As of ES2021, JavaScript allows using underscores as separators inside numbers, in order to make them more readable (e.g. `1_000_000` vs `1000000`). TypeScript has had support for separators for a while so these changes expand the template parser to handle them as well.
PR Close#42672
Adds support for shorthand property declarations inside Angular templates. E.g. doing `{foo, bar}` instead of `{foo: foo, bar: bar}`.
Fixes#10277.
PR Close#42421
If an implcit receiver is accessed in a listener inside of an `ng-template`, we generate some extra code in order to ensure that we're assigning to the correct object. The problem is that the logic wasn't covering keyed writes which caused it to write to the wrong object and throw an assertion error at runtime.
These changes expand the logic to cover keyed writes.
Fixes#41267.
PR Close#42603
We currently have two long-standing issues related to how `TestBed` tests are torn down:
1. The dynamically-created test module isn't going to be destroyed, preventing the `ngOnDestroy` hooks on providers from running and keeping the component `style` nodes in the DOM.
2. The test root elements aren't going to be removed from the DOM. Instead, they will be removed whenever another test component is created.
By themselves, these issues are easy to resolve, but given how long they've been around, there are a lot of unit tests out there that depend on the broken behavior.
These changes address the issues by introducing APIs that allow users to opt into the correct test teardown behavior either at the application level via `TestBed.initTestEnvironment` or the test suite level via `TestBed.configureTestingModule`.
At the moment, the new teardown behavior is opt-in, but the idea is that we'll eventually make it opt-out before removing the configuration altogether.
Fixes#18831.
PR Close#42566
For quite a while it is an unspoken convention to add a trailing
new-line files within the Angular repository. This was never enforced
automatically, but has been frequently raised in pull requests through
manual review. This commit sets up a lint rule so that this is
"officially" enforced and doesn't require manual review.
PR Close#42478
Switches the repository to TypeScript 4.3 and the latest
version of tslib. This involves updating the peer dependency
ranges on `typescript` for the compiler CLI and for the Bazel
package. Tests for new TypeScript features have been added to
ensure compatibility with Angular's ngtsc compiler.
PR Close#42022
Currently we support safe property (`a?.b`) and method (`a?.b()`) accesses, but we don't handle safe keyed reads (`a?.[0]`) which is inconsistent. These changes expand the compiler in order to support safe key read expressions as well.
PR Close#41911
We have some internal proxies for all of the Jasmine functions, as well as some other helpers. This code hasn't been touched in more than 5 years, it can lead to confusion and it isn't really necessary since the same can be achieved using Jasmine.
These changes remove most of the code and clean up our existing unit tests.
PR Close#42177
We skip event listeners on non-element host nodes (e.g. `ng-container` or `ng-element`), because they don't map to a DOM node so there's nothing to bind the event to. The problem is that this also prevents listeners bound to global targets from being bound.
These changes add an extra condition to allow for the event to be bound if it has a custom event target resolver.
Fixes#14191.
PR Close#42014
Prior to this change, any inserted `<style>` nodes into shadow dom trees would be retained
in memory, even after the shadow dom tree has been removed. This commit fixes the memory
leak by tracking the inserted `<style>` nodes per host element, such that removal of the
host element also releases the style nodes.
Fixes#36655
PR Close#42005
When there are multiple attributes that are marked for i18n translation,
which contain expression bindings, we were generating i18n update op-codes
that did not accurately map to the correct value to be bound in the lView.
Each attribute's bindings were relative to the start of the lView first
attributes values rather than to their own.
This fix passes the current binding index to `generateBindingUpdateOpCodes()`
when processing i18n attributes to account for this.
Fixes#41869
PR Close#41882
When including a component in a template, the component's host element
is immediately appended as child of the parent node upon creation.
Hence, `hostElement.parentNode` will be a valid reference. However, if
the parent component is being inserted as an embedded view—through
`ngIf` for example—then the parent's node itself will not have been
inserted yet. This means that we cannot properly determine the position
of the transition namespace, as any `containsElement` check will return
false given that the partial DOM tree has not been inserted yet, even
though it will be contained within an existing transition namespace once
the partial tree is attached.
This commit fixes the issue by not just looking at the existence of a
parent node, but rather a more extensive check using the driver's
`containsElement` method.
PR Close#19854
Updates some tests where values related to the `HEADER_OFFSET` are hardcoded, causing them to break when the offset is updated. This comes up once in a while during refactorings and these changes should save us some time in the future.
PR Close#41883
Currently we save a reference to an `LView` on most DOM nodes created by Angular either by saving
the `LView` directly in the `__ngContext__` or by saving the `LContext` which has a reference to
the `LView`. This can be a problem if the DOM node is retained in memory, because the `LView` has
references to all of the child nodes of the view, as well as other internal data structures.
