/**
 * Represents a value stored in the KV store, including optional metadata and expiration.
 */
export type KVStoredValue = {
    /** The string value stored for the key. */
    value: string;
    /** Optional metadata associated with the value. */
    metadata?: unknown;
    /** Optional expiration time as a UNIX timestamp (seconds). */
    expiration?: number;
};
/**
 * Interface for the mock KVNamespace, matching the Cloudflare KV API.
 */
export type MockKVNamespace = {
    /**
     * Stores a value under the given key.
     * @param _key - The key to store the value under.
     * @param _value - The value to store.
     * @param _options - Optional expiration and metadata.
     */
    put: (_key: string, _value: string, _options?: {
        expirationTtl?: number;
        expiration?: number;
        metadata?: unknown;
    }) => Promise<void>;
    /**
     * Retrieves a value by key.
     * @param _key - The key to retrieve.
     * @param _opts - Optional type hint for JSON parsing.
     * @returns The value as a string, parsed JSON, or null if not found or expired.
     */
    get: (_key: string, _opts?: {
        type?: "text" | "json";
    }) => Promise<string | Record<string, unknown> | unknown[] | null>;
    /**
     * Retrieves a value and its metadata by key (Cloudflare-compatible).
     * @param _key - The key to retrieve.
     * @param _opts - Optional type hint for JSON parsing.
     * @returns An object with value and metadata, or null if not found or expired.
     */
    getWithMetadata: (_key: string, _opts?: {
        type?: "text" | "json";
    }) => Promise<{
        value: string | Record<string, unknown> | unknown[] | null;
        metadata: unknown;
    } | null>;
    /**
     * Deletes a key from the store.
     * @param _key - The key to delete.
     */
    delete: (_key: string) => Promise<void>;
    /**
     * Lists keys in the store, optionally filtered by prefix and/or limited in count.
     * @param _options - Optional prefix and limit.
     * @returns An object containing the list of key names and a completion flag.
     */
    list: (_options?: {
        prefix?: string;
        limit?: number;
    }) => Promise<{
        keys: {
            name: string;
        }[];
        list_complete: boolean;
    }>;
    /**
     * Dumps the entire store for inspection.
     * @returns An object mapping keys to their stored values.
     */
    dump: () => Record<string, KVStoredValue>;
};
/**
 * Internal value structure for each stored KV entry.
 */
export type KVEntry = {
    /** The string value stored for the key. */
    value: string;
    /** Optional expiration time as a UNIX timestamp in milliseconds. */
    expiresAt?: number;
    /** Optional metadata associated with the value. */
    metadata?: unknown;
};
/**
 * Underlying storage map (key → KVEntry).
 */
export type KVMap = Record<string, KVEntry>;