text: load("201224b0d1c296b45befd2285e95dd42.js");
  // Assigning to a proxy with no set handler calls the defineProperty handler
  // when an existing inherited data property already exists.
  
  var hits = 0;
  var proto = {x: 1};
  var t = Object.create(proto);
  var p = new Proxy(t, {
      defineProperty(t, id, desc) { hits++; return true; }
  });
  p.x = 2;
  assertEq(hits, 1);
  assertEq(proto.x, 1);
  assertEq(t.hasOwnProperty("x"), false);
  
  // Same thing, but the receiver is a plain object inheriting from p:
  var receiver = Object.create(p);
  receiver.x = 2;
  assertEq(hits, 1);
  assertEq(t.hasOwnProperty("x"), false);
  assertEq(receiver.hasOwnProperty("x"), true);
  assertEq(receiver.x, 2);
  