How do I postMessage with custom plugin (cacheDidUpdate)?

Question

I want to count every updated or installed cache and send this value to client. How can I do this? I wrote this code but it do nothing in cacheDidUpdate. What is the easiest way to do it? My sw.js:

importScripts('https://storage.googleapis.com/workbox-cdn/releases/6.4.1/workbox-sw.js')
let { PrecacheController } = workbox.precaching
let { cacheDidUpdate } = workbox.core
async function notifyClients(message) {
    let clients = await self.clients.matchAll({ includeUncontrolled: true });
    clients.forEach(client => client.postMessage(message))
}
notifyClients({ type: 'INSTALLING' })
let cached = 0;
let manifest = self.__WB_MANIFEST;
const precacheController = new PrecacheController(
    {},
    'precache',
    [
        {
            cacheDidUpdate: async (e) => {
                console.log('CACHE_DID_UPDATE');
                notifyClients({
                    type: 'CACHE_DID_UPDATE',
                    cached: ++cached,
                    total: manifest.length
                })
            }
        }
    ]
)

precacheController.addToCacheList(manifest)
self.addEventListener('install', async (event) => {
    await event.waitUntil(precacheController.install(event));

    notifyClients({ type: 'DONE' })
})