util-ex/lib/is/type/async.js

Browser-friendly enhanced util fully compatible with standard node.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.isAsync = isAsync;
/**
 * Checks if a given value is an asynchronous function or a Promise.
 *
 * @param {*} value - The value to check.
 * @returns {boolean} - Returns true if the value is an asynchronous function or a Promise, otherwise false.
 */
function isAsync(value) {
  if (!value) return false;
  let result = value instanceof Promise;
  if (!result && typeof value === 'function') {
    result = value.constructor.name === 'AsyncFunction';
    if (!result) {
      result = value.constructor.name === 'AsyncGeneratorFunction';
    }
  }
  return result;
}