}
    
    
    let isBackendStorageAPISupported = false;
    try {
      localStorage.getItem('test');
      isBackendStorageAPISupported = true;
    } catch (error) {}
    bridge.send('isBackendStorageAPISupported', isBackendStorageAPISupported);
    setupHighlighter(bridge, this);
    setupTraceUpdates(this);
  }
  get rendererInterfaces(): {[key: RendererID]: RendererInterface, ...} {
    return this._rendererInterfaces;
  }
  clearErrorsAndWarnings = ({rendererID}: {|rendererID: RendererID|}) => {
    const renderer = this._rendererInterfaces[rendererID];
    if (renderer == null) {
      console.warn(`Invalid renderer id "${rendererID}"`);
    } else {
      renderer.clearErrorsAndWarnings();
    }
  };
  clearErrorsForFiberID = ({id, rendererID}: ElementAndRendererID) => {
    const renderer = this._rendererInterfaces[rendererID];
    if (renderer == null) {
      console.warn(`Invalid renderer id "${rendererID}"`);
    } else {
      renderer.clearErrorsForFiberID(id);
    }