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LoadBundleTask class
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Represents the task of loading a Firestore bundle. It provides progress of bundle loading, as well as task completion and error events.

The API is compatible with Promise.

Signature:

export declare class LoadBundleTask implements PromiseLike

Implements: PromiseLike<LoadBundleTaskProgress>

Methods

Method	Modifiers	Description
catch(onRejected)		Implements the `Promise.catch` interface.
onProgress(next, error, complete)		Registers functions to listen to bundle loading progress events.
then(onFulfilled, onRejected)		Implements the `Promise.then` interface.

Implements the Promise.catch interface.

Signature:

catch(onRejected: (a: Error) => R | PromiseLike): Promise | LoadBundleTaskProgress>;

Parameter	Type	Description
onRejected	(a: Error) => R \| PromiseLike	Called when an error occurs during bundle loading.

Returns:

PromiseLoadBundleTaskProgress>

Registers functions to listen to bundle loading progress events.

Signature:

onProgress(next?: (progress: LoadBundleTaskProgress) => unknown, error?: (err: Error) => unknown, complete?: () => void): void;

Parameter	Type	Description
next	(progress: LoadBundleTaskProgress) => unknown	Called when there is a progress update from bundle loading. Typically `next` calls occur each time a Firestore document is loaded from the bundle.
error	(err: Error) => unknown	Called when an error occurs during bundle loading. The task aborts after reporting the error, and there should be no more updates after this.
complete	() => void	Called when the loading task is complete.

Returns:

void

Implements the Promise.then interface.

Signature:

then, R>(onFulfilled?: (a: LoadBundleTaskProgress) => T | PromiseLike, onRejected?: (a: Error) => R | PromiseLike): Promise | R>;

Parameter	Type	Description
onFulfilled	(a: LoadBundleTaskProgress) => T \| PromiseLike	Called on the completion of the loading task with a final `LoadBundleTaskProgress` update. The update will always have its `taskState` set to `"Success"`.
onRejected	(a: Error) => R \| PromiseLike	Called when an error occurs during bundle loading.

Returns:

Promise