@ptomato)
babel-plugin-transform-async-to-generator, babel-plugin-transform-parameters, babel-preset-env
- #15081 Move the generator body to a gen IIFE when compiling its params (@nicolo-ribaudo)

:house: Internal

babel-generator
- #15080 Automatically print inner comments (@nicolo-ribaudo)

Readme

Source

@babel/plugin-proposal-async-generator-functions

Turn async generator functions into ES2015 generators

See our website @babel/plugin-proposal-async-generator-functions for more information.

Install

Using npm:

npm install --save-dev @babel/plugin-proposal-async-generator-functions

or using yarn:

yarn add @babel/plugin-proposal-async-generator-functions --dev

Keywords

babel-plugin

FAQs

What is @babel/plugin-proposal-async-generator-functions?

Is @babel/plugin-proposal-async-generator-functions popular?

Is @babel/plugin-proposal-async-generator-functions well maintained?

Last updated on 01 Nov 2022

Did you know?

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install