/**
 * Streaming Support for LLM SDK
 *
 * Provides Server-Sent Events (SSE) parsing and streaming chat completions.
 */
import { LLMResponsePayload, StreamDelta, StreamingOptions, Message } from '../types';
/**
 * Parse a Server-Sent Events line
 */
export declare function parseSSELine(line: string): {
    event?: string;
    data?: string;
} | null;
/**
 * Parse SSE data into a StreamDelta
 */
export declare function parseStreamDelta(data: string): StreamDelta | null;
/**
 * Accumulate stream deltas into a complete message
 */
export declare class StreamAccumulator {
    private role;
    private content;
    private functionName;
    private functionArgs;
    private finishReason;
    /**
     * Add a delta to the accumulator
     */
    addDelta(delta: StreamDelta): void;
    /**
     * Get the accumulated message
     */
    getMessage(): Message;
    /**
     * Get finish reason
     */
    getFinishReason(): string;
    /**
     * Get current content
     */
    getContent(): string;
}
/**
 * Async generator that yields stream deltas from a ReadableStream
 */
export declare function streamFromResponse(response: Response): AsyncGenerator<StreamDelta, void, unknown>;
/**
 * Process a stream with callbacks
 */
export declare function processStream(stream: AsyncIterable<StreamDelta>, options: StreamingOptions): Promise<LLMResponsePayload>;
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