nl_tokens: promise generator - psuedo read - only
pl_tokens: function ( ) { var dfd = this ; // since people might be used to .promise() var promise = function ( ) { return promise ; } ; promise . done = stackNFire ( 'done' , dfd ) ; promise . fail = stackNFire ( 'fail' , dfd ) ; promise . progress = stackNFire ( 'progress' , dfd ) ; promise . <mask> = dfd . state ; return promise ; }