/**
 * In-memory secure storage (for testing and development)
 */
import type { SecureStorageOptions, StorageResult } from "./types";
import { BaseSecureStorageAdapter } from "./adapter";
/**
 * Memory-only storage adapter
 *
 * Data is NOT persisted and will be lost on app restart.
 * Use only for testing or ephemeral sessions.
 */
export declare class MemorySecureStorage extends BaseSecureStorageAdapter {
    readonly name = "memory";
    readonly available = true;
    private store;
    constructor(options?: SecureStorageOptions);
    set(key: string, value: string): Promise<StorageResult<void>>;
    get(key: string): Promise<StorageResult<string | null>>;
    setItem(key: string, value: string): Promise<void>;
    getItem(key: string): Promise<string | null>;
    delete(key: string): Promise<StorageResult<void>>;
    has(key: string): Promise<StorageResult<boolean>>;
    keys(): Promise<StorageResult<string[]>>;
    clear(): Promise<StorageResult<void>>;
}
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