core-js/modules/es.object.is-sealed.js

'use strict';
var $ = require('../internals/export');
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/no-object-issealed -- safe
var $isSealed = Object.isSealed;

var FORCED = ARRAY_BUFFER_NON_EXTENSIBLE || fails(function () { $isSealed(1); });

// `Object.isSealed` method
// https://tc39.es/ecma262/#sec-object.issealed
$({ target: 'Object', stat: true, forced: FORCED }, {
  isSealed: function isSealed(it) {
    if (!isObject(it)) return true;
    if (ARRAY_BUFFER_NON_EXTENSIBLE && classof(it) === 'ArrayBuffer') return true;
    return $isSealed ? $isSealed(it) : false;
  }
});