if .markdownlint.yaml is empty, markdown lint crashes with Error: Unable to parse '.markdownlint.yaml'; Parser 0: Unable to parse JSONC content, ValueExpected (offset 0, length 0)

[onerandomusername]

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[DavidAnson]

This is really interesting, thanks! When https://github.com/nodeca/js-yaml successfully parses an empty file (or one with only comments), it returns null. It's documented to do that and I see now that YAML documents could return a string or a number instead of an object - which I had not expected. I'll fix this soon, though it'll be a little bit before the fix makes it to a VS Code extension release.