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 gives a brand new interface, ServerRoute, that enables builders to configure whether or not particular person routes must be server-side rendered, prerendered, or rendered on the shopper aspect.
Additionally 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 Might to handle this use case. Occasion dispatch captures preliminary load occasions and replays them when the code answerable for dealing with occasions is on the market.
Angular 19 is sizzling module substitute (HMR) for kinds out of the field. The discharge allows experimental help for template HMR behind a flag. Earlier than this enchancment, when a developer modified the type 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 brand new HMR will compile the type 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 gives a sooner turnaround and uninterrupted circulate state.
