![]() You need to explicitly install packages like redux-thunk or redux-promise to use it. Middleware is created by the community and does not ship with Redux by default. Async actions are usually asynchronous primitives like Promises, Observables, or thunks. However, if you wrap createStore with applyMiddleware, the middleware can interpret actions differently, and provide support for dispatching async actions. Notes † The “vanilla” store implementation you get by calling (/api/createstore) only supports plain object actions and hands them immediately to the reducer. (Object †): The dispatched action (see notes). If you're interested, check out Flux Standard Action for recommendations on how actions could be constructed. Other than type, the structure of an action object is really up to you. It's better to use strings for type than Symbols because strings are serializable. Types can be defined as constants and imported from another module. Actions must have a type field that indicates the type of action being performed. Actions are the only way to get data into the store, so any data, whether from the UI events, network callbacks, or other sources such as WebSockets needs to eventually be dispatched as actions.
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