import { BaseError } from 'make-error';
export declare class InvalidEnumError<T> extends BaseError {
    readonly enumValues: T[];
    constructor(enumValues: T[]);
}
type Values<T> = T[keyof T];
export declare function isEnum<Output extends {
    [s: string]: unknown;
}>(enumerator: Output, input: unknown): input is Values<Output>;
export declare function enumerated<Output extends {
    [s: string]: unknown;
}>(enumerator: Output): (input: unknown) => Values<Output>;
export {};