devToolsExtension does not accept enhancers

[inxilpro]

The devToolsExtension enhancer in pageScript.js take three arguments: reducer, preloadedState, and config. This means that if you have an enhancer chain like:

const compose = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__;
const enhancer = compose(
    applyMiddleware(...middleware),
    middlewareThatUsesEnhancers()
);

The enhancers passed by middlewareThatUsesEnhancers to createStore will never get fired. This is the cause of issues like redux-offline/redux-offline#66 — any enhancer that internally calls additional enhancers will not work with redux devtools as the rightmost enhancer.

I'll try to put together a PR shortly, but in the interim, you can add the following to your enhancer chain:

const compose = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__;
const enhancer = compose(
    applyMiddleware(...middleware),
    middlewareThatUsesEnhancers(),
    // Add this to the end of your enhancer chain:
    (createStore) => (reducer, preloadedState, enhancer) => enhancer(createStore)(reducer, preloadedState)
);

[inxilpro]

It looks like if you pass a configuration object, it does accept reducers, but otherwise it does not.

[zalmoxisus]

It looks like if you pass a configuration object, it does accept reducers, but otherwise it does not.

Yes, it's intended, see #310 (comment).

However, we better just throw an error in the previous case to avoid the confusion. Not to break those who are using it (as intended initially), we should start with a warning.