reactjs - React Navigation 3.x 需要循环警告

Question

React 新手)

自从将 React Navigation 升级到 3.x 后，我在控制台中收到此警告

[23:12:54] Require cycle: src/navigation/DrawerNavigator.js -> src/navigation/index.js -> src/navigation/DrawerNavigator.js

Require cycles are allowed, but can result in uninitialized values. Consider refactoring to remove the need for a cycle.

有人知道这是什么意思吗？

Answer 1

@kelset给出的解释here非常清楚。

---> File A wants something from file B -> file B wants something from file C -> file C wants something from file A ---

There is a "circle" being created, and thus the warning says this maylead to uninitialized values.

在您的情况下，这意味着 DrawerNavigation 从文件中导入/需要某些内容，该文件本身就具有 DrawerNavigation 的导入/要求。这就是创建的“圈子”。

这是警告而不是错误，因此您的应用应该可以完美运行，不会出现任何问题。