fix(lib): DEP0044 in TerraformOutput

[gabegorelick]

Don't use deprecated util.isArray.

Closes #3860

Related issue

Fixes #3860

Description

util.isArray is deprecated in favor of Array.isArray.

Checklist

• I have updated the PR title to match CDKTF's style guide
• I have run the linter on my code locally
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation if applicable
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works if applicable
• New and existing unit tests pass locally with my changes

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[mutahhir]

Thank you!

[mutahhir]

@gabegorelick can you confirm if you've signed the CLA? The bot above is being ambiguous.

[gabegorelick]

can you confirm if you've signed the CLA?

I can confirm that I've signed the CLA.

[gabegorelick]

Is there anything I can do to help get this merged? This deprecation warning is quite annoying.

[willgriffin]

should this be checking to see whether it should use the old or new ?

[gabegorelick]

should this be checking to see whether it should use the old or new ?

No. There are already dozens of unconditional uses of Array.isArray in this repo. Array.isArray has been supported since at least Node 0.10. It is ancient at this point. There is no reason to use util.isArray, which is why its use is deprecated. I am sure that Terraform does not support running on any platforms without Array.isArray.

[gabegorelick]

The inability to get this simple fixed merged is quite depressing. It makes me question the health of terraform-cdk going forward.

[pauldraper]

The inability to get this simple fixed merged is quite depressing. It makes me question the health of terraform-cdk going forward.

Thanks for your efforts 🫡