export type FilterFontFace = (font: CSSStyleRule) => boolean;
export declare function getWebFontCSS<T extends HTMLElement>(node: T, filterFontFace?: FilterFontFace): Promise<string | void>;
export declare function embedWebFonts<T extends HTMLElement>(clonedNode: T, filterFontFace?: FilterFontFace): Promise<void>;
export type CSSRuleSelector = (cssText: string) => boolean;
export declare const injectCssRules: <T extends HTMLElement>(clonedNode: T, cssRuleSelector?: CSSRuleSelector) => void;