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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | 5x 5x 5x 5x 27x 27x 27x 90x 36x 90x 36x 27x | export default function flattenReducers(reducerA, reducerB) { const initialStateA = reducerA(); const initialStateB = reducerB(); const initialState = { ...initialStateA, ...initialStateB }; return function(state = initialState, action) { const stateA = {}; const stateB = {}; Object.keys(state).forEach(key => { if (initialStateA[key]) { stateA[key] = state[key]; } if (initialStateB[key]) { stateB[key] = state[key]; } }); return { ...state, ...reducerA(stateA, action), ...reducerB(stateB, action), }; }; } |