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
In View Engine, animation metadata could occur in nested arrays which
would be flattened in the compiler. When compiling a component for Ivy
however, the compiler no longer statically evaluates a component's
animation metadata and is therefore unable to flatten it statically.
This resulted in an issue to find animations at runtime, as the metadata
was incorrectly registered with the animation engine.
Although it would be possible to statically evaluate the animation
metadata in ngtsc, doing so would prevent reusable animations exported
from libraries from being usable as ngtsc's partial evaluator is unable
to read values inside libraries. This is unlike ngc's usage of static
symbols represented in a library's `.metadata.json`, which explains how
the View Engine compiler is able to flatten the animation metadata
statically.
As an alternative solution, the metadata flattening is now done in the
runtime during the registration of the animation metadata with the
animation engine.
Fixes#32794
PR Close#32818
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
Re-enables the dynamic queries migration, now that we have all of the necessary framework changes in place.
Also moves the logic that identifies static queries out of the compiler and into the static queries migration, because that's the only place left that's using it.
PR Close#32992
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
Current we need to create and override certain compiler host methods in every schematic because schematics use a virtual fs. We this change we extract this logic to a common util.
PR Close#32827
The creation of StaticReflector in createMetadataResolver() is a very expensive operation because it involves numerous module resolutions.
To make matter worse, since the API of the Reflector does not provide the ability to invalidate its internal caches, it has to be destroyed and recreated on *every* program change.
This has a HUGE impact on performance.
This PR fixes this problem by carefully invalidating all StaticSymbols in a file that has changed, thereby reducing the overhead of recomputation on program change.
PR Close#32543
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
Currently the undecorated-classes-with-di migration leverages NGC in order
to work with metadata resolution. Since NGC by default tries to resolve referenced
resources on initialization of the underlying TS program, it can result in unexpected
migration failures due to missing resource files.
This is especially an issue since the CLI wraps the `AngularCompilerProgram` with
special logic (i.e. to support SCSS preprocessing etc.). We don't have all of this since
we instantiate a vanilla NGC program.
The solution to the problem is to simply treat resource requests as valid, and returning
a fake content. The migration is not dependent on templates or stylesheets.. so it's the
simplest and most robust solution.
Fixes#32826
PR Close#32953
ec4381d explicitly set `enableIvy: false` for all migrations inside
the core package. This actually hides migration issues because the
migration itself should ensure that it instantiates the right
compiler program if it relies on `@angular/compiler-cli`.
We should remove these options from all migration tests to
ensure that we catch issues with migrations running in version
9 where Ivy is enabled by default.
e.g. e5636a322c
was accidentally hidden due to the `enableIvy: false` option.
PR Close#32954
ec4381d enabled Ivy by default. This is problematic as migrations
like `static-queries` depend on the `AngularCompilerProgram` (NGC)
in order to perform the migration from version 7 to version 8.
In order to ensure that the migration always runs with NGC
(and doesn't get the `NgtscProgram`), we need to explicitly disable
ivy when creating the `@angular/compiler-cli` program for the migration.
This code is still relevant even though the update from version 7
to version 8 landed. Developers can run `ng update` from version 7
and immediately get to version 9 where Ivy is enabled by default (and in
that case we need to ensure that ngtsc is not accidentally used).
Similar to
e5636a322c.
PR Close#32954
In an attempt to be compatible with previous translation files
the Angular compiler was generating instructions that always
included the message id. This was because it was not possible
to accurately re-generate the id from the calls to `$localize()` alone.
In line with https://hackmd.io/EQF4_-atSXK4XWg8eAha2g this
commit changes the compiler so that it only renders ids if they are
"custom" ones provided by the template author.
NOTE:
When translating messages generated by the Angular compiler
from i18n tags in templates, the `$localize.translate()` function
will compute message ids, if no custom id is provided, using a
common digest function that only relies upon the information
available in the `$localize()` calls.
This computed message id will not be the same as the message
ids stored in legacy translation files. Such files will need to be
migrated to use the new common digest function.
This only affects developers who have been trialling `$localize`, have
been calling `loadTranslations()`, and are not exclusively using custom
ids in their templates.
