export interface TimerInfo {
    timeout: NodeJS.Timeout;
    startTime: number;
    durationMs: number;
}
export interface ExpiringValueReturn<T> {
    value: T | undefined;
    setValue: (newValue: T, durationSeconds?: number, saveToStorage?: boolean) => () => void;
    clearValue: () => void;
    getRemainingTime: () => number;
    isActive: boolean;
}
export declare function useExpiringValue<T>(defaultDurationSeconds: number, localStorageKey?: string): ExpiringValueReturn<T>;
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