import type { HTMLTextStyle } from '../../HtmlTextStyle';
/**
 * takes the font families and returns a css string that can be injected into a style tag
 * It will contain the font families and the font urls encoded as base64
 * @param fontFamilies - The font families to load
 * @param style - The style to load the font with (used for the first font family)
 * @returns - The css string
 */
export declare function getFontCss(fontFamilies: string[], style: HTMLTextStyle): Promise<string>;
