/// <reference types="react" />
import type { ImageInput } from '@duely/core';
import { DocumentNode } from 'graphql';
export declare const Util: {
    readFileAsDataUrl: typeof readFileAsDataUrl;
    readFileAsImageInput: typeof readFileAsImageInput;
    estimateImageColor: typeof estimateImageColor;
    findFirstFocusableChild: typeof findFirstFocusableChild;
    createGraphQLPlaygroundUrl: typeof createGraphQLPlaygroundUrl;
    fetchRecapthcaToken: typeof fetchRecapthcaToken;
    getReactElement: typeof getReactElement;
};
declare function createGraphQLPlaygroundUrl(query?: DocumentNode, variables?: object, tabName?: string): URL;
declare function readFileAsDataUrl(file: File | null | undefined): Promise<string | null>;
declare function readFileAsImageInput(file: File | null | undefined): Promise<ImageInput | null>;
declare function estimateImageColor(url: string): Promise<string>;
declare function findFirstFocusableChild(parent: ParentNode): Element | null;
declare global {
    interface Window {
        __duely: {
            reCAPTCHA_site_key: string;
        };
        grecaptcha: any;
    }
}
declare function fetchRecapthcaToken(action?: string): Promise<string | undefined>;
declare function getReactElement(node: React.ReactNode | ((props?: Record<string, any>) => React.ReactNode), props?: Record<string, any>): import("react").ReactNode;
export {};