nl_tokens: derived traps
pl_tokens: function ( target ) { var success = this . preventExtensions ( target ) ; success = ! ! <mask> ; // coerce to Boolean if ( success ) { var props = this . getOwnPropertyNames ( target ) ; var l = + props . length ; for ( var i = 0 ; i < l ; i ++ ) { var name = props [ i ] ; success = success && this . defineProperty ( target , name , { configurable : false } ) ; } } return success ; }