What does typeof return for null, arrays, classes, and undeclared variables?
console.log(typeof null);
console.log(typeof []);
console.log(typeof function () {});
console.log(typeof class {});
console.log(typeof NaN);
console.log(typeof 10n);
console.log(typeof notDeclaredAnywhere);
console.log(typeof typeof 1);
The answer
Work out every line it logs, in order. Then check.
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