Template require is not reloaded in watch mode

[ggrossetie]

Discussed in #484

^{Originally posted by wh81752 May 11, 2021}
I use options -w (watch) and --preview as shown below:

$ asciidoctor-web-pdf -w --preview --template-require ./doc.js doc.adoc
Watch mode entered, needs to be manually terminated using Ctrl+C!

Now, when I change doc.adoc then my changes are reflected in Chromium opened by --preview. That is expected.

However, my (structural) changes to doc.js are not taken into account. So whenever I change doc.js I need to terminate process above and restart again.

Is that expected behaviour or do I miss something?