nl_tokens: / [ ^ \ t ] + / g
pl_tokens: function readFile ( inPath , useHeader , regex ) { var index = 0 ; var outData = [ ] ; var readStream = fs . createReadStream ( inPath ) . pipe ( split ( ) ) . on ( 'data' , function ( line ) { line = line . toString ( ) . match ( regex ) ; if ( line ) { if ( useHeader && index == 0 ) { setHeaderRowAsKeys ( line ) ; } else if ( useHeader ) { // create an object with header row keys line = addKeys ( line ) ; outData . push ( line ) ; } else { // array, no keys outData . push ( line ) ; } <mask> ++ ; } } ) ; readStream . on ( 'end' , function ( ) { writeFile ( outData , yargs . o ) ; } ) ; }