What this snippet does
Using primitives in function signatures prevents passing the wrong data type into business logic.
Expected output
Hello Alice, you are 30
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.
More TypeScript practice
- Declaring variables with primitive typesBasic Types · beginner
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- Pushing a wrong type to a typed arrayBasic Types · beginner
- Declaring a fixed-length tupleBasic Types · beginner