[Bug] Why is there no JavaScript ?

self["MonacoEnvironment"] = function(paths) {
    function stripTrailingSlash(str) {
        return str.replace(/\/$/, '');
    }

    return {
        globalAPI: false,
        getWorkerUrl: function(moduleId, label) {
            var pathPrefix = true ? __webpack_require__.p : 0;
            var result = (pathPrefix ? stripTrailingSlash(pathPrefix) + '/' : '') + paths[label];

            if (/^((http:)|(https:)|(file:)|(\/\/))/.test(result)) {
                var currentUrl = String(window.location);
                var currentOrigin = currentUrl.substr(0, currentUrl.length - window.location.hash.length - window.location.search.length - window.location.pathname.length);

                if (result.substring(0, currentOrigin.length) !== currentOrigin) {
                    if (/^(\/\/)/.test(result)) {
                        result = window.location.protocol + result;
                    }

                    var js = '/*' + label + '*/importScripts("' + result + '");';
                    var blob = new Blob([js],{
                        type: 'application/javascript'
                    });
                    return URL.createObjectURL(blob);
                }
            }

            return result;
        }
    };
}({
    "editorWorkerService": "editor.worker.js",
    "css": "css.worker.js",
    "html": "html.worker.js",
    "json": "json.worker.js",
    "less": "css.worker.js",
    "scss": "css.worker.js",
    "handlebars": "html.worker.js",
    "razor": "html.worker.js"
});

Start by reproducing the reported setup and tracing the shown MonacoEnvironment worker configuration, especially the editor.worker.js and language worker paths. The issue names no source file, failing test, or expected behavior, so first establish what “no JavaScript” refers to; done requires a confirmed cause and a fix or reproducible explanation.