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 enables builders to configure whether or not particular person routes must be server-side rendered, prerendered, or rendered on the consumer facet.
Additionally in Angular 19, occasion replay is enabled by default. A standard drawback 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 scorching module substitute (HMR) for types out of the field. The discharge allows experimental assist for template HMR behind a flag. Earlier than 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 brand new HMR will compile the fashion or template refreshed, ship the consequence to the browser, and patch the appliance with no web page refresh and any state loss. This supplies a sooner turnaround and uninterrupted circulate state.
