retropilot-client/src/context/users/reducer.js

export const reducer = (state, action) => {
  switch (action.type) {
    case "sign_out":

      return {
        ...state,
        active: !state.active
      }

    default:
      return state
  }
}

export const initialState = {
  signedIn: false,
  user: {
    id: null,
    username: null,
    JWT: null,
  },
}