code: function getTarget(node) {
    if (node === void 0) {
      return document.body
    }
    if (node === 'body' || node === true) {
      return document.body
    }
    return node instanceof window.Node ? node : document.querySelector(node)
  }
docs: Get target DOM Node
  @param {(Node|string|Boolean)} [node=document.body] DOM Node, CSS selector, or Boolean
  @return {Node} The target that the el will be appended to