Function normalizeFieldKey

lib/stats/DefaultStatsFactoryPlugin.js:2542–2547

(field)

 * @returns {field} normalized field
 */
const normalizeFieldKey = (field) => {
	if (field[0] === "!") {
		return field.slice(1);
	}
	return field;
};

// if a field is prefixed by a "!" reverse sort order
/**