fix https://github.com/angular/components/issues/21674
When setting `ngZoneRunCoalescing` to true, `onStable` is not emitted correctly.
The reason is before this commit, the code looks like this
```
// Application code call `ngZone.run()`
ngZone.run(() => {}); // step 1
// Inside NgZone, in the OnInvoke hook, NgZone try to delay the checkStable()
function delayChangeDetectionForEvents(zone: NgZonePrivate) {
if (zone.lastRequestAnimationFrameId !== -1) { // step 9
return;
}
zone.lastRequestAnimationFrameId = zone.nativeRequestAnimationFrame.call(global, () => { // step 2
if (!zone.fakeTopEventTask) {
zone.fakeTopEventTask = Zone.root.scheduleEventTask('fakeTopEventTask', () => {
zone.lastRequestAnimationFrameId = -1; // step 3
updateMicroTaskStatus(zone); // step 4
checkStable(zone); // step 6
}, undefined, () => {}, () => {});
}
zone.fakeTopEventTask.invoke();
});
updateMicroTaskStatus(zone);
}
function updateMicroTaskStatus(zone: NgZonePrivate, ignoreCheckRAFId = false) {
if (zone._hasPendingMicrotasks ||
((zone.shouldCoalesceEventChangeDetection || zone.shouldCoalesceRunChangeDetection) &&
zone.lastRequestAnimationFrameId !== -1)) { // step 5
zone.hasPendingMicrotasks = true;
} else {
zone.hasPendingMicrotasks = false;
}
}
function checkStable(zone: NgZonePrivate) {
if (zone._nesting == 0 && !zone.hasPendingMicrotasks && !zone.isStable) { // step 7
try {
zone._nesting++;
zone.onMicrotaskEmpty.emit(null);
...
}
// application ref subscribe onMicroTaskEmpty
ngZone.onMicroTaskEmpty.subscribe(() => {
ngZone.run(() => { // step 8
tick();
});
});
```
And the process is:
1. step 1: application call ngZone.run()
2. step 2: NgZone delay the checkStable() call in a requestAnimationFrame, and also set
zone.lastRequestAnimationFrameId
3. step 3: Inside the requestAnimationFrame callback, reset zone.lastRequestAnimationFrameId first
4. step 4: update microTask status
5, step 5: if zone.lastRequestAnimationFrameId is -1, that means no microTask pending.
6. step 6: checkStable and trigger onMicrotaskEmpty emitter.
7. step 7: ApplicationRef subscribed onMicrotaskEmpty, so it will call another `ngZone.run()` to process
tick()
8. step 8: And this new `ngZone.run()` will try to check `zone.lastRequestAnimationFrameId` in `step 9`
when trying to delay the checkStable(), and since the zone.lastRequestAnimationFrameId is already reset
to -1 in step 3, so this ngZone.run() will run into step 2 again.
9. And become a infinite loop..., so onStable is never emit
In this commit, the `zone.lastRequestAnimationFrameId` reset is moved after `checkStable()` call.
PR Close#40540
They aim to improve code readability.
Since they are defined by `const enum` they have zero runtime performance impact
over just using constant literals.
Fixes#23543
PR Close#23548
When parsing interpolations, if we encounter an empty interpolation
(`{{}}`), the current code uses a "pretend" value of `$implicit` for the
name as if the interplotion were really `{{$implicit}}`. This is
problematic because the spans are then incorrect downstream since they
are based off of the `$implicit` text.
This commit changes the interpretation of empty interpolations so that
the text is simply an empty string.
Fixes https://github.com/angular/vscode-ng-language-service/issues/1077
Fixes https://github.com/angular/vscode-ng-language-service/issues/1078
PR Close#40583
Previously, we could not use `npm_package.pack` for building the Zone.js
package due to a bug in Windows. This bug has been fixed in version
2.3.0 of `bazelbuild/rules_nodejs`.
Now that we have updated `bazelbuild/rules_nodejs` to version 2.3.3
(in #40581) we can replace `npm pack` with `npm_package.pack`.
PR Close#40592
The codebase currently contains several `EMPTY_ARRAY` constants,
and they can end up in the bundle of an application.
A recent commit 6fbe219 tipped us off
as it introduced several `noop` occurrences in the golden symbol files.
After investigating with @petebacondarwin,
we decided to remove the duplicated symbols.
