import { EditorState } from "prosemirror-state";
import { UxCommand } from "../constants";
import { Command, Dispatch } from "../types";
/**
 * Defines the behaviour for pressing 'backspace' at the start of a heading.
 *
 * It attempts to convert the heading to a paragraph.
 */
export declare function escapeFromStart(state: EditorState, dispatch?: Dispatch): boolean;
export declare const toggleHeading1: Command;
export declare const toggleHeading2: Command;
export declare const ux: {
    [UxCommand.DeleteBackward]: typeof escapeFromStart;
    [UxCommand.ToggleHeading1]: Command;
    [UxCommand.ToggleHeading2]: Command;
};