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| typeof {} => 'object'
typeof [] => 'object'
typeof null => 'object'
typeof new RegExp() => 'object'
typeof new Date() => 'object'
typeof new String('test') => 'object'
typeof new Number(100) => 'object'
typeof 0 => 'number'
typeof Infinity => 'number';
typeof NaN => 'number';
typeof () => {} => 'function'
typeof class TEST {} => 'function'
typeof new Functiuon() => 'function'
typeof true => 'boolean'
typeof undefined => 'undefined'
typeof document.all => 'undefined'
typeof undeclaredVariable => 'undefined'
typeof 'test' => 'string'
typeof Symbol() => 'symbol'
|