new Gun({ file: './data.json' }); creates a folder instead of single JSON file

[Joncom]

This would appear to contradict the official documentation.

[davay42]

may be it's the dot at the start of the string?

[Choko256]

With Radisk enabled, the file parameter is the name of the folder (relative to the process.cwd()) where the data will be stored. I don't know why the docs are saying you can create a single file.

By the way, you can't specify an absolute path because the Gun stats module is creating a file named stats.<file> in the current working directory.