Predictable state container for JavaScript apps
28 Jan 2016 · Newest first
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createStore() now receives an enhancer such as applyMiddleware() as the last optional argument (#1294)You don’t have to change anything. However if you use store enhancers such as or Redux DevTools you might like that you can now express the same code in a more JavaScript-friendly way:
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applyMiddleware()- const createStoreWithMiddleware = applyMiddleware(
- thunk,
- logger
- )(createStore)
- const store = createStoreWithMiddleware(
- rootReducer,
- initialState
- )
+ const store = createStore(
+ rootReducer,
+ initialState,
+ applyMiddleware(thunk, logger)
+ )
For multiple store enhancers you can still use compose() but in a similar more straightforward fashion:
- const finalCreateStore = compose(
- applyMiddleware(thunk, logger),
- DevTools.instrument()
- )(createStore)
- const store = finalCreateStore(reducer, initialState)
+ const store = createStore(
+ reducer,
+ initialState,
+ compose(
+ applyMiddleware(thunk, logger),
+ DevTools.instrument()
+ )
+ )
The second initialState argument stays optional so you can skip it when specifying the enhancer.
The old way of doing things still works, too. We’re just adding a nicer way to apply enhancers, that’s all.
Happy reducing!