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function validatePhoneNumber(phoneNumber: string): void;
- Starts with +
- Followed by country code (1-3 digits)
- Followed by subscriber number
- Total length: 1-15 digits (excluding the + prefix)
Parameters
| Parameter | Type | Description |
|---|
phoneNumber | string | The phone number to validate. |
Returns
void
Throws
Error if the phone number is not in valid E.164 format.
Example
// Valid formats
validatePhoneNumber("+14155552671"); // US
validatePhoneNumber("+442071838750"); // UK
validatePhoneNumber("+81312345678"); // Japan
// Invalid formats (will throw)
validatePhoneNumber("4155552671"); // Missing +
validatePhoneNumber("+1-415-555-2671"); // Contains hyphens
validatePhoneNumber("+0412345678"); // Starts with 0
