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// |reftest| skip-if(!this.hasOwnProperty('WeakRef')) -- WeakRef is not enabled unconditionally
// This file was procedurally generated from the following sources:
// - src/subclass-builtins/WeakRef.case
// - src/subclass-builtins/default/expression.template
/*---
description: new SubWeakRef() instanceof WeakRef (Subclass instanceof Heritage)
features: [WeakRef]
flags: [generated]
---*/
const Subclass = class extends WeakRef {}
const sub = new Subclass({});
assert(sub instanceof Subclass);
assert(sub instanceof WeakRef);
reportCompare(0, 0);