Files
angular__angular/packages/router
Andrew Scott d8cf78ba5e fix(router): Do not call preload method when not necessary (#47007)
In Angular 14, we introduced the `loadComponent` API for a `Route` to
allow lazy loading of a routed component in addition to the existing
`loadChildren` which allows lazy loading of child routes. As a result,
the `preload` method of the `PreloadingStrategy` needs to sometimes be
called even when there is a `canLoad` guard on the `Route`. `CanLoad`
guards block loading of child routes but _do not_ block loading of the
component.

This change updates the conditional checks in the internal preloader to
skip calling the `PreloadingStrategy.preload` when there is only a
`loadChildren` callback with a `canLoad` guard an no `loadComponent`.
In this case, the callback passed to the `preload` method is already
effectively a no-op so it's not necessary to call it at all.

resolves #47003

PR Close #47007
2022-08-02 09:38:28 -07:00
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Angular Router

Managing state transitions is one of the hardest parts of building applications. This is especially true on the web, where you also need to ensure that the state is reflected in the URL. In addition, we often want to split applications into multiple bundles and load them on demand. Doing this transparently isn’t trivial.

The Angular router is designed to solve these problems. Using the router, you can declaratively specify application state, manage state transitions while taking care of the URL, and load components on demand.

Guide

Read the dev guide here.