Catch Type Errors with a Post-Tool-Use Hook
The queries project has a PostToolUse hook that runs an automated check after every file edit and reports back if the check fails. You ask Claude to change a function so it takes an extra required input. Claude updates the function, but another part of the project still calls it the old way, so the code no longer fits together.
What happens next?
This exercise is part of the course
Claude Code in Action
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