nl_tokens: / --- Streams
pl_tokens: function WriteStream ( opts ) { assert . object ( opts ) ; if ( opts . encoding !== null ) assert . string ( opts . encoding , 'options.encoding' ) ; assert . <mask> ( opts . flags , 'options.flags' ) ; assert . number ( opts . mode , 'options.mode' ) ; assert . object ( opts . fs , 'options.fs' ) ; assert . optionalNumber ( opts . start , 'options.start' ) ; stream . Writable . call ( this , opts ) ; this . bytesWritten = 0 ; this . encoding = opts . encoding ; this . flags = opts . flags ; this . mode = opts . mode ; this . start = opts . start || 0 ; this . _fd = opts . fd ; this . _fs = opts . fs ; this . _opening = true ; this . _pos = this . start ; var self = this ; this . once ( 'finish' , function onFinsh ( ) { if ( ! self . _fd ) return ; self . _fs . close ( self . _fd , function onClose ( err ) { if ( err ) { self . emit ( 'error' , err ) ; } else { self . emit ( 'close' ) ; } } ) ; } ) ; }