fromMap function
Implementation
JSONObject fromMap(Map<Object?, Object?> map) {
return JSONObject(map.map((rawKey, value) {
String key = rawKey as String;
if (value is Map<Object?, Object?>) {
return MapEntry(key, fromMap(value));
} else if (value is List<Object?>) {
return MapEntry(key, _fromList(value));
} else if (value is String) {
return MapEntry(key, JSONString(value));
} else if (value is double) {
return MapEntry(key, JSONNumber(value));
} else if (value is bool) {
return MapEntry(key, JSONBool(value));
} else if (value == null) {
return MapEntry(key, JSONNull());
} else {
throw Exception("Unexpected type ${value.runtimeType} in JSON map");
}
}));
}