import type { KoaContext } from '../routes/types';
import type { ApiResponse } from '../types/api';
type ServiceLogPayload = Record<string, unknown>;
export declare const startTimer: () => (() => number);
export declare const logControllerStart: (name: string, ctx: KoaContext) => void;
export declare const logControllerSuccess: (name: string, ctx: KoaContext, durationMs: number) => void;
export declare const logControllerFailure: (name: string, error: unknown, durationMs: number) => void;
export declare const logServiceRequest: (name: string, payload?: ServiceLogPayload) => void;
export declare const logServiceSuccess: (name: string, response: ApiResponse, durationMs: number) => void;
export declare const logServiceFailure: (name: string, error: unknown, durationMs: number) => void;
export declare const observeService: <T extends ApiResponse>(name: string, payload: ServiceLogPayload | undefined, callback: () => Promise<T>) => Promise<T>;
export {};