PR Close#32867
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
Prior to this commit, the `ngProjectAs` attribute was only included with a special flag and in a parsed format. As a result, projected node was missing `ngProjectAs` attribute as well as other attributes added after `ngProjectAs` one. This is problematic since app code might rely on the presence of `ngProjectAs` attribute (for example in CSS). This commit fixes the problem by including `ngProjectAs` into attributes array as a regular attribute and also makes sure that the parsed version of the `ngProjectAs` attribute with a special marker is added after regular attributes (thus we set them correctly at runtime). This change also aligns View Engine and Ivy behavior.
PR Close#32784
This release includes a ts_config runfiles fix so also cleaning up the one line work-around from #31943.
This also updates to upstream rules_webtesting browser repositories load("@io_bazel_rules_webtesting//web/versioned:browsers-0.3.2.bzl", "browser_repositories") to fix a breaking change in the chromedriver distro. This bumps up the version of chromium to the version here: https://github.com/bazelbuild/rules_webtesting/blob/master/web/versioned/browsers-0.3.2.bzl
PR Close#32151
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
Now that the `$localize` translations are `MessageId` based the
compiler must render `MessageId`s in its generated `$localize` code.
This is because the `MessageId` used by the compiler is computed
from information that does not get passed through to the `$localize`
tagged string.
For example, the generated code for the following template
```html
<div id="static" i18n-title="m|d" title="introduction"></div>
```
will contain these localization statements
```ts
if (ngI18nClosureMode) {
/**
* @desc d
* @meaning m
*/
const MSG_EXTERNAL_8809028065680254561$$APP_SPEC_TS_1 = goog.getMsg("introduction");
I18N_1 = MSG_EXTERNAL_8809028065680254561$$APP_SPEC_TS_1;
}
else {
I18N_1 = $localize \`:m|d@@8809028065680254561:introduction\`;
}
```
Since `$localize` is not able to accurately regenerate the source-message
(and so the `MessageId`) from the generated code, it must rely upon the
`MessageId` being provided explicitly in the generated code.
The compiler now prepends all localized messages with a "metadata block"
containing the id (and the meaning and description if defined).
Note that this metadata block will also allow translation file extraction
from the compiled code - rather than relying on the legacy ViewEngine
extraction code. (This will be implemented post-v9).
Although these metadata blocks add to the initial code size, compile-time
inlining will completely remove these strings and so will not impact on
production bundle size.
PR Close#32594
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
If an <ng-template> contains a structural directive (for example *ngIf), Ngtsc generates extra template function with 1 template instruction call. When <ng-template> tag also contains i18n attribute on it, we generate i18nStart and i18nEnd instructions around it, which is unnecessary and breaking runtime. This commit adds a logic to make sure we do not generate i18n instructions in case only `template` is present.
PR Close#32623
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
Ensures that the "core_all:size_test" target runs with "--define=compile=aot".
This is necessary because we don't run this test on CI currently, but if we run
it manually, we need to ensure that it runs with Ivy for proper size comparisons.
PR Close#32613
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
Adds two acceptance tests to show a current difference in behavior between Ivy and VE.
A directive with a selector `.Titledir` matches an element with `class="titleDir"` in VE but not in Ivy.
Same thing for an attribute value.
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
The `goog.getMsg()` function requires placeholder names to be camelCased.
This is not the case for `$localize`. Here placeholder names need
match what is serialized to translation files.
Specifically such placeholder names keep their casing but have all characters
that are not in `a-z`, `A-Z`, `0-9` and `_` converted to `_`.
PR Close#32509
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 commit, complex expressions (that require additional statements to be generated) were handled incorrectly in case they were used in attributes annotated with i18n flags. The problem was caused by the fact that extra statements were not appended to the temporary vars block, so they were missing in generated code. This commit updated the logic to use the `convertPropertyBinding`, which contains the necessary code to append extra statements. The `convertExpressionBinding` function was removed as it duplicates the `convertPropertyBinding` one (for the most part) and is no longer used.
PR Close#32309
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
Commit 904a2018e0 introduced a new migration for
undecorated classes with decorated Angular class members. Currently the migration
always calls `tree.beginUpdate` and `tree.commitUpdate` (even if there are no changes).
This causes unnecessary updates to be reported to developers running `ng update`. Once
an update is commited, the CLI will report the update regardless of whether any changes were
made or not.
This behavior can be observed in the `ng_update_migrations` integration test. See:
https://circleci.com/gh/angular/angular/438470#tests/containers/3. Notice how all
source files are denoted as `UPDATED` (even though there are no changes).
PR Close#32391
This patch introduces a new micro benchmark that performance tests
against map-based style and class bindings in Ivy running together
on the same element.
