phone static method

String? phone(
  1. String? value
)

Validate phone number

Implementation

static String? phone(String? value) {
  if (value == null || value.isEmpty) {
    return 'Phone number is required';
  }

  if (!RegexPatterns.phone.hasMatch(value)) {
    return 'Please enter a valid phone number';
  }

  return null;
}