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fix: don't panic on unknown command with single arg - #5
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Co-authored-by: Aaron Brewbaker <abrewbaker@nhl.com>
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Problem
When
observeis invoked with a single unknown argument (e.g.observe foobar), the binary panics with an index out-of-bounds error instead of printing a helpful error message and exiting cleanly.Fix
Check the length of
os.Argsbefore indexing into it in the command dispatch logic. Return a user-friendly error message instead of panicking.Testing
observe unknowncmd— now prints an error and exits non-zero instead of panickingobservewith no args — behaviour unchanged