What this snippet does
Standard for-of loops cannot handle async iterators; you must use for-await-of to consume them correctly.
Expected output
Compile Error: Type 'AsyncGenerator<number, void, unknown>' is not an array type or a string type.
Why practise typing this
Typing async iteration 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
- Implementing an async iteratorAsync Iteration · advanced
- Consuming an async stream with for awaitAsync Iteration · advanced
- Typing an async generator functionAsync Iteration · advanced
- Polling an API asynchronouslyAsync Iteration · advanced
- Passing wrong types to async generator next()Async Iteration · advanced
- Declaring variables with primitive typesBasic Types · beginner