Now that we've replaced `ngBaseDef` with an abstract directive definition, there are a lot more cases where we generate a directive definition without a selector. These changes make it so that we don't generate the `selectors` array if it's going to be empty.
PR Close#33431
Prior to this commit, i18n logic which ensures that elements removed in a translation are also removed in DOM, didn't take into account the fact that elements may have local refs. As a result, remove operation failed, since there is no corresponding tNode found. This commit updates the logic to skip all local refs while going though the list of nodes to ensure that DOM matches elements present in translation.
PR Close#33415
`bindingIndex` stores the current location of the bindings in the
template function. Because it used to be stored in `LView` that `LView`
was not reentrant. This could happen if a binding was a getter and had
a side-effect of calling `detectChanges()`.
By moving the `bindingIndex` to `LFrame` where all of the global state
is kept in reentrant way we correct the issue.
PR Close#33235
Removes `ngBaseDef` from the compiler and any runtime code that was still referring to it. In the cases where we'd previously generate a base def we now generate a definition for an abstract directive.
PR Close#33264
For abstract directives, i.e. directives without a selector, it may
happen that their constructor is called explicitly from a subclass,
hence its parameters are not required to be valid for Angular's DI
purposes. Prior to this commit however, having an abstract directive
with a constructor that has parameters that are not eligible for
Angular's DI would produce a compilation error.
A similar scenario may occur for `@Injectable`s, where an explicit
`use*` definition allows for the constructor to be irrelevant. For
example, the situation where `useFactory` is specified allows for the
constructor to be called explicitly with any value, so its constructor
parameters are not required to be valid. For `@Injectable`s this is
handled by generating a DI factory function that throws.
This commit implements the same solution for abstract directives, such
that a compilation error is avoided while still producing an error at
runtime if the type is instantiated implicitly by Angular's DI
mechanism.
Fixes#32981
PR Close#32987
This commit adds CopyDefinitionFeature, which supports the case where an
entire decorator (@Component or @Directive) is inherited from parent to
child.
The existing inheritance feature, InheritDefinitionFeature, supports merging
of parent and child definitions when both were originally present. This
merges things like inputs, outputs, host bindings, etc.
CopyDefinitionFeature, on the other hand, compensates for a definition that
was missing entirely on the child class, by copying fields that aren't
ordinarily inherited (like the template function itself).
This feature is intended to only be used as part of ngcc code generation.
PR Close#33362
This patch ensures that the `[style]` and `[class]` based bindings
are directly applied to an element's style and className attributes.
This patch optimizes the algorithm so that it...
- Doesn't construct an update an instance of `StylingMapArray` for
`[style]` and `[class]` bindings
- Doesn't apply `[style]` and `[class]` based entries using
`classList` and `style` (direct attributes are used instead)
- Doesn't split or iterate over all string-based tokens in a
string value obtained from a `[class]` binding.
This patch speeds up the following cases:
- `<div [class]>` and `<div class="..." [class]>`
- `<div [style]>` and `<div style="..." [style]>`
The overall speec increase is by over 5x.
PR Close#33336
`LFrame` stores information specifice to the current `LView` As the code
enters and leaves `LView`s we use `enterView()` and `leaveView()`
respectively to build a a stack of `LFrame`s. This allows us to easily
restore the previous `LView` instruction state.
PR Close#33178
Recently it was made possible to have a directive without selector,
which are referred to as abstract directives. Such directives should not
be registered in an NgModule, but can still contain decorators for
inputs, outputs, queries, etc. The information from these decorators and
the `@Directive()` decorator itself needs to be registered with the
central `MetadataRegistry` so that other areas of the compiler can
request information about a given directive, an example of which is the
template type checker that needs to know about the inputs and outputs of
directives.
Prior to this change, however, abstract directives would only register
themselves with the `MetadataRegistry` as being an abstract directive,
without all of its other metadata like inputs and outputs. This meant
that the template type checker was unable to resolve the inputs and
outputs of these abstract directives, therefore failing to check them
correctly. The typical error would be that some property does not exist
on a DOM element, whereas said property should have been bound to the
abstract directive's input.
This commit fixes the problem by always registering the metadata of a
directive or component with the `MetadataRegistry`. Tests have been
added to ensure abstract directives are handled correctly in the
template type checker, together with tests to verify the form of
abstract directives in declaration files.
Fixes#30080
PR Close#33131
In the post-$localize world the current locale value is defined by setting
`$localize.locale` which is then read at runtime by Angular in the provider
for the `LOCALE_ID` token and also passed to the ivy machinery via`setLocaleId()`.
The $localize compile-time inlining tooling can replace occurrences of
`$localize.locale` with a string literal, similar to how translations
are inlined.
// FW-1639
See https://github.com/angular/angular-cli/issues/15896
PR Close#33314
change the existing implementation from using
```
string.split(/\s+/);
```
to a char scan which performers the same thing.
The reason why `split(/\s+/)` is slow is that:
- `/\s+/` allocates new `RegExp` every time this code executes.
- `RegExp` scans are a lot more expensive because they are more powerful.
PR Close#33326
With Ivy the `entryComponents` array isn't necessary anymore. These changes mark it as deprecated so that it can be removed in a future version.
PR Close#33205
Prior to this fix if a map-based class or style binding wrote
its values onto an elemenent, the internal styling context would
not register the binding if the initial value as a `NO_CHANGE`
value. This situation occurs if a directive takes control of the
`class` or `style` input values and then returns a `NO_CHANGE` value
if the initial value is empty.
This patch ensures that all bindings are always registered with the
`TStylingContext` data-structure even if their initial value is
an instance of `NO_CHANGE`.
PR Close#33236
Prior to this fix, all style/class bindings (e.g. `[style]` and
`[class.foo]`) would quietly update a binding value if and when the
current binding value changes during checkNoChanges.
With this patch, all styling instructions will properly check to see
if the value has changed during the second pass of detectChanges()
if checkNoChanges is active.
PR Close#33103
LocaleID defs are not considered public API, so the property
that contains them should be prefixed with Angular's marker
for "private" ('ɵ') to discourage apps from relying on def
APIs directly.
