[js-is-gay]

function createElement(tag, attrs = {}, ...children) {
  const elem = document.createElement(tag);
  for (let [k, v] of Object.entries(attrs)) {
    if (k.startsWith('on')) {
      elem.addEventListener(k.slice(2), v);
    } else {
      elem.setAttribute(k, v);
    }
  }
  for (let child of children) {
    elem.appendChild((child instanceof HTMLElement) ? child : document.createTextNode(child));
  }
  return elem;
}