vendors/tempy.js/clone
    function clone(obj) {
      if (obj === null || typeof obj !== "object")
        return obj;
      if (obj instanceof Object)
        var copy = { __proto__: getPrototypeOf(obj) };
      else
        var copy = /* @__PURE__ */ Object.create(null);
      Object.getOwnPropertyNames(obj).forEach(function(key) {
        Object.defineProperty(copy, key, Object.getOwnPropertyDescriptor(obj, key));
      });
      return copy;
    }