| (function() { |
| var o = {'arguments': 42}; |
| with (o) { // Definitely forces heavyweight. |
| // Note syntax is not a property access. |
| reportCompare(delete arguments, true, |
| "arguments property deletion within with block"); |
| } |
| reportCompare('arguments' in o, false, |
| "property deletion observable"); |
| })(); |
| |
| (function() { |
| var o = {'arguments': 42}; |
| delete o.arguments; |
| reportCompare('arguments' in o, false, |
| "arguments property deletion with property access syntax"); |
| })(); |
| |
| (function() { |
| var arguments = 42; // Forces heavyweight. |
| reportCompare(delete arguments, false, |
| "arguments variable"); |
| })(); |
| |
| (function() { |
| reportCompare(delete arguments, false, "arguments object"); |
| })(); |