ServiceWorker doesn't work

[mysticatea]

• I confirm that this is a issue rather than a question.

Bug report

Version

• vuepress 1.0.0-alpha.37
• @vuepress/plugin-pwa 1.0.0-alpha.0

Steps to reproduce

1. Open https://mysticatea.github.io/eslint-plugin-eslint-comments/
2. Open devtools' console
3. You can find the following error message.

The path of the provided scope ('/') is not under the max scope allowed ('/eslint-plugin-eslint-comments/'). Adjust the scope, move the Service Worker script, or use the Service-Worker-Allowed HTTP header to allow the scope.

• Site: https://mysticatea.github.io/eslint-plugin-eslint-comments/
• Config: https://github.com/mysticatea/eslint-plugin-eslint-comments/blob/5189c013eb4b75f01fc39778e77450e09f00e32a/docs/.vuepress/config.js
• Repository: https://github.com/mysticatea/eslint-plugin-eslint-comments
  • npm run docs:build is the command to build with vuepress.
• Build job: https://travis-ci.org/mysticatea/eslint-plugin-eslint-comments/jobs/491085834

What is expected?

• The site uses service worker.

What is actually happening?

• The site fails to register service worker.

Other relevant information

• Your OS: Travis CI's Linux container (Ubuntu 14.04.5 LTS)
• Node.js version: 10.15.1
• Browser version: Chrome 73.0.3683.27（Official Build）beta
• Is this a global or local install? : local
• Which package manager did you use for the install? : yarn

---

I guess that registrationOptions is lacking on @vuepress/plugin-pwa/lib/enhanceAppFile.js.

[ulivz]

Could you help to review #1302