Studying all day long)
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

16 lines
776 B

var fails = require('../internals/fails');
var isObject = require('../internals/is-object');
var classof = require('../internals/classof-raw');
var ARRAY_BUFFER_NON_EXTENSIBLE = require('../internals/array-buffer-non-extensible');
// eslint-disable-next-line es-x/no-object-isextensible -- safe
var $isExtensible = Object.isExtensible;
var FAILS_ON_PRIMITIVES = fails(function () { $isExtensible(1); });
// `Object.isExtensible` method
// https://tc39.es/ecma262/#sec-object.isextensible
module.exports = (FAILS_ON_PRIMITIVES || ARRAY_BUFFER_NON_EXTENSIBLE) ? function isExtensible(it) {
if (!isObject(it)) return false;
if (ARRAY_BUFFER_NON_EXTENSIBLE && classof(it) == 'ArrayBuffer') return false;
return $isExtensible ? $isExtensible(it) : true;
} : $isExtensible;