javasctipt_in_2018.js

const signUpRequest: Function = (): { type: string } => ({
  type: actionTypes.SIGN_UP_REQUEST
})

const signUpSuccess: Function = ({ data }: { data: Object }): { type: string, payload: { data: Object } } => ({
  type: actionTypes.SIGN_UP_SUCCESS,
  payload: { data }
})

const signUpFailure: Function = ({ error }: { error: Object }): { type: string, payload: { error: Object } } => ({
  type: actionTypes.SIGN_UP_FAILURE,
  payload: { error }
})

export const signUp: Function = ({ username, password, email, phone }: { username: string, password: string, email: string, phone: string }): Function => async (dispatch: Function): Promise<void> => {
  dispatch(signUpRequest())

  try {
    const data = await Auth.signUp(username, password, email, phone)
    dispatch(signUpSuccess({ data }))
  } catch (error) {
    dispatch(signUpFailure({ error }))
  }
}