/**
 * Enum of all supported cache event types.
 *
 * @example
 * ```ts
 * cache.on(MemorizeEventType.Set,    (e) => console.log('stored',  e.key));
 * cache.on(MemorizeEventType.Delete, (e) => console.log('deleted', e.key));
 * cache.on(MemorizeEventType.Expire, (e) => console.log('expired', e.key));
 * cache.on(MemorizeEventType.Empty,  ()  => console.log('cache is empty'));
 * ```
 */
export declare enum MemorizeEventType {
    /** Fired when a response is stored in the cache. */
    Set = "set",
    /** Fired when an entry is manually removed via `delete()` or `clear()`. */
    Delete = "delete",
    /** Fired when an entry is automatically removed after its TTL elapses. */
    Expire = "expire",
    /** Fired when the last entry is removed, leaving the cache empty. */
    Empty = "empty",
    /** Fired when an entry is automatically removed because `maxEntries` was reached. */
    Evict = "evict"
}
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