import { B as BaseStorage, D as DownloadProgress } from '../../base-storage-CfkDwX0r.js';

/**
 * Model Sync Service
 *
 * Downloads model weights progressively from a sync server,
 * with resume support and verification.
 */

declare class ModelSync {
    private storage;
    private syncUrl;
    private onProgress?;
    private abortController;
    private currentProgress;
    private isPaused;
    constructor(storage: BaseStorage, syncUrl: string, onProgress?: (progress: DownloadProgress) => void);
    /**
     * Start or resume syncing a model
     */
    startSync(modelId: string): Promise<void>;
    /**
     * Pause the current sync
     */
    pauseSync(): Promise<void>;
    /**
     * Resume the current sync
     */
    resumeSync(): Promise<void>;
    /**
     * Cancel the current sync
     */
    cancelSync(): Promise<void>;
    /**
     * Get current progress
     */
    getProgress(): DownloadProgress | null;
    /**
     * Check if syncing
     */
    isSyncing(): boolean;
    /**
     * Fetch model manifest from sync server
     */
    private fetchManifest;
    /**
     * Download tokenizer files
     */
    private downloadTokenizer;
    /**
     * Download a tensor's chunks
     */
    private downloadTensor;
    /**
     * Compute SHA-256 hash of data
     */
    private computeHash;
    /**
     * Emit progress update
     */
    private emitProgress;
}

/**
 * Sync Factory
 *
 * Creates ModelSync instances.
 */

interface SyncOptions {
    /** Sync server URL */
    syncUrl: string;
    /** Progress callback */
    onProgress?: (progress: DownloadProgress) => void;
}
/**
 * Create a model sync service
 */
declare function createModelSync(storage: BaseStorage, options: SyncOptions): ModelSync;
/**
 * Default sync server URLs
 */
declare const DEFAULT_SYNC_URLS: {
    readonly production: "https://models.affectively.ai";
    readonly development: "http://localhost:8787";
};

export { DEFAULT_SYNC_URLS, ModelSync, type SyncOptions, createModelSync };