declare global {
    interface Crypto {
        randomUUID: () => string;
    }
}
/**
 * rudimentary fallback uuid generator for older browsers not supporting crypto.randomUUID()
 * @returns goodenough pseudo uuid v4
 */
export declare function legacyFallbackUUID(): string;
export declare function v4(): string;
export declare const fragmentUuidIdentifier = "collage-fragment";
export declare function createFragmentUUID(): string;
export declare function isCollageUUID(id: string): boolean | "";