Impossible to identify features properties when parsing with GeoJSON after compileing

[szymonc]

After compiling my project together with OL the GeoJson parser, json properties are not identifiable.
For example, in the parser class you get object properties like this:
json.features
and probably it should be like this, to keep reference:
json["features"]
found here - ol.parser.GeoJSON.prototype.parseFeatureCollection_