PR Close#32401
This patch introduces a new micro benchmark that performance tests
against style and class bindings in Ivy running together on the same
element.
PR Close#32401
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
Initially the `missing-injectable` migration was only being used
in google3. Wiring the migration up in the CLI migrations was
planned to be done in a follow-up.
PR Close#32349
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
Currently the undecorated classes migration decorates base classes if no
explicit constructor is defined on all classes in the inheritance chain.
We only want to decorate base classes which define a constructor that is
inherited. Additionally for best practice, all classes in between the class
that inherits the constructor and the one that defines it are also decorated.
PR Close#32319
The `undecorated-classes-with-di` migration currently creates invalid object literals from parsed
NGC metadata files if there are object literal properties with keys that contain special characters.
e.g. consider a decorated base class with a host binding using `[class.X]`. Currently the migration
parses and converts the metadata to TypeScript code but incorrectly uses `[class.X]` unquoted as
identifier.
PR Close#32319
Apparently the names of the bazel test targets in the schematics are
incorrect. This commit updates the target names to match their bazel
package name.
PR Close#32318
ec4381dd40 enabled Ivy by default. This is
problematic as migrations like `undecorated-classes-with-di` depend on the
`AngularCompilerProgram` (NGC) in order to perform the migration from
version 8 to version 9. In order to ensure that the migration always runs
with NGC (and doesn't get the `NgtscProgram`), we need to explicitly disable
ivy when creating the `@angular/compiler-cli` program for the migration.
PR Close#32318
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
This commit switches the default value of the enableIvy flag to true.
Applications that run ngc will now by default receive an Ivy build!
This does not affect the way Bazel builds in the Angular repo work, since
those are still switched based on the value of the --define=compile flag.
Additionally, projects using @angular/bazel still use View Engine builds
by default.
Since most of the Angular repo tests are still written against View Engine
(particularly because we still publish VE packages to NPM), this switch
also requires lots of `enableIvy: false` flags in tsconfigs throughout the
repo.
Congrats to the team for reaching this milestone!
PR Close#32219
Initially the plan was to have a migration that adds `@Injectable()` to
all pipes in a CLI project so that the pipes can be injected in Ivy
similarly to how it worked in view engine.
Due to the planned refactorings which ensure that `@Directive`, `@Component`
and `@Pipe` also have a factory definition, this migration is no longer
needed for Ivy. Additionally since it is already disabled (due to
572b54967c) and we have a more generic
migration (known as `missing-injectable)` that could do the same as
`injectable-pipe`, we remove the migration from the code-base.
PR Close#32184
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
Bundle size changed in both zone.js(legacy) and zone-evergreen.js
- zone.js(legacy) package increased a little because the following feature and fixes.
1. #31699, handle MSPointer events PR
2. https://github.com/angular/zone.js/pull/1219 to add __zone_symbol__ customization support
- zone-evergreen.js package decreased because
1. the MSPointer PR only for legacy
2. the Object.defineProperty patch is moved to legacy #31660
PR Close#31975
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
For some reason (on OS/X) this transitive dependency is not being passed
through to the final TS builds that rely on this rule, so the build fails
with a missing file error:
```
The specified path does not exist:
'/.../sandbox/darwin-sandbox/451/execroot/angular/packages/tsconfig-build.json'.
```
PR Close#31943
Introduces a new migration schematic that follows the given
migration plan: https://hackmd.io/@alx/S1XKqMZeS.
First case: The schematic detects decorated directives which
inherit a constructor. The migration ensures that all base
classes until the class with the explicit constructor are
properly decorated with "@Directive()" or "@Component". In
case one of these classes is not decorated, the schematic
adds the abstract "@Directive()" decorator automatically.
Second case: The schematic detects undecorated declarations
and copies the inherited "@Directive()", "@Component" or
"@Pipe" decorator to the undecorated derived class. This
involves non-trivial import rewriting, identifier aliasing
and AOT metadata serializing
(as decorators are not always part of source files)
PR Close#31650
Follow-up to #30993 where we build all Angular packages with
the TypeScript `--strict` flag. The flag improves overall code
health and also helps us catch issues easier.
PR Close#31967
Similar to interpolation, we do not want to completely remove whitespace
nodes that are siblings of an expansion.
