} else {
      renderer.prepareViewAttributeSource(id, path);
    }
  };
  viewElementSource = ({id, rendererID}: ElementAndRendererID) => {
    const renderer = this._rendererInterfaces[rendererID];
    if (renderer == null) {
      console.warn(`Invalid renderer id "${rendererID}" for element "${id}"`);
    } else {
      renderer.prepareViewElementSource(id);
    }
  };
  onTraceUpdates = (nodes: Set<NativeType>) => {
    this.emit('traceUpdates', nodes);
  };
  onHookOperations = (operations: Array<number>) => {
    if (__DEBUG__) {
      debug('onHookOperations', operations);
    }