Adding setup option for pre-configuring app middleware.

[gmac]

By passing a setup function as a server option, one can pre-configure app middleware before webpack-dev-middleware is installed. This is useful for installing pre-webpack middleware that inspects an incoming request and makes adjustments to the Webpack server if needed.

[heebtob]

I would love to see this feature. In my case I would like to use the passport middleware for authentication.
👍

[danistefanovic]

+1

[mathieumg]

+1 👍 A way to do the same post-setup could come in handy as well, I imagine.

[mehwww]

+1

[jnv]

👍

Or perhaps you could have a middleware option similar to browserSync, although this is feasible with this solution.