The getPropertyDescriptor method returns a property descriptor of a given object

getPropertyDescriptor.js

/**
* Return the property descriptor of a given object
* @param {Object} obj - The object for which to access property descriptors
* @param {String|Symbol} key - The name or Symbol of the property whose descriptor is to be retrieved
* @return {Object} The property descriptor of the given object
*/

function getPropertyDescriptor (obj, key) {
	if (obj === undefined || obj === null) {
		throw new TypeError('Cannot convert undefined or null to object');
	}
	
	if (key in obj) {
		return getRecursivePropertyDescriptor(obj);
	}

	function getRecursivePropertyDescriptor (obj) {
		return Object.prototype.hasOwnProperty.call(obj, key)
			? Object.getOwnPropertyDescriptor(obj, key)
		: getRecursivePropertyDescriptor(Object.getPrototypeOf(obj));
	}
}