optipng causes entire plugin to fail silently

[psabharwal123]

passing any value for optipng causes entire plugin to fail silently and none of the files are compressed. it would be good to add some tests to this project.

[Klathmon]

I'd gladly accept a PR with tests!

But I can't reproduce the optipng issues. Can you post a config?

FYI: I live in florida and am preparing for a hurricane, so I most likely won't be around to work on this project for the next week or so, possibly longer.

[psabharwal123]

Thanks, np, I ll post it shortly. I ran it a few times and it seems some of the images are being optimized (sometimes none of them). Should it use webpack to emit the files instead of writing them directly?