For example, the following template
```html
<div>
<strong>items left<strong> {count, plural, =1 {item} other {items}}
</div>
```
was being collapsed to
```html
<div><strong>items left<strong>{count, plural, =1 {item} other {items}}</div>
```
which results in the text looking like
```
items left4
```
instead it should be collapsed to
```html
<div><strong>items left<strong> {count, plural, =1 {item} other {items}}</div>
```
which results in the text looking like
```
items left 4
```
---
**Analysis of the code and manual testing has shown that this does not cause
the generated ids to change, so there is no breaking change here.**
PR Close#31962
Moves the `renderer_to_renderer2` migration google3 tslint rule
into the new `google3` directory. This is done for consistency
as we recently moved all google3 migration rules into a new
`google3` folder (see: f69e4e6f77).
PR Close#31817
Creates a separate bazel target for the google3 migration
tests. The benefit is that it's faster to run tests for
public migrations in development. Google3 lint rules are
usually another story/implementation and the tests are quite
slow due to how TSLint applies replacements.
Additionally if something changes in the google3 tslint rules,
the tests which aren't affected re-run unnecessarily.
PR Close#31817
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
nodejs rules 0.34.0 now includes protractor_web_test_suite rule (via new @bazel/protractor rule) so we switch to that location for that rule in this PR so that /packages/bazel/src/protractor can be removed in a future PR
this PR also brings in node toolchain support which was released in nodejs rules 0.33.0. this is a prerequisite for RBE for mac & windows users
bazel schematics also updated with the same. @bazel/bazel 0.28.1 npm package includes transitive dep on hide-bazel-files so we're able to remove an explicit dep on that as well.
PR Close#31824
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
Moves all google3 migration tslint rules into a single directory.
This makes it easier to wire up multiple migration rules in
google3 without having to update the rule directories each time
a new migration is available.
PR Close#30956
Introduces a new migration schematic for adding the "@Injectable()"
decorator to provider classes which are currently not migrated. Previously
in ViewEngine, classes which are declared as providers sometimes don't
require the "@Injectable()" decorator
(e.g. https://stackblitz.com/edit/angular-hpo7gw)
With Ivy, provider classes need to be explicitly decorated with
the "@Injectable()" decorator if they are declared as providers
of a given module. This commit introduces a migration schematic
which automatically adds the explicit decorator to places where
the decorator is currently missing.
The migration logic is designed in a CLI devkit and TSlint agnostic
way so that we can also have this migration run as part of a public
CLI migration w/ `ng update`. This will be handled as part of a follow-up to reiterate on console output etc.
Resolves FW-1371
PR Close#30956
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
We currently have a handwritten version of the Ivy directive def for NgClass so
we can switch between Ivy and View Engine behavior. This generated code needs to
be kept up-to-date with what the Ivy compiler generates.
PR 30742 recently changed `classMap` such that it now requires allocation of
host binding slots. This means that the `allocHostVars()` function must be
called in the NgClass directive def to match compiler output, but the
handwritten directive def was not updated. This caused a bug where NgClass
was inappropriately overwriting data for other directives because space was
not allocated for its values.
PR Close#31788
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
Fixes all TypeScript failures caused by enabling the `--strict`
flag for test source files. We also want to enable the strict
options for tests as the strictness enforcement improves the
overall codehealth, unveiled common issues and additionally it
allows us to enable `strict` in the `tsconfig.json` that is picked
up by IDE's.
PR Close#30993
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
Prior to this fix, the logic to set the right placeholder format for ICUs was a bit incorrect: if there was a nested ICU in one of the root ICU cases, that led to a problem where placeholders in subsequent branches used the wrong ({$placeholder}) format instead of {PLACEHOLDER} one. This commit updates the logic to make sure we properly transform all placeholders even if nested ICUs are present.
PR Close#31516
Prior to this commit, it was impossible to override providers defined via ModuleWithProviders using TestBed.overrideProvider API. The problem was caused by the fact that we were not taking into account these providers while calculating accumulated set of provider overrides. This commit updates the logic to extract providers from ModuleWithProviders and calculate the final set of overrides taking them into account.
PR Close#31415
Removes direct calls from one instruction into another, moves the shared logic into a separate function and removes the state getters from the shared function.
This PR resolves FW-1340.
