What is MobX? MobX क्या है?

// MobX - reactive state management
import { makeObservable, observable, action } from 'mobx';
import { observer } from 'mobx-react';

class Store {
  count = 0;
  
  constructor() {
    makeObservable(this, {
      count: observable,
      increment: action
    });
  }
  
  increment() {
    this.count++;
  }
}

const store = new Store();

const Counter = observer(() => (
  <button onClick={() => store.increment()}>
    {store.count}
  </button>
));