export declare class TtlCache {
    private store;
    private readonly ttlMs;
    constructor(ttlMs?: number);
    get<T>(key: string): T | undefined;
    set<T>(key: string, value: T): void;
    invalidate(key: string): void;
    invalidateAll(): void;
    get size(): number;
}
export declare function cacheKey(params: Record<string, unknown>): string;
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