--inspect[=[host:]port]

[Guid75]

Hi,

Wondering why vitest does not allow to pass host and port to --inspect and --inspect-brk flags like nodejs does.

My process is running on a docker container and I need to pass "0.0.0.0" instead to "127.0.0.1" in order to access it from my debugger.

[AriPerkkio]

Vitest uses node:inspector APIs to set up debugger.

vitest/packages/vitest/src/runtime/inspector.ts

Lines 8 to 21 in 0c13c39

	/**
	* Enables debugging inside `worker_threads` and `child_process`.
	* Should be called as early as possible when worker/process has been set up.
	*/
	export function setupInspect(config: ResolvedConfig) {
	const isEnabled = config.inspect || config.inspectBrk
	if (isEnabled) {
	inspector = __require('node:inspector')
	// Inspector may be open already if "isolate: false" is used
	const isOpen = inspector.url() !== undefined
	if (!isOpen) {
	inspector.open()

Currently --inspect and --inspect-brk are boolean flags. I think your use case would be covered if it allowed URL as argument as well. That could be passed to inspect.open() as argument. https://nodejs.org/dist/latest-v18.x/docs/api/inspector.html#inspectoropenport-host-wait

[jhawson-lmi]

I have the same situation as @Guid75; my test process runs in a docker container. It would be incredibly helpful to be able to debug it in that environment.

As @AriPerkkio pointed out, the node inspector.open() method provides the necessary flexibility. Specifically, it accepts port and host arguments:

inspector.open([port[, host[, wait]]])

These arguments determine the port and host to which the inspector will bind. By default, the host is localhost, which makes sense for most local development scenarios. But in a container, that makes it difficult to expose the port for incoming connections (requires host networking mode, or the use of tools like socat to port-forward; these are not great options).

With these arguments, vitest could implement the same command-line syntax as node itself.

[AriPerkkio]

There's now feature request for this at #5500.