mastermoo

// store.js
import {observable} from 'mobx';

class CounterStore {
  @observable counter = 0;

  increment() { this.counter++; }

  decrement() { this.counter--; }
}

wcandillon

import * as fb from "firebase";
import { computed, observable, runInAction } from "mobx";

type Query = fb.firestore.Query;
type DocumentReference = fb.firestore.DocumentReference;
type DocumentSnapshot = fb.firestore.DocumentSnapshot;
type LoadingDocumentSnapshot = DocumentSnapshot | undefined;
type Dictionary<T> = { [key: string]: T };
// type QuerySnapshot = fb.firestore.QuerySnapshot;
// type LoadingCollectionSnapshot = QuerySnapshot | undefined;