Thanks, but it seems there have been some changes in gulp 4 and it doesn't build. Also webpack-dev-server 3 has a peer dependency on webpack 4 so I'm not sure it'll work without updating that too.
Another thing: maybe it would be good to run "npm run dev" on Travis CI. This way, I would have noticed it myself. I was too confident that it would work ;)
Thanks, but it seems there have been some changes in gulp 4 and it doesn't build. Also webpack-dev-server 3 has a peer dependency on webpack 4 so I'm not sure it'll work without updating that too.