Angular Service worker (ngsw-worker.js) is not generated in the "/dist" folder after running...

I'm checking an NX project to see if the service worker is performing as planned. After running "ng build appname," I have a problem in that the Angular Service worker is not generated in the "/dist" folder. What can I do to fix this?

Imported in the app.module as should below

// PWA
ServiceWorkerModule.register('ngsw-worker.js', {
enabled:true,
// Register the ServiceWorker as soon as the app is stable
// or after 30 seconds (whichever comes first).
registrationStrategy: 'registerWhenStable:30000',
// registrationStrategy: 'registerImmediately'
}),

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