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Features

Angular features with stage changes in version 19.x(compared to version 18.x)

Target version status

Feature	18	19
@let	18.1
output()
outputFromObservable
outputToObservable
Signal inputs
Signal inputs converter
Signal model
Signal queries
takeUntilDestroyed
withEventReplay
withRequestsMadeViaParent
AngularAppEngine
AngularNodeAppEngine
createNodeRequestHandler
createRequestHandler
createWebRequestFromNodeRequest
isMainModule
linkedSignal
PendingTasks
PrerenderFallback
provideServerRendering
RenderMode
ServerRoute
withIncrementalHydration
withViewTransitions
writeResponseToNodeResponse
afterRenderEffect
auto-csp
experimentalPlatform
httpResource()		19.2
pendingUntilEvent
resource()
rxResource()
APP_INITIALIZER
ENVIRONMENT_INITIALIZER
PLATFORM_INITIALIZER

@let

Define a local variable and re-use it across the template.

18.1

output()

Enable emitting values to parent directives and components.

outputFromObservable

Output using an RxJS observable as a source for events dispatched to parent subscribers.

outputToObservable

Convert an Angular output declared via output() or outputFromObservable() to an observable.

Signal inputs

Allow values to be bound from parent components.

Signal inputs converter

Language service refactoring action that can convert `@Input()` declarations to signal inputs.

Signal model

Special type of input that enable a component to propagate new values back to another component.

Signal queries

Signals to retrieve references to child components, directives, DOM elements, and more.

takeUntilDestroyed

Complete the Observable when the calling context (component, directive, service, etc) is destroyed.

withEventReplay

Support for replaying user events (e.g. clicks) that happened on a page before hydration logic has completed.

withRequestsMadeViaParent

Configure the current `HttpClient` instance to make requests via the parent injector's `HttpClient` instead of directly.

AngularAppEngine

Manage Angular server applications (including localized ones), handles rendering requests, and optionally transforms index HTML before rendering.

AngularNodeAppEngine

Manage Angular server applications (including localized ones), handles rendering requests, and optionally transforms index HTML before rendering.

createNodeRequestHandler

Attache metadata to the handler function to mark it as a special handler for Node.js environments.

createRequestHandler

Annotate a request handler function with metadata, marking it as a special handler.

createWebRequestFromNodeRequest

isMainModule

Determine whether the provided URL represents the main entry point module.

linkedSignal

Represent state (hence the signal in the name) that is reset based on the provided computation.

PendingTasks

Experimental service that keeps track of pending tasks contributing to the stableness of Angular application.

PrerenderFallback

Fallback strategies for Static Site Generation (SSG) routes.

provideServerRendering

Configure the necessary providers for server routes configuration.

RenderMode

Different rendering modes for server routes.

ServerRoute

Server route configuration.

withIncrementalHydration

Enable support for incremental hydration using the `hydrate` trigger syntax.

withViewTransitions

Enable view transitions in the Router

writeResponseToNodeResponse

afterRenderEffect

Create effect(s) that run as part of Angular's `afterRender` sequence.

auto-csp

Opt-in option in angular.json to enable the auto-CSP transformation

experimentalPlatform

Specifie the platform for which the server bundle is generated

httpResource()

new frontend to the HttpClient infrastructure

19.2

pendingUntilEvent

Operator which makes the application unstable until the observable emits, complets, errors, or is unsubscribed.

resource()

Construct a `Resource` that projects a reactive request to an asynchronous operation defined by a loader function, which exposes the result of the loading operation via signals.

rxResource()

Construct a `Resource` that projects a reactive request to an asynchronous operation defined by a RxJS based loader function, which exposes the result of the loading operation via signals.

APP_INITIALIZER

ENVIRONMENT_INITIALIZER

PLATFORM_INITIALIZER

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