/TypeScript/Ngsw pwa how to check version update

Ngsw pwa how to check version update

// You will probably need to tell the service worker to check the server for updates, I usually use a service for this:

export class UpdateService {

  constructor(public updates: SwUpdate) {
    if (updates.isEnabled) {
      interval(6 * 60 * 60).subscribe(() => updates.checkForUpdate()
        .then(() => console.log('checking for updates')));
    }
  }

  public checkForUpdates(): void {
    this.updates.available.subscribe(event => this.promptUser());
  }

  private promptUser(): void {
    console.log('updating to new version');
    this.updates.activateUpdate().then(() => document.location.reload()); 
  }
// In your app-component.ts:

  constructor(private sw: UpdateService) {
    // check the service worker for updates
    this.sw.checkForUpdates();
  }
// For whatever reason, Angular sometimes does not register the service worker properly. So you can modify `main.ts` :
// Replace:

// platformBrowserDynamic().bootstrapModule(AppModule);
// With:

platformBrowserDynamic().bootstrapModule(AppModule).then(() => {
  if ('serviceWorker' in navigator && environment.production) {
    navigator.serviceWorker.register('ngsw-worker.js');
  }
}).catch(err => console.log(err));

Source: stackoverflow.com

Similar codes

0 vote140 views1 answer
Em is relative to its font size
TypeScript
35 votes140 views4 answers
Because running scripts is disabled on this system. For more information, see about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=135170.
TypeScript
3 votes130 views1 answer
Ts reverse array
TypeScript
1 vote123 views1 answer
"mat-chip-list" is not a known element:
TypeScript
0 vote125 views1 answer
Ht office
TypeScript
1 vote84 views1 answer
Mongoose project first element from array
TypeScript
0 vote123 views1 answer
Error TS2304: Cannot find name 'beforeEach'.
TypeScript
0 vote135 views1 answer
How to read excel spreadsheets in c++
TypeScript
1 vote135 views1 answer
Check if string include numbers in typescript
TypeScript
0 vote115 views1 answer
Typescript dynamic type
TypeScript