TIC-80-guile/book.json

{
    "plugins": [ "theme-api" ],
    "pluginsConfig": {
        "theme-api": {
            "languages": [
                {
                    "lang": "js",
                    "name": "JavaScript",
                    "default": true
                },
                {
                    "lang": "go",
                    "name": "Go"
                }
            ]
        }
    }
}