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'use strict';
var GetIntrinsic = require('../GetIntrinsic');
var $gOPD = require('../helpers/getOwnPropertyDescriptor');
var $gOPN = GetIntrinsic('%Object.getOwnPropertyNames%');
var $TypeError = GetIntrinsic('%TypeError%');
var every = require('../helpers/every');
var IsDataDescriptor = require('./IsDataDescriptor');
var IsExtensible = require('./IsExtensible');
var ToPropertyDescriptor = require('./ToPropertyDescriptor');
var Type = require('./Type');
// https://www.ecma-international.org/ecma-262/6.0/#sec-testintegritylevel
module.exports = function TestIntegrityLevel(O, level) {
if (Type(O) !== 'Object') {
throw new $TypeError('Assertion failed: Type(O) is not Object');
}
if (level !== 'sealed' && level !== 'frozen') {
throw new $TypeError('Assertion failed: `level` must be `"sealed"` or `"frozen"`');
}
var status = IsExtensible(O);
if (status) {
return false;
}
var theKeys = $gOPN(O);
return theKeys.length === 0 || every(theKeys, function (k) {
var currentDesc = $gOPD(O, k);
if (typeof currentDesc !== 'undefined') {
if (currentDesc.configurable) {
return false;
}
if (level === 'frozen' && IsDataDescriptor(ToPropertyDescriptor(currentDesc)) && currentDesc.writable) {
return false;
}
}
return true;
});
};