/**
 * @summary Email Regex Pattern
 * - Starts with any characters, but not an '@'.
 * - Must contain a single '@' afterwards.
 * - After the '@', there should be any characters, but not another '@'.
 * - Must end with a period followed by a top-level domain (like .com, .net)
 *   which is at least 2 characters long.
 */
export declare const EmailPattern: RegExp;
/**
 * E.164 Compliant Phone Number Regex Pattern
 * - Starts with a '+' sign.
 * - Followed by a digit between 1 and 9 (excluding 0).
 * - Followed by any number of digits (up to 14 total digits including the first one),
 *   making sure there are between 1 and 14 digits in total.
 * - Ensures the phone number adheres to the international E.164 standard, allowing
 *   for global dialing.
 */
export declare const E164CompliantPhoneNumber: RegExp;
/**
 * Standard U.S. Phone Number Regex Pattern
 * - Starts with a single digit.
 * - Followed by exactly 9 repetitions of any number of hyphens (or no hyphen) and a digit,
 *   ensuring there are exactly 10 digits in total.
 * - The phone number can include hyphens as separators but cannot start or end with them.
 * - This pattern is designed to match standard U.S. phone numbers, allowing optional hyphens
 *   between digits, while ensuring the number starts and ends with a digit.
 */
export declare const USPhoneNumberWithOptionalHyphens: RegExp;
/**
 * Combined Phone Number Regex Pattern
 * - Matches either an E.164 compliant international phone number or a standard U.S. phone number.
 * - Ensures the phone number does not start or end with hyphens in the U.S. format and adheres to international dialing standards in the E.164 format.
 */
export declare const CombinedPhoneNumberRegex: RegExp;
/**
 * @summary Default Required String Pattern
 * - Ensures that the string contains at least one non-whitespace character.
 * - Matches any combination of characters as long as at least one character is non-whitespace.
 * - Used to validate input fields where purely empty or whitespace-only strings are not allowed.
 */
export declare const DefaultRequiredStringPattern: RegExp;