// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-finalization-registry.prototype.register
description: Return undefined (applying custom this)
info: |
FinalizationRegistry.prototype.register ( target , holdings [, unregisterToken ] )
1. Let finalizationRegistry be the this value.
2. If Type(finalizationRegistry) is not Object, throw a TypeError exception.
3. If Type(target) is not Object, throw a TypeError exception.
4. If finalizationRegistry does not have a [[Cells]] internal slot, throw a TypeError exception.
5. If Type(unregisterToken) is not Object,
a. If unregisterToken is not undefined, throw a TypeError exception.
b. Set unregisterToken to empty.
6. Let cell be the Record { [[Target]] : target, [[Holdings]]: holdings, [[UnregisterToken]]: unregisterToken }.
7. Append cell to finalizationRegistry.[[Cells]].
8. Return undefined.
features: [FinalizationRegistry]
---*/
var fn = function() {};
var register = FinalizationRegistry.prototype.register;
var finalizationRegistry = new FinalizationRegistry(fn);
var target = {};
assert.sameValue(register.call(finalizationRegistry, target), undefined);