Previously we tried to resolve the issue by clearing the `__ngContext__` when a node is removed
(see https://github.com/angular/angular/pull/36011), but we decided not to proceeed, because it can
slow down destruction due to a megamorphic write.
These changes aim to address the issue while reducing the performance impact by assigning a unique
ID when an `LView` is created and adding it to `__ngContext__`. All active views are tracked in
a map where their unique ID is used as the key. We don't need to worry about leaks within that map,
because `LView`s are an internal data structure and we have complete control over when they are
created and destroyed.
Fixes#41047.
PR Close#41358
`global` property is not available in the browser, previously this was polyfilled through core-js.
(cherry picked from commit 827cf41386dcd7e496e107d6b32c54281bc935f1)
PR Close#41739
This commit refactors the code to replace `loadLContext` with `getLContext` calls. The only difference between these two functions is that the `loadLContext` supports throwing an error in case `LContext` can not be found. The investigation performed in #41525 revealed that throwing while retrieving `LContext` might have undesirable performance implications, so we should avoid that to make sure there are no accidental perf regressions in other parts of code that used `loadLContext`. Moreover, in most of the places the `loadLContext` was already called in a mode that prevented an error from being thrown, so this refactoring should have no effect on the actual behavior.
PR Close#41606
We have a check that determines whether to generate property binding instructions for an `ng-template`. The check looks at whether the tag name is exactly `ng-template`, but the problem is that if the tag is placed in a non-HTML namespace (e.g. `svg`), the tag name will actually be `:namespace:ng-template` and the check will fail.
These changes resolve the issue by looking at the tag name without the namespace.
Fixes#41308.
PR Close#41669
When determining whether to run an animation, the `TransitionAnimationPlayer`
checks to see if a DOM element is attached to the document. This is done by
checking to see if the element is "contained" by the document body node.
Previously, if the element was inside a shadow DOM, the engine would
determine that the element was not attached, even if the shadow DOM's
host was attached to the document. This commit updates the `containsElement()`
method on `AnimationDriver` implementations to also include shadow DOM
elements as being contained if their shadow host element is contained.
Further, when using CSS keyframes to trigger animations, the styling
was always added to the `head` element of the document, even for
animations on elements within a shadow DOM. This meant that those
elements never receive those styles and the animation would not run.
This commit updates the insertion of these styles so that they are added,
to the element's "root node", which is the nearest shadow DOM host, or the
`head` of the document if the element is not in a shadow DOM.
Closes#25672
PR Close#40134
This commit introduces the following optimizations:
1. We return an empty array for text nodes in `getDirectives` because
Angular does not support attaching logic to them. This optimization
improves performance of `getDirectives` significantly because text nodes
often result in expensive calls to `loadLContext` since we can't resolve
it from a parent node.
1. `getDirectives` now calls `loadLContext` with second argument `false`
so it doesn't throw an error. This brings another significant
improvement because prevents the VM from deoptimizing calls.
BREAKING CHANGE:
Previously the `ng.getDirectives` function threw an error in case a
given DOM node had no Angular context associated with it (for example
if a function was called for a DOM element outside of an Angular app).
This behavior was inconsistent with other debugging utilities under `ng`
namespace, which handled this situation without raising an exception.
Now calling the `ng.getDirectives` function for such DOM nodes would
result in an empty array returned from that function.
PR Close#41525
This commit introduces a global debugging method
`ng.getDirectiveMetadata` which returns the metadata for a directive or
component instance.
PR Close#41525
With this change we update several dependencies to avoid Renovate creating a lot of PRs during onboarding. We also remove yarn workspaces as after further analysis these are not needed.
Certain dependencies such as `@octokit/rest`, `remark` and `@babel/*` have not been updated as they require a decent amount of work to update, and it's best to leave them for a seperate PR.
PR Close#41434
This commit refactors the generated code for class metadata in partial
compilation mode. Instead of emitting class metadata into a top-level
`ɵsetClassMetadata` call guarded by `ngDevMode` flags, the class
metadata is now declared using a top-level `ɵɵngDeclareClassMetadata`
call.
PR Close#41200
Fixes an error that will be thrown if `DebugRenderer2.destroyNode` is called with a node that has already been destroyed. The error happened, because we had a non-null assertion, even though the value can be null.
Note that this fix applies only to ViewEngine, because Ivy doesn't provide the `DebugRenderer2`. I decided to resolve it, because it fix is straightforward and this error has been showing up in our logs for a long time now, making actual errors harder to find.
PR Close#41565
This commit adds a base class that contains common logic for all ControlValueAccessors defined in Forms package. This allows to remove duplicated logic from all built-in ControlValueAccessor classes.
PR Close#41225
This commit changes the partial compilation so that it outputs declarations
rather than definitions for injectables.
The JIT compiler and the linker are updated to be able to handle these
new declarations.
