IE11 - Object.isFrozen: argument is not an object

[michael-haberzettel]

Hello,

I've encoutered an issue with redux-toolkit and IE11. The following error occurs when starting webpack dev server. Fortunatly the problem doesn't exist in bundled app !

The error :
Object.isFrozen: argument is not an object

After some investigation, this error seems to be related to immer library : immerjs/immer#600. A fix has been published in version 6.0.6

After manual setting the latest version of immer in internal dependencies of redux-toolkit, my application works again.

Would it be possible to update the version of immer in your library ?

PS : sorry for my poor english.

[markerikson]

We already specify "immer": "^6.0.1",, so it's just a question of when you happened to install or update the dependencies in your own project.

[michael-haberzettel]

Thank you for your response. Indeed an update was enough to solve the problem.