迁移到React 16.0.0错误：找不到模块“ react / lib / ReactComponentTreeHook”

Question

Trying to migrate from react 15.6.1 to 16.0.0 . I have updated my package.json, to "react": "16.0.0","react-dom": "16.0.0", (only things I changed so far), and from what I've understood from the changelogs, things should have gone smoothly. But they don't! From what I understand, they removed the /lib part in the v16.0.0 , hence why the module cannot be found?

Am I missing something obvious? Would appreciate any help! :)

Answer 1

You probably have two copies of React loaded.
Try this in your terminal:

npm ls react

And also:

npm ls react-dom

If either of these commands shows more than one result, then you have two copies of React, and that is not supported .

Delete all copies except the ones in the root node_modules , and file an issue with projects that specify React as a dependency . It must be a peerDependency so that a situation like this doesn't occur.