/**
 * 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;