nl_tokens: IE doesn t allow Object . keys on primitive types ...
pl_tokens: function getKeys ( o ) { switch ( typeof o ) { case 'object' : return o ? Object . keys ( o ) : [ ] ; case 'string' : var keys = [ ] ; for ( var i = 0 ; i < o . length ; i ++ ) keys . push ( i . toString ( ) ) ; return keys ; <mask> : return [ ] ; } }