Prior 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 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 facet.
Also in Angular 19, occasion replay is enabled by default. A typical drawback in server-side-rendered purposes is the hole between a person occasion and the browser downloading and executing code answerable for dealing with the occasion. An occasion dispatch library was shared final May to deal with this use case. Event dispatch captures preliminary load occasions and replays them when the code answerable for dealing with occasions is on the market.
Angular 19 is scorching module alternative (HMR) for kinds out of the field. The launch allows experimental help for template HMR behind a flag. Before this enchancment, when a developer modified the fashion or template of a part and saved the file, the Angular CLI would rebuild the app and ship a notification to the browser, which might refresh. The new HMR will compile the fashion or template refreshed, ship the end result to the browser, and patch the applying and not using a web page refresh and any state loss. This supplies a sooner turnaround and uninterrupted movement state.
