text: const convertExcel = require('excel-as-json').processFile;
  const argv = require('yargs').argv;
  const fileName = argv.file.split('.');
  
  const fileNameDest = ` ${filename[0]}.${filename[1].replace('xlsx','json')}`;
      
      convertExcel(
          `./excel/${fileName}`,
          `./json/${fileNameDest}`,
          false, 
          (err,data) => console.log(`exported ${data.length} rows`) 
      );
  