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Build the Tool

Stop doing the check by hand. These exercises are about writing the thing that does it for you, forever — the highest-leverage move available and the one nobody teaches, because it looks hard to grade. It is not: a tool either processes its cases or it does not.

Build the tool: find the watcher that watched a value

intermediatechallenge

A search composable here shipped a watch(state.query) that never fired once. Vue only warns at runtime, on the path nobody exercises. Write the rule that finds it in source.