This commit adds the prefix and shortens the name from
ngLocaleIdDef to loc. This is because property names
cannot be minified by Uglify without turning on property
mangling (which most apps have turned off) and are thus
size-sensitive.
PR Close#33212
Turns out that writing to global state is more expensive than writing to
a property on an object.
Slower:
````
let count = 0;
function increment() {
count++;
}
```
Faster:
````
const state = {
count: 0
};
function increment() {
state.count++;
}
```
This change moves all of the instruction state into a single state object.
`noop_change_detection` benchmark
Pre refactoring: 16.7 us
Post refactoring: 14.523 us (-13.3%)
PR Close#33093
Prior to this commit, all `className` inputs were not set because the runtime code assumed that the `classMap` instruction is only generated for `[class]` bindings. However the `[className]` binding also produces the same `classMap`, thus the code needs to distinguish between `class` and `className`. This commit adds extra logic to select the right input name and also throws an error in case `[class]` and `[className]` bindings are used on the same element simultaneously.
PR Close#33188
This patch introduces the `printTable()` and `printSources()`
methods to `DebugStylingContext` which can be used via the
`window.ng.getDebugNode` helpers when debugging an application.
PR Close#33179
Injectable defs are not considered public API, so the property
that contains them should be prefixed with Angular's marker
for "private" ('ɵ') to discourage apps from relying on def
APIs directly.
This commit adds the prefix and shortens the name from
ngInjectableDef to "prov" (for "provider", since injector defs
are known as "inj"). This is because property names cannot
be minified by Uglify without turning on property mangling
(which most apps have turned off) and are thus size-sensitive.
PR Close#33151
Injector defs are not considered public API, so the property
that contains them should be prefixed with Angular's marker
for "private" ('ɵ') to discourage apps from relying on def
APIs directly.
This commit adds the prefix and shortens the name from
ngInjectorDef to inj. This is because property names
cannot be minified by Uglify without turning on property
mangling (which most apps have turned off) and are thus
size-sensitive.
PR Close#33151
This change assures that data structures related to initial inputs
(ones set from static attributes) are created only once (during the
first template pass) and no additional runtime checks are done for
subsequent passes.
Additionally this commit changes the data structure used by initial inputs
on TNode - previously initial inputs for a directive were stored at the
directive index in LView. This meant that an array holding initial inputs
was relativelly big and had many null elements (as placeholders for elements,
directives, injector etc.). After the change we only create an array of a size
equal to a number of directives matched on a given TNode.
For the `directive_instantiate` benchmark it boils to allocating a 1-element
array vs. 100-element array previously.
PR Close#33195
Prior to this commit, Ivy runtime asserted that a given element is an instance of a DOM node. These asserts may not be correct in case custom renderer is used, which operates objects with a shape different than DOM nodes. This commit updates the code to avoid the mentioned checks in case procedural renderer is used.
PR Close#33156
Prior to this patch, if a map-class binding is applied directly then
that value will be incorrectly provided a sanitizer even if there is no
sanitization present for an element.
PR Close#33154
Module defs are not considered public API, so the property
that contains them should be prefixed with Angular's marker
for "private" ('ɵ') to discourage apps from relying on def
APIs directly.
This commit adds the prefix and shortens the name from
ngModuleDef to mod. This is because property names
cannot be minified by Uglify without turning on property
mangling (which most apps have turned off) and are thus
size-sensitive.
PR Close#33142
Pipe defs are not considered public API, so the property
that contains them should be prefixed with Angular's marker
for "private" ('ɵ') to discourage apps from relying on def
APIs directly.
This commit adds the prefix and shortens the name from
ngPipeDef to pipe. This is because property names
cannot be minified by Uglify without turning on property
mangling (which most apps have turned off) and are thus
size-sensitive.
PR Close#33142
Factory defs are not considered public API, so the property
that contains them should be prefixed with Angular's marker
for "private" ('ɵ') to discourage apps from relying on def
APIs directly.
This commit adds the prefix and shortens the name from
ngFactoryDef to fac. This is because property names
cannot be minified by Uglify without turning on property
mangling (which most apps have turned off) and are thus
size-sensitive.
Note that the other "defs" (ngPipeDef, etc) will be
prefixed and shortened in follow-up PRs, in an attempt to
limit how large and conflict-y this change is.
PR Close#33116
Directive defs are not considered public API, so the property
that contains them should be prefixed with Angular's marker
for "private" ('ɵ') to discourage apps from relying on def
APIs directly.
This commit adds the prefix and shortens the name from
ngDirectiveDef to dir. This is because property names
cannot be minified by Uglify without turning on property
mangling (which most apps have turned off) and are thus
size-sensitive.
Note that the other "defs" (ngFactoryDef, etc) will be
prefixed and shortened in follow-up PRs, in an attempt to
limit how large and conflict-y this change is.
PR Close#33110
Component defs are not considered public API, so the property
that contains them should be prefixed with Angular's marker
for "private" ('ɵ') to discourage apps from relying on def
APIs directly.
This commit adds the prefix and shortens the name from
`ngComponentDef` to `cmp`. This is because property names
cannot be minified by Uglify without turning on property
mangling (which most apps have turned off) and are thus
size-sensitive.
Note that the other "defs" (ngDirectiveDef, etc) will be
prefixed and shortened in follow-up PRs, in an attempt to
limit how large and conflict-y this change is.
PR Close#33088
Based on the results of the `directive_instantiate` executing host
bindings logic (in creation mode) account for ~23% of time spent in
the directive instantiation, even if a directive doesn't have host
bindings! This is clearly wastful hence a new flag.
PR Close#33102
This patch enables a styling debug instance (which is apart of the
`debugNode.styles` or `debugNode.classes` data structures) to expose
its context value so that it can be easily debugged.
PR Close#32856
Prior to this fix, whenever a style or class binding is present, the
binding application process would require an instance of `TStylingContext`
to be built regardless of whether or not any binding resolution is needed
(just so that it knows whether or not there are any collisions).
