Refactor createSignal to return a tuple instead of a signal getter. createSignalTuple will be removed in a follow up pr once createSignalTuple usages in google3 are migrated to createSignal.
PR Close#61705
`Resource.error` used to return `unknown`. Now it's `Error | undefined`.
For non-`Error` types they are encapsulated with the `Error` type.
PR Close#61441
When passing bindings as arguments or storing them before use in
`createComponent`, it's handy to be able to reference this type.
The current workaround is to use `ReturnType<typeof inputBinding>`.
PR Close#61351
This commit exposes the experimental enableProfiling() API that
enables Angular integration with the Chrome DevTools performance
panel. Previously this integration was exposed on the ng. namespace
only but there are legitimate cases where developers might want to
expose the integration earlier (ex.: bootstrap profiling).
PR Close#61465
Our intention was to remove TestBed.flushEffects() in Angular v20
as it was a developer preview API that doesn't need to follow our
deprecation policy. It turned out, though, that the angular.dev
documentation wasn't displaying the @developerPreview annotation
properly so some of the developers might have been unaware of the
non-stable nature of this API.
This commits re-introduces the TestBed.flushEffects() API. This
API call will delegate to TestBed.tick().
PR Close#61462
After nearly a decade of existence, there are 0 uses of
`autoDetectChanges(false)` internally. All uses of
`autoDetectChanges(true)` can be migrated directly to
`autoDetectChanges()` instead.
PR Close#61429
Add createSignalTuple function to match Wiz array destructuring signal return. This will be the implementation for createSignal once createSignal usages in google3 are migrated to createSignalTuple.
PR Close#60903
This change renames the afterRender to afterEveryRender and marks the
renamed API as stable.
BREAKING CHANGE: afterRender was renamed to afterEveryRender.
PR Close#60999
This commit introduces the `TestBed.tick()` method that,
similarly to the `ApplicationRef.tick()`, synchronizes state
with the DOM. It can be used in unit tests to mimic framework's
logic executed in production applications. The `TestBed.tick()`
should be used instead of the removed `TestBed.flushEffects()`.
BREAKING CHANGE: the `TestBed.flushEffects()` was removed - use
the `TestBed.tick()` instead.
PR Close#60993
This commit makes several changes changes to the
`provideExperimentalCheckNoChangesForDebug` API:
* Rename it
* Promote to dev preview
* Apply the exhaustive behavior to _all_ checkNoChanges runs
* Remove `useNgZoneOnStable` option. This wasn't found to be generally
more useful than `interval`
fixes#45612
BREAKING CHANGE: `provideExperimentalCheckNoChangesForDebug` has several
breaking changes:
* It is renamed to `provideCheckNoChangesConfig`
* The behavior applies to _all_ checkNoChanges runs
* The `useNgZoneOnStable` option is removed. This wasn't found to be generally
more useful than `interval`
PR Close#60906
BREAKING CHANGE:
This commit deprecates `ng-reflect-*` attributes and updates the runtime to stop producing them by default. Please refactor application and test code to avoid relying on `ng-reflect-*` attributes.
To enable a more seamless upgrade to v20, we've added the `provideNgReflectAttributes()` function (can be imported from the `@angular/core` package), which enables the mode in which Angular would be producing those attribites (in dev mode only). You can add the `provideNgReflectAttributes()` function to the list of providers within the bootstrap call.
PR Close#60973
As decided in the Resource RFC, this commit renames `loader` in `rxResource`
to `stream`. Some logic is left in to support gradual rollout of this change
in g3.
PR Close#60919
As decided in the resource RFC, this commit renames the `request` option of
a resource to `params`, including the subsequent argument passed to the
loader. It also corrects the type in the process to properly allow narrowing
of the `undefined` value.
Fixes#58871
PR Close#60919
An outcome of the Resource RFC was that we should use string constants for
communicating the resource status instead of an enum. This commit converts
`ResourceStatus` accordingly.
PR Close#60919
This commit moves zoneless from experimental to developer preview.
* Update tag on provider API
* Remove "experimental" from provider name
* Move documentation from "experimental features" to "Best practives ->
Performance" (at least temporarily until there is a better place)
BREAKING CHANGE: `provideExperimentalZonelessChangeDetection` is
renamed to `provideZonelessChangeDetection` as it is now "Developer
Preview" rather than "Experimental".
