How to use the @vue/reactivity.shallowReadonly function in @vue/reactivity

}
    if (Component.directives) {
      const names = Object.keys(Component.directives)
      for (let i = 0; i < names.length; i++) {
        validateDirectiveName(names[i])
      }
    }
  }
  // 0. create render proxy property access cache
  instance.accessCache = {}
  // 1. create public instance / render proxy
  instance.proxy = new Proxy(instance, PublicInstanceProxyHandlers)
  // 2. create props proxy
  // the propsProxy is a reactive AND readonly proxy to the actual props.
  // it will be updated in resolveProps() on updates before render
  const propsProxy = (instance.propsProxy = shallowReadonly(instance.props))
  // 3. call setup()
  const { setup } = Component
  if (setup) {
    const setupContext = (instance.setupContext =
      setup.length > 1 ? createSetupContext(instance) : null)

    currentInstance = instance
    currentSuspense = parentSuspense
    const setupResult = callWithErrorHandling(
      setup,
      instance,
      ErrorCodes.SETUP_FUNCTION,
      [propsProxy, setupContext]
    )
    currentInstance = null
    currentSuspense = null