import { SuccessParameterReducerResult } from './types';
export declare function valid<TParsed>(value: TParsed): {
    valid: true;
    value: TParsed;
};
export declare function valid<TAlreadyParsed, TName extends string, TValue>(alreadyParsedOrValue: TAlreadyParsed, name: TName, value: TValue, rest: string[]): SuccessParameterReducerResult<{
    [name in TName]: TValue;
}, TAlreadyParsed>;
export declare function invalid(reason: string): {
    valid: false;
    reason: string;
};