text: // Copyright (C) 2015 the V8 project authors. All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  /*---
  es6id: 9.5.3
  description: >
      Throws a TypeError exception if handler is null
  features: [Proxy]
  ---*/
  
  var p = Proxy.revocable({}, {});
  
  p.revoke();
  
  assert.throws(TypeError, function() {
    Object.isExtensible(p.proxy);
  });
  