export declare namespace Tracer {
    function sync<T>(delegate: () => T, id: string): T;
    type AsyncDelegatePromise<T> = Promise<T>;
    type AsyncDelegateFunction<T> = () => Promise<T>;
    type AsyncDelegate<T> = AsyncDelegatePromise<T> | AsyncDelegateFunction<T>;
    function async<T>(delegate: AsyncDelegate<T>, id: string): Promise<T>;
}