This probably shaves only a few bytes,
but this commit removes the duplicated functions,
by always using the one in `core/src/utils/empty`.
PR Close#40587
If the template parse option `leadingTriviaChars` is configured to
consider whitespace as trivia, any trailing whitespace of an element
would be considered as leading trivia of the subsequent element, such
that its `start` span would start _after_ the whitespace. This means
that the start span cannot be used to mark the end of the current
element, as its trailing whitespace would then be included in its span.
Instead, the full start of the subsequent element should be used.
To harden the tests that for the Ivy parser, the test utility `parseR3`
has been adjusted to use the same configuration for `leadingTriviaChars`
as would be the case in its production counterpart `parseTemplate`. This
uncovered another bug in offset handling of the interpolation parser,
where the absolute offset was computed from the start source span
(which excludes leading trivia) whereas the interpolation expression
would include the leading trivia. As such, the absolute offset now also
uses the full start span.
Fixes#39148
PR Close#40513
This commit adds a new `IncrementalResourceCompilationTicket` which reuses
an existing `NgCompiler` instance and updates it to optimally process
template-only and style-only changes. Performing this update involves both
instructing `DecoratorHandler`s to react to the resource changes, as well as
invalidating `TemplateTypeChecker` state for the component(s) in question.
That way, querying the `TemplateTypeChecker` will trigger new TCB generation
for the changed template(s).
PR Close#40561
To prepare for the optimization of template-only changes, this commit
refactors the `ComponentDecoratorHandler`'s handling of template parsing.
Previously, templates were extracted from the raw decorator metadata and
parsed in a single operation.
To better handle incremental template updates, this commit splits this
operation into a "declaration" step where the template info is extracted
from the decorator metadata, and a "parsing" step where the declared
template is read and parsed. This allows for re-reading and re-parsing of
the declared template at a future point, using the same template declaration
extracted from the decorator.
PR Close#40561
Previously, the incremental flow for NgCompiler was simple: when creating a
new NgCompiler instance, the consumer could pass state from a previous
compilation, which would cause the new compilation to be performed
incrementally. "Local" information about TypeScript files which had not
changed would be passed from the old compilation to the new and reused,
while "global" information would always be recalculated.
However, this flow could be made more efficient in certain cases, such as
when no TypeScript files are changed in a new compilation. In this case,
_all_ information extracted during the first compilation is reusable. Doing
this involves reusing the previous `NgCompiler` instance (the container for
such global information) and updating it, instead of creating a new one for
the next compilation. This approach works cleanly, but complicates the
lifecycle of `NgCompiler`.
To prevent consumers from having to deal with the mechanics of reuse vs
incremental steps of `NgCompiler`, a new `CompilationTicket` mechanism is
added in this commit. Consumers obtain a `CompilationTicket` via one of
several code paths depending on the nature of the incoming compilation, and
use the `CompilationTicket` to obtain an `NgCompiler` instance. This
instance may be a fresh compilation, a new `NgCompiler` for an incremental
compilation, or an existing `NgCompiler` that's been updated to optimally
process a resource-only change. Consumers can use the new `NgCompiler`
without knowledge of its provenance.
PR Close#40561
The Language Service uses the source span of AST nodes to recognize which
node a user has selected, given their cursor position in a template. This is
used to trigger autocompletion.
The previous source span of BindingPipe nodes created a problem when:
1) the pipe binding had no identifier (incomplete or in-progress expression)
2) the user typed trailing whitespace after the pipe character ('|')
For example, the expression `{{foo | }}`. If the cursor preceded the '}' in
that expression, the Language Service was unable to detect that the user was
autocompleting the BindingPipe expression, since the span of the BindingPipe
ended after the '|'.
This commit changes the expression parser to expand the span of BindingPipe
expressions with a missing identifier, to include any trailing whitespace.
This allows the Language Service to correctly recognize this case as
targeting the BindingPipe and complete it successfully. The `nameSpan` of
the BindingPipe is also moved to be right-aligned with the end of any
whitespace present in the pipe binding expression.
This change allows for the disabled test in the Language Service for pipe
completion in this case to be re-enabled.
PR Close#40346
The `LanguageServiceAdapter` must implement `realpath` in order to resolve
symlinks in `node_modules`.
