import { Span } from './spans';
import { SpanData, GenerationSpanData } from './span-data';
/**
 * Returns the current time in ISO 8601 format.
 */
export declare function timeIso(): string;
/**
 * Generates a new trace ID.
 */
export declare function genTraceId(): string;
/**
 * Generates a new span ID.
 */
export declare function genSpanId(): string;
/**
 * Generates a new group ID.
 */
export declare function genGroupId(): string;
/**
 * Helper function to handle response spans, similar to Python's context manager.
 * @param spanData The data for the span
 * @param callback The async function to execute within the span
 * @returns The result of the callback function
 */
export declare function withResponseSpan<T>(spanData: SpanData, callback: (span: Span<SpanData>) => Promise<T>): Promise<T>;
/**
 * Helper function to handle generation spans, similar to Python's context manager.
 * @param input The sequence of input messages sent to the model
 * @param model The model identifier used for the generation
 * @param modelConfig The model configuration (hyperparameters) used
 * @param callback The async function to execute within the span
 * @returns The result of the callback function
 */
export declare function withGenerationSpan<T>(input: Array<Record<string, any>> | null, model: string | null, modelConfig: Record<string, any> | null, callback: (span: Span<GenerationSpanData>) => Promise<T>): Promise<T>;