import { PreloadingStrategy, Route } from '@angular/router'
import { Observable, of } from 'rxjs'

/**
 * 预加载策略
 */
export class SelectivePreloadingStrategy implements PreloadingStrategy {
    preload(route: Route, load: Function): Observable<any> {
        //默认进行加载，当配置了preload=false时不预加载
        return route.data && route.data.preload === false ? of(null) : load();
    }
}