This check is, however, unnecessary because if (and only if) there
are directives present on the element then are collisions possible.
This patch removes the need for style/class bindings to register
themselves on to a `TStylingContext` if there are no directives and
present on an element. This means that all map and prop-based
style/class bindings are applied as soon as bindings are updated on
an element.
PR Close#32919
We used to have a custom version of the NodeInjectorFactory check that was
supposed to be faster to the direct usage of the `instanceof` operator. This
might have been the case in the past but the recent benchmark shows that using
`instanceof` speeds up the `directive_instantiate` by ~10%
(from time getting from ~340ms down to ~305ms).
PR Close#33082
Currently Ivy stores the element attributes into an array above the component def and passes it into the relevant instructions, however the problem is that upon minification the array will get a unique name which won't compress very well. These changes move the attributes array into the component def and pass in the index into the instructions instead.
Before:
```
const _c0 = ['foo', 'bar'];
SomeComp.ngComponentDef = defineComponent({
template: function() {
element(0, 'div', _c0);
}
});
```
After:
```
SomeComp.ngComponentDef = defineComponent({
consts: [['foo', 'bar']],
template: function() {
element(0, 'div', 0);
}
});
```
A couple of cases that this PR doesn't handle:
* Template references are still in a separate array.
* i18n attributes are still in a separate array.
PR Close#32798
Accessing a string's character at index allocates a new, single character string.
A better (faster) check is to use `charCodeAt` that doesn't trigger allocation.
This simple change speeds up the element_text_create benchmark by ~7%.
PR Close#32997
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
Currently the `ngForOf` input accepts `null` or `undefined` as valid
values. Although when using strict template input type checking
(which will be supported by `ngtsc`), passing `null` or `undefined`
with strict null checks enabled causes a type check failure because
the type for the `ngForOf` input becomes too strict if strict null checks
are enabled. The type of the input needs to be expanded to also accept
`null` or `undefined` to behave consistently regardless of the
`strictNullChecks` flag.
This is necessary because whenever strict input type checking is enabled
by default, most of the Angular projects that use `*ngFor` with the async pipe
will either need to disable template type checking or strict null checks
because the `async` pipe returns `null` if the observable hasn't been
emitted yet.
See for example how this affects the `angular/components` repository and
how much bloat the workaround involves: https://github.com/angular/components/pull/16373/files#r296942696.
PR Close#31371
Prior to this change, ng-reflect properties were not created in case an attribute was marked as translatable (for ex. `i18n-title`). This commit adds the logic to generate ng-reflect for such cases.
PR Close#32989
Prior to this commit, the `ng` was exposed in global namespace, which turned out to be problematic when minifying code with Closure, since it sometimes clobber our `ng` global. This commit aligns Ivy debugging tools behavior with existing logic in "platform-browser" package (packages/platform-browser/src/dom/util.ts#L31) by avoiding `ng` in global namespace when Closure Compiler is used.
PR Close#33010
Followup to #32720 that removed the logic that statically determines whether a query is dynamic.
This updates the docs to reflect that, and mentions that the flag now defaults to false.
PR Close#32993
This is a re-submit of #32686.
Switches back to having the static flag be optional on ViewChild and ContentChild queries, in preparation for changing its default value.
PR Close#32986
This PR updates Angular to compile with TypeScript 3.6 while retaining
compatibility with TS3.5. We achieve this by inserting several `as any`
casts for compatiblity around `ts.CompilerHost` APIs.
PR Close#32908
With #31953 we moved the factories for components, directives and pipes into a new field called `ngFactoryDef`, however I decided not to do it for injectables, because they needed some extra logic. These changes set up the `ngFactoryDef` for injectables as well.
For reference, the extra logic mentioned above is that for injectables we have two code paths:
1. For injectables that don't configure how they should be instantiated, we create a `factory` that proxies to `ngFactoryDef`:
```
// Source
@Injectable()
class Service {}
// Output
class Service {
static ngInjectableDef = defineInjectable({
factory: () => Service.ngFactoryFn(),
});
static ngFactoryFn: (t) => new (t || Service)();
}
```
2. For injectables that do configure how they're created, we keep the `ngFactoryDef` and generate the factory based on the metadata:
```
// Source
@Injectable({
useValue: DEFAULT_IMPL,
})
class Service {}
// Output
export class Service {
static ngInjectableDef = defineInjectable({
factory: () => DEFAULT_IMPL,
});
static ngFactoryFn: (t) => new (t || Service)();
}
```
PR Close#32433
Switches back to having the `static` flag be optional on `ViewChild` and `ContentChild` queries, in preparation for changing its default value.
PR Close#32686
There are a couple scenarios that are problematic and need special
handling:
1. A user has a custom implementation of lazy-loaded modules, sets some
provider overrides, then compiles the module so it can be loaded. In a
follow-up test, the user sets different overrides for the module and
then compiles. This is problematic because we need to be sure the module
registered in the first test is not used, so we need to clear it out of
the modules list in `ng_module_factory_registration`.
2. A user has a similar lazy-loaded module factory implementation but
relies on the module being registered automatically. This can happen,
for example, as a side effect of importing the ngfactory file.
PR Close#32944
Child component refresh must happen before executing the ViewQueryFn because
child components could insert a template from the host that contains the result
of the ViewQuery function (see related test added in this PR).
PR Close#32922
This patch changes the Ivy `DebugElement` code to always read style and
class values directly from the native element instead of reading them
through the styling contexts. The reason for this change is because Ivy
does not make use of a debug renderer and will therefore not have access
to any classes/styles applied directly through the renderer (unless it
reads the values directly from the element).
PR Close#32842
This patch fixes a bug where the map-based cursor moves too far and
skips intermediate values when the correct combination of single-prop
bindings and map-based bindings are used together.
PR Close#32774
This patch introduces the `printTable()` and `printSources()`
methods to `DebugStylingContext` which can be used via the
`window.ng.getDebugNode` helpers when debugging an application.
PR Close#32753
This patch enables a styling debug instance (which is apart of the
`debugNode.styles` or `debugNode.classes` data structures) to expose
its context value so that it can be easily debugged.
