What this snippet does
Promise.race with a timeout promise is the standard way to cancel a hanging async operation.
Expected output
fast done Timed out after 200ms
Why practise typing this
Typing async/await 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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