selectors-after.js

const selectActivationStatus = createSelector(
  selectActivationInProgress,
  selectResendActivationInProgress,
  selectActivationError,
  selectResendActivationError,
  selectActivationSuccess,
  selectResendActivationSuccess,
  (
    activateInProgress,
    resendInProgress,
    activateError,
    resendError,
    activateSuccess,
    resendSuccess,
  ) => {
    switch (true) {
      case (resendInProgress || activateInProgress):
        return PENDING;
      case resendSuccess:
        return RESEND_SUCCESS;
      case activateSuccess:
        return SUCCESS;
      case resendError:
        return errorConstantToUserActivationStatus(resendError);
      case activateError:
        return errorConstantToUserActivationStatus(activateError);
      default:
        return;
    }
  },
);

selectors-before.js

const selectActivationStatus = createSelector(
  selectActivationInProgress,
  selectResendActivationInProgress,
  selectActivationError,
  selectResendActivationError,
  selectActivationSuccess,
  selectResendActivationSuccess,
  (
    activateInProgress,
    resendInProgress,
    activateError,
    resendError,
    activateSuccess,
    resendSuccess,
  ) => {
    if (resendInProgress || activateInProgress) return PENDING;
    if (resendSuccess) return RESEND_SUCCESS;
    if (activateSuccess) return SUCCESS;
    if (resendError) {
      return errorConstantToUserActivationStatus(resendError);
    }
    if (activateError) {
      return errorConstantToUserActivationStatus(activateError);
    }
    return undefined;
  },
);