// |reftest| skip-if(!this.hasOwnProperty('FinalizationRegistry')) -- FinalizationRegistry is not enabled unconditionally // 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); reportCompare(0, 0);