/** Checks if `result` (returned from `Promise.allSettled`) is fulfilled. */
export declare const isFulfilled: <T>(result: PromiseSettledResult<T>) => result is PromiseFulfilledResult<T>;
/** Checks if `result` (returned from `Promise.allSettled`) is rejected. */
export declare const isRejected: (result: PromiseSettledResult<unknown>) => result is PromiseRejectedResult;