import type { EmbedderConfig } from '../types/index.js';
export declare class LocalEmbedder {
    private config;
    constructor(config?: Partial<EmbedderConfig>);
    get dimensions(): number;
    get model(): string;
    /**
     * Generate embeddings for an array of texts.
     * Processes in batches to avoid overwhelming the embedding server.
     */
    embed(texts: string[]): Promise<number[][]>;
    /**
     * Generate a single embedding vector for one text.
     */
    embedOne(text: string): Promise<number[]>;
    private embedViaOllama;
    private embedViaLlamaCpp;
    /**
     * Check if the embedding provider is available and the model is loaded.
     */
    isAvailable(): Promise<boolean>;
    /**
     * Pull the embedding model if not already present (Ollama only).
     */
    ensureModel(): Promise<void>;
}
/**
 * Compute cosine similarity between two vectors.
 * Used as fallback when sqlite-vec is not available.
 */
export declare function cosineSimilarity(a: number[], b: number[]): number;
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