What this snippet does
Intersecting conflicting property types results in the 'never' type, making the property unassignable without type assertions.
Expected output
1
Why practise typing this
Typing union and intersection 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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