What this snippet does
The Result pattern makes errors visible in return types — callers are forced to handle both cases instead of forgetting try/catch.
Expected output
value: 5 error: Division by zero value: 42 error: Not a number: abc
Why practise typing this
Typing error handling code builds muscle memory for the symbols and indentation JavaScript uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More JavaScript practice
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- error causeError Handling · advanced
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