Using [email protected] causes a resolve error

[albatrosary]

Using [email protected] causes a resolve error. Modify the interface as it changes.

ERROR in ./src/app/pages/guards-pages.service.ts
Module build failed: Error: /Users/albatrosary/work/start-angular/src/app/pages/guards-pages.service.ts (13,14): Class 'GuardsPagesService' incorrectly implements interface 'Resolve<PagesComponent>'.
  Types of property 'resolve' are incompatible.
    Type '() => boolean' is not assignable to type '(route: ActivatedRouteSnapshot, state: RouterStateSnapshot) => PagesComponent | Observable<PagesC...'.
      Type 'boolean' is not assignable to type 'PagesComponent | Observable<PagesComponent> | Promise<PagesComponent>'.)
    at _checkDiagnostics (/Users/albatrosary/work/start-angular/node_modules/@ngtools/webpack/src/loader.js:116:15)
    at /Users/albatrosary/work/start-angular/node_modules/@ngtools/webpack/src/loader.js:141:17