import { IncomingFile, PresignedUpload, StoredObject } from '../../interfaces/file.interface';
import { ExistsResult, StorageAdapter } from '../../interfaces/storage-adapter.interface';
import { LocalStorageConfig } from '../../interfaces/upload-options.interface';
/**
 * Local filesystem adapter. Fully functional (used for dev + hermetic tests).
 * Signed URLs point at a `/uploads/_local` receiver route that the Nest/Express
 * adapters mount when the driver is local, so the presigned flow works end-to-end offline.
 */
export declare class LocalAdapter implements StorageAdapter {
    readonly name = "local";
    private readonly basePath;
    private readonly publicBaseUrl;
    private readonly secret;
    constructor(cfg: LocalStorageConfig);
    private full;
    upload(file: IncomingFile, key: string): Promise<StoredObject>;
    download(key: string): Promise<NodeJS.ReadableStream>;
    delete(key: string): Promise<void>;
    exists(key: string): Promise<ExistsResult>;
    private sign;
    private verify;
    getSignedUploadUrl(key: string, opts: {
        expiresIn: number;
        contentType?: string;
    }): Promise<PresignedUpload>;
    getSignedDownloadUrl(key: string, opts: {
        expiresIn: number;
    }): Promise<string>;
    copy(srcKey: string, destKey: string): Promise<void>;
    publicUrl(key: string): string;
    readRange(key: string, start: number, end: number): Promise<Buffer>;
    /** Local-only receiver for the signed PUT flow (dev/test). */
    receiveSignedPut(key: string, exp: number, token: string, buffer: Buffer): Promise<void>;
}