export declare const COMMAND: {
    BLOCK_START: string;
    BLOCK_END: string;
    FRAGMENT_START: string;
    FRAGMENT_END: string;
    CHANGE_SELECTION: string;
    BACKSPACE: string;
    BACKSPACE_BLOCK_START: string;
    BACKSPACE_PREV_WORD: string;
    REMOVE_RANGE: string;
    INSERT_TEXT: string;
    DELETE_FORWARD: string;
    INSERT_CHARACTER: string;
    SPLIT_BLOCK: string;
    UNDO: string;
    REDO: string;
    UPDATE_BLOCK_ENTITIES: string;
};