#034typeof null Returns "object"
js.easyJS
1function processConfig(config) {
2 if (typeof config !== 'object') {
3 throw new Error('Config must be an object');
4 }
5 return config.host + ':' + config.port;
6 // TypeError: Cannot read properties of null
7}
8
9processConfig(null); // should throw, but doesn't
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#034PracticeEasy8 min · 50 XP
typeof null Returns "object"
A null check using typeof passes for null values and crashes downstream code.
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