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* Centralized Regular Expression Library
*
* This file contains validation regex patterns actively used across the application.
* Centralizing these patterns ensures consistency, maintainability, and reusability.
*
* @module validation/regex
*/
// ============================================================================
// ZIP / POSTAL CODE PATTERNS
// ============================================================================
/**
* US ZIP code validation pattern
* Matches 5-digit ZIP codes or ZIP+4 format (with optional hyphen or space)
*
* @example "12345" ✓
* @example "12345-6789" ✓
* @example "12345 6789" ✓
* @example "1234" ✗
*/
export const US_ZIP_REGEX = /^[0-9]{5}(?:[-\s]?[0-9]{4})?$/;
/**
* International (non-US) ZIP/Postal code validation pattern
* Supports various international postal code formats including alphanumeric characters
*
* @example "M5H 2N2" ✓ (Canada)
* @example "SW1A 1AA" ✓ (UK)
* @example "75008" ✓ (France)
* @example "100-0001" ✓ (Japan)
*/
export const INTERNATIONAL_ZIP_REGEX = /^[a-zA-Z0-9 .,\-[\]]{3,10}$/;
/**
* @deprecated Use US_ZIP_REGEX instead
* Legacy export for backward compatibility
*/
export const zipRegex = US_ZIP_REGEX;
/**
* Per-country postal code regex map.
* Keys are ISO 3166-1 alpha-2 country codes (uppercase).
*
* To add a new country, add a single entry here — `buildZipSchema` picks it up automatically.
*
* @example CA: "A1A 1A1" or "A1A1A1"
* @example GB: "SW1A 1AA", "M1 1AA", "EC1A 1BB"
* @example DE/FR/ES: "75008", "10115", "28001"
*/
export const POSTAL_REGEX_BY_COUNTRY: Record<string, RegExp> = {
/** United States: 12345 or 12345-6789 */
US: US_ZIP_REGEX,
/** Canada: A1A 1A1 or A1A1A1 */
CA: /^[A-Za-z]\d[A-Za-z][ -]?\d[A-Za-z]\d$/,
/** United Kingdom: M1 1AA, SW1A 1AA, EC1A 1BB, etc. */
GB: /^[A-Za-z]{1,2}\d[A-Za-z\d]?[ ]?\d[A-Za-z]{2}$/,
/** Germany: 5-digit numeric (01067–99998) */
DE: /^\d{5}$/,
/** France: 5-digit numeric (01000–98799) */
FR: /^\d{5}$/,
/** Spain: 5-digit numeric (01000–52999) */
ES: /^\d{5}$/,
};
/**
* Returns the postal code regex for a given ISO 3166-1 alpha-2 country code,
* or `null` if no country-specific pattern is registered.
* Unrecognised countries fall back to `INTERNATIONAL_ZIP_REGEX`.
*/
export const getPostalRegexForCountry = (country: string): RegExp | null =>
POSTAL_REGEX_BY_COUNTRY[country?.toUpperCase()] ?? null;
// ============================================================================
// EMAIL PATTERNS
// ============================================================================
/**
* Email address validation pattern (RFC 5322 compliant)
* Validates standard email addresses with common special characters
*
* @example "user@example.com" ✓
* @example "first.last+tag@example.co.uk" ✓
* @example "invalid@" ✗
* @example "@invalid.com" ✗
*/
export const EMAIL_REGEX =
/^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/;
/**
* @deprecated Use EMAIL_REGEX instead
* Legacy export for backward compatibility
*/
export const isValidEmailRegex = EMAIL_REGEX;
// ============================================================================
// NAME PATTERNS
// ============================================================================
/**
* Personal name validation pattern
* Allows letters (including international characters), hyphens, apostrophes, spaces, and common punctuation
*
* @example "John Smith" ✓
* @example "Mary-Jane O'Connor" ✓
* @example "José García" ✓
* @example "Anne-Marie Müller" ✓
* @example "John123" ✗
*/
export const NAME_REGEX = /^[a-zA-ZÀ-ÖØ-öø-ÿĀ-žŽ-žßÐđŁłŒœÆæ'''`´\-–—.,\s]+$/;
/**
* @deprecated Use NAME_REGEX instead
* Legacy export for backward compatibility
*/
export const nameValidationRegex = NAME_REGEX;
/**
* Business/Merchant name format validation
* Ensures name contains alphanumeric characters and common business punctuation
* Used in enterprise info, merchant info, and settings
*
* @example "ABC Corp." ✓
* @example "Joe's Pizza" ✓
* @example "Store #123" ✗
*/
export const BUSINESS_NAME_FORMAT_REGEX = /^[a-zA-Z0-9,.'\s]+$/;
/**
* Business name minimum letters requirement
* Ensures at least 3 alphabetic characters are present
*
* @example "ABC" ✓
* @example "A1B2C3" ✓
* @example "123" ✗
*/
export const BUSINESS_NAME_MIN_LETTERS_REGEX = /^(?=(.*[a-zA-Z]){3}).*$/;
// ============================================================================
// URL PATTERNS
