Exit status from shell scripts in npm run scripts on windows

I have a very simple shell script, test.sh

#!/usr/bin/env bash

exit 1

I'm calling this from my test run script in package.json

"scripts": {
  "test": "test.sh && echo \"unexpected output\""
},

Running npm test I get this:

$ npm test

> [email protected] test C:\Users\[path]\testtest
> test.sh && echo "unexpected output"

"unexpected output"

It seems as if npm doesn't care about the non-zero exit code of test.sh. I was not expecting to see "unexpected output".

How do I make the execution of the "test" command stop when one of the steps it performs (test.sh in this case) exits with an error?

With this in my package.json: "test": "test.sh && echo $?",
This is the output:

$ npm test

> [email protected] test C:\Users\[path]\testtest
> test.sh && echo $?

$?

With this: "test": "test.sh && echo \"$?\"",
I get this:

$ npm test

> [email protected] test C:\Users\[path]\testtest
> test.sh && echo "$?"

"$?"

As a sanity-check I added an echo after the exit in test.sh. Thankfully it doesn't print :)

#!/usr/bin/env bash

exit 1

echo "This should not print"

The "This should not print" text never shows up in my console.

Actually, adding an echo before exit 1 also doesn't print anything to my GitBash console. Instead it prints to a temporary cmd window that npm launches. So I'm guessing the exit status is lost inside that cmd session.