import type { StorageProvider, StorageStats } from './storage-provider.js';
/**
 * InMemoryStorageProvider — test-friendly StorageProvider backed by a Map.
 *
 * No filesystem access. All paths are normalized to forward-slash POSIX form.
 * Useful for unit tests and DI scenarios where real I/O is undesirable.
 */
export declare class InMemoryStorageProvider implements StorageProvider {
    private files;
    /** Track write timestamps for stat(). Key = normalized path, value = epoch ms. */
    private mtimes;
    private norm;
    read(filePath: string): Promise<string | undefined>;
    write(filePath: string, data: string): Promise<void>;
    append(filePath: string, data: string): Promise<void>;
    exists(filePath: string): Promise<boolean>;
    list(dirPath: string): Promise<string[]>;
    delete(filePath: string): Promise<void>;
    deleteDir(dirPath: string): Promise<void>;
    isDirectory(targetPath: string): Promise<boolean>;
    mkdir(dirPath: string, _options?: {
        recursive?: boolean;
    }): Promise<void>;
    rename(oldPath: string, newPath: string): Promise<void>;
    copy(srcPath: string, destPath: string): Promise<void>;
    stat(targetPath: string): Promise<StorageStats | undefined>;
    readSync(filePath: string): string | undefined;
    writeSync(filePath: string, data: string): void;
    existsSync(filePath: string): boolean;
    listSync(dirPath: string): string[];
    isDirectorySync(targetPath: string): boolean;
    mkdirSync(_dirPath: string, _options?: {
        recursive?: boolean;
    }): void;
    statSync(targetPath: string): StorageStats | undefined;
    appendSync(filePath: string, data: string): void;
    deleteSync(filePath: string): void;
    renameSync(oldPath: string, newPath: string): void;
    copySync(srcPath: string, destPath: string): void;
    deleteDirSync(dirPath: string): void;
    /** Return a shallow copy of the internal state for test assertions. */
    snapshot(): Map<string, string>;
    /** Reset all stored files. */
    clear(): void;
}
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