export interface SessionTodo {
    id: number;
    text: string;
    done: boolean;
}
export interface DurableSessionState {
    todos: SessionTodo[];
    goal: string | null;
    rules: string[];
    btwMessages: string[];
}
export declare function emptySessionState(): DurableSessionState;
export declare function loadSessionState(sessionId: string): DurableSessionState;
export declare function saveSessionState(sessionId: string, state: DurableSessionState): void;
export declare function loadSessionTodos(sessionId: string): SessionTodo[];
export declare function saveSessionTodos(sessionId: string, todos: SessionTodo[]): void;
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