Local libraries are often symlinked in `node_modules` by adding a local
dependency in `package.json`.
Fix https://github.com/angular/vscode-ng-language-service/issues/1083
PR Close#40593
This commit adds a warning in the Elements guide about using
`@Component.selector` as the tag name for the registered custom element.
See also #40452 for context.
PR Close#40510
Previously, in `_mismatch()`, the `DefaultIterableDiffer` first checks
`_linkedRecords` for `itemTrackBy`, then checks `_unlinkedRecords`.
This cause the `DefaultIterableDiffer` to move "later" items that match the
`itemTrackBy` from the old collection, rather than using the "earlier" one.
Now we check `_unlinkedRecords` first, so that the `DefaultIterableDiffer`
can give a more stable and reasonable result after diffing. For example,
rather than (`a1` and `a2` have same trackById)
```
a1 b c a2 => b a2 c a1
```
we get
```
a1 b c a2 => b a1 c a2
```
where a1 and a2 retain their original order despite both
having the same track by value.
Fixes#23815
PR Close#23941
Updates to rules_nodejs@2.3.3 to take advantage of windows specific fixes.
rules_nodejs@2.3.3 was created as a patch specifically with a fix for
the issues we found updating to rules_nodejs@2.2.2.
PR Close#40581
Update to the latest version of bazel.
`4.0.0` introduced a breaking change on unnecessary backslashes and these
instance are corrected in this change.
PR Close#40579
In older versions of `bazelbuild/rules_nodejs`, the `npm_package.pack`
rule does not work on Windows. This has been fixed in
bazelbuild/rules_nodejs#2257, but the fix is not available before
[version 2.3.0][1].
Currently, we use version 2.2.0 (see [WORKSPACE][2]). In order to allow
the `zone-js-builder.js` script to work on Windows, this commit switches
to using `npm pack` directly, intead of relying on `npm_package.pack`.
For reference, the version of `bazelbuild/rules_nodejs` was updated to
2.3.2 in PR #39636, but this was later reverted due to CI flakes
(4e6d69cc85).
[1]: https://github.com/bazelbuild/rules_nodejs/releases/tag/2.3.0
[2]: fc64fa8e1a/WORKSPACE (L12)
PR Close#40557
This is a follow up fix for
894286dd0c.
It turns out that comments can be closed in several ways:
- `<!-->`
- `<!-- -->`
- `<!-- --!>`
All of the above are valid ways to close comment per:
https://html.spec.whatwg.org/multipage/syntax.html#comments
The new fix surrounds `<` and `>` with zero width space so that it
renders in the same way, but it prevents the comment to be closed eagerly.
PR Close#40525
Previously, we were naïvely checking whether a function name was a partial linker
declaration call by testing the map of linkers with `linkers[name]`. Since
`linkers` was a plain object, it also matched function names like `toString`!
This has been refactored as a `Map` to avoid the problem.
PR Close#40563
This PR adds a way for the language server to retrieve compiler options
diagnostics via `languageService.getCompilerOptionsDiagnostics()`.
This will be used by the language server to show a prompt in the editor if
users don't have `strict` or `fullTemplateTypeCheck` turned on.
Ref https://github.com/angular/vscode-ng-language-service/issues/1053
PR Close#40423
Prior to this commit, the `patchValue()` of the `FormGroup` and `FormArray` classes used to throw an exception
when the `value` argument contained a data structure that has `null` or `undefined` as a value for a field
that represents an instance of `FormGroup` or `FormArray` (for `FormControl` it's not a problem, since it
doesn't have nested controls), since the `patchValue()` method tried to iterate over provided values to
match current data structure.
This commit updates the `patchValue()` logic in `FormGroup` and `FormArray` classes to just ignore `null` and
`undefined` values (without any changes to corresponding `FormGroup` and `FormArray` instances). This
behavior looks inline with the `patchValue()` method goal of "doing its best to match the values to the
correct controls" (quote from docs).
Fixes#36672.
Fixes#21021.
PR Close#40534
PR #39235 introduced additional cleanup logic for form controls and directives. The cleanup logic relies
on the presence of ControlValueAccessor instances on FormControlName and FormControl directives. In general
these fields are present and there are also checks to make sure that the mentioned directive instances are
created with CVAs. However some scenarios (primarily tests) may invoke the logic in a way that the directive
instance would not be fully initialized, thus causing CVA to be absent. As a result, the cleanup logic fails
while trying to call some methods on associated CVA instances.
