text: 
  import {System} from './system';
  
  /**
   * Base renderer class.
   */
  export class Renderer extends System {
    /**
     * Draw.
     * @param {number} delta The time delta
     * @param {object} state The current state.
     */
    draw(delta, state) {
      throw new Error('Not implemented');
    }
  }
  