json_object_lite allows dot notation access to JSON.parse'd objects, for Dart, lite version.
This package is a re-implementation of the json_object package by Chris Buckett except it doesn't use mirrors and hence is a much lighter version. You of course lose the JSON serialization/deserialization of the original package, however there are more advanced packages you can use for this purpose, e.g dson.
Other than that this is a faithful, lighter, re-implementation intended as a drop in replacement for the original JsonObject. Please see the json_object documentation for further details.
Note that for compatibility with Dart 2.0 only construction from strings is now supported, there are also a few other more minor updates, see the example for more details.