What this snippet does
Building large tuples via recursion is a common pattern for integer math in types, but hits instantiation depth limits quickly.
Expected output
Compile Error: Type instantiation is excessively deep and possibly infinite.
Why practise typing this
Typing type system limits 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.
More TypeScript practice
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- Defining a circular type referenceType System Limits · advanced