VSCode Debugger Uncaught Exceptions gets swallowed about webpack-hot-server-middleware

[richardscarrott]

Sounds like this is the same issue as #62 .

I just use chrome dev tools to debug so haven't run into this problem myself. It looks like vscode needs to know where the transpiled code is output however webpack-dev-middleware (and in turn webpack-hot-server-middleware) uses an in-memory file system.

It might be worth disabling the memory fs (you'd need to comment out this line in webpack-dev-middleware for now https://github.com/webpack/webpack-dev-middleware/blob/878aecd709b161a6cbbbd6e15dd14ba105b1e194/index.js#L62) and then perhaps point the vscode launch.js outFile to the webpack dist dir -- having said that, I'm sure there are other pieces to the puzzle I'm not familiar with though so needs further investigation.

[Aetherall]

I configure webpack to write file on disk, so this is not the issue
The problem comes from requireFromString(buildedFile) to be call inside a webpack hook
webpack handle the error internally so we don't jump to where it comes from

[Aetherall]

This is problematic scince react ssr errors gets swallowed too
Is there something to do about that ? This package is great, but makes error hunting so hard ...

[Aetherall]

a workaround is to add

process.on('unhandledRejection', e => {
	console.log(e)
})

but It will not bring the vscodeDebugger, just print the error in the console

[richardscarrott]

@Aetherall Are you sure unhandled promise rejections behave differently in webpack-hot-server-middleware vs node require as I can see the warning fine in my tests, perhaps another package in your project is suppressing them by listening to 'unhandledRejection' and forgetting to log them?

[Aetherall]

I will provide a demo repo soon
I seems like it's the webpack plugin which is swallowing the error
Maybe we can hook the root middleware to a static reference, or maybe the only solution is to update the whole root express app... IDK yet

EDIT: I also want to say that I did my experiment with a clean repo and no other packages than the ones concerned