export declare class Cache<T> {
    private store;
    get(key: string): T | undefined;
    set(key: string, value: T): void;
    invalidate(key: string): void;
    findKey(predicate: (value: T) => boolean): string | undefined;
    invalidateMatching(predicate: (value: T) => boolean): void;
    sweep(thresholdMs: number): number;
    size(): number;
}
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