Similarly to the symmetry being strengthened between children and loadChildren,
a new loadComponent property will be introduced as the asynchronous version of component.
This will allow for direct single-component lazy loading:
```
{path: 'lazy/a', loadComponent:
() => import('./lazy/a.component').then(m => m.ACmp)},
{path: 'lazy/b', loadComponent:
() => import('./lazy/b.component').then(m => m.BCmp)},
```
This option requires that the component being loaded is standalone and
is implemented as a runtime check.
Other notes:
* Components are not loaded until all guards and resolvers complete.
* Loading the component is included in the function passed to the router
preloading strategy
* `RouteConfigLoadStart` and `RouteConfigLoadEnd` events emit at the
start and end of the component loading
* `CanLoad` guards _do not_ apply to `loadComponent`. `canActivate`
should be used instead, just like you would do if it were simply
`component` instead.
PR Close#45705
Route.pathMatch only allows `'full'|'prefix'` in reality. This commit
adjusts the type to be more strict and also adds a migration to adjust
existing code.
resolves#37469
BREAKING CHANGE:
The type of `Route.pathMatch` is now more strict. Places that use
`pathMatch` will likely need to be updated to have an explicit
`Route`/`Routes` type so that TypeScript does not infer the type as
`string`.
PR Close#45176
Many of the tests in the router code use the deprecated loadChildren as a string. This
has been deprecated for years and can easily be changed to just a function that
returns the module.
PR Close#43578
Redirects in the router are processed before activations. This means that a canActivate will
never execute if a route has a redirect. Rather than silently ignoring
the invalid config, developers should be notified so they know why it
doesn't work.
Closes#18605
The feature request for a function/class redirect is covered in #13373.
PR Close#40067
This commit refactors Router package to move config utils to a separate file for better
organization and to resolve the problem with circular dependency issue.
Resolves#38212.
PR Close#38229
Joey Perrott