/**
 * Get computed styles of a node
 * @param node The node to get computed styles from
 * @param styleNames Names of style to get, can be a single name or an array.
 * Default value is font-family, font-size, color, background-color
 * @returns An array of the computed styles
 */
export default function getComputedStyles(node: Node, styleNames?: string | string[]): string[];
/**
 * A shortcut for getComputedStyles() when only one style is to be retrieved
 * @param node The node to get style from
 * @param styleName The style name
 * @returns The style value
 */
export declare function getComputedStyle(node: Node, styleName: string): string;