[Home](./index.md) > [server](./server.md) > [IterationMap](./server.iterationmap.md) > [keys](./server.iterationmap.keys.md) ## IterationMap.keys() method Returns an iterator for the keys in the IterationMap. **Signature:** ```typescript keys(): IterableIterator; ``` **Returns:** IterableIterator<K> An iterator for the keys.