1 with_stat.js:2:1 "with" statement cannot be used in strict mode
   2 
   3 with({}) {}
   4  ^
   5 with_stat.js:2:7 Expected ; but found )
   6 
   7 with({}) {}
   8        ^
   9 repeat_param.js:2:18 strict mode function cannot have duplicate parameter name "x"
  10 
  11 function func(x, x) {}
  12                   ^
  13 repeat_prop.js:2:22 Property "foo" already defined
  14 
  15 var obj = { foo: 34, foo: 'hello' };
  16                       ^