Store

Container for application state and logic.

This class is abstract and cannot be instantiated.

Implementing

A store:

1. Must have instance method getInitialState with signature:

   function(): Any<S>

2. Must have either one of:

   • static method reducer with signature:

     function(state: Any<S>, message: Message): Any<S>

   • static property reducers with signature:

     {[string]: function(state: Any<S>, message: Message): Any<S>}

Single reducer variant:

let logger = new class extends Store {
  getInitialState() { return [] }
  static reducer(state, {type, value}) {

    if (type === "add") {}
      return state.concat([value]);
    }

  }
}

Object mapping Message#type to reducers:

let logger = new class extends Store {
  getInitialState() { return [] }
  static reducers = {

     add(state, {value}) {
       return state.concat([value])
     }

  }
}

Note: you can also create a store with createStore.