core-js/modules/es.reflect.is-extensible.js

Standard library

var anObject = require('../internals/an-object');
var objectIsExtensible = Object.isExtensible;

// `Reflect.isExtensible` method
// https://tc39.github.io/ecma262/#sec-reflect.isextensible
require('../internals/export')({ target: 'Reflect', stat: true }, {
  isExtensible: function isExtensible(target) {
    anObject(target);
    return objectIsExtensible ? objectIsExtensible(target) : true;
  }
});