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Immutable and type-checked state and actions for Redux
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gcanti/redux-tcomb
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Immutable and type-checked state and actions for Redux (built ontcomb library)
import{createStore,applyMiddleware}from'redux'importtfrom'tcomb'import{createCheckedMiddleware,createCheckedReducer,createActionType}from'redux-tcomb'importcreateLoggerfrom'redux-logger'// typesconstState=t.IntegerconstPositiveInteger=t.refinement(t.Integer,n=>n>=0,'PositiveInteger')constAction=createActionType({INCREMENT:t.interface({delta:PositiveInteger}),DECREMENT:t.interface({delta:PositiveInteger})})// reducerfunctionreducer(state=0,action){switch(action.type){case'INCREMENT' :returnstate+action.deltacase'DECREMENT' :returnstate-action.delta}returnstate}// configureconststore=createStore(createCheckedReducer(reducer,State),applyMiddleware(createCheckedMiddleware(Action),createLogger()))// okstore.dispatch({type:'INCREMENT',delta:2})store.dispatch(Action.INCREMENT({delta:2}))// bad payloadstore.dispatch({type:'INCREMENT',delta:-2})// throws [tcomb] Invalid value -2 supplied to Action(INCREMENT)/delta: PositiveInteger// typostore.dispatch({type:'INCRE',delta:1})// throws [tcomb] Invalid value { "type": "INCRE", "delta": 1 } supplied to Action
typeReducer=(state:State,action:Action)=>State;
createCheckedMiddleware(Action: Type) -> FunctioncreateCheckedReducer(reducer: Reducer, State: Type) -> ReducercreateActionType(actions: {[key: string]: Type}) -> Type
The MIT License (MIT)
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Immutable and type-checked state and actions for Redux
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