import type { LegacyMemoryEmbeddingRecord, MemoryIndexSourceRecord } from '../../contracts/vector_index';
export interface EmbeddingsLike {
    embedDocuments(texts: string[]): Promise<number[][]>;
    embedQuery(text: string): Promise<number[]>;
}
/** 无旧版向量可复用时的空映射，供增量同步与重建路径共用。 */
export declare const NO_LEGACY_EMBEDDINGS: Map<string, LegacyMemoryEmbeddingRecord>;
export interface VectorIndexEmbeddingContext {
    embeddings: EmbeddingsLike;
    embeddingModelId: string;
    dimension: number;
}
export declare const createVectorIndexVector: (vector: number[], dimension: number, subject: string) => Float32Array<ArrayBuffer>;
export declare const probeVectorIndexDimension: (embeddings: EmbeddingsLike) => Promise<number>;
export declare const embedMemoryIndexSources: (embeddings: EmbeddingsLike, modelId: string, dimension: number, sources: MemoryIndexSourceRecord[], legacyById: ReadonlyMap<string, LegacyMemoryEmbeddingRecord>) => Promise<{
    source: MemoryIndexSourceRecord;
    vector: Float32Array<ArrayBuffer>;
}[]>;