Issue with Immer polyfills after upgrading to version 4.0.1

First off: 👏 for the good work on the new release! I think I just had to change one line (in a test) after the upgrade for everything to be working 👏

However, I’ve got a tiny issues with supporting older browser. I’ve done as explained here, to enableES5() for Immer - but it does not seem to be enough, as I still get an error (IE11):

The issue referred to, is 20: "Cannot use proxies if Proxy, Proxy.revocable or Reflect are not available".

Am I missing something, or is this an issue “upstream”?

[jmyrland]

I’ve added a little PR for testing 1. above: #575

(I’m unable to add any reviewers though)

[jmyrland]

Okay, it is working now. I just had to add immer as an explicit dependency to the “app” as well.

Our polyfills are loaded via a “shared” package (which had immer as a dependency). However, this did not work, unless Immer is installed for the app as well 🤷‍♀️

I’m thinking of 2 ways to potentially prevent further issues:

1. Expose a polyfill for easy-peasy, i.e. import "easy-peasy/polyfill" (By doing this, I don’t think Immer is required as an explicit dependency)
2. If an explicit dependency is required - it should be added as a peer-dependency for easy-peasy

I’m hoping that 1. resolves this, so the immer dependency can be handled by easy-peasy.

Whats your thoughts?