text: 'use strict';
  
  module.exports = function(type) {
  
      const maps = {
          'txt': 'text/plain',
          'html': 'text/html',
          'css': 'text/css',
          'xml': 'application/xml',
          'json': 'application/json',
          'js': 'application/javascript',
          'jpg': 'image/jpeg',
          'jpeg': 'image/jpeg',
          'gif': 'image/gif',
          'png': 'image/png',
          'svg': 'image/svg+xml'
      };
  
      if(maps[type] !== null && maps.hasOwnProperty(type)) {
          return maps[type];
      }
  
      return type;
  };