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Filename : IsDataDescriptor.js

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'use strict';

var $TypeError = require('es-errors/type');

var hasOwn = require('hasown');

var isPropertyDescriptor = require('../helpers/records/property-descriptor');

// https://262.ecma-international.org/5.1/#sec-8.10.2

module.exports = function IsDataDescriptor(Desc) {
	if (typeof Desc === 'undefined') {
		return false;
	}

	if (!isPropertyDescriptor(Desc)) {
		throw new $TypeError('Assertion failed: `Desc` must be a Property Descriptor');
	}

	if (!hasOwn(Desc, '[[Value]]') && !hasOwn(Desc, '[[Writable]]')) {
		return false;
	}

	return true;
};