declare type Options = {
    ignoreChildren?: boolean;
    whitelist?: {
        stylesheet?: string;
        media?: string;
        rule?: string;
    };
    blacklist?: {
        stylesheet?: string;
        media?: string;
        rule?: string;
    };
};
export declare type CSSSniffRoot = {
    [sheetIndex: string]: CSSSniffStyleSheet;
};
export declare type CSSSniffStyleSheet = {
    [ruleIndex: string]: CSSSniffStyleRule | CSSSniffMediaRule;
};
export declare type CSSSniffStyleRule = {
    type: "CSSSniffStyleRule";
    selectors: string[];
    properties: string;
};
export declare type CSSSniffMediaRule = {
    type: "CSSSniffMediaRule";
    before: string;
    children: CSSSniffStyleSheet;
};
export declare function cssSniff(children: ChildNode[], options: Options, matchedCSS?: CSSSniffRoot): CSSSniffRoot;
export declare function mergeMatches(matchedCSSArray: CSSSniffRoot[]): CSSSniffRoot;
export declare function serializeCSSMatches(matchedCSS: CSSSniffRoot): string;
export declare function serializeCSSMatchesAsProperties(matchedCSS: CSSSniffRoot): string;
export declare function cssRootDiff(a: CSSSniffRoot, b: CSSSniffRoot): CSSSniffRoot;
export declare function splitSelectors(selectors: string): string[];
export {};