Yup: deep validation in array of objects

I solved it using compact() (filtering out falsely values) together with setTimeout after the FieldArray modifier function:

const validationSchema = Yup.object().shape({
  subject: Yup.string().required(i18n.t('required-field')),
  description: Yup.string(),
  daysOfWeek: Yup.array()
    .of(
      Yup.object().shape({
        dayOfWeek: Yup.string(),
        checked: Yup.boolean(),
      })
    )
    .compact((v) => !v.checked)
    .required(i18n.t('required-field')),
  taskSchedules: Yup.array(),
});

And in form:

<Checkbox
  value={day.dayOfWeek}
  checked={day.checked}
  onChange={(e) => {
    replace(idx, { ...day, checked: !day.checked });
    setTimeout(() => {
      validateForm();
    });
  }}
/>;