/**
 * Top level types to avoid circular dependencies
 */
import { type JSONSchemaType } from "ajv";
import type { EngineResponse } from "./EngineResponse.js";
/**
 * Parameters for sending a query.
 */
export interface QueryEngineParamsBase {
    query: string;
}
export interface QueryEngineParamsStreaming extends QueryEngineParamsBase {
    stream: true;
}
export interface QueryEngineParamsNonStreaming extends QueryEngineParamsBase {
    stream?: false | null;
}
/**
 * A query engine is a question answerer that can use one or more steps.
 */
export interface QueryEngine {
    /**
     * Query the query engine and get a response.
     * @param params
     */
    query(params: QueryEngineParamsStreaming): Promise<AsyncIterable<EngineResponse>>;
    query(params: QueryEngineParamsNonStreaming): Promise<EngineResponse>;
}
type Known = {
    [key: string]: Known;
} | [Known, ...Known[]] | Known[] | number | string | boolean | null;
export type ToolMetadata<Parameters extends Record<string, unknown> = Record<string, unknown>> = {
    description: string;
    name: string;
    /**
     * OpenAI uses JSON Schema to describe the parameters that a tool can take.
     * @link https://json-schema.org/understanding-json-schema
     */
    parameters?: Parameters;
};
/**
 * Simple Tool interface. Likely to change.
 */
export interface BaseTool<Input = any> {
    /**
     * This could be undefined if the implementation is not provided,
     *  which might be the case when communicating with a llm.
     *
     * @return {JSONValue | Promise<JSONValue>} The output of the tool.
     */
    call?: (input: Input) => JSONValue | Promise<JSONValue>;
    metadata: Input extends Known ? ToolMetadata<JSONSchemaType<Input>> : ToolMetadata;
}
export type BaseToolWithCall<Input = any> = Omit<BaseTool<Input>, "call"> & {
    call: NonNullable<Pick<BaseTool<Input>, "call">["call"]>;
};
/**
 * An OutputParser is used to extract structured data from the raw output of the LLM.
 */
export interface BaseOutputParser<T> {
    parse(output: string): T;
    format(output: string): string;
}
/**
 * StructuredOutput is just a combo of the raw output and the parsed output.
 */
export interface StructuredOutput<T> {
    rawOutput: string;
    parsedOutput: T;
}
export type ToolMetadataOnlyDescription = Pick<ToolMetadata, "description">;
export declare class QueryBundle {
    queryStr: string;
    constructor(queryStr: string);
    toString(): string;
}
export type UUID = `${string}-${string}-${string}-${string}-${string}`;
export type JSONValue = string | number | boolean | JSONObject | JSONArray;
export type JSONObject = {
    [key: string]: JSONValue;
};
type JSONArray = Array<JSONValue>;
export type ToolOutput = {
    tool: BaseTool | undefined;
    input: JSONObject;
    output: JSONValue;
    isError: boolean;
};
export {};