Parse HTML string to raw DOM

strToHTML.ts

/**
 * @example
 * document.getElementById("messages").append(
 *   strToHTML('<div class="message">foo</div>')
 * );
 */
function strToHtml(rawStr: string) {
  var parser = new DOMParser();
  var html = parser.parseFromString(rawStr, 'text/html');
  return html.body.children[0];
}