export declare class LocalStorageAdapter {
    private readonly basePath;
    constructor(basePath: string);
    private filePath;
    upload(fileId: string, data: Blob | ArrayBuffer, contentType: string): Promise<void>;
    get(fileId: string): Promise<Response>;
    delete(fileId: string): Promise<void>;
    exists(fileId: string): Promise<boolean>;
    stat(key: string): Promise<{
        size: number;
        contentType: string;
    } | null>;
    list(prefix: string): Promise<string[]>;
}
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