Possibility that lerna run command fails if not all packages include the script

I have 5 packages & run the lerna run test:unit --stream command from root. If a package does not contain the test:unit script, the lerna output is still "lerna success" for 4 packages. So on CI it's not possible to detect that for one package the unit tests are not executed. Is there a good solution to handle this?

Expected Behavior

Add a flag so that the lerna command fails if not all packages include the executing script

Current Behavior

lerna command succeed

Possible Solution

Add a flag like --strict

Steps to Reproduce (for bugs)

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Context

Your Environment

Start by tracing the lerna run test:unit --stream command and how it determines success when a package lacks the script. Reproduce the five-package scenario described in the issue, then define the flag behavior so the command fails when any selected package does not execute the script and succeeds when all do.