const fs = require('fs'); 
const path = require('path'); 
const allFilesSync = (dir, fileList = [], prefix = '') => { 
  fs.readdirSync(dir).forEach(file => { 
    const filePath = path.join(dir, file) 
 
     
    fileList.push( 
      fs.statSync(filePath).isDirectory() 
        ? {file: allFilesSync(filePath, undefined, file)} 
        : `${prefix}.${path.parse(file).name}` 
    ) 
  }) 
  return fileList 
} 
 
console.log(allFilesSync('./'));