hi, I found the sentence in README

when style loader is used with { options: { sourceMap: true } } option, the CSS modules will be generated as Blobs...

then I enabled the soruceMap option, see the page in the latest Chrome(70.0.3538.110) when developing.

and js seems executed before the css applied to the dom occasionally, for instance, the page I write used swiper plugin, which calculate the slideSize would get the wrong size occasionally
is it a chrome's bug? or the blob related problem?