PR Close#32753
Prior to this patch the `window.ng.getDebugNode` method would fail to
return the debug information for an element that is a host element to
a component.
PR Close#32780
Before this refactoring native node `classList` / `style` properties were
read even if not used. The reason for this was desire to avoid code duplication
between procedural and non-procedural renderers. Unfortunatelly for the case
which will be used by most users (a procedura renderer) the `classList` / `style`
properties were read twice, making the `setStyle` \ `setClass` functions the
most expensive ones (self time) in several benchmarks (large table, expanding
rows).
This refactoring adds a bit of code duplication in order to get better
runtime performance. The code duplication will be removed when we drop
checks for a procedural renderer.
PR Close#32716
Prior to this patch if any backwards-compatible Angular code was using
Ivy then the built-in `window.ng` debug utilies would not be exposed.
PR Close#32725
Prior to this patch, each time `advance()` would run (or when a
templateFn or hostBindings code exits) then the core change detection
code would check to see whether the styling data needs to be reset. This
patch removes that functionality and places everything inside of the
scheduled styling exit function. This means that each time one or more
styling bindings run (even if the value hasn't changed) then an exit
function will be scheduled and that will do all the cleanup.
PR Close#32591
This patch is a final major refactor in styling Angular.
This PR includes three main fixes:
All temporary state taht is persisted between template style/class application
and style/class application in host bindings is now removed.
Removes the styling() and stylingApply() instructions.
Introduces a "direct apply" mode that is used apply prop-based
style/class in the event that there are no map-based bindings as
well as property collisions.
PR Close#32259
PR Close#32591
Currently all property instructions eventually call into `elementPropertyInternal` which in turn calls to `getLView`, however all of the instructions already have access to the LView. These changes switch to passing in the LView as a parameter.
PR Close#32681
This is a refactoring that moves the source code around to provide a better
platform for adding the compile-time inlining.
1. Move the global side-effect import from the primary entry-point to a
secondary entry-point @angular/localize/init.
This has two benefits: first it allows the top level entry-point to
contain tree-shakable shareable code; second it gives the side-effect
import more of an "action" oriented name, which indicates that importing
it does something tangible
2. Move all the source code into the top src folder, and import the localize
related functions into the localize/init/index.ts entry-point.
This allows the different parts of the package to share code without
a proliferation of secondary entry-points (i.e. localize/utils).
3. Avoid publicly exporting any utilities at this time - the only public
API at this point are the global `$localize` function and the two runtime
helpers `loadTranslations()` and `clearTranslations()`.
This does not mean that we will not expose additional helpers for 3rd
party tooling in the future, but it avoid us preemptively exposing
something that we might want to change in the near future.
Notes:
It is not possible to have the `$localize` code in the same Bazel package
as the rest of the code. If we did this, then the bundled `@angular/localize/init`
entry-point code contains all of the helper code, even though most of it is not used.
Equally it is not possible to have the `$localize` types (i.e. `LocalizeFn`
and `TranslateFn`) defined in the `@angular/localize/init` entry-point because
these types are needed for the runtime code, which is inside the primary
entry-point. Importing them from `@angular/localize/init` would run the
side-effect.
The solution is to have a Bazel sub-package at `//packages/localize/src/localize`
which contains these types and the `$localize` function implementation.
The primary `//packages/localize` entry-point imports the types without
any side-effect.
The secondary `//packages/localize/init` entry-point imports the `$localize`
function and attaches it to the global scope as a side-effect, without
bringing with it all the other utility functions.
BREAKING CHANGES:
The entry-points have changed:
* To attach the `$localize` function to the global scope import from
`@angular/localize/init`. Previously it was `@angular/localize`.
* To access the `loadTranslations()` and `clearTranslations()` functions,
import from `@angular/localize`. Previously it was `@angular/localize/run_time`.
PR Close#32488
This perf-focused refactoring moves the TNode's input / output initialization
logic to the first template pass - close to the place where directives are
matched and resolved.
This code change makes it possible to update-mode checks for both property
bindings and listeners registration.
PR Close#32608
All of the `pipeBind` instructions call into `isPure` and `unwrapValue` which in turn call `getLView` internally. These internal calls are redundant, because we already have the `LView` from the `load` calls just before it.
PR Close#32633
Before this refactoring we had 2 utility functions to check if a given
TNode has matching directives. This PR leaves just one such function
(one that does less memory read).
PR Close#32495
While determining a property name to bind to we were checking a mapping object
resulting in the megamorphic read. Replacing such read with a series of if checks
speeds up rproprty update benchmark ~30% (~1400ms down to ~1000ms).
PR Close#32574
This patch is a final major refactor in styling Angular.
This PR includes three main fixes:
All temporary state taht is persisted between template style/class application
and style/class application in host bindings is now removed.
Removes the styling() and stylingApply() instructions.
Introduces a "direct apply" mode that is used apply prop-based
style/class in the event that there are no map-based bindings as
well as property collisions.
PR Close#32259
PR Close#32596
This patch is a final major refactor in styling Angular.
This PR includes three main fixes:
All temporary state taht is persisted between template style/class application
and style/class application in host bindings is now removed.
Removes the styling() and stylingApply() instructions.
Introduces a "direct apply" mode that is used apply prop-based
style/class in the event that there are no map-based bindings as
well as property collisions.
PR Close#32259
Prior to this commit, a directive with a selector `selector=".Titledir"` would not match an element like `div class="titleDir"` in Ivy whereas it would in VE. The same issue was present for `selector="[title=Titledir]` and `title="titleDir"`. This fixes the Ivy behavior by changing the matching algorithm to use lowercased values.
Note that some `render3` tests needed to be changed to reflect that the compiler generates lowercase selectors. These tests are in the process to be migrated to `acceptance` to use `TestBed` in another PR anyway.
PR Close#32548
Prior to this commit, the `previousOrParentTNode` was set to null after performing all operations within `refreshView` function. It's causing problems in more complex scenarios, for example when change detection is triggered during DI (see test added as a part of this commit). As a result, global state might be corrupted. This commit captures current value of `previousOrParentTNode` and restores it after `refreshView` call.
