The codebase currently contains several `EMPTY_ARRAY` constants,
and they can end up in the bundle of an application.
A recent commit 6fbe219 tipped us off
as it introduced several `noop` occurrences in the golden symbol files.
After investigating with @petebacondarwin,
we decided to remove the duplicated symbols.
This probably shaves only a few bytes,
but this commit removes the duplicated functions,
by always using the one in `core/src/utils/empty`.
PR Close#40587
Previous implementation would fire changes `QueryList.changes.subscribe`
whenever the `QueryList` was recomputed. This resulted in 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 which determines
how often change event should fire.
This change introduces a new `emitDistinctChangesOnly` option for
`ContentChildren` and `ViewChildren`.
```
export class QueryCompWithStrictChangeEmitParent {
@ContentChildren('foo', {
// This option will become the default in the future
emitDistinctChangesOnly: true,
})
foos!: QueryList<any>;
}
```
PR Close#40091
Escape the content of the strings so that it can be safely inserted into a comment node.
The issue is that HTML does not specify any way to escape comment end text inside the comment.
`<!-- The way you close a comment is with "-->". -->`. Above the `"-->"` is meant to be text
not an end to the comment. This can be created programmatically through DOM APIs.
```
div.innerHTML = div.innerHTML
```
One would expect that the above code would be safe to do, but it turns out that because comment
text is not escaped, the comment may contain text which will prematurely close the comment
opening up the application for XSS attack. (In SSR we programmatically create comment nodes which
may contain such text and expect them to be safe.)
This function escapes the comment text by looking for the closing char sequence `-->` and replace
it with `-_-_>` where the `_` is a zero width space `\u200B`. The result is that if a comment
contains `-->` text it will render normally but it will not cause the HTML parser to close the
comment.
PR Close#40136
`ViewRef` and `ApplicationRef` had a circular reference. This change
introduces `ViewRefTracker` which is a subset of `ApplicationRef` for
this purpose.
PR Close#39621
Due to historical reasons `Injector.__NG_ELEMENT_ID__` was set to `-1`.
This changes it to be consistent with other `*Ref.__NG_ELEMENT_ID__`
constructs.
PR Close#39621
Before this refactoring/fix the ICU would store the current selected
index in `TView`. This is incorrect, since if ICU is in `ngFor` it will
cause issues in some circumstances. This refactoring properly moves the
state to `LView`.
closes#37021closes#38144closes#38073
PR Close#39233
Removes `ViewEncapsulation.Native` which has been deprecated for several major versions.
BREAKING CHANGES:
* `ViewEncapsulation.Native` has been removed. Use `ViewEncapsulation.ShadowDom` instead. Existing
usages will be updated automatically by `ng update`.
PR Close#38882
Remove `looseIdentical` implementation and instead use the ES2015 `Object.is` in its place.
They behave exactly the same way except for `+0`/`-0`.
`looseIdentical(+0, -0)` => `true`
`Object.is(+0, -0)` => `false`
Other than the difference noted above, this is not be a breaking change because:
1. `looseIdentical` is a private API
2. ES2015 is listed as a mandatory polyfill in the [browser support
guide](https://angular.io/guide/browser-support#mandatory-polyfills)
3. Also note that `Ivy` already uses `Object.is` in `bindingUpdated`.
PR Close#37191
Removes the `Renderer` and related symbols which have been deprecated since version 4.
BREAKING CHANGES:
* `Renderer` has been removed. Use `Renderer2` instead.
* `RenderComponentType` has been removed. Use `RendererType2` instead.
* `RootRenderer` has been removed. Use `RendererFactory2` instead.
PR Close#33019
Extend the vocabulary of the `providedIn` to also include `'platform'` and `'any'`` scope.
```
@Injectable({
providedId: 'platform', // tree shakable injector for platform injector
})
class MyService {...}
```
PR Close#32154
In VE the `Sanitizer` is always available in `BrowserModule` because the VE retrieves it using injection.
In Ivy the injection is optional and we have instructions instead of component definition arrays. The implication of this is that in Ivy the instructions can pull in the sanitizer only when they are working with a property which is known to be unsafe. Because the Injection is optional this works even if no Sanitizer is present. So in Ivy we first use the sanitizer which is pulled in by the instruction, unless one is available through the `Injector` then we use that one instead.
This PR does few things:
1) It makes `Sanitizer` optional in Ivy.
2) It makes `DomSanitizer` tree shakable.
3) It aligns the semantics of Ivy `Sanitizer` with that of the Ivy sanitization rules.
4) It refactors `DomSanitizer` to use same functions as Ivy sanitization for consistency.
PR Close#31934
Currently the `DebugElement.listeners` array are retained after the node is destroyed. This means that they'll continue to fire through `triggerEventHandler` and can cause memory leaks. This has already been fixed in Ivy, but these changes fix it in ViewEngine for consistency.
PR Close#31820
There is an encoding issue with using delta `Δ`, where the browser will attempt to detect the file encoding if the character set is not explicitly declared on a `<script/>` tag, and Chrome will find the `Δ` character and decide it is window-1252 encoding, which misinterprets the `Δ` character to be some other character that is not a valid JS identifier character
So back to the frog eyes we go.
```
__
/ɵɵ\
( -- ) - I am ineffable. I am forever.
_/ \_
/ \ / \
== == ==
```
PR Close#30546
Ivy uses R3Injector, but we are currently pulling in both the StaticInjector
(View Engine injector) and the R3Injector when running with Ivy. This commit
adds an ivy switch so calling Injector.create() pulls in the correct
implementation of the injector depending on whether you are using VE or Ivy.
This saves us about 3KB in the bundle.
PR Close#30219
With dts bundles, `core.d.ts` will include an `EventListener` class as it's used in https://github.com/angular/angular/blob/303eae918d997070a36b523ddc97e018f622c258/packages/core/src/debug/debug_node.ts#L32
This will conflict with the DOM EventListener, as anything in `core.d.ts` which is using the DOM EventListener will fallback in using the one defined in the same module and hence build will fail because their implementation is different.
With this change, we rename the local `EventListener` to `DebugEventListener`, the later one is non exported.
Fixes#29806
PR Close#29809
The `Δ` caused issue with other infrastructure, and we are temporarily
changing it to `ɵɵ`.
This commit also patches ts_api_guardian_test and AIO to understand `ɵɵ`.
PR Close#29850
Prior to this change, any provider that was independently resolved using
its InjectableDef would not be considered when destroying the module it
was requested from. This commit provides a fix for this issue by storing
the resolved provider in the module's list of provider definitions.
Fixes#28927
PR Close#28943
When testing whether `value` is an object, use the ideal sequence of
strictly not equal to `null` followed by `typeof value === 'object'`
consistently. Specifically there's no point in using double equal with
`null` since `undefined` is ruled out by the `typeof` check.
Also avoid the unnecessary ToBoolean check on `value.ngOnDestroy` in
`hasOnDestroy()`, since the `typeof value.ngOnDestroy === 'function'`
will only let closures pass and all closures are truish (with the
notable exception of `document.all`, but that shouldn't be relevant
for the `ngOnDestroy` hook).
PR Close#28400
Misko Hevery
cexbrayat
Kristiyan Kostadinov
Andrew Scott
Joey Perrott
Igor Minar
Danny Skoog
Christopher Dahm
Pawel Kozlowski
Ben Lesh
Kara Erickson
Alan Agius
Alex Rickabaugh
JoostK
Benedikt Meurer