export declare function trim(string: string): string;
export declare function camelCase(name: string): string;
export declare function hasClass(el: HTMLElement, cls: string): boolean;
export declare function addClass(el: HTMLElement, cls: string): void;
export declare function removeClass(el: HTMLElement, cls: string): void;
export declare function setStyle(element: HTMLElement, style: Partial<Omit<CSSStyleDeclaration, 'parentRule' | 'length' | 'getPropertyPriority' | 'getPropertyValue' | 'item' | 'removeProperty' | 'setProperty'>>): void;
export declare function getComputedStyle<T extends Element>(element: T): CSSStyleDeclaration;
export declare function getComputedStyle<T extends Element, K extends keyof CSSStyleDeclaration>(element: T, key: K): CSSStyleDeclaration[K];
export declare function scrollParent(node: Element): Node | Element;