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