export declare class StyleSheets {
    private rootSvg;
    private readonly loadExternalSheets;
    private readonly styleSheets;
    constructor(rootSvg: Element, loadExtSheets: boolean);
    load(): Promise<void>;
    private collectStyleSheetTexts;
    parseCssSheets(sheetTexts: string[]): void;
    private static splitSelectorAtCommas;
    private static loadSheet;
    getPropertyValue(node: Element, propertyCss: string): string | undefined;
}
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