export interface CssVarSim {
    initShim(): Promise<void>;
    addLink(linkEl: HTMLLinkElement): HTMLLinkElement;
    addGlobalStyle(styleEl: HTMLStyleElement): void;
    createHostStyle(hostEl: HTMLElement, templateName: string, cssText: string, isScoped: boolean): HTMLStyleElement;
    removeHost(hostEl: HTMLElement): void;
    updateHost(hostEl: HTMLElement): void;
    updateGlobal(): void;
}