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.
20 lines
666 B
20 lines
666 B
4 years ago
|
var $ = require('../internals/export');
|
||
|
|
var getBuiltIn = require('../internals/get-built-in');
|
||
|
|
var anObject = require('../internals/an-object');
|
||
|
|
var FREEZING = require('../internals/freezing');
|
||
|
|
|
||
|
|
// `Reflect.preventExtensions` method
|
||
|
|
// https://tc39.github.io/ecma262/#sec-reflect.preventextensions
|
||
|
|
$({ target: 'Reflect', stat: true, sham: !FREEZING }, {
|
||
|
|
preventExtensions: function preventExtensions(target) {
|
||
|
|
anObject(target);
|
||
|
|
try {
|
||
|
|
var objectPreventExtensions = getBuiltIn('Object', 'preventExtensions');
|
||
|
|
if (objectPreventExtensions) objectPreventExtensions(target);
|
||
|
|
return true;
|
||
|
|
} catch (error) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|