PR Close#31456
Since `goog.getMsg` does not process ICUs (post-processing is required via goog.i18n.MessageFormat, https://google.github.io/closure-library/api/goog.i18n.MessageFormat.html) and placeholder format used for ICUs and regular messages inside `goog.getMsg` are different, the current implementation (that assumed the same placeholder format) needs to be updated. This commit updates placeholder format used inside ICUs from `{$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 a schematic and tslint rule that automatically migrate the consumer from `Renderer` to `Renderer2`. Supports:
* Renaming imports.
* Renaming property and method argument types.
* Casting to `Renderer`.
* Mapping all of the methods from the `Renderer` to `Renderer2`.
Note that some of the `Renderer` methods don't map cleanly between renderers. In these cases the migration adds a helper function at the bottom of the file which ensures that we generate valid code with the same return value as before. E.g. here's what the migration for `createText` looks like.
Before:
```
class SomeComponent {
createAndAddText() {
const node = this._renderer.createText(this._element.nativeElement, 'hello');
node.textContent += ' world';
}
}
```
After:
```
class SomeComponent {
createAndAddText() {
const node = __rendererCreateTextHelper(this._renderer, this._element.nativeElement, 'hello');
node.textContent += ' world';
}
}
function __rendererCreateTextHelper(renderer: any, parent: any, value: any) {
const node = renderer.createText(value);
if (parent) {
renderer.appendChild(parent, node);
}
return node;
}
```
This PR resolves FW-1344.
PR Close#30936
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
Brings in ts_library fixes required to get angular/angular building after 0.32.0:
typescript: exclude typescript lib declarations in node_module_library transitive_declarations
typescript: remove override of @bazel/tsetse (+1 squashed commit)
@npm//node_modules/foobar:foobar.js labels changed to @npm//:node_modules/foobar/foobar.js with fix for bazelbuild/rules_nodejs#802
also updates to rules_rass commit compatible with rules_nodejs 0.32.0
PR Close#31325
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
Brings in ts_library fixes required to get angular/angular building after 0.32.0:
typescript: exclude typescript lib declarations in node_module_library transitive_declarations
typescript: remove override of @bazel/tsetse (+1 squashed commit)
@npm//node_modules/foobar:foobar.js labels changed to @npm//:node_modules/foobar/foobar.js with fix for bazelbuild/rules_nodejs#802
also updates to rules_rass commit compatible with rules_nodejs 0.32.0
PR Close#31019
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
The function `bind` has been internalized wherever it was needed, this PR makes sure that it is no longer publicly exported.
FW-1385 #resolve
PR Close#31131
Currently the `RecursiveAstVisitor` that is part of the template expression
parser does not _always_ properly pass through the context that can be
specified when visting a given expression. Only a handful of AST types
pass through the context while others are accidentally left out. This causes
unexpected and inconsistent behavior and basically makes the `context`
parameter not usable if the type of template expression is not known.
e.g. the template variable assignment migration currently depends on
the `RecursiveAstVisitor` but sometimes breaks if developers use
things like conditionals in their template variable assignments.
Fixes#31043
PR Close#31085
Currently the `placeholders` parameter inside `i18nLocalize` is defaulted to `{}`, which means that we'll always hit the `Object.keys` call below. Since it's very likely that we won't have placeholders in the majority of strings, these changes add an extra guard so that we don't hit it on every invocation.
PR Close#31106
i18nExp now uses `bind` internally rather than having the compiler generate it in order to bring it in line with other functions like `textBinding` & `property`.
FW-1384 #resolve
PR Close#31089
When using `createEmbeddedView` after the creation of an ICU expression, the nodes for the current selected case were not reprojected (only the anchor comment node was moved to the new location).
Now we reproject correctly all the child nodes of an ICU expression when an anchor comment node is projected.
FW-1372 #resolve
PR Close#30979
- Splits core functionality off into a shared internal function
- ɵɵtextBinding will no longer require an index
- Alters the compiler to stop generating an index argument for the instruction
- Updates tests
- Updates some usage of ɵɵtextBinding in i18n to use the helper function instead
PR Close#30792
The DI's `locateDirectiveOrProvider` function operates on `TView` / `TNode`
data structures only so doesn't need to access `LView`. This refactoring
changes the argument list so the mentioned function takes less info to do
its work.
This refactoring is also mandatory for the upcoming query matching move
to TView.
PR Close#31006
Currently in Ivy we throw when attempting to destroy a `ComponentRef` that has been destroyed, however in ViewEngine we didn't which can cause some tests to break. These changes remove the error to match ViewEngine.
These changes resolve FW-1379.