This commit updates the cleanup logic to take into account the situation when CVA is not present.
Fixes#40521.
PR Close#40526
The ARB format doesn't have a dedicated field for message meaning so these changes include it
as a customize attribute called `x-meaning`.
Fixes#40506.
PR Close#40546
The compliance test runner has various macros that process the
expectation files before actually checking their contents. Among those
macros are i18n helpers, which uses a global message counter to be able
to uniquely identify ICU variables.
Because of the global nature of this message index, it was susceptible
to ordering issues which could result in flaky tests, although it failed
very infrequently.
This commit resets the global message counter before applying the macros.
As a result of this change an expectation file had to be updated; this
is actually a bug fix as said test used to fail if run in isolation (if
`focusTest: true` was set for that particular testcase).
PR Close#40529
Write to the unique log file, to prevent being overwritten, for `FATAL_ERROR`
failures in the release tooling. This will help to assist in determining where
something goes wrong in the process as well as being able to resume the action.
PR Close#40524
Add support for a `--no-branch-prompt` flag for the `ng-dev pr merge` tool. This
flag enables suppression of the confirmation prompt for which branches the specified
PR will merge into.
PR Close#40528
When migrating zone.js from gulp to bazel, some legacy build config files are still there,
we have `rollup-es5.config.js` and `rollup-es5_global-es2015.config.js`, since in gulp build
system, build `es5` or `esm` files are set in the config file, but in the bazel world,
the output format is not config in the config.js file, but is required by the downstream
bazel target. So we don't really need the two rollup config files any longer.
Another difference is in `rollup-es5.config.js`, the `external` and `global` libraries names
are also config there, and these settings are also valid for `es2015` build, these settings
are not in the `es2015.config.js` for some legacy reasons. So we don't need to keep this
difference either.
PR Close#40481
This commit reverts commit [_fix(service-worker): handle error with
ErrorHandler_](https://github.com/angular/angular/pull/39990/commits/552419d).
With Angular v11.0.4 and commit [_fix(service-worker): handle error with
ErrorHandler_](https://github.com/angular/angular/pull/39990/commits/552419d)
Angular start to send all service worker registration errors to the Angular
standard `ErrorHandler#handleError()` interface, instead of logging them in the
console.
But users existing `ErrorHandler#handleError()` implementations are not adapted
to service worker registration errors and it might result in broken apps or
bad UI.
Passing to `ErrorHandler` is desirable for some and undesirable for others and
the same is true for passing to `console.error()`.
But `console.error()` was used for a long time and thus it is preferable to keep
it as long as a good solution is not found with `ErrorHandler`.
Right now it's hard to define a good solution for `ErrorHandler` because:
1. Given the nature of the SW registration errors (usually outside the control
of the developer, different error messages on each browser/version, often
quite generic error messages, etc.), passing them to the `ErrorHandler` is
not particularly helpful.
2. While `ErrorHandler#handleError()` accepts an argument of type `any` (so
theoretically we could pass any object without changing the public API), most
apps expect an `Error` instance, so many apps could break if we changed the
shape.
3. Ideally, the Angular community want to re-think the `ErrorHandler` API
and add support for being able to pass additional metadata for each error
(such as the source of the error or some identifier, etc.). This change,
however, could potentially affect many apps out there, so the community must
put some thought into it and design it in a way that accounts for the needs
of all packages (not just the SW).
4. Given that we want to more holistically revisit the `ErrorHandler` API, any
changes we make in the short term to address the issue just for the SW will
make it more difficult/breaky for people to move to a new API in the future.
To see the whole explanation see GitHub PR #40236.
PR Close#40236
Pete Bacon Darwin
Teri Glover
JiaLiPassion
Misko Hevery
Quentin Focheux
Andrew Scott
Joey Perrott
George Kalpakas
cexbrayat
JoostK
Joey Perrott
Jessica Janiuk
Alex Rickabaugh
Keen Yee Liau
Sirui Chen
S. Iftekhar Hossain
Wataru.Kasahara
Alan Agius
Andrew Kushnir
Kristiyan Kostadinov
Hoel IRIS
Newsha Hosseiny Nik
Nejc Zdovc