Provides a preloading strategy.
class PreloadingStrategy {
preload(route: Route, fn: () => Observable<any>) : Observable<any>
}
preload(route: Route, fn: () => Observable<any>) : Observable<any>
exported from router/index, defined in router/src/router_preloader.ts
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Licensed under the Creative Commons Attribution License 4.0.
https://angular.io/docs/ts/latest/api/router/index/PreloadingStrategy-class.html