【Q614】immer 的原理是什么，为什么它的性能更高

[shfshanyue]

const state = {
  user: { id: 3 },
  role: { name: 'admin' }
}

const proxyState = new Proxy(state, {
  get (target, prop) {
    return target[prop]
  },
})

//=> True
state !== proxyState

//=> True
state.user === proxyState.user