import { Extension } from '../../core/Extension.js';
/**
 * Protection extension — provides `editor.storage.protection` as the
 * single source of truth for document-level protection state.
 *
 * State is NOT initialized here via `onCreate` because that fires async
 * after `#createInitialState()`. Instead, `Editor.#initProtectionState()`
 * writes to storage before ProseMirror plugins init.
 */
export const Protection: Extension<Record<string, never>, {
    /** @type {import('@superdoc/document-api').DocumentProtectionState} */
    state: import('@superdoc/document-api').DocumentProtectionState;
    /** Whether state has been populated from the document's settings.xml. */
    initialized: boolean;
    /**
     * Host editability snapshot taken when protection was first enforced.
     * Restored when protection is cleared. `null` means protection has not
     * overridden editability (or has already been cleared).
     * @type {boolean | null}
     */
    editableBaseline: boolean | null;
}>;
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