src/language-js/comments.js/handlePropertyComments
function handlePropertyComments(enclosingNode, comment) {
  if (
    enclosingNode &&
    (enclosingNode.type === "Property" ||
      enclosingNode.type === "ObjectProperty")
  ) {
    addLeadingComment(enclosingNode, comment);
    return true;
  }
  return false;
}