add delay option in case of longer builds

[marcelkalveram]

Ran into the same issue as #25 where the reload had to be delayed due to longer build times.

Unfortunately, this option won't get included in tiny-lr (see mklabs/tiny-lr#110) so I decided to add it here instead.

[statianzo]

Sounds good. Can you add documentation to the readme?

[marcelkalveram]

Yeah, sure. Will update the PR.

[marcelkalveram]

Updated.

[statianzo]

Thanks. Just to be clear, the delay isn't to account for webpack not being complete yet, correct? If livereload-plugin is firing before webpack is done, then there's a bug.

[marcelkalveram]

The delay is running after the done event has been fired by the compiler. So I'm pretty sure it runs when webpack has finished compiling.

I've tested it in my own app and was working reliably there. Feel free to test it out yourself.

Thanks!

[statianzo]

Sorry, I was unclear. Without this delay feature, livereload is being triggered before webpack has finished?

[marcelkalveram]

Oh, I see what you mean. I don't think there's a Webpack bug. Live reload fires the done event after it's finished compiling.

However there are cases (like mine) where we run a Middleman-based stack, and the underlying build tool has to copy the files to another directory. While or before that happens, Live Reload has already triggered a reload. However we need to add a tiny delay to accommodate for this extra delay caused by the custom build tool.

Does that make sense?

[statianzo]

Yes. Thanks for following up and explaining. Just wanted to be sure there wasn't a bug hidden in the plugin. I appreciate the contribution!