function parsePhoneNumber(value, metadata) {
	return parsePhoneNumber_(value || '', metadata)
}
Parses a E.164 phone number to an instance of `PhoneNumber` class.
@param {string?} value = E.164 phone number.
@param  {object} metadata - `libphonenumber-js` metadata
@return {object} Object having shape `{ country: string?, countryCallingCode: string, number: string }`. `PhoneNumber`: https://gitlab.com/catamphetamine/libphonenumber-js#phonenumber.
@example
parsePhoneNumber('+78005553535')