PR Close#32521
Replaces the `select` instruction with a new one called `advance`. Instead of the jumping to a specific index, the new instruction goes forward X amount of elements. The advantage of doing this is that it should generate code the compresses better.
PR Close#32516
Logs a warning instead of throwing when running into a binding to an unknown property in JIT mode. Since we aren't using a schema for the runtime validation anymore, this allows us to support browsers where properties are unsupported.
PR Close#32463
Prior to this commit, listeners order was not preserved in case we coalesce them to avoid triggering unnecessary change detection cycles. For performance reasons we were attaching listeners to existing events at head (always using first listener as an anchor), to avoid going through the list, thus breaking the order in which listeners are registered. In some scenarios this order might be important (for example with `ngModelChange` and `input` listeners), so this commit updates the logic to put new listeners at the end of the list. In order to avoid performance implications, we keep a pointer to the last listener in the list, so adding a new listener takes constant amount of time.
PR Close#32484
We need to be clearer to developers who upgrade to v9 (next) and get this
error, why they have a problem and what they have to do about it.
Once we have a better CLI schematics story, where this import will be
included by default in new applications and a CLI migration will add it
when upgrading apps to v9, we could simplify or remove this error message.
PR Close#32491
Fixes an issue where Ivy incorrectly inserts items in the beginning of an `ngFor`, if the `ngFor` is set on an `ng-container`. The issue comes from the fact that we choose the `ng-container` comment node as the anchor point before which to insert the content, however the node might be after any of the nodes inside the container. These changes switch to picking out the first node inside of the container instead.
PR Close#32324
Historically bind() used to be a separate instruction. With a series of
refactoring it became a utility function but after recent code changes
it does not provide any valuable abstraction / help. On the contrary -
it can be seen as a performance problem (forces unnecessary comparison to
`NO_CHANGE` during change detection).
PR Close#32489
Prior to this fix if a `NO_CHANGE` value was assigned to a binding, or
an interpolation value rendererd a `NO_CHANGE` value, then the presence
of that value would cause the internal counter index values to not
increment properly. This patch ensures that this doesn't happen and
that the counter/bitmask values update accordingly.
PR Close#32143
PR #32154 introduced `platform` and `any` for `providedIn` and the doc has a minor typo.
Also a test name was not changed accordingly to the refactoring done.
PR Close#32410
Since property binding metadata storage is guarded with the ngDevMode now
and several instructions were merged together, we can simplify the way we
store and read property binding metadata.
PR Close#32457
This commit changes the Angular compiler (ivy-only) to generate `$localize`
tagged strings for component templates that use `i18n` attributes.
BREAKING CHANGE
Since `$localize` is a global function, it must be included in any applications
that use i18n. This is achieved by importing the `@angular/localize` package
into an appropriate bundle, where it will be executed before the renderer
needs to call `$localize`. For CLI based projects, this is best done in
the `polyfills.ts` file.
```ts
import '@angular/localize';
```
For non-CLI applications this could be added as a script to the index.html
file or another suitable script file.
PR Close#31609
DebugElement.query also searches elements that may have been created
outside of Angular (ex: with `document.appendChild`). The current
behavior attempts to get the LContext of these nodes but throws an error
because the LContext does not exist.
PR Close#32361
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
TestBed.get is not type safe, fixing it would be a massive breaking
change. The Angular team has proposed replacing it with TestBed.inject
and deprecate TestBed.get.
Deprecation from TestBed.get will come as a separate commit.
Issue #26491Fixes#29905
BREAKING CHANGE: Injector.get now accepts abstract classes to return
type-safe values. Previous implementation returned `any` through the
deprecated implementation.
PR Close#32200
Reworks the compiler to output the factories for directives, components and pipes under a new static field called `ngFactoryFn`, instead of the usual `factory` property in their respective defs. This should eventually allow us to inject any kind of decorated class (e.g. a pipe).
**Note:** these changes are the first part of the refactor and they don't include injectables. I decided to leave injectables for a follow-up PR, because there's some more cases we need to handle when it comes to their factories. Furthermore, directives, components and pipes make up most of the compiler output tests that need to be refactored and it'll make follow-up PRs easier to review if the tests are cleaned up now.
This is part of the larger refactor for FW-1468.
PR Close#31953
Binding metadata are only needed:
- for property bindings;
- when TestBed tests are being run.
This commit guards binding metadata storage with the ngDevMode flag
which saves ~6% of a proerty binding processing time in the production
mode (and reduces bundle size).
PR Close#32317
After a series of recent refactorings `enterView` and `leaveView` became
identical. This PR merges both into one concept of view selectio (similar
to a node selection). This reduces number of concepts and code size.
PR Close#32263
This commit removes all the (duplicated) logic of setting lView[BINDING_INDEX]
from `enterView`. `enterView` is on the critcal path perf-wise so we should
avoid having any logic in there and minimise memory read / write.
This simple refactoring in this PR reduces time spent in noop change detection
by ~12% (from ~800ms down to ~700ms on a local machine where measurements were
taken).
PR Close#32263
Prior to this change, the `BINDING_INDEX` of a given lView was reset after processing a template. However change detection can be triggered as a result of View queries processing, thus leading to subsequent `refreshView` call (and executing a template), which in turn operates with the binding index that is not reset after the previous `refreshView` call. This commit updates the logic to reset binding index before we execute a template, so binding index is correct for instructions inside template function.
PR Close#32201
This commit drops our custom, change-detection specific, equality comparison util
in favour of the standard Object.is which has desired semantics.
There are multiple advantages of this approach:
- less code to maintain on our end;
- avoid NaN checks if both values are equal;
- re-write NaN checks so we don't trigger V8 deoptimizations.
PR Close#32212
Angular hooks come after 2 flavours:
- init hooks (OnInit, AfterContentInit, AfterViewInit);
- check hooks (OnChanges, DoChanges, AfterContentChecked, AfterViewChecked).
We need to do more processing for init hooks to ensure that those hooks
are run once and only once for a given directive (even in case of errors).
