/**
 * Contract interface for text embedding providers.
 *
 * No default first-party implementation is currently shipped.
 *
 * @module extensions/llm/embedding-provider
 */
/** Options passed to {@link EmbeddingProvider.embed}. */
export interface EmbeddingOptions {
    /** Model identifier (e.g. `"text-embedding-3-small"`). */
    model: string;
    /** Input texts to embed. */
    input: string[];
    /** Additional provider-specific options. */
    [key: string]: unknown;
}
/** Result returned from {@link EmbeddingProvider.embed}. */
export interface EmbeddingResult {
    /** One embedding vector per input string. */
    embeddings: number[][];
    /** Token usage statistics. */
    usage?: {
        promptTokens: number;
        totalTokens: number;
    };
}
/**
 * EmbeddingProvider contract interface.
 *
 * Implementations convert text inputs into dense vector embeddings
 * for similarity search and retrieval-augmented generation.
 */
export interface EmbeddingProvider {
    /** Generate embedding vectors for the given input texts. */
    embed(options: EmbeddingOptions): Promise<EmbeddingResult>;
}
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