export declare function querySelector(selector: string): Element | null;
/**
 * Drop everything inside <...> (i.e., tags/elements), and keep the text.
 * Unlike browser innerText, this removes newlines; it also doesn't handle
 * un-encoded `<` or `>` characters very well, so don't feed it malformed HTML
 */
export declare function html2Str(html: string): string;
export declare const IS_BROWSER: boolean;
