nl_tokens: Adds a feature option . This also adds a view from the parseOption and the transformOption to the underlying value .
pl_tokens: function addFeatureOption ( name , kind ) { if ( kind === EXPERIMENTAL ) experimentalOptions [ name ] = true ; Object . defineProperty ( parseOptions , name , { get : function ( ) { return ! ! options [ name ] ; } , enumerable : true , configurable : true } ) ; Object . defineProperty ( transformOptions , name , { get : function ( ) { var v = options [ name ] ; if ( v === 'parse' ) return false ; return v ; } , enumerable : true , configurable : true } ) ; var defaultValue = options [ name ] || kind === ON_BY_DEFAULT ; <mask> [ name ] = defaultValue ; defaultValues [ name ] = defaultValue ; }