/**
 * Embedding Generator Factory
 * Creates appropriate embedding provider based on configuration
 */
import type { EmbeddingProvider } from "./EmbeddingProvider.js";
/**
 * Factory class for creating embedding providers
 */
export declare class EmbeddingGenerator {
    private static instance;
    private static initializationPromise;
    /**
     * Get or create embedding provider based on configuration
     * Uses promise-based mutex to prevent concurrent initialization race condition
     */
    static getProvider(): Promise<EmbeddingProvider>;
    /**
     * Internal initialization logic (called once via mutex)
     */
    private static initializeProvider;
    /**
     * Create specific provider instance
     */
    private static createProvider;
    /**
     * Auto-detect best available provider
     * Tries in order: Transformers.js (bundled, reliable) → Ollama (fast if running)
     */
    private static autoDetectProvider;
    /**
     * Reset singleton (useful for testing)
     */
    static reset(): void;
    /**
     * Get current provider info (if initialized)
     */
    static getInfo(): {
        provider: string;
        model: string;
        available: boolean;
    } | null;
}
/**
 * Legacy API compatibility - returns provider instance
 */
export declare function getEmbeddingGenerator(): Promise<EmbeddingProvider>;
/**
 * Legacy API compatibility - resets singleton
 */
export declare function resetEmbeddingGenerator(): void;
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