微信小程序 TypeError: _typeof2 is not a function

修改一下 @babel/runtime/helpers/typeof.js 文件 全部替换 即可 

function _typeof2(o) {
  "@babel/helpers - typeof";
  return (_typeof2 = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function(o) {
      return typeof o;
  } : function(o) {
      return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
  })(o);
}
 
 
function _typeof(o) {
  return "function" == typeof Symbol && "symbol" === _typeof2(Symbol.iterator) ? module.exports = _typeof = function(o) {
      return _typeof2(o);
  } : module.exports = _typeof = function(o) {
      return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : _typeof2(o);
  }, _typeof(o);
}
 
 
module.exports = _typeof;