Method runTransaction

packages/firebase-firestore/index.ios.ts:1421–1447

(updateFunction: (transaction: Transaction) => Promise<any>)

	}

	runTransaction(updateFunction: (transaction: Transaction) => Promise<any>): Promise<any> {
		return new Promise((resolve, reject) => {
			this.native.runTransactionWithBlockCompletion(
				(transaction, error) => {
					const lock = NSLock.new();
					let returnValue;
					dispatch_async(main_queue, () => {
						updateFunction(Transaction.fromNative(transaction))
							.then((value) => {
								returnValue = value?.native || value || null;
							})
							.catch((e) => {
								return null;
							});
					});
					lock.lock();
				},
				(done, done_error) => {
					if (done_error) {
						reject(FirebaseError.fromNative(done_error));
					} else {
						resolve(deserializeField(done));
					}
				}
			);
		});
	}

	get settings() {
		return Settings.fromNative(this.native?.settings, this.native);