import { ExactOptional } from '../exactOptional';
import { DocumentReference } from '../refs';
import { Precondition, WriteResult, DocumentData } from '../alias';
import { Transaction } from '../transaction';
import { WriteBatch } from '../batch';
import { MetaType } from '../metaTypeCreator';
export type UpdateCreator<U, NoFlatten extends boolean> = <T extends MetaType, const Data extends DocumentData>(reference: DocumentReference<T>, data: Data extends never ? Data : ExactOptional<T['writeFlatten'], Data, false, NoFlatten, true>, precondition?: Precondition) => U;
export type Update = UpdateCreator<Promise<WriteResult>, false>;
export type UpdateNoFlatten = UpdateCreator<Promise<WriteResult>, true>;
export type TransactionUpdate = UpdateCreator<Transaction, false>;
export type TransactionUpdateNoFlatten = UpdateCreator<Transaction, true>;
export type WriteBatchUpdate = UpdateCreator<WriteBatch, false>;
export type WriteBatchUpdateNoFlatten = UpdateCreator<WriteBatch, true>;