def js_bundle(self):
        """The relative path to the JS bundle file."""
        js_bundle = self._metadata.get("js_bundle", None)

        if not js_bundle and self.has_package_json:
            pkg = etas.read_json(self.package_json_path)
            js_bundle = pkg.get("fiftyone", {}).get("script", None)

        if not js_bundle:
            js_bundle = "dist/index.umd.js"

        return js_bundle
The relative path to the JS bundle file.
fiftyone/plugins/definitions.py