zulip/store/index.js

import { createStore } from 'zustand/vanilla'

export const store = createStore((set, get) => ({
  user: null,
  items: [],
  route: 'home',
  
  // Actions
  setUser: (user) => set({ user }),
  addItem: (item) => set(s => ({ items: [...s.items, item] })),
  removeItem: (id) => set(s => ({ items: s.items.filter(i => i.id !== id) })),
  navigate: (route) => set({ route }),
}))