/**
 * Executes an `async` resolver function, providing the `Promise`-to-be-returned as the
 * first argument to the resolver so that the resolver can refer to the `Promise` that
 * external callers will see.
 *
 * ```ts
 * const outer = selfAwareAsync(async inner => {
 *  console.log(outer === inner); // true
 * });
 * ```
 *
 * This utility exists to reduce boilerplate in cases where promise resolving code needs
 * to track or register its "own" `Promise` *as seen by the caller* in some way. E.g.,
 * when mapping `Promise` chains for `client.cancel()`.
 *
 * @param resolver
 * @returns
 */
export declare function selfAwareAsync<T>(resolver: (promise: Promise<T>) => Promise<T>): Promise<T>;