As soon as all init hooks execute to completion we are only left with the
checks to execute.
It turns out that keeping track of the remaining init hooks to execute is
rather expensive (multiple LView flags reads, writes and checks). But we can
observe that non of this tracking is needed as soon as all init hooks are
completed.
This PR takes advantage of the above observations and splits hooks processing
functions into:
- init-specific (slower but less common);
- check-specific (faster and more common).
NOTE: there is code duplication in this PR and it is left like this intentinally:
hand-inlining this perf-critical code makes the view refresh process substentially
faster.
PR Close#32131
TypeScript downlevels `for-of` loops for ES5 targets. As a result, generated output contains extra code, including a try-catch block, which has code size and performance implications. This is especially important for runtime code where we want to keep it as small as possible. This commit changes `for-of` loops in runtime code to regular `for` loops.
PR Close#32157
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
In Angular today, the following pattern works:
```typescript
export class BaseDir {
constructor(@Inject(ViewContainerRef) protected vcr: ViewContainerRef) {}
}
@Directive({
selector: '[child]',
})
export class ChildDir extends BaseDir {
// constructor inherited from BaseDir
}
```
A decorated child class can inherit a constructor from an undecorated base
class, so long as the base class has metadata of its own (for JIT mode).
This pattern works regardless of metadata in AOT.
In Angular Ivy, this pattern does not work: without the @Directive
annotation identifying the base class as a directive, information about its
constructor parameters will not be captured by the Ivy compiler. This is a
result of Ivy's locality principle, which is the basis behind a number of
compilation optimizations.
As a solution, @Directive() without a selector will be interpreted as a
"directive base class" annotation. Such a directive cannot be declared in an
NgModule, but can be inherited from. To implement this, a few changes are
made to the ngc compiler:
* the error for a selector-less directive is now generated when an NgModule
declaring it is processed, not when the directive itself is processed.
* selector-less directives are not tracked along with other directives in
the compiler, preventing other errors (like their absence in an NgModule)
from being generated from them.
PR Close#31379
In Angular today, the following pattern works:
```typescript
export class BaseDir {
constructor(@Inject(ViewContainerRef) protected vcr: ViewContainerRef) {}
}
@Directive({
selector: '[child]',
})
export class ChildDir extends BaseDir {
// constructor inherited from BaseDir
}
```
A decorated child class can inherit a constructor from an undecorated base
class, so long as the base class has metadata of its own (for JIT mode).
This pattern works regardless of metadata in AOT.
In Angular Ivy, this pattern does not work: without the @Directive
annotation identifying the base class as a directive, information about its
constructor parameters will not be captured by the Ivy compiler. This is a
result of Ivy's locality principle, which is the basis behind a number of
compilation optimizations.
As a solution, @Directive() without a selector will be interpreted as a
"directive base class" annotation. Such a directive cannot be declared in an
NgModule, but can be inherited from. To implement this, a few changes are
made to the ngc compiler:
* the error for a selector-less directive is now generated when an NgModule
declaring it is processed, not when the directive itself is processed.
* selector-less directives are not tracked along with other directives in
the compiler, preventing other errors (like their absence in an NgModule)
from being generated from them.
PR Close#31379
Fixes Ivy's directive matching not capturing attribute selectors when there is one class binding, one style binding and a regular binding that precede the attribute that would match the directive. The issue appears to come from the fact that we weren't skipping over style bindings correctly which was throwing the loop off not to go into `bindingsMode` and to skip some of the bindings when matching.
PR Close#31942
Fixes Ivy's `DebugElement.triggerEventHandler` to picking up events that have been registered through a `Renderer2`, unlike ViewEngine.
This PR resolves FW-1480.
PR Close#31845
Prior to this commit, the `schemas` configuration was applied to top-level view only. That leads to problems when using unknown props with elements inside nested views (for example generated as a result of *ngIf). This commit passes `schemas` information down to nested views to make sure that all the checks are consistent.
PR Close#31913
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
In `BrowserModule` the value of `LOCALE_ID` is defined in the `APPLICATION_MODULE_PROVIDERS` after `APP_INITIALIZER` has run.
This PR ensures that `LOCALE_ID` is also set for ivy at the same moment which allows the application to fetch the locale from a backend (for example).
Fixes#31465
FW-1436 #resolve
PR Close#31566
Fixes Ivy throwing an error when something is passed in as a `forwardRef` into `@Injectable`'s `useClass` option. The error was being thrown, because we were trying to get the provider factory off of the wrapper function, rather than the value itself.
This PR resolves FW-1335.
PR Close#30532
Currently we always generate the `read` parameter for the view and content query instructions, however since most of the time the `read` parameter won't be set, we'll end up generating `null` which adds 5 bytes for each query when minified. These changes make it so that the `read` parameter only gets generated if it has a value.
PR Close#31667
This commit fixes a bug where we assumed all dynamically created
components would have tag-name selectors, so we passed through the
"tag name" to the renderer as the first index of the selector. For
components with attribute selectors, the tag name would be "", so
the renderer would try to create an element with tag name "" and
throw. Now we default to a "div" element the same way that View
Engine did.
Closes#31785
PR Close#31812
The way the `ComponentFactory.create` is set up at the moment is that if a `rootSelectorOrNode` is passed in, the root context will be injected instead of creating dedicated one for the component. As far as I can tell, there doesn't seem to be a reason to do this and nothing seems to break because of it. These changes switch to always create the root context.
PR Close#31661
In ViewEngine nodes that were inserted through `Renderer2` would also be picked up by `DebugNode.query` and `DebugNode.queryAll`. This worked because everything in ViewEngine went through `Renderer2` and `DebugRenderer2` in dev mode which was able to keep track of the child nodes as they're being inserted. This no longer works in Ivy, because we don't use `DebugRenderer2` and debug nodes work a little differently. These changes work around the issue by walking the DOM as the logical tree is being walked and looking for matches. Note that this is __not__ optimal, because we're walking similar trees multiple times. ViewEngine could do it more efficiently, because all the insertions go through Renderer2, however that's not the case in Ivy. This approach is being used because:
1. Matching the ViewEngine behavior would mean potentially introducing a depedency from `Renderer2` to Ivy which could bring Ivy code into ViewEngine.
