import type { EditorState } from './editor-state.js';
/**
 * Determines whether a lifecycle transition is part of the frozen state graph.
 *
 * @param currentState - State currently owned by the editor.
 * @param nextState - Requested replacement state.
 * @returns Whether the transition is valid.
 */
export declare function canTransitionEditorState(currentState: Readonly<EditorState>, nextState: Readonly<EditorState>): boolean;
/**
 * Rejects lifecycle state changes that are not part of the frozen state graph.
 *
 * @param currentState - State currently owned by the editor.
 * @param nextState - Requested replacement state.
 * @throws Error when the transition violates the lifecycle invariant.
 */
export declare function assertEditorStateTransition(currentState: Readonly<EditorState>, nextState: Readonly<EditorState>): void;