key method
When passed a number index
, returns the name of the nth key in a given Storage object.
The order of keys is user-agent defined, so you should not rely on it.
Implementation
Future<String> key({required int index}) async {
var result = await _controller.evaluateJavascript(source: """
window.$webStorageType.key($index);
""");
return result != null ? json.decode(result) : null;
}