The plain-English version
A process result code that a calling shell or program can inspect.
Why it matters
It lets scripts distinguish success from failure without parsing human-oriented output.
Let’s make it click
A validation command returns a documented nonzero status when the input fails its checks.
Vibe Bro’s heads-up
Printing an error while exiting successfully can make an automated workflow continue with invalid output.
The docs behind it
Documentation links checked .
Editorial review · October 28, 2026
Supported: Node documents success code zero and explicit failure codes. The entry correctly keeps the status separate from human-readable diagnostics.