import type { Intersection } from 'tslang';
import * as x from 'x-value';
declare global {
    namespace Backit {
        interface BackStates {
        }
        type BackStatesDefinition = Intersection<BackStates[keyof BackStates]>;
    }
}
export type BackStatesInReturn<TMediumName extends XValue.UsingName> = {
    [TKey in keyof Backit.BackStatesDefinition]?: Backit.BackStatesDefinition[TKey] extends infer TInput extends x.TypeInMediumsPartial ? x.MediumTypeOf<TMediumName, TInput> : never;
} extends infer TBackStates ? {
    states?: TBackStates | TBackStates[];
} : never;
export type BackStatesDefinition = Record<string, x.XTypeOfValue<unknown>>;
export type GeneralXBackStatesInReturn = x.XTypeOfValue<{
    states?: object | object[];
}>;
export declare function getXBackStatesInReturn(): GeneralXBackStatesInReturn;
export declare function extendBackStates(backStates: Backit.BackStates[keyof Backit.BackStates]): void;