themeConfig.serviceWorker.updatePopup doesn't work

[ulivz]

Bug report

Though I have tested for #533 at pure environment by many times, but for now it truly doesn't work at production, which is a blocker of our next minor release.

Version

0.13.0 Pre-Release

Steps to reproduce

1. Create a new commit into master
2. Check out the website, you can find there is a new registered SW which is in waiting, but no any SW-update popup show up.

What is expected?

SW-update popup should be shown.

What is actually happening?

No popup was shown.

Other relevant information

• Your OS: OSX 10.12.6
• Node.js version: 9.4.0
• Browser version: Chrome 67.0.3396.99
• Is this a global or local install?
• Which package manager did you use for the install?

[ulivz]

This isn't a bug of default theme, but a common issue of pure wrapped theme like vuepress-theme-vue.

Transferred to vuepress-theme-vue instead.