PR Close#31022
To provide some context: The implicit receiver is part of the
parsed Angular template AST. Any property reads in bindings,
interpolations etc. read from a given object (usually the component
instance). In that case there is an _implicit_ receiver which can also
be specified explicitly by just using `this`.
e.g.
```html
<ng-template>{{this.myProperty}}</ng-template>
```
This works as expected in Ivy and View Engine, but breaks in case the
implicit receiver is not used for property reads. For example:
```html
<my-dir [myFn]="greetFn.bind(this)"></my-dir>
```
In that case the `this` will not be properly translated into the generated
template function code because the Ivy compiler currently always treats
the `ctx` variable as the implicit receiver. This is **not correct** and breaks
compatibility with View Engine. Rather we need to ensure that we retrieve
the root context for the standalone implicit receiver similar to how it works
for property reads (as seen in the example above with `this.myProperty`)
Note that this requires some small changes to the `expression_converter`
because we only want to generate the `eenextContent()` instruction if the
implicit receiver is _actually_ used/needed. View Engine determines if that is the case by recursively walking through the converted output AST and
checking for usages of the `o.variable('_co')` variable ([see here][ve_check]). This would work too for Ivy, but involves most likely more code duplication
since templates are isolated in different functions and it another pass
through the output AST for every template expression.
[ve_check]: 0d6c9d36a1/packages/compiler/src/view_compiler/view_compiler.ts (L206-L208)
Resolves FW-1366.
PR Close#30897
In a derived service class with no decorator (and therefore no factory) of
its own, the factory function of the base class will be used instead.
Previously this logic had a bug where the factory function would be called
with no arguments, which would incorrectly create an instance of the base
class.
This commit adds logic to call the base class' factory and pass the type of
the derived class, which will correctly construct an instance of the
derived class using the base class' factory. A test is also added to verify
correctness of this behavior.
PR Close#30855
Factory functions written by the compiler optionally allow an explicit type
to be passed. If called with this type, an instance of the given type will
be created instead of the type for which the factory was generated. This is
used to power inheritance of Angular types, as if the constructor of a class
is inherited from its superclass, then the factory function of the
superclass must be used (it has all the DI info) to construct an instance of
the derived class.
This commit adjusts typings in a few places to allow factory functions to be
called with this extra type parameter.
PR Close#30855
In older browsers such as IE10, inheritance of static properties on class
types is implemented by copying the properties. This makes hasOwnProperty
unreliable for checking if a static property is defined directly on a class
or is inherited. This causes problems when trying to read the
ngInjectableDef properties of inherited services, as in IE10 even inherited
definitions will appear to be local.
Instead, the 'token' property on ngInjectableDef can be leveraged to detect
when a definition is read which doesn't belong to the type itself.
PR Close#30855
The compiler generates a 'token' field when it emits an ngInjectableDef,
but this field was not required by defineInjectable or the InjectableDef
interface, nor was it added by InjectionToken.
This commit makes 'token' required and adds it where missing.
PR Close#30855
17d87d4e10 has been created before the changes
to the `@ViewChild` and `@ContentChild` decorators. Meaning that it still uses the queries
without the `static` flag. This results in failures in `master` because #30625 has been merged.
PR Close#30967
`TView.firstChild` was defined as the first node with index 0, but when we use runtime i18n then the instruction `i18nStart` can be the one with index 0 and the first node will be index 1 or more.
With this fix we set `TView.firstChild` when we see the first node with index 0 or later if `TView.firstChild` is still null.
FW-1367 #resolve
PR Close#30920
This work is being done ahead of changes to how view insertion is done in Ivy in accordance with [this design document](https://hackmd.io/Ae3W_2pOQlKouu9YNy1t6A?view).
The idea is to make sure we have acceptance tests ahead of that change.
PR Close#30625
- Refactors compiler to stop generating `ɵɵselect(0)` instructions
- Alters template execution to always call the equivalent of `ɵɵselect(0)` before running a template in update mode
- Updates tests to not check for or call `ɵɵselect(0)`.
The goal here is to reduce the size of generated templates
PR Close#30830
The `renderStringify` function shows up pretty high in the CPU profiling.
Turns out that this function contained unnecessary `typeof` check for
function types - the check only makes sense / is used in error messages.
The PR also alligns how ivy and view engine stringify functions used in
interpolations.
