yup.ts

import { object as yupObject, string as yupString } from "yup";

// ...

validationSchema={yupObject().shape({
  email: yupString()
    .email(strings.invalidEmailFormat)
    .required(strings.emailRequired),
  password: yupString()
    .min(8, strings.passwordMinLength)
    .required(strings.passwordRequired)
})}