Hydration

Hydration reuses server-rendered DOM and attaches Angular’s event listeners without re-rendering.

export const appConfig = {
  providers: [
    provideClientHydration()
  ]
};

// Incremental hydration (Angular 18+)
provideClientHydration(withIncrementalHydration())

Hydration eliminates the blank flash that plagues non-hydrated SSR apps.”