PR Close#30838
In Ivy the `DebugNode.attributes` is populated directly from the DOM, but the problem is that the browser will lowercase all attribute names. These changes preserve the case by first going through the `TNode.attrs`, populating the map with the case-sensitive names and saving a reference to the lower case name. Afterwards when we're going through the attributes from the DOM, we can check whether we've mapped the attribute by its case-sensitive name already.
This PR resolves FW-1358.
PR Close#30864
A directive input that doesn't use a binding is triggered during the creation phase. But this was only executed at the first template pass, and not on subsequent ones.
Now only the creation of the update instruction is executed on the first template pass, anything else is executed every time a template is created.
FW-1361 #resolve
PR Close#30870
When translated content was projected, all of the content was reappended, even the placeholders that had been removed in the translation.
To avoid that we added a new flag on `TNode` that specifies that a node is detached, in which case it should be ignored by the projection.
FW-1319 #resolve
PR Close#30783
- Removes ɵɵelementProperty instruction
- Updates tests that were using it
- NOTE: There is one test under `render3/integration_spec.ts` that is commented out, and needs to be reviewed. Basically, I could not find a good why to test what it was doing, because it was doing things that I am not sure we could generate in an acceptance test.
PR Close#30645
Added a new syntax for projections (`¤` will represent `ng-content` nodes) so that we can treat them specifically.
When we enter an i18n block with the instruction `i18nStart`, a new `delayProjection` variable is set to true to prevent the instruction `projection` from projecting the nodes. Once we reach the `i18nEnd` instruction and encounter a projection in the translation we will project its nodes.
If a projection was removed from a translation, then its nodes won't be projected at all.
The variable `delayProjection` is restored to `false` at the end of `i18nEnd` so that it doesn't stop projections outside of i18n blocks.
FW-1261 #resolve
PR Close#30782
We used to ignore empty strings for optimization purposes, but it turns out that empty strings are also valid values for ICU cases and we shouldn't ignore those.
FW-1290 #resolve
PR Close#30846
Some HTML attributes don't correspond to their DOM property name, in which
case the runtime will apply the appropriate transformation when assigning
a property using its attribute name. One example of this is the `for`
attribute, for which the DOM property is named `htmlFor`.
The type-checking machinery in ngtsc must also take this mapping into
account, as it generates type-check code in which unclaimed property bindings
are assigned to properties of (subtypes of) `HTMLElement`.
Fixes#30607
Fixes FW-1327
PR Close#30675
Before this change we would systematically call LQueries.clone() when executting
elementStart / elementContainerStart instructions. This was often unnecessary as
LQueries can be mutated under 2 conditions only:
- we are crossing an element that has directives with content queries
(new queries must be added);
- we are descending into element hierarchy (creating a child element of an existing element)
and the current LQueries object is tracking shallow queries (shallow queries are removed).
With this PR LQueires.clone() is only done when needed and this gratelly reduces number
of LQueries object created: in the "expanding rows" benchmark number of allocated
(and often GCed just after!) LQueries is reduced from ~100k -> ~35k. This represents
over 1MB of memory that is not allocated.
PR Close#30664
Projecting bare ICU expressions failed because we would assume that component's content nodes would be projected later and doing so at that point would be wasteful. But ICU nodes are handled independently and should be inserted immediately because they will be ignored by projections.
FW-1348 #resolve
PR Close#30696
Inside of `DebugNode.queryAll` we walk through all of the descendants of the node that we're querying against, however the logic that walks sideways through a node siblings also applies to the root node. This means that eventually we'll match against its nodes as well which will give us invalid results. These changes add an extra check to ensure that we aren't matching against the siblings of the root node.
This PR resolves FW-1353.
PR Close#30788
With View engine it was possible to declare multiple projection
definitions and to programmatically project nodes into the slots.
e.g.
```html
<ng-content></ng-content>
<ng-content></ng-content>
```
Using `ViewContainerRef#createComponent` allowed projecting
nodes into one of the projection defs (through index)
This no longer works with Ivy as the `projectionDef` instruction only
retrieves a list of selectors instead of also retrieving entries for
reserved projection slots which appear when using the default
selector multiple times (as seen above).
In order to fix this issue, the Ivy compiler now passes all
projection slots to the `projectionDef` instruction. Meaning that
there can be multiple projection slots with the same wildcard
selector. This allows multi-slot projection as seen in the
example above, and it also allows us to match the multi-slot node
projection order from View Engine (to avoid breaking changes).