PR Close#41316
The other similar interfaces were renamed in https://github.com/angular/angular/pull/41119,
but this one was left since it had existed before Ivy. It looks like the interface was
never actually exposed on npm so it is safe to rename this one too.
PR Close#41316
* We had a usage of `Observable.subscribe` that uses the deprecated signature with 3 arguments. These changes switch to the non-deprecated version that passes in an `Observer`.
* Avoids always creating a `complete` callback since it isn't required.
* We were repeating all of the internal callbacks twice: once for sync and once for async. These changes move them out into variables so that they're more minifier-friendly. The savings aren't huge (~100 bytes minified), but it doesn't add any maintenance effort on our end so I decided to add it.
PR Close#41450
Introduces an **internal**, **experimental** `profiler` function, which
the runtime invokes around user code, including before and after:
- Running the template function of a component
- Executing a lifecycle hook
- Evaluating an output handler
The `profiler` function invokes a callback set with the global
`ng.ɵsetProfiler`. This API is **private** and **experimental** and
could be removed or changed at any time.
This implementation is cheap and available in production. It's cheap
because the `profiler` function is simple, which allows the JiT compiler
to inline it in the callsites. It also doesn't add up much to the
production bundle.
To listen for profiler events:
```ts
ng.ɵsetProfiler((event, ...args) => {
// monitor user code execution
});
```
PR Close#41255
This commit removes a check for the name of the generated factory
function, which is unimportant to test the behaviour of the code.
The name of these functions is generated from the name of the class
being instantiated. In IE11, there is no `function.name` property available
and so there is a shim for it in `third_party/shims_for_IE.js`, which patches
the `Function.property.name` property.
For performance reasons this shim writes the result of the computation
to the prototype of the function. Unfortunately, this means that any class
that extends the patched class will have the same value for `name`.
PR Close#41416
In #41104 the list of used directives was split into two arrays of used
directives and components, but the JIT side was not updated. This commit
fixes the JIT integration by including the list of used components.
Fixes#41318
PR Close#41353
Currently we normalize all CSS property names in the `StylingBuilder` which breaks custom properties, because they're case-sensitive. These changes add a check so that custom properties aren't normalized.
Fixes#41364.
PR Close#41380
Now that other values were removed from `R3ResolvedDependencyType`,
its meaning can now be inferred from the other properties in the
`R3DeclareDependencyMetadata` type. This commit removes this enum
and updates the code to work without it.
PR Close#41231
This instruction was created to work around a problem with injecting a
`ChangeDetectorRef` into a pipe. See #31438. This fix required special
metadata for when the thing being injected was a `ChangeDetectorRef`.
Now this is handled by adding a flag `InjectorFlags.ForPipe` to the
`ɵɵdirectiveInject()` call, which avoids the need to special test_cases
`ChangeDetectorRef` in the generated code.
PR Close#41231
This commit changes the partial compilation so that it outputs declaration
calls rather than compiled factory functions.
The JIT compiler and the linker are updated to be able to handle these
new declarations.
PR Close#41231
With this change we move `XhrFactory` to the root entrypoint of `@angular/commmon`, this is needed so that we can configure `XhrFactory` DI token at a platform level, and not add a dependency between `@angular/platform-browser` and `@angular/common/http`.
Currently, when using `HttpClientModule` in a child module on the server, `ReferenceError: XMLHttpRequest is not defined` is being thrown because the child module has its own Injector and causes `XhrFactory` provider to be configured to use `BrowserXhr`.
Therefore, we should configure the `XhrFactory` at a platform level similar to other Browser specific providers.
BREAKING CHANGE:
`XhrFactory` has been moved from `@angular/common/http` to `@angular/common`.
**Before**
```ts
import {XhrFactory} from '@angular/common/http';
```
**After**
```ts
import {XhrFactory} from '@angular/common';
```
Closes#41311
PR Close#41313
TypeScript 4.2 has changed its emitted syntax for synthetic constructors
when using `downlevelIteration`, which affects ES5 bundles that have
been downleveled from ES2015 bundles. This is typically the case for UMD
bundles in the APF spec, as they are generated by downleveling the
ESM2015 bundle into ES5. The reflection capabilities in the runtime need
to recognize this new form to correctly deal with synthesized
constructors, as otherwise JIT compilation could generate invalid
factory functions.
Fixes#41298
PR Close#41305
The `ɵɵInjectorDef` interface is internal and should not be published publicly
as part of libraries. This commit updates the compiler to render an opaque
type, `ɵɵInjectorDeclaration`, for this instead, which appears in the typings
for compiled libraries.
PR Close#41119
Th `ɵɵFactoryDef` type will appear in published libraries, via their typings
files, to describe what type dependencies a DI factory has. The parameters
on this type are used by tooling such as the Language Service to understand
the DI dependencies of the class being created by the factory.
