import type { PrefixFormatter } from "../config-types.js";
/**
 * Pluggable embedder. Transforms text into vector representations.
 * Built-in: transformers.js (local), OpenAI (API key required).
 */
export interface Embedder {
    embed(text: string, signal?: AbortSignal): Promise<Float32Array>;
    embedBatch(texts: string[], signal?: AbortSignal): Promise<Float32Array[]>;
    readonly dimensions: number;
    /** Model identifier (e.g. "Xenova/all-MiniLM-L6-v2"). Optional for backwards compatibility. */
    readonly model?: string;
    /** Maximum input characters this embedder can handle before truncation. */
    readonly maxInputChars?: number;
    /** Optional prefix formatter for asymmetric query/document embedding. */
    readonly prefix?: PrefixFormatter;
}
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