import { JupyterFrontEndPlugin } from '@jupyterlab/application';
/**
 * Lets the user toggle individual left-sidebar tabs from
 * View > Appearance > Left Sidebar. Removing a widget from a `LabShell`
 * side area is done by setting `widget.parent = null`: the StackedPanel
 * emits `widgetRemoved`, which the SideBarHandler responds to by removing
 * the matching tab. The widget instance is preserved, so we can re-add it
 * later via `labShell.add` with its original rank.
 *
 * The menu placement is contributed declaratively in
 * `schema/sidebar.json`, so this plugin only registers commands and
 * applies state — it does not touch `IMainMenu` directly.
 *
 * The preference is persisted to `xtralab:sidebar` settings so the choice
 * survives reloads.
 */
declare const plugin: JupyterFrontEndPlugin<void>;
export default plugin;