extensions/amp-story/1.0/amp-story-system-layer.js
/**
   * Reacts to updates to whether sharing UIs may be shown, and updates the UI
   * accordingly.
   * @param {boolean} canShowSharingUis
   * @private
   */
Reacts to updates to whether sharing UIs may be shown, and updates the UI
accordingly.
@param {boolean} canShowSharingUis
@private
Reacts to updates to whether sharing UIs may be shown and updates the UI accordingly . @param { boolean } canShowSharingUis @private
onCanShowSharingUisUpdate_(canShowSharingUis) {
    this.vsync_.mutate(() => {
      this.getShadowRoot().classList.toggle(
        'i-amphtml-story-no-sharing',
        !canShowSharingUis
      );
    });
  }
onCanShowSharingUisUpdate_ ( canShowSharingUis ) { this . vsync_ . mutate ( ( ) => { this . getShadowRoot ( ) . classList . toggle ( 'i-amphtml-story-no-sharing' , ! canShowSharingUis ) ; } ) ; }
Reacts to updates to whether sharing UIs may be shown, and updates the UI
 accordingly.
Reacts to updates to whether sharing UIs may be shown and updates the UI accordingly .