2. We would have to make `Renderer3` "know" about debug nodes.
3. It allows us to capture nodes that were inserted directly via the DOM.
PR Close#31716
When injecting a `ChangeDetectorRef` into a pipe, the expected result is that the ref will be tied to the component in which the pipe is being used. This works for most cases, however when a pipe is used inside a property binding of a component (see test case as an example), the current `TNode` is pointing to component's host so we end up injecting the inner component's view. These changes fix the issue by only looking up the component view of the `TNode` if the `TNode` is a parent.
This PR resolves FW-1419.
PR Close#31438
In the previous patch () all the existing styling code was turned
off in favor of using the new refactored ivy styling code. This
patch is a follow up patch to that and removes all old, unused
styling code from the render3 directory.
PR Close#31193
This commit fixes a bug where ICU expressions inserted into ngTemplateOutlets
that are inside ngFor blocks would throw an error. We were assuming in view
insertion code that text nodes would always exist by the time a view\`s
creation block had executed. This is not true for text nodes created dynamically
by ICUs because this happens in the update block (in `i18nApply`).
This change ensures such dynamically created nodes are skipped when encountered
too early (as they will be attached later by i18n code anyway).
PR Close#31789
This commit is the final patch of the ivy styling algorithm refactor.
This patch swaps functionality from the old styling mechanism to the
new refactored code by changing the instruction code the compiler
generates and by pointing the runtime instruction code to the new
styling algorithm.
PR Close#30742
In View Engine, developers can pass bootstrap and entry components
as nested arrays. e.g.
```ts
export const MyOtherEntryComponents = [A, B, C]
@NgModule({
entryComponents: [MyComp, MyOtherEntryComponents]
})
```
Currently using nested arrays for these properties causes
unexpected errors to be reported in Ivy since the semantic
NgModule checks aren't properly recursing into the nested
entry/bootstrap components. This issue has been unveiled by
enabling the strict function parameter checks.
PR Close#30993
Currently the `ɵɵdefineComponent` method has incorrect type
definitions the `directives` and `pipes` metadata property.
The incorrect types allow developers to pass in already instantiated
`DirectiveDef` or `ComponentDef` objects. This can cause unexpected
failures because the definition internally only expects `Type` objects
and now incorrectly tries to read the `ngDirectiveDef` or `ngComponentDef`
of existing definitions.
This issue has been unveiled by enabling the strict function parameter
types flag, where the directive definitions are determined from each array
element in the `directives` or `pipes` property (which can throw).
PR Close#30993
As part of FW-1265, the `@angular/core` package is made compatible
with the TypeScript `--strict` flag. This already unveiled a few bugs,
so the strictness flag seems to help with increasing the overall code health.
Read more about the strict flag [here](https://www.typescriptlang.org/docs/handbook/compiler-options.html)
PR Close#30993
Fixes Ivy matching directives against attribute bindings (e.g. `[attr.some-directive]="foo"`). Works by excluding attribute bindings from the attributes array during compilation. This has the added benefit of generating less code.
**Note:** My initial approach to implementing this was to have a different marker for attribute bindings so that they can be ignored when matching directives, however as I was implementing it I realized that the attributes in that array were only used for directive matching (as far as I could tell). I decided to drop the attribute bindings completely, because it results in less generated code.
PR Close#31541
Prior to this commit, default value for LOCALE_ID was not setup for Closure Compiler. In Closure Compiler, we can use `goog.LOCALE` as a default value, which will be replaced at build time with current locale.
PR Close#31519
Currently we reuse the same instruction both for regular property bindings and property bindings on the `host`. The only difference between the two is that when it's on the host we shouldn't support inputs. We have an optional parameter called `nativeOnly` which is used to differentiate the two, however since `nativeOnly` is preceeded by another optional parameter (`sanitizer`), we have to generate two extra parameters for each host property bindings every time (e.g. `property('someProp', 'someValue', null, true)`).
These changes add a new instruction called `hostProperty` which avoids the need for the two parameters by removing `nativeOnly` which is always set and it allows us to omit `sanitizer` when it isn't being used.
These changes also remove the `nativeOnly` parameter from the `updateSyntheticHostBinding` instruction, because it's only generated for host elements which means that we can assume that its value will always be `true`.
PR Close#31550
Removes direct calls from one instruction into another, moves the shared logic into a separate function and removes the state getters from the shared function.
This PR resolves FW-1340.
PR Close#31456
Since `goog.getMsg` does not process ICUs (post-processing is required via goog.i18n.MessageFormat, https://google.github.io/closure-library/api/goog.i18n.MessageFormat.html) and placeholder format used for ICUs and regular messages inside `goog.getMsg` are different, the current implementation (that assumed the same placeholder format) needs to be updated. This commit updates placeholder format used inside ICUs from `{$placeholder}` to `{PLACEHOLDER}` to better align with Closure. ICU placeholders (that were left as is prior to this commit) are now replaced with actual values in post-processing step (inside `i18nPostprocess`).
PR Close#31459
Prior to this commit, the `` unicode symbol that represents `&ngsp` in translations was not handled correctly, i.e. was not replaced with a whitespace, thus appearing on a screen. This commit adds post-processing and replaces the mentioned symbol with a whitespace.
PR Close#31479
`i18nStart` was calling `allocExpando` even if there was 0 new variable created.
This created a new expando instruction with the value 0 which was later interpreted as the start of a new expando block instead of just skipping 0 instructions.
FW-1417 #resolve
PR Close#31451
Fixes Ivy's return value for `DebugNode.context` not being consistent for the case where there is both a structural directive and a component on a node. In `ViewEngine` the instance of the component would be returned, whereas in Ivy the context of the directive is returned.
Also adds a couple of extra test cases for how `DebugNode.context` deals with directives.
This PR resolves FW-1343.
PR Close#31442
Adds a new `elementContainer` instruction that can be used to avoid two instruction (`elementContainerStart` and `elementContainerEnd`) for `ng-container` that has text-only content. This is particularly useful when we have `ng-container` inside i18n sections.
