const anyState =  createStore({
    name: 'John',
    age: 30,
    children: [{
      name: 'Bob',
      age: 5,
    }]
  });

  anyState.setState({
    name: 'John',
    age: 32,
    children: [{
      name: 'Bob',
      age: 4,
    }]
  });

  const state = anyState.getState();

  // const path = 'name';
  const path = 'children[0].name'; // the path to the item
  anyState.setItem(path, 'Jane');

  const path = 'children[0]';
  const child = anyState.getItem(path);

  const path = 'name'; // path to item
  anyState.watch(path, (nextState, prevState) => {
     // do anything
  });

  npm install

  npm test

  npm run dev