Home > @firebase/storage > UploadTask > then

UploadTask.then() method

This object behaves like a Promise, and resolves with its snapshot data when the upload completes.

Signature:

then(onFulfilled?: ((snapshot: UploadTaskSnapshot) => unknown) | null, onRejected?: ((error: FirebaseStorageError) => unknown) | null): Promise<unknown>;

Parameters

Parameter	Type	Description
onFulfilled	((snapshot: UploadTaskSnapshot) => unknown) | null	The fulfillment callback. Promise chaining works as normal.
onRejected	((error: FirebaseStorageError) => unknown) | null	The rejection callback.

Returns:

Promise<unknown>