import type { EditorCommand, EditorSessionState } from "./commands.js";
/** Apply a mutating editor command; returns null when the command type has no handler. @internal */
export declare function applyMutating(state: EditorSessionState, command: EditorCommand): EditorSessionState | null;
/** True when the command changes document structure (not select/undo/redo). @internal */
export declare function isStructural(command: EditorCommand): boolean;