michael@0: // Forward to the target if the trap is not defined
michael@0: var target = {};
michael@0: Object.defineProperty(target, 'foo', {
michael@0:     value: 'bar',
michael@0:     writable: true,
michael@0:     enumerable: false,
michael@0:     configurable: true
michael@0: });
michael@0: var desc = Object.getOwnPropertyDescriptor(Proxy(target, {}), 'foo');
michael@0: assertEq(desc.value, 'bar');
michael@0: assertEq(desc.writable, true);
michael@0: assertEq(desc.enumerable, false);
michael@0: assertEq(desc.configurable, true);
michael@0: 
michael@0: var proto = {};
michael@0: Object.defineProperty(proto, 'foo', {
michael@0:     value: 'bar',
michael@0:     writable: true,
michael@0:     enumerable: false,
michael@0:     configurable: true
michael@0: });
michael@0: var target = Object.create(proto);
michael@0: assertEq(Object.getOwnPropertyDescriptor(Proxy(target, {}), 'foo'), undefined);