What this snippet does
AsyncGenerator types take TYield, TReturn, and TNext, defining the shape of yielded promises and the final return value.
Expected output
{ value: 1, done: false }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
- Attempting to use for-of on an async iteratorAsync 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