nl_tokens: If path is directory read their children and push more onto paths This is the recursive operation that creates more file in the pipeline
pl_tokens: function directory_path ( ) { pending ++ readdir ( entry , ( err , children ) => { if ( err ) return done ( err ) // Push children into pipeline, order is not important for ( var i = children . length ; i -- ; ) { if ( path !== null && base !== null ) { files . push ( { base , path : join ( <mask> , children [ i ] ) } ) } else if ( path !== null ) { files . push ( { base : null , path : join ( path , children [ i ] ) } ) } else { files . push ( { base , path : children [ i ] } ) } } // Filter directory out of pipeline after adding children files pending -- done ( null , null ) } ) }