This commit moves the type to the `public_definitions.ts` file alongside
the other types that have a similar role, and it renames it to `ɵɵFactoryDeclaration`
to align it with the other declaration types such as `ɵɵDirectiveDeclaration`
and so on.
PR Close#41119
These types are only used in the generated typings files to provide
information to the Angular compiler in order that it can compile code
in downstream libraries and applications.
This commit aliases these types to `unknown` to avoid exposing the
previous alias types such as `ɵɵDirectiveDef`, which are internal to
the compiler.
PR Close#41119
Previously presence of both [class] and [className] bindings on an element was treated as compiler error (implemented in 6f203c9575). Later, the situation was improved to actually allow both bindings to co-exist (see a153b61098), however the compiler check was not removed completely. The only situation where the error is thrown at this moment is when static (but with interpolation) and bound `class` attributes are present on an element, for ex.:
```
<div class="{{ one }}" [class]="'two'"></div>
```
In the current situation the error is acually misleading (as it refers to `[className]`).
This commit removes the mentioned compiler check as obsolete and makes the `class` and `style` attribute processing logically the same (the last occurrence is used to compute the value).
PR Close#41254
This commit makes the `RadioControlRegistry` class tree-shakable by adding the `providedIn` property to its
`@Injectable` decorator. Now if the radio buttons are not used in the app (thus no `RadioControlValueAccessor`
directive is initialized), the `RadioControlRegistry` should not be included into application's prod bundle.
PR Close#41126
This commit changes the partial compilation so that it outputs declaration
calls rather than definition calls for NgModules and Injectors.
The JIT compiler and the linker are updated to be able to handle these
new declarations.
PR Close#41080
Currently the `Validators` class contains a number of static methods that represent different validators as well as some helper methods. Since class methods are not tree-shakable, any reference to the `Validator` class retains all of its methods (even if you've used just one).
This commit refactors the code to extract the logic into standalone functions and use these functions in the code instead of referencing them via `Validators` class. That should make the code more tree-shakable. The `Validators` class still retains its structure and calls these standalone methods internally to keep this change backwards-compatible.
PR Close#41189
This commit updates Forms code to avoid direct references to all built-in ControlValueAccessor classes, which
prevents their tree-shaking from production builds. Instead, a new static property is added to all built-in
ControlValueAccessors, which is checked when we need to identify whether a given ControlValueAccessors is a
built-in one.
PR Close#41146
BREAKING CHANGE:
Switching default of `emitDistinctChangesOnlyDefaultValue`
which changes the default behavior and may cause some applications which
rely on the incorrect behavior to fail.
`emitDistinctChangesOnly` flag has also been deprecated and will be
removed in a future major release.
The previous implementation would fire changes `QueryList.changes.subscribe`
whenever the `QueryList` was recomputed. This resulted in an artificially
high number of change notifications, as it is possible that recomputing
`QueryList` results in the same list. When the `QueryList` gets recomputed
is an implementation detail, and it should not be the thing that determines
how often change event should fire.
Unfortunately, fixing the behavior outright caused too many existing
applications to fail. For this reason, Angular considers this fix a
breaking fix and has introduced a flag in `@ContentChildren` and
`@ViewChildren`, that controls the behavior.
```
export class QueryCompWithStrictChangeEmitParent {
@ContentChildren('foo', {
// This option is the new default with this change.
emitDistinctChangesOnly: true,
})
foos!: QueryList<any>;
}
```
For backward compatibility before v12
`emitDistinctChangesOnlyDefaultValue` was set to `false. This change
changes the default to `true`.
PR Close#41121
The `DomAdapter` is present in all Angular apps and its methods aren't tree shakeable.
These changes remove the methods that either aren't being used anymore or were only
used by our own tests. Note that these changes aren't breaking, because the adapter
is an internal API.
The following methods were removed:
* `getProperty` - only used within our own tests.
* `log` - Guaranteed to be defined on `console`.
* `logGroup` and `logGroupEnd` - Only used in one place. It was in the DomAdapter for built-in null checking.
* `logGroupEnd` - Only used in one place. It was placed in the DomAdapter for built in null checking.
* `performanceNow` - Only used in one place that has to be invoked through the browser console.
* `supportsCookies` - Unused.
* `getCookie` - Unused.
* `getLocation` and `getHistory` - Only used in one place which appears to have access to the DOM
already, because it had direct accesses to `window`. Furthermore, even if this was being used
in a non-browser context already, the `DominoAdapter` was set up to throw an error.
The following APIs were changed to be more compact:
* `supportsDOMEvents` - Changed to a readonly property.
* `remove` - No longer returns the removed node.
PR Close#41102
Kristiyan Kostadinov
Paul Gschwendtner
JoostK
mgechev
Pete Bacon Darwin
Alan Agius
Andrew Kushnir
jeripeierSBB
Misko Hevery