hd-utils/lib/utils/validation/isAsyncFunction.js

A handy utils for modern JS developers

import isFunction from './isFunction';
import isPromise from './isPromise';
/**
 * @function isAsyncFunction
 * @description will check if the passed function is async function.
 * @example `isAsyncFunction(async function(){}) // true`
 * @example `isAsyncFunction(function(){}) // false`
 */
export default function isAsyncFunction(fun) {
    return isFunction(fun) && isPromise(fun());
}