Function reducer

src/loading/context.js:102–119

(state, action)

}

const reducer = (state, action) => {
  switch (action.type) {
    case 'set':
      action.loaders.forEach(({ id, key }) => {
        state[key].add(id)
      })

      return { ...state }
    case 'clear':
      action.loaders.forEach(({ id, key }) => {
        state[key].delete(id)
      })

      return { ...state }
    default:
      throw new Error(`Unexpected action: ${action.type}`)
  }
}

export const LoadingProvider = ({ children }) => {
  const [state, dispatch] = useReducer(reducer, {