import { DocumentRegistry } from '@jupyterlab/docregistry';
import { NotebookPanel, INotebookModel } from '@jupyterlab/notebook';
import { CommandRegistry } from '@lumino/commands';
import { IDisposable } from '@lumino/disposable';
/**
 * A WidgetExtension for Notebook's toolbar to open a `VoilaGridstack` widget.
 */
export declare class EditorButton implements DocumentRegistry.IWidgetExtension<NotebookPanel, INotebookModel> {
    /**
     * Instantiate a new NotebookButton.
     * @param commands The command registry.
     */
    constructor(commands: CommandRegistry);
    /**
     * Create a new extension object.
     */
    createNew(panel: NotebookPanel): IDisposable;
    private _commands;
}
/**
 * A WidgetExtension for Notebook's toolbar to launch Voila.
 */
export declare class VoilaButton implements DocumentRegistry.IWidgetExtension<NotebookPanel, INotebookModel> {
    /**
     * Create a new extension object.
     */
    createNew(panel: NotebookPanel): IDisposable;
}