
Security News
Packagist Urges Immediate Composer Update After GitHub Actions Token Leak
Packagist urges PHP projects to update Composer after a GitHub token format change exposed some GitHub Actions tokens in CI logs.
@stdlib/assert-has-async-iterator-symbol-support
Advanced tools
Detect native Symbol.asyncIterator support.
We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.
The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.
When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.
To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!
Detect native
Symbol.asyncIteratorsupport.
npm install @stdlib/assert-has-async-iterator-symbol-support
var hasAsyncIteratorSymbolSupport = require( '@stdlib/assert-has-async-iterator-symbol-support' );
Detects if a runtime environment supports ES2018 Symbol.asyncIterator.
var bool = hasAsyncIteratorSymbolSupport();
// returns <boolean>
var hasAsyncIteratorSymbolSupport = require( '@stdlib/assert-has-async-iterator-symbol-support' );
var bool = hasAsyncIteratorSymbolSupport();
if ( bool ) {
console.log( 'Environment has Symbol.asyncIterator support.' );
} else {
console.log( 'Environment lacks Symbol.asyncIterator support.' );
}
@stdlib/assert-has-async-iterator-symbol-support-cli: CLI package for use as a command-line utility.@stdlib/assert-has-iterator-symbol-support: detect native Symbol.iterator support.@stdlib/assert-has-symbol-support: detect native Symbol support.This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
See LICENSE.
Copyright © 2016-2026. The Stdlib Authors.
FAQs
Detect native Symbol.asyncIterator support.
We found that @stdlib/assert-has-async-iterator-symbol-support demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 4 open source maintainers 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
Packagist urges PHP projects to update Composer after a GitHub token format change exposed some GitHub Actions tokens in CI logs.

Research
GemStuffer abuses RubyGems as an exfiltration channel, packaging scraped UK council portal data into junk gems published from new accounts.

Company News
Socket was named to the Rising in Cyber 2026 list, recognizing 30 private cybersecurity startups selected by CISOs and security executives.