[Home](./index.md) > [@firebase/storage](./storage.md) > [FullMetadata](./storage.fullmetadata.md) > [generation](./storage.fullmetadata.generation.md) ## FullMetadata.generation property The object's generation. [https://cloud.google.com/storage/docs/generations-preconditions](https://cloud.google.com/storage/docs/generations-preconditions) Signature: ```typescript generation: string; ```