With the same webpack.config.js, webpack-dev-server runs a compile once on boot, but my webpack-dev-middleware setup compiles twice immediately upon startup.
I've added some logging in chokidar to make sure that a file change isn't happening and it doesn't appear to be. Any ideas on how to tell what is triggering the second compile?
My logging for file watching was in the wrong place. It was actually file changes that I kick off right before starting the dev server. I'm not sure how to make it less sensitive, but that's a different issue.
For posterity, to add logging to find out what changed, I manually edited node_modules/watchpack/lib/watchpack.js and added a console.log(file) within the watcher.on("change"...