Plugin is unexpectedly **writing** to our Vue app

[axelcostaspena]

Very unexpectedly, this morning the Vue app I was developing started failing after I've renamed a component, and then even reverting all changes it continued failing. After debugging deeper, I've found the inject keys for the component (which come from a mixin, the component references the mixin and the mixin contains "inject") weren't containing the expected value. I've used a Proxy() to catch who was writing to the "inject" arrays, and it seemed to be this plugin 🤯

This stacktrace shows the plugin source code calling Object.assign on my app data

Due to restrictions I can't share codebase or an usable demo of the app, but hope those screenshots help bring context and maybe reproduce, component uses two mixins and each one of them brings an inject array which Vue combines together.

[skirtles-code]

I think I found the underlying cause of this. I've attempted a fix in #1050.

If you'd like to test out my fix you can use the pkg-pr-new builds from the PR.