export declare class DomHelper {
    static qs<T extends Element>(selector: string, scope?: Document | HTMLElement): T;
    static qsa<T extends Element>(selector: string, scope?: Document | HTMLElement): NodeListOf<T>;
    static addClass(el: Element, className: string): void;
    static removeClass(el: Element, className: string): void;
    static toggleClass(el: Element, className: string, force?: boolean): void;
}
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