PR Close#60748
Instead of stabilizing the TestBed.flushEffects() API we intend to
replace it with the tick() method (equivalent of ApplicationRef.tick().
The reasoning here is that we prefer tests running the entire
synchronization process (as in production apps) instead of invoking
parts of the synchronization process in a way that would naver happen
in a running application.
PR Close#60959
This commit adds a provider that installs listeners on the browser
window to forward unhandled promise rejections and uncaught errors to
the `ErrorHandler`. This is useful for both ZoneJS and Zoneless
applications. For apps using ZoneJS, errors can reach the window when
they happen outside the Angular Zone. For Zoneless apps, any errors not
explicitly caught by the framework can reach the window. Without this
provider, these errors would otherwise not be reported to
`ErrorHandler`.
We will/should consider adding this provider to apps by default in the
cli. In addition, it should be mentioned in the (to be created)
documentation page on error handling in Angular.
relates to #56240
PR Close#60704
This commit exposes the enableProfiling() function which enables
performance data visualisation directly in the Chrome DevTools
performance panel.
PR Close#60789
With the changes in #59573, `resource` can now define a `stream` rather than a `loader`.
In the same PR, `rxResource` was updated to leverage this new functionality to handle multiple responses from the underlying observable,
rather than just the first one as it was previously.
This commit renames the `loader` option of `rxResource` into `stream` to be better aligned with its new behavior.
The previous version is temporarily kept and marked as deprecated to help migrating the current usage.
Before
```
usersResource = rxResource({
request: () => ...,
loader: ({ request }) => ...
});
```
After
```
usersResource = rxResource({
request: () => ...,
stream: ({ request }) => ...
});
```
PR Close#59910
This PR marks `PendingTasks` as stable, though the `run` function
remains in dev preview. There are still questions around its return
value, error handling, and whether it will be replaced by a different
`task` API that would better track context through the
injector/injection context.
PR Close#60716
In this commit, we unsubscribe the `hasPendingTasks` subject to remove all active observers and enable granular garbage collection, as users may forget to unsubscribe manually when subscribing to `isStable`.
PR Close#59723
This commit adds a flag `forceSyncFirstEmit` which opts in to the pending
new behavior for `toObservable`, which emits the first value synchronously.
This flag is only really meant for use during a short migration period
while we update g3, and is not meant for prolonged usage. As a result, it's
marked deprecated.
PR Close#60640
Moves the `DOCUMENT` token from `common` into `core` since it's relevant for lots of SSR use cases and users shouldn't have to install `common` for it. The token is still exported through `common` for backwards compatibility.
PR Close#60663
This updates `createSignal` to use `signalGetFn` to define the signal getter and exports `signalGetFn` from the shared signal primitives.
PR Close#60497
This flag is effectively unused in Angular code that we've seen, and is only
serving to complicate the mental model of effects. It could be reintroduced
if needed.
PR Close#60535
When the HMR is enabled in Angular, all `@defer` block dependencies are loaded
eagerly, instead of waiting for configured trigger conditions. From the DX perspective,
it might be seen as an issue when all dependencies are being loaded eagerly. This commit
adds a logic to produce a message into the console to provide more info for developers.
PR Close#60533
This allows `ng.getDirectiveMetadata` to be implemented by Wiz and ACX with subtly different shapes to match the nuances of those frameworks.
Existing usage of `{Component,Directive}DebugMetadata` was moved over to `Angular{Component,Directive}DebugMetadata` as appropriate, since the implementation of `ng` in `@angular/core` is specific to Angular. Only the types support Wiz and ACX.
I opted to merge `ComponentDebugMetadata` and `DirectiveDebugMetadata` into a single type of all the frameworks including both components and directives (recall that components extend directives). The reasoning for this is because Wiz does not support directives (you can kind of think of "Wiz Directive" as an abstract class extended by "Wiz Components"). I felt that a `DirectiveDebugMetadata` containing only Angular and ACX types would be a bit of a trap and lead to bugs when used. It's safer to just have the single type containing all the possible results from `ng.getDirectiveMetadata`.
