[Home](./index.md) > [@firebase/firestore](./firestore.md) > [/](./firestore_.md) > [LoadBundleTaskProgress](./firestore_.loadbundletaskprogress.md) > [bytesLoaded](./firestore_.loadbundletaskprogress.bytesloaded.md) ## LoadBundleTaskProgress.bytesLoaded property How many bytes have been loaded. Signature: ```typescript bytesLoaded: number; ```