TypeScript

Catch clause typed as unknown in TypeScript

TypeScriptError HandlingCatching Unknownintermediate

What this snippet does

With useUnknownInCatchVariables, caught errors are unknown, forcing developers to narrow the type before interacting with it.

Expected output

CRASH

Why practise typing this

Typing error handling code builds muscle memory for the symbols and indentation TypeScript 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.

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