schon/storefront/composables/rules/useFormValidation.ts

export function useValidators() {
  const { t } = useI18n()

  const required = (text: string) => {
    if (text) return true
    return t('errors.required')
  }

  const isEmail = (email: string) => {
    if (!email) return required(email)
    if (/.+@.+\..+/.test(email)) return true
    return t('errors.mail')
  }

  const isPasswordValid = (pass: string) => {
    if (pass.length < 8) {
      return t('errors.needMin')
    }

    if (!/[a-z]/.test(pass)) {
      return t('errors.needLower')
    }

    if (!/[A-Z]/.test(pass)) {
      return t('errors.needUpper')
    }

    if (!/\d/.test(pass)) {
      return t('errors.needNumber')
    }

    if (!/[#.?!@$%^&*'()_+=:;"'/>.<,|\-]/.test(pass)) {
      return t('errors.needSpecial')
    }

    return true
  }

  return {
    required,
    isEmail,
    isPasswordValid
  }
}