fix(json-generator): fileCounts not getting emitted into json

[ProjectBarks]

Background

According to this report #72 fileCounts was not getting outputted into the JSON type due to the input type to the serializer being JSON. The reasoning for this Maps in javascript when serialized through JSON.stringify are converted into {}.

Solution

Run JSON.fromEntries on fileCounts before serializing. Also, added a unit test to ensure the output works and prevent future regressions.

[alexcanessa]

Amazing @ProjectBarks, thanks so much :)

[alexcanessa]

@all-contributors add @ProjectBarks for code

[allcontributors]

@alexcanessa

I've put up a pull request to add @ProjectBarks! 🎉

[alexcanessa]

@ProjectBarks this has been published with 1.0.0.