What this snippet does
Mapped types over tuples preserve their length and order, transforming the element types while keeping the tuple structure intact.
Expected output
[ true, false ]
Why practise typing this
Typing basic types 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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