Previous to Angular 19, when server-side rendering is enabled, by default Angular will server-side render all the parameterized routes and pre-render all routes with out parameters. With the route-level render mode, Angular supplies a brand new interface, ServerRoute, that permits builders to configure whether or not particular person routes needs to be server-side rendered, prerendered, or rendered on the consumer aspect.
Additionally in Angular 19, occasion replay is enabled by default. A standard downside in server-side-rendered functions is the hole between a consumer occasion and the browser downloading and executing code liable for dealing with the occasion. An occasion dispatch library was shared final Could to handle this use case. Occasion dispatch captures preliminary load occasions and replays them when the code liable for dealing with occasions is obtainable.
Angular 19 is sizzling module substitute (HMR) for kinds out of the field. The discharge allows experimental assist for template HMR behind a flag. Earlier than this enchancment, when a developer modified the type or template of a element and saved the file, the Angular CLI would rebuild the app and ship a notification to the browser, which might refresh. The brand new HMR will compile the type or template refreshed, ship the end result to the browser, and patch the applying with out a web page refresh and any state loss. This supplies a quicker turnaround and uninterrupted stream state.