// ============================================================================
/**
* URL validation pattern (comprehensive)
* Supports HTTP(S), FTP protocols, IPv4, domains, paths, query strings, and fragments
* Includes international domain names (IDN) support
*
* @example "https://example.com" ✓
* @example "http://subdomain.example.co.uk/path?query=1#fragment" ✓
* @example "ftp://192.168.1.1:8080" ✓
* @example "not-a-url" ✗
*/
export const URL_REGEX =
/^((https?|ftp):)?\/\/(([a-z\d\-._~\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF%!$&'()*+,;=:]+)@)?(((\d{1,3}\.){3}\d{1,3})|\[(\d{1,3}\.){3}\d{1,3}\]|([a-z\d\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+(-[a-z\d\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+)*\.)+[a-z\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]{2,})(:\d{2,5})?(\/[a-z\d\-._~%!$&'()*+,;=:@\/]*)?(\?[a-z\d\-._~%!$&'()*+,;=:@\/?]*)?(#[a-z\d\-._~%!$&'()*+,;=:@\/?]*)?$/i;
/**
* @deprecated Use URL_REGEX instead
* Legacy export for backward compatibility
*/
export const urlValidationRegex = URL_REGEX;
/**
* URL without protocol validation
* Ensures URL does not start with https://
* Used in onboarding business details
*
* @example "example.com" ✓
* @example "www.example.com" ✓
* @example "https://example.com" ✗
*/
export const URL_WITHOUT_PROTOCOL_REGEX = /^(?!https:\/\/).*$/;
// ============================================================================
// BANKING PATTERNS
// ============================================================================
/**
* Bank account number validation pattern
* Validates US bank account numbers (6-17 digits)
*
* @example "123456" ✓
* @example "12345678901234567" ✓
* @example "12345" ✗
*/
export const BANK_ACCOUNT_NUMBER_REGEX = /^[0-9]{6,17}$/;
/**
* Bank routing number validation pattern
* Validates US bank routing numbers (9 digits)
* Used in bank account creation and onboarding
*
* @example "123456789" ✓
* @example "12345678" ✗
*/
export const ROUTING_NUMBER_REGEX = /^[0-9]{9}$/;
// ============================================================================
// ADDRESS PATTERNS
// ============================================================================
/**
* Country code validation (ISO format, starts with uppercase letter)
* Used in address schemas and business owner validation
*
* @example "US" ✓
* @example "CA" ✓
* @example "us" ✗
*/
export const COUNTRY_CODE_REGEX = /^[A-Z].+$/;
/**
* State/Province validation (letters and spaces only)
* Used in address and customer forms
*
* @example "California" ✓
* @example "New York" ✓
* @example "CA123" ✗
*/
export const STATE_REGEX = /^[a-zA-Z\s]*$/;
/**
* Alphabetic text validation (letters and spaces only)
* Used for text fields like occupation, employer, job titles
* More semantically appropriate than STATE_REGEX for non-address fields
*
* @example "Software Engineer" ✓
* @example "Google Inc" ✓
* @example "123 Corp" ✗
*/
export const TEXT_ALPHABETIC_REGEX = /^[a-zA-Z\s]*$/;
// ============================================================================
// PASSWORD VALIDATION PATTERNS
// ============================================================================
/**
* Password contains at least one number
* Used in password strength validation
*
* @example "password123" ✓
* @example "password" ✗
*/
export const PASSWORD_HAS_NUMBER_REGEX = /[0-9]/;
/**
* Password contains at least one lowercase letter
* Used in password strength validation
*
* @example "Password123" ✓
* @example "PASSWORD123" ✗
*/
export const PASSWORD_HAS_LOWERCASE_REGEX = /[a-z]/;
/**
* Password contains at least one uppercase letter
* Used in password strength validation
*
* @example "Password123" ✓
* @example "password123" ✗
*/
export const PASSWORD_HAS_UPPERCASE_REGEX = /[A-Z]/;
/**
* Password contains at least one special character
* Includes: ! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \ ] ^ _ ` { | } ~
* Used in password strength validation
*
* @example "Password123!" ✓
* @example "Password123" ✗
*/
export const PASSWORD_HAS_SPECIAL_CHAR_REGEX = /[!-/:-@[-`{-~]/;
// ============================================================================
// INPUT SANITIZATION PATTERNS
// ============================================================================
/**
* Name input sanitization (default)
* Removes special characters, digits, and leading/trailing spaces
* Used in NameInput component for personal names
*
* @example Removes: ~`!@#$%^*&()_={}[]:;,.<>+?- and digits
