Previous to Angular 19, when server-side rendering is enabled, by default Angular will server-side render the entire parameterized routes and pre-render all routes with out parameters. With the route-level render mode, Angular gives a brand new interface, ServerRoute, that permits builders to configure whether or not particular person routes must be server-side rendered, prerendered, or rendered on the consumer aspect.
Additionally in Angular 19, occasion replay is enabled by default. A standard drawback in server-side-rendered functions is the hole between a person occasion and the browser downloading and executing code accountable for dealing with the occasion. An occasion dispatch library was shared final Might to handle this use case. Occasion dispatch captures preliminary load occasions and replays them when the code accountable for dealing with occasions is accessible.
Angular 19 is scorching module alternative (HMR) for kinds out of the field. The discharge permits experimental help for template HMR behind a flag. Earlier than this enchancment, when a developer modified the fashion 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 fashion or template refreshed, ship the outcome to the browser, and patch the appliance with out a web page refresh and any state loss. This gives a quicker turnaround and uninterrupted stream state.
