import { type ZodSchema } from "zod/v3";
import { IterableReadableStream } from "@langchain/core/utils/stream";
import { ChatMessage, LLMJSONSchema, LLMToolDefinition, ModelParams, ToolCallResponse, TraceParams } from "./types";
import type { BaseCallbackHandler } from "@langchain/core/callbacks/base";
type ProcessTracedEvents = () => Promise<void>;
type LLMCompletionParams = {
    messages: ChatMessage[];
    modelParams: ModelParams;
    structuredOutputSchema?: ZodSchema | LLMJSONSchema;
    callbacks?: BaseCallbackHandler[];
    baseURL?: string;
    apiKey: string;
    extraHeaders?: Record<string, string>;
    maxRetries?: number;
    config?: Record<string, string> | null;
    traceParams?: TraceParams;
    throwOnError?: boolean;
};
export declare function fetchLLMCompletion(params: LLMCompletionParams & {
    streaming: true;
}): Promise<{
    completion: IterableReadableStream<Uint8Array>;
    processTracedEvents: ProcessTracedEvents;
}>;
export declare function fetchLLMCompletion(params: LLMCompletionParams & {
    streaming: false;
}): Promise<{
    completion: string;
    processTracedEvents: ProcessTracedEvents;
}>;
export declare function fetchLLMCompletion(params: LLMCompletionParams & {
    streaming: false;
    structuredOutputSchema: ZodSchema;
}): Promise<{
    completion: Record<string, unknown>;
    processTracedEvents: ProcessTracedEvents;
}>;
export declare function fetchLLMCompletion(params: LLMCompletionParams & {
    tools: LLMToolDefinition[];
    streaming: false;
}): Promise<{
    completion: ToolCallResponse;
    processTracedEvents: ProcessTracedEvents;
}>;
export {};
//# sourceMappingURL=fetchLLMCompletion.d.ts.map