// |reftest| skip-if(!this.hasOwnProperty("Tuple")) /* 4.1.2.6 [[Set]] ( P, Receiver ) The [[Set]] internal method of a Tuple exotic object takes arguments P and Receiver. It performs the following steps when called: 1. Assert: IsPropertyKey(P) is true. 2. Return false. */ // Setting properties should have no effect var t = #[1]; t[4294967295] = "not a tuple element"; assertEq(t[4294967295], undefined); assertEq(t.length, 1); t[1] = 5; assertEq(t.length, 1); reportCompare(0, 0);