import type { ValidationOptions } from "./validate";
export declare const format: ({ format }: {
    format?: string;
}, value: unknown, opts?: ValidationOptions) => import("./validate").ValidationResult;
export declare function registerFormat(format: string, fn: (input: string) => boolean): void;
export declare function unregisterFormat(format: string): void;
export declare function getFormats(): string[];
export declare function setFormatAssertionDefault(enabled: boolean): void;
export declare function getFormatAssertionDefault(): boolean;