I also chose to leave the `ng` type as is internally, since `@angular/core` implements a specific concrete version of it narrowed to Angular types. Separately I defined an expanded `FrameworkAgnosticGlobalUtils` which redefines `ng.getDirectiveMetadata` to include Wiz and ACX. We want this type to exist in the Angular GitHub repo so it can be referenced as a common primitive across all three frameworks. This is sufficient for now, however longer term we will likely want to actually manually define the function types in this framework-agnostic interface and make Angular's version properly implement it rather than extend and overwrite Angular's type.
PR Close#60475
`TestBed.get` isn't type safe and has been deprecated for several years now. These changes remove it from the public API and a follow-up change will add an automated migration to `TestBed.inject`.
BREAKING CHANGE:
* `TestBed.get` has been removed. Use `TestBed.inject` instead.
PR Close#60414
Adds a hook in the same style as `postSignalSetFn` for running side effects when a producer has been created. This hook will be passed the reactive node being created.
PR Close#60333
This commit removes the previously added `rejectErrors` option from
`toSignal` which was meant to create similar behavior to what happens
with unhandled errors in `AsyncPipe`.
This option promotes unhandled exceptions and attaches behaviors that we
do not believe are desirable as an option offered by the framework:
* Unhandled errors that are thrown lose the context of where the error
ocurred. Throwing the error where the signal is read allows error
handling to be performed at the signal's usage location
* With this feature, the value of the signal remains set to the initial
value or the previous successful value coming out of the `Observable`.
We do not feel this is appropriate implicit behavior but should be an
explicit choice by the application. Signals are built to represent
state. When an observable stream is converted to a stateful
representation, there should be a choice made about what state should
be presented when an error occurs
* If an error occurs but the signal value is never read in its error
state, this is not an application state error that should result in an
unhandled exception.
* While Angular does not have error boundaries today, there is likely to
be investigation in the near future to address increased risk of
errors thrown from signals such as this in templates. Without
pre-designing any specifics, it is possible that this type of feature
would require the error to be thrown from the signal. We are subsequently
not prepared to commit to stabilizing the `toSignal` API with the
`rejectErrors` option and its current behavior.
Developers that desire similar behavior to `rejectErrors` have several
options, the simplest of which would be something similar to
`toSignal(myStream.pipe(catchError(() => EMPTY)))`.
PR Close#60397
Builds on the changes from #60137 to add support for two-way bindings on dynamically-created components. Example usage:
```typescript
import {createComponent, signal, twoWayBinding} from '@angular/core';
const value = signal('');
createComponent(MyCheckbox, {
bindings: [
twoWayBinding('value', value),
],
});
```
In the example above the value of `MyCheckbox` and the `value` signal will be kept in sync.
PR Close#60342
While still being supported because of ngUpgrade, string tokens are not recommended. Developers should use InjectionTokens or classes as tokens instead.
PR Close#60326
This change moves more logic to the primitives package by pushing
the equal configuration on a reactive node to the signal and
computed creation utilities.
PR Close#60300
Instead of relying on Microsoft's API extractor for `d.ts` bundling,
we are switching to Rollup-based `.d.ts` bundling.
This allows us to support code spliting, even for `.d.ts` files,
allowing for relative imports to be used between entry-points, without
ending up duplicating `.d.ts` definitions in two files. This would otherwise cause
problems with assignability of types.
It also nicely integrates into our existing rollup configuration, and
overall simplifies the `ng_package` rule even further!
Notably `tsup` also uses this rollup plugin, and it seems to work well.
Keep in mind that Microsoft's API extractor is pretty hard to integrate,
caused many problems in the past, and isn't capable of code splitting.
This aligns our d.ts bundling with the .mjs bundling (great alignment).
PR Close#60321
Removes the deprecated `InjectFlags` symbol from the `@angular/core` public API, as well as all the places that accept it. The previous commit includes an automated migration to switch over to the new way of passing in flags.
BREAKING CHANGE:
* `InjectFlags` has been removed.
* `inject` no longer accepts `InjectFlags`.
* `Injector.get` no longer accepts `InjectFlags`.
* `EnvironmentInjector.get` no longer accepts `InjectFlags`.
* `TestBed.get` no longer accepts `InjectFlags`.
* `TestBed.inject` no longer accepts `InjectFlags`.
PR Close#60318
Taygan Caldwell