isAsync

Check if value is an async function.

Similar: is, isAsync, isGenerator.

function isAsync(v)
// v: a value

const xfunction = require('extra-function');


xfunction.isAsync(async () => 0);
// → true

xfunction.isAsync(() => 0);
// → false

References

• Learn You a Haskell for Great Good!: Higher order functions by Miran Lipovaca
• How to know if a function is async?
• JavaScript Detect Async Function by David Walsh
• is-async-function package by Jordan Harband
• is-callback-function package by Charlike Mike Reagent