Throws error when there is no hot client running

[agilgur5]

The specific error is:

Uncaught ReferenceError: __hotClientOptions__ is not defined

The error points to line 125, which assumes __hotClientOptions__ exists in the global scope.

Filed this issue at @G-Rath 's request from #5 (comment) . Due to this error, webpack-serve-overlay cannot run on all environments as it implicitly requires a hot client to exist and will error out the bundle otherwise.

Screenie of browser console just in case:

If needed, you can find a reproducible (but not minimal) case in my boilerplate files here by running npm run build:watch and opening index.html.

Didn't file a PR instead since I'm not sure how you'd want to handle this (there are many options).