nl_tokens: Extracts shebang interpreter from script source .
pl_tokens: function extractSheBangInterpreter ( fullpath ) { // this is a modern cluster size. no need to read less const chunkSize = 4096 ; const fileData = readChunk . <mask> ( fullpath , 0 , chunkSize ) ; const fileChunk = fileData . toString ( ) ; const hookCmd = shebangCommand ( fileChunk ) ; if ( hookCmd && fileData . length === chunkSize && ! fileChunk . match ( / [\r\n] / ) ) { events . emit ( 'warn' , 'shebang is too long for "' + fullpath + '"' ) ; } return hookCmd ; }