/**
 * Gets the country code from a country:state value string.
 *
 * @format
 * @param {string} countryState Country state string, e.g. US:GA.
 * @return {string} Country string.
 */

export function getCountryCode( countryState ) {
	if ( ! countryState ) {
		return null;
	}

	return countryState.split( ':' )[ 0 ];
}