interface RegistryBoundary<State> {
    capture(): State;
    restore(state: State): void;
    equals?(left: State, right: State): boolean;
}
/**
 * 扩展实例工厂只能创建候选实例；注册表写入必须留在插件加载事务中。
 * 工厂返回或抛错后都复验全局状态，避免无效候选留下注册、删除或清空副作用。
 */
export declare function invokeExtensionFactoryWithRegistryBoundary<Result, State>(label: string, operation: () => Result, boundary: RegistryBoundary<State>): Result;
export {};