Announcing NgRx v22: Resource Extensions, Dynamic Deep Signals, a Light Theme, and more!

We are pleased to announce the latest major version of the NgRx framework, featuring exciting new features, bug fixes, and other updates. Resource Extensions 🧩 Angular's resource and httpResource APIs cover a large part of async state management, but two very common requirements are not configurable at the resource level: Value on loading: when a resource reloads, value() resets to undefined until the new data arrives. Value on error: when a resource enters the error state, reading value() throws. The new @ngrx/signals/resource entry point addresses both cases with resource extensions : a set of utilities for customizing the behavior of a Resource in a composable, reusable way. They wrap an existing resource and patch only the parts of its behavior that should change, while fully preserving the original resource type. The extendResource function accepts the resource as the first argument, followed by the extensions to apply: import { Component } from ' @angular/core ' ; import { httpResource } from ' @angular/common/http ' ; import { extendResource , withPreviousValueOnLoading , withValueOnError , } from ' @ngrx/signals/resource ' ; @ Component ({ /* ... */ }) export class TodoList { // type: HttpResourceRef<Todo[] | undefined> readonly todosResource = extendResource ( httpResource < Todo [] > (() => ' /api/todos ' ), withPreviousValueOnLoading (), withValueOnError ( undefined ) ); } The returned resource is still the exact resource that was passed in, so no access is lost to the APIs of more specific resource types, such as WritableResource . Only value() behaves differently: it keeps the previously loaded todos while a reload is in flight, and returns undefined instead of throwing when the request fails. Built-in Extensions There are four built-in extensions: withPreviousValueOnLoading keeps the last resolved value while the resource is reloading, which is exactly what paginated and filtered lists need to avoid flickering. withValueOnLoading returns a specific fal