Explain customizing Route Preloading to selectively load lazy routes.
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routingperformance
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Implementing a custom preloading strategy based on route data flags
import { Injectable } from '@angular/core';
import { PreloadingStrategy, Route } from '@angular/router';
import { Observable, of } from 'rxjs';
@Injectable({ providedIn: 'root' })
export class CustomPreloadStrategy implements PreloadingStrategy {
preload(route: Route, fn: () => Observable<any>): Observable<any> {
const shouldPreload = route.data && route.data['preload'] === true;
return shouldPreload ? fn() : of(null);
}
}05
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