It basically ensures that Ivy fully matches the View Engine behavior
except of a very small edge case that has already been discussed
in FW-886 (with the conclusion of working as intended).
Read more here: https://hackmd.io/s/Sy2kQlgTE
PR Close#30561
Currently with Ivy, `ModuleWithProvider` providers are processed in order
of declaration in the `NgModule` imports. This technically makes makes
sense but is a potential breaking change as `ModuleWithProvider` providers
are processed after all imported modules in View Engine.
In order to keep the behavior of View Engine, the `r3_injector` is updated
to no longer process `ModuleWithProvider` providers egarly.
Resolves FW-1349
PR Close#30688
The "async" around a couple tests was removed because of the merge conflict in one of the previous commits (80394ce08b). This change restores missing "async"s.
PR Close#30762
fix(@schematics/angular): TypeScript related migrations should cater for BOM
In the CLI `UpdateRecorder` methods such as `insertLeft`, `remove` etc.. accepts positions which are not offset by a BOM. This is because when a file has a BOM a different recorder will be used https://github.com/angular/angular-cli/blob/master/packages/angular_devkit/schematics/src/tree/recorder.ts#L72 which caters for an addition offset/delta.
The main reason for this is that when a developer is writing a schematic they shouldn't need to compute the offset based if a file has a BOM or not and is handled out of the box.
Example
```ts
recorder.insertLeft(5, 'true');
```
However this is unfortunate in the case if a ts SourceFile is used and one uses `getWidth` and `getStart` method they will already be offset by 1, which at the end it results in a double offset and hence the problem.
Fixes#30713
PR Close#30719
Two issues with DebugNode/DebugElement in Ivy were causing problems in user
tests.
1. The DebugNodes returned by Ivy were not actually instances of DebugNode.
This was due to an issue with the Ivy switch logic in debug_node.ts.
The declaration of the exported DebugNode reference was set to
`DebugNode__PRE_R3__ as any`. The cast prevented the Ivy switch transform
from detecting this as a switchable declaration. The transform cannot handle
arbitrary syntax, and exports *must* be of the form "const x = y__PRE_R3__;"
or they will not work. The cast to any in this case was not needed, so this
commit removes it.
2. DebugNodes returned by Ivy multiple times for the same element were not
reference-identical. This was previously considered a minor breaking change
in Ivy, but testing has shown that users depend on referential equality of
DebugNodes. This commit caches a DebugNode on a DOM node when first creating
it, to allow returning the same instance in subsequent operations.
PR Close#30756
Due to sanitization being stored as a temp/global value between
instructions, unit tests randomly failed because one test failed
to clean up its temporary value. This patch fixes this issue.
`i18nAttributes` instructions always occur after the element instruction. This means that we need to treat `i18n-` attributes differently.
By defining a specific `AttributeMarker` we can ensure that we won't trigger directive inputs with untranslated attribute values.
FW-1332 #resolve
PR Close#30402
Changed runtime i18n to define attributes with bindings, or matching directive inputs/outputs as element properties as we are supposed to do in Angular.
This PR fixes the issue where directive inputs wouldn't be trigged.
FW-1315 #resolve
PR Close#30402
Commit 0df719a46 introduced registration of NgModules with ids when compiled
with AOT, and f74373f2d corrected the timing to avoid issues with tree
shaking. Neither of these approaches were correct.
This commit fixes the timing to match View Engine and avoid tree shaking
issues, as well as fixes a bug with the registration of imported module ids.
A new Ivy-only test is added which verifies that modules get registered
correctly under real-world conditions.
PR Close#30706
Paul Gschwendtner
Kristiyan Kostadinov
JoostK
Andrew Kushnir
Charles Lyding
cexbrayat
JiaLiPassion
Alan
Pawel Kozlowski
Keen Yee Liau
George Kalpakas
Martin Probst
Pete Bacon Darwin
Kara Erickson
atscott
Andrew Scott
Alan Agius
Matias Niemelä
Greg Magolan
Misko Hevery
thekiba
Filipe Silva
Carlos Ortiz García
Alex Rickabaugh
atscott
Judy Bogart
hafiz
Olivier Combe
Erik Pintar
Igor Minar
Momin Khan
nikz99
Joey Perrott
Umair Sarfraz
Santosh Yadav
Alex Eagle
Ben Lesh
Umberto Tarantino
Vikram Subramanian
Tim Deschryver