import { InAppMessage } from "../../model/model";
export default interface InAppMessageHiddenStorage {
    exist(inAppMessage: InAppMessage, now: number): boolean;
    put(inAppMessage: InAppMessage, expireAt: number): void;
}
export declare class NoopInAppMessageHiddenStorage implements InAppMessageHiddenStorage {
    exist(inAppMessage: InAppMessage, now: number): boolean;
    put(inAppMessage: InAppMessage, expireAt: number): void;
}