*/
export const NAME_INPUT_SANITIZE_DEFAULT_REGEX =
/[~`!@#$%^*&()_={}[\]:;,.<>+?-]+|\d+|^\s+$/g;
/**
* Legal name input sanitization
* Removes special characters and leading/trailing spaces (allows digits)
* Used in legal name fields
*
* @example Removes: ~`!@#$%^*&()_={}[]:;<>+?-
*/
export const NAME_INPUT_SANITIZE_LEGAL_REGEX =
/[~`!@#$%^*&()_={}[\]:;<>+?-]+|^\s+$/g;
/**
* Merchant name input sanitization
* Only allows alphanumeric, comma, period, apostrophe, and space
* Used in merchant name fields
*
* @example Allows: a-z A-Z 0-9 , . ' space
*/
export const MERCHANT_NAME_SANITIZE_REGEX = /[^a-zA-Z0-9,.' ]/g;
// ============================================================================
// DOCUMENT IDENTIFICATION PATTERNS
// ============================================================================
/**
* Passport ID validation
* Alphanumeric, 6-9 characters
* Used in identity verification forms
*
* @example "AB123456" ✓
* @example "12345" ✗ (too short)
*/
export const PASSPORT_ID_REGEX = /^[A-Za-z0-9]{6,9}$/;
/**
* National ID validation
* Alphanumeric, 5-15 characters
* Used in identity verification forms
*
* @example "A12345678" ✓
* @example "1234" ✗ (too short)
*/
export const NATIONAL_ID_REGEX = /^[A-Za-z0-9]{5,15}$/;
// ============================================================================
// TIME AND DATE PATTERNS
// ============================================================================
/**
* 12-hour time format validation (HH:MM AM/PM)
* Used in event/sweepstake time validation
*
* @example "09:30 AM" ✓
* @example "12:00 PM" ✓
* @example "13:00 PM" ✗
*/
export const TIME_12HR_FORMAT_REGEX = /^(0[1-9]|1[0-2]):[0-5][0-9] (AM|PM)$/;
// ============================================================================
// NUMERIC VALIDATION PATTERNS
// ============================================================================
/**
* Digits only validation
* Matches one or more digits
*
* @example "123" ✓
* @example "12a" ✗
*/
export const DIGITS_ONLY_REGEX = /^\d+$/;
/**
* Integer validation (with optional negative sign)
* Used for integer input fields
*
* @example "123" ✓
* @example "-456" ✓
* @example "12.5" ✗
*/
export const INTEGER_REGEX = /^-?[0-9]+$/;
/**
* Optional digits validation
* Allows empty string or digits
*
* @example "" ✓
* @example "123" ✓
* @example "12a" ✗
*/
export const OPTIONAL_DIGITS_REGEX = /^\d*$/;
// ============================================================================
// COLOR PATTERNS
// ============================================================================
/**
* Hexadecimal color code validation
* Supports 3 or 6 character hex codes with optional # prefix
* Used in theme/branding color inputs
*
* @example "#FF0000" ✓
* @example "#F00" ✓
* @example "FF0000" ✓
* @example "#GG0000" ✗
*/
export const HEX_COLOR_REGEX = /^#?([0-9A-F]{3}|[0-9A-F]{6})$/i;
// ============================================================================
// BUSINESS VALIDATION PATTERNS
// ============================================================================
/**
* DBA (Doing Business As) name length validation
* Ensures business name is between 3 and 21 characters
* Used in merchant info forms
*
* @example "ABC" ✓ (3 chars)
* @example "My Business Name LLC" ✓ (21 chars)
* @example "AB" ✗ (too short)
*/
export const DBA_LENGTH_REGEX = /^.{3,21}$/;
// ============================================================================
// HELPER FUNCTIONS
// ============================================================================
/**
* Test if a string is a valid email address
* @param value - String to test
* @returns true if valid email
*/
export const isValidEmail = (value: string): boolean => {
return EMAIL_REGEX.test(value);
};
/**
* Test if a string is a valid hex color code
* @param value - String to test
* @returns true if valid hex color
*/
export const isValidHexColor = (value: string): boolean => {
return HEX_COLOR_REGEX.test(value);
};
/**
* Test if a string contains only optional digits (empty string or digits only)
* @param value - String to test
* @returns true if value is empty or contains only digits
* @example
* isValidNumberValue("123") // true
* isValidNumberValue("") // true
* isValidNumberValue("12a3") // false
*/
export const isValidNumberValue = (value: string): boolean => {
return OPTIONAL_DIGITS_REGEX.test(value);
};
export const CITY_MAX_LENGTH = 20;
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