es.reflect.prevent-extensions.js•673 B
'use strict';
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.es/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;
}
}
});