code: function isAsyncMode(object) {
      {
        if (!hasWarnedAboutDeprecatedIsAsyncMode) {
          hasWarnedAboutDeprecatedIsAsyncMode = true;
          lowPriorityWarning$1(false, 'The ReactIs.isAsyncMode() alias has been deprecated, ' + 'and will be removed in React 17+. Update your code to use ' + 'ReactIs.isConcurrentMode() instead. It has the exact same API.');
        }
      }
      return isConcurrentMode(object) || typeOf(object) === REACT_ASYNC_MODE_TYPE;
    }
docs: AsyncMode should be deprecated