Unexpected redux state mutations

[jameshadfield]

Current Behavior

Certain actions will trigger a Error: Invariant failed: A state mutation was detected between dispatches error. These errors only appear in development mode.

Behaviour observed on 19f5c2cafbb2d0276ad9d26511d146f5befb7183 (part of the master branch).

I can somewhat reliably generate this via:

• Adding a number of filters. Example error details: in the path 'controls.filters.country.0'.
• Loading a narrative which defines multiple datasets. Example error details: in the path: jsonCache.jsons.zika-inline., 'jsonCache.jsons.zika.pathname'. (My guess would be this is the promises resolving; haven't investigated.) This causes the app to crash (only when in dev mode).

[joverlee521]

I also ran into this error when loading a narrative with multiple datasets in dev mode. I'm currently working around it with

SKIP_REDUX_CHECKS=true npm run dev