regenerator-runtime
Advanced tools
Runtime for Regenerator-compiled generator and async functions.
The regenerator-runtime package is a runtime module for Regenerator-compiled generator and async functions. It provides a polyfill for environments that do not natively support these features, allowing developers to use generators and async/await syntax in their JavaScript code.
Generator Function Support
Enables the use of generator functions, which can yield multiple values over time, allowing for more control over asynchronous operations.
function* gen() {
yield 1;
yield 2;
yield 3;
}
const g = gen();
console.log(g.next().value); // 1
console.log(g.next().value); // 2
console.log(g.next().value); // 3Async/Await Support
Allows the use of async/await syntax for writing asynchronous code in a more synchronous fashion, improving readability and maintainability.
async function fetchData() {
const data = await fetch('https://api.example.com/data');
return data.json();
}
fetchData().then(data => console.log(data));Babel-polyfill includes regenerator-runtime along with a full ES2015+ environment polyfill. It is more comprehensive but also larger in size compared to regenerator-runtime, which focuses only on generator and async function support.
Core-js is a modular standard library for JavaScript, which includes polyfills for ECMAScript features. It provides similar functionality to regenerator-runtime but also includes polyfills for other features such as Promises, Symbols, Collections, Iterators, and more.
While not providing generator or async function support, es6-promise is a lightweight library that offers a polyfill for Promises, which are often used in conjunction with async/await syntax. It is more focused compared to regenerator-runtime, which provides broader support for ES2015+ features.
Standalone runtime for
Regenerator-compiled generator
and async functions.
To import the runtime as a module (recommended), either of the following import styles will work:
// CommonJS
const regeneratorRuntime = require("regenerator-runtime");
// ECMAScript 2015
import regeneratorRuntime from "regenerator-runtime";
To ensure that regeneratorRuntime is defined globally, either of the
following styles will work:
// CommonJS
require("regenerator-runtime/runtime");
// ECMAScript 2015
import "regenerator-runtime/runtime.js";
To get the absolute file system path of runtime.js, evaluate the
following expression:
require("regenerator-runtime/path").path
FAQs
Runtime for Regenerator-compiled generator and async functions.
The npm package regenerator-runtime receives a total of 51,342,863 weekly downloads. As such, regenerator-runtime popularity was classified as popular.
We found that regenerator-runtime demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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.
Security News
npm now supports Trusted Publishing with OIDC, enabling secure package publishing directly from CI/CD workflows without relying on long-lived tokens.
Research
/Security News
A RubyGems malware campaign used 60 malicious packages posing as automation tools to steal credentials from social media and marketing tool users.
Security News
The CNA Scorecard ranks CVE issuers by data completeness, revealing major gaps in patch info and software identifiers across thousands of vulnerabilities.