Lesson 09 · 10 min
Errors: throw, try/catch, cause
An error isn't the end of the world if you know where to catch it.
10 minLesson 9 of 10Practice includedAsk AI on any point
There are two kinds of errors. Expected ones — the file is missing, the network is down, the user typed nonsense: you catch and handle them. Bugs — undefined is not a function: you don't hide them, you fix them. In async code, throw rejects the Promise, and try/catch around await catches it. Your own error class with a code or status field lets you tell one from another.
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