type Pending = {
    type: 'pending';
};
type Success<T> = {
    type: 'success';
    data: T;
};
type Failure = {
    type: 'failure';
    message: string;
    data?: unknown;
};
type Result<T> = Failure | Pending | Success<T>;
declare const isPending: <T>(result: Result<T>) => result is Pending;
declare const isSuccess: <T>(result: Result<T>) => result is Success<T>;
declare const isFailure: <T>(result: Result<T>) => result is Failure;
declare const pending: () => Pending;
declare const success: <T>(data: T) => Success<T>;
declare const failure: (message: string, data?: unknown) => Failure;
declare const resultFromPromise: <T, J>(promise: Promise<T>, formatter: (data: T) => J, errorHandler?: (data: unknown) => {
    message: string;
    data: unknown;
}) => Promise<Result<J>>;
export { isPending, isSuccess, isFailure, pending, success, failure, resultFromPromise, };
export type { Result, Pending, Success, Failure, };
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