What is make-async-function?

This is a tiny utility that checks whether your JavaScript environment supports async functions, a modern feature for writing cleaner asynchronous code. If it does, the function returns an actual async function you can use, if not, it returns undefined. Think of it as a compatibility detector. Older JavaScript runtimes (like very old Node.js versions or older browsers) don't understand async syntax. This library lets you safely test whether the environment you're running in has this capability. You call the function, and it either gives you back a working async function or tells you the feature isn't available. The library offers two ways to check: you can call it once to get a single async function, or use its .list() method to get a collection of them. This is useful if you're writing code that needs to work across different JavaScript environments and want to gracefully handle older platforms that don't have async support. Who would use this? Developers building libraries or tools that need to work on many different platforms, from modern Node.js servers to older browsers or edge runtimes, would use it to detect whether they can safely use async syntax, or need to fall back to older patterns like promises or callbacks. It's a small but practical check for compatibility-conscious JavaScript projects.