const { createStore } = require('composed-store');

// create store instance and compose with sub stores. 
const store = createStore();
store.add(new Store_Impl1());
store.add(new Store_Impl2());
store.add(new Store_Impl3());

// get
const value = await store.get({ query: { key: 'foo' }});

// set
await store.set('a', 'b');