/**
 * The default function used to extract the text from nodes. This will just return the textContent
 * by default unless the node has a react-md FontIcon as a child. If there is a FontIcon child,
 * the node will be cloned without the FontIcon to return the textContent instead. This is because
 * the FontIcon's text content would also be returned from the node's text content.
 *
 * @param stringOrElement Either a string or an element element to convert
 * @param fontIconQuerySelector A string to use for finding font icons in the HTML Element. When
 * this is set to the empty string, the element will not be checked for font icons which _might_
 * be a slight performance boost if you are guarenteed to not use font icons
 */
export default function extractTextContent(stringOrElement: HTMLElement | string, fontIconQuerySelector?: string): string;