swftvsn

package firebase;

public class FirebasePushIdGenerator {

	// Modeled after base64 web-safe chars, but ordered by ASCII.
	private final static String PUSH_CHARS = "-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz";

	// Timestamp of last push, used to prevent local collisions if you push twice in one ms.
	private static long LAST_PUSH_TIME = 0L;
	

swftvsn

// one can also use Google Cloud Firestore library,
// with a slight change in semantics
import { firestore } from 'firebase-admin';
import { EventContext, runWith } from 'firebase-functions';
import { promisify } from 'util';

const eventCollection = 'function-events';

enum EventStatus {
  RUNNING = 'running',