$int static method
Implementation
static int? $int(dynamic json, String key) {
final value = _getJsonValue(json, key);
if (value == null) return null;
if (value is int) return value;
if (value is String) {
final v = num.tryParse(value);
return v?.toInt();
}
if (value is double) return value.toInt();
return int.tryParse(value.toString());
}