/**
 * Creates a cache that evicts keys in fifo order
 * @param size {Number}
 */
export declare function makeFifoCache<Key extends string, Value>(size: number): {
    get: (key: Key) => Value | undefined;
    add: (key: Key, value: Value) => void;
    delete: (key: Key) => boolean;
    clear: () => void;
    size: () => number;
};
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