text: 
  class ConverterController {
      constructor() {
          this._converters = {};
      }
  
      addConverter(name, converter) {
          this._converters[name] = converter;
      }
  
      getConverter(name) {
          return this._converters[name];
      }
  }
  
  const controller = new ConverterController();
  
  export default controller;
  