This PR resolves FW-1105.
PR Close#31444
Adds the new `classMapInterpolate1` through `classMapInterpolate8` instructions which handle interpolations inside the `class` attribute and moves the interpolation logic internally. This allows us to remove the `interpolationX` instructions in a follow-up PR.
These changes also add an error if an interpolation is encountered inside a `style` tag (e.g. `style="width: {{value}}"`). Up until now this would actually generate valid instructions, because `styleMap` goes through the same code path as `classMap` which does support interpolation. At runtime, however, `styleMap` would set invalid styles that look like `<div style="0:w;1:i;2:d;3:t;4:h;5::;7:1;">`. In `ViewEngine` interpolations inside `style` weren't supported either, however there we'd output invalid styles like `<div style="unsafe">`, even if the content was trusted.
PR Close#31211
When a class uses Angular decorators such as `@Input`, `@Output` and
friends without an Angular class decorator, they are compiled into a
static `ngBaseDef` field on the class, with the TypeScript declaration
of the class being altered to declare the `ngBaseDef` field to be of type
`ɵɵBaseDef`. This type however requires a generic type parameter that
corresponds with the type of the class, however the compiler did not
provide this type parameter. As a result, compiling a program where such
invalid `ngBaseDef` declarations are present will result in compilation
errors.
This commit fixes the problem by providing the generic type parameter.
Fixes#31160
PR Close#31210
Prior to this commit, host element of a view created via TestBed.createComponent was not attached to the component's host, making it problematic to use TestBed.createComponent API in component factories, which might be used for testing purposes only. This behavior is observed in google3 app tests and was supported by VE, so this commit aligns Ivy and VE.
PR Close#31318
Adds chaining to the `property`, `attribute` and `updateSyntheticHostBinding` instructions when they're used in a host binding.
This PR resolves FW-1404.
PR Close#31296
When `walkTNodeTree` was refactored, the case of ICU expressions was forgotten (because it was handled in the `else` previously).
This PR fixes that to handle it like `ElementContainer`.
FW-1411 #resolve
PR Close#31313
Currently in Ivy whenever we encounter a new namespace, we set it in the global state so that all subsequent nodes are created under the same namespace. Next time a template is run the namespace will be reset back to HTML.
This breaks down if the last node that was rendered was under the SVG or MathML namespace and we create a component through `ViewContainerRef.create`, because the next template function hasn't run yet and it hasn't had the chance to update the namespace. The result is that the root node of the new component will retain the wrong namespace and may not end up rendering at all (e.g. if we're trying to show a `div` inside the SVG namespace). This issue has the potential to affect a lot of apps, because all components inserted through the router also go through `ViewContainerRef.create`.
PR Close#31232
These files have not been formatted properly, due to issues in the
`gulp format*` tasks. See previous commits (or #31295) for more details.
PR Close#31295
The Angular runtime frequently calls into user code (for example, when
writing to a property binding). Since user code can throw errors, calls to
it are frequently wrapped in a try-finally block. In Ivy, the following
pattern is common:
```typescript
enterView();
try {
callUserCode();
} finally {
leaveView();
}
```
This has a significant problem, however: `leaveView` has a side effect: it
calls any pending lifecycle hooks that might've been scheduled during the
current round of change detection. Generally it's a bad idea to run
lifecycle hooks after the application has crashed. The application is in an
inconsistent state - directives may not be instantiated fully, queries may
not be resolved, bindings may not have been applied, etc. Invariants that
the app code relies upon may not hold. Further crashes or broken behavior
are likely.
Frequently, lifecycle hooks are used to make assertions about these
invariants. When these assertions fail, they will throw and "swallow" the
original error, making debugging of the problem much more difficult.
This commit modifies `leaveView` to understand whether the application is
currently crashing, via a parameter `safeToRunHooks`. This parameter is set
by modifying the above pattern:
```typescript
enterView();
let safeToRunHooks = false;
try {
callUserCode();
safeToRunHooks = true;
} finally {
leaveView(..., safeToRunHooks);
}
```
If `callUserCode` crashes, then `safeToRunHooks` will never be set to `true`
and `leaveView` won't call any further user code. The original error will
then propagate back up the stack and be reported correctly. A test is added
to verify this behavior.
PR Close#31244
In ViewEngine injecting a Renderer2 returns a renderer that is specific to the particular component, however in Ivy we inject the renderer for the parent view instead. This causes it to set incorrect `ngcontent` attributes when creating elements through the renderer.
The issue comes from the fact that the `Renderer2` is created according to the current `LView`, but because DI happens before we've entered the `LView` of the component that's injecting the renderer, we end up with one that's one level up. We work around the issue by finding the `LView` that corresponds to the `previousOrParentTNode` inside of the parent view and associating the `Renderer2` with it.
This PR resolves FW-1382.
PR Close#31063
Previously, multiple ViewContainerRef instances (obtained by injecting
ViewContainerRef multiple times) each had private state that could be out of
sync with actual LContainer, if views were inserted/removed/queried across
the different instances. In particular each instance had its own array which
tracked ViewRefs inserted via that instance.
This commit moves the ViewRefs array onto the LContainer itself, so that it
can be shared across multiple ViewContainerRef instances. A test is added
that verifies ViewContainerRefs now provide a consistent view of the
container.
FW-1377 #resolve
PR Close#30985
Pawel Kozlowski
crisbeto
Andrew Kushnir
Miško Hevery
Matias Niemelä
JoostK
Alex Rickabaugh
Pete Bacon Darwin
Kapunahele Wong
Igor Minar
vikerman
Kara Erickson
JiaLiPassion
Nikita Potapenko
Danny Skoog
Paul Gschwendtner
cexbrayat
George Kalpakas
Martin Probst
atscott
Andrew Scott
thekiba
Filipe Silva
Carlos Ortiz García
atscott
Judy Bogart
hafiz
Olivier Combe
Erik Pintar
Momin Khan
nikz99
Alan
Umair Sarfraz
Santosh Yadav