Type Alias TraverseEachCallback<D>

TraverseEachCallback: (
    doc: firestore.QueryDocumentSnapshot<D>,
    docIndex: number,
    batchIndex: number,
) => void | Promise<void>

An asynchronous function that takes a document snapshot, its 0-based index within the batch, and the 0-based index of the batch as arguments.

Type Parameters

D = firestore.DocumentData

Type declaration

- (
      doc: firestore.QueryDocumentSnapshot<D>,
      docIndex: number,
      batchIndex: number,
  ): void | Promise<void>
- Parameters
  - doc: firestore.QueryDocumentSnapshot<D>
  - docIndex: number
  - batchIndex: number
  Returns void | Promise<void>