text: const path = require('path');
  
  const mimeTypes = {
      'css':'text/css',
      'gif':'image/gif',
      'html':'text/html',
      'ico':'image/x-icon',
      'jpeg':'image/jpeg',
      'jpg':'image/jpeg',
      'js':'text/javaxcript',
      'json':'application/json',
      'pdf':'application/pdf',
      'png':'image/png',
      'svg':'image/svg+xml',
      'swf':'application/x-shockwave-flash',
      'tiff':'image/tiff',
      'txt':'text/plain',
      'wav':'audio/x-wav',
      'wma':'audio/x-ms-wma',
      'wmv':'video/x-ms-wmv',
      'xml':'text/xml'
  };
  
  module.exports=(filePath)=>{
      let ext = path.extname(filePath).split('.').pop().toLowerCase();
      if(!ext){
          ext = filePath;
      }
      return mimeTypes[ext] || mimeTypes['txt']
  };