import OpenAI from "openai";
import { Config, UsageMetadata } from "../_core/types/index.js";
import { ProviderInfo } from "./provider-detection.js";
export type TrackUsageFn = (data: any) => void;
export declare class StreamingWrapper implements AsyncIterable<OpenAI.ChatCompletionChunk> {
    private stream;
    private config;
    private providerInfo;
    private model;
    private metadata?;
    private startTime;
    private firstTokenTime?;
    private requestId;
    private usage;
    private messages;
    private accumulatedContent;
    private trackFn;
    constructor(stream: AsyncIterable<OpenAI.ChatCompletionChunk>, config: Config, providerInfo: ProviderInfo, model: string, messages: any[], trackFn: TrackUsageFn, metadata?: UsageMetadata);
    private buildTrackingPayload;
    [Symbol.asyncIterator](): AsyncIterator<OpenAI.ChatCompletionChunk>;
}
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