auth.js

export function login (form) {
  return async dispatch => {
    dispatch({ type: AUTH_USER_STARTED })
    try {
      const res = await auth(form)
      if (res && res.token) {
        setToken(res.token)
        return dispatch({
          type: AUTH_USER_COMPLETED,
          token: res.token
        })
      } else throw new Error('no token')
    } catch (err) {
      return dispatch({
        type: AUTH_USER_FAILED,
        errors: err.message
      })
    }
  }
}