first mockup in go

static/bower_components/bootstrap/grunt/bs-commonjs-generator.js

@@ -0,0 +1,30 @@
+/*!
+ * Bootstrap Grunt task for the CommonJS module generation
+ * https://getbootstrap.com/
+ * Copyright 2014-2019 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ */
+
+'use strict';
+
+var fs = require('fs');
+var path = require('path');
+
+var COMMONJS_BANNER = '// This file is autogenerated via the `commonjs` Grunt task. You can require() this file in a CommonJS environment.\n';
+
+module.exports = function generateCommonJSModule(grunt, srcFiles, destFilepath) {
+  var destDir = path.dirname(destFilepath);
+
+  function srcPathToDestRequire(srcFilepath) {
+    var requirePath = path.posix.relative(destDir, srcFilepath);
+    return 'require(\'' + requirePath + '\')';
+  }
+
+  var moduleOutputJs = COMMONJS_BANNER + srcFiles.map(srcPathToDestRequire).join('\n');
+  try {
+    fs.writeFileSync(destFilepath, moduleOutputJs);
+  } catch (err) {
+    grunt.fail.warn(err);
+  }
+  grunt.log.writeln('File ' + destFilepath.cyan + ' created.');
+};