Catch accidental usages of mutable default state values #658
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fixes #644.
Note: this will raise an exception if someone tries to use a proto type in a state class. Before this, we weren't throwing an exception but we were silently not properly serializing & deserializing the proto state (effectively not updating the proto). We'll need to call this out when we sync downstream, and maybe we should support protos properly, but this is at least more explicit.