message: added le comments
diff: @@ -184,6 +184,8 @@ export function generatePackageJson(
  `Manually update main in your bower.json or package.json to fix.`);
  }
  } else {
  + // Certain polymer repos have an existing package.json with its main set to
  + // an HTML file.
  packageJson.main = replaceHtmlExtensionIfFound(packageJson.main);
  }
  