form-validation.ts

const verifyPurchase = async (value: string, values: yup.TestContext<any>) => {
  try {
    await ticketApi.getPurchaseCode({ value: value });
    return true;
  } catch (e) {
    values.createError({ path: 'purchase_code' });
    return false;
  }
};

const debounceVerifyPurchase = debounce(verifyPurchase, 1500);

const schema = yup.object({
  purchase_code: yup
    .string()
    .required('Purchase code required')
    .test('verified', 'Code not verified', async (value, values) => {
    const verified = await debounceVerifyPurchase(value as string, values);
    return verified as boolean;
  }),
});