envoc-form/src/Normalization/normalizers.ts

Envoc form components

/** Normalizer for converting a string into a valid phone number. */
export const phoneNumber = (value: string | undefined | null) => {
  if (!value) {
    return undefined;
  }

  const onlyNums = value.replace(/[^\d]/g, '');
  if (onlyNums.length <= 3) {
    return onlyNums;
  }
  if (onlyNums.length <= 7) {
    return `${onlyNums.slice(0, 3)}-${onlyNums.slice(3)}`;
  }
  if (onlyNums.length <= 10) {
    return `${onlyNums.slice(0, 3)}-${onlyNums.slice(3, 6)}-${onlyNums.slice(
      6,
      10
    )}`;
  }
  if (onlyNums.length <= 13) {
    const countryCodeLength = onlyNums.length - 10;
    return `+${onlyNums.slice(0, countryCodeLength)} ${onlyNums.slice(
      countryCodeLength,
      3 + countryCodeLength
    )}-${onlyNums.slice(
      3 + countryCodeLength,
      6 + countryCodeLength
    )}-${onlyNums.slice(6 + countryCodeLength, onlyNums.length)}`;
  }

  return onlyNums;
};

/** Normalizer for converting a string into a valid zip code. Allows for XXXXX and XXXXX-XXXX format. */
export const zipCode = (value: string | undefined | null) => {
  if (!value) {
    return undefined;
  }
  const onlyNums = value.replace(/[^\d]/g, '');
  if (onlyNums.length > 5) {
    return onlyNums.substring(0, 5) + '-' + onlyNums.substring(5, 9);
  }
  return onlyNums;
};