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Lesson 9 — Log levels
Not every message matters
Logs have levels: debug < info < warn < error. In production you usually record only warn and above, so real problems are not buried in noise. Each level gets a number, and a message is printed only if its number is at least the minimum level's number.
const order = { debug: 0, info: 1, warn: 2, error: 3 };
Why it matters: the right level means you can find the one error among a million lines.
Want it another way?
Task
Finish log(): print "LEVEL msg" (level in capitals) only when order[level] >= order[min].
Run your code — when the output matches the task, you will see a green check. Then mark the lesson complete.
Test your knowledge
A quick 3-question quiz on this lesson — instant feedback.