Is this in a state where it can be published to the extensions marketplace?

[cowboy]

I haven't tried your extension, but I want to preview my YAML files as JSON. Have you considered publishing this? You could use https://github.com/marketplace/actions/publish-vs-code-extension

[nicofff]

Hey, thanks for the interest in this.
If you are like me, you are interested in this to figure out how whitespaces and "-"'s in yaml translate to objects / arrays.
After building this I discovered that the YAML extension already kinda does that by adding an outline at the top of the document with the structure of where your cursor is.

That covers what I was interested in with this extension, so I don't have plans to do anything else with it.
If that doesn't help, you can always sideload it.