Function reducer

examples/files/hooks/useReducer.js:4–11

(state, action)

import { View, Text, TextInput } from 'react-native'

function reducer(state, action) {
  switch (action.type) {
    case 'first':
      return { ...state, first: action.value }
    case 'last':
      return { ...state, last: action.value }
  }
}

export default function App() {
  const [state, dispatch] = useReducer(reducer, { first: '', last: '' })