Similarly to the change we landed in the `@angular/core` reflection
capabilities, we need to make sure that ngcc can detect pass-through
delegate constructors for classes using downleveled ES2015 output.
More details can be found in the preceding commit, and in the issue
outlining the problem: #38453.
Fixes#38453.
PR Close#38500
In the Angular Package Format, we always shipped UMD bundles and previously even ES5 module output.
With V10, we removed the ES5 module output but kept the UMD ES5 output.
For this, we were able to remove our second TypeScript transpilation. Instead we started only
building ES2015 output and then downleveled it to ES5 UMD for the NPM packages. This worked
as expected but unveiled an issue in the `@angular/core` reflection capabilities.
In JIT mode, Angular determines constructor parameters (for DI) using the `ReflectionCapabilities`. The
reflection capabilities basically read runtime metadata of classes to determine the DI parameters. Such
metadata can be either stored in static class properties like `ctorParameters` or within TypeScript's `design:params`.
If Angular comes across a class that does not have any parameter metadata, it tries to detect if the
given class is actually delegating to an inherited class. It does this naively in JIT by checking if the
stringified class (function in ES5) matches a certain pattern. e.g.
```js
function MatTable() {
var _this = _super.apply(this, arguments) || this;
```
These patterns are reluctant to changes of the class output. If a class is not recognized properly, the
DI parameters will be assumed empty and the class is **incorrectly** constructed without arguments.
This actually happened as part of v10 now. Since we downlevel ES2015 to ES5 (instead of previously
compiling sources directly to ES5), the class output changed slightly so that Angular no longer detects
it. e.g.
```js
var _this = _super.apply(this, __spread(arguments)) || this;
```
This happens because the ES2015 output will receive an auto-generated constructor if the class
defines class properties. This constructor is then already containing an explicit `super` call.
```js
export class MatTable extends CdkTable {
constructor() {
super(...arguments);
this.disabled = true;
}
}
```
If we then downlevel this file to ES5 with `--downlevelIteration`, TypeScript adjusts the `super` call so that
the spread operator is no longer used (not supported in ES5). The resulting super call is different to the
super call that would have been emitted if we would directly transpile to ES5. Ultimately, Angular no
longer detects such classes as having an delegate constructor -> and DI breaks.
We fix this by expanding the rather naive RegExp patterns used for the reflection capabilities
so that downleveled pass-through/delegate constructors are properly detected. There is a risk
of a false-positive as we cannot detect whether `__spread` is actually the TypeScript spread
helper, but given the reflection patterns already make lots of assumptions (e.g. that `super` is
actually the superclass, we should be fine making this assumption too. The false-positive would
not result in a broken app, but rather in unnecessary providers being injected (as a noop).
Fixes#38453
PR Close#38500
This commit introduces a new subscription in the `routerLinkActive` directive which triggers an update
when any of its associated routerLinks have changes. `RouterLinkActive` not only needs to know when
links are added or removed, but it also needs to know about if a link it already knows about
changes in some way.
Quick note that `from...mergeAll` is used instead of just a simple
`merge` (or `scheduled...mergeAll`) to avoid introducing new rxjs
operators in order to keep bundle size down.
Fixes#18469
PR Close#38349
Now that Ivy compiler has a proper `TemplateTypeChecker` interface
(see https://github.com/angular/angular/pull/38105) we no longer need to
keep the temporary compiler implementation.
The temporary compiler was created to enable testing infrastructure to
be developed for the Ivy language service.
This commit removes the whole `ivy/compiler` directory and moves two
functions `createTypeCheckingProgramStrategy` and
`getOrCreateTypeCheckScriptInfo` to the `LanguageService` class.
Also re-enable the Ivy LS test since it's no longer blocking development.
PR Close#38310
This commit fixes a regression from "fix(common): ensure
scrollRestoration is writable (#30630)" that caused scrolling to not
happen at all in browsers that do not support scroll restoration. The
issue was that `supportScrollRestoration` was updated to return `false`
if a browser did not have a writable `scrollRestoration`. However, the
previous behavior was that the function would return `true` if
`window.scrollTo` was defined. Every scrolling function in the
`ViewportScroller` used `supportScrollRestoration` and, with the update
in bb88c9fa3daac80086efbda951d81c159e3840f4, no scrolling would be
performed if a browser did not have writable `scrollRestoration` but
_did_ have `window.scrollTo`.
Note, that this failure was detected in the saucelabs tests. IE does not
support scroll restoration so IE tests were failing.
PR Close#38468
When removal of one view causes removal of another one from the same
ViewContainerRef it triggers an error with views length calculation. This commit
fixes this bug by removing a view from the list of available views before invoking
actual view removal (which might be recursive and relies on the length of the list
of available views).
Fixes#38201.
PR Close#38317
This commit replaces the old and slow `ReflectiveInjector` that was
deprecated in v5 with the new `Injector`. Note: This change was only
done in the spec files inside the `aio` folder.
While changing this, it was not possible to directly use `Injector.get`
to get the correct typing for the mocked classes. For example:
```typescript
locationService = injector.get<TestLocationService>(LocationService);
```
Fails with:
> Argument of type 'typeof LocationService' is not assignable to parameter
of type 'Type<TestLocationService> | InjectionToken<TestLocationService> |
AbstractType<TestLocationService>'.
Type 'typeof LocationService' is not assignable to type 'Type<TestLocationService>'.
Property 'searchResult' is missing in type 'LocationService' but required in type
'TestLocationService'.
Therefore, it was necessary to first convert to `unknown` and then to
`TestLocationService`.
```typescript
locationService = injector.get(LocationService) as unknown as TestLocationService;
```
PR Close#38408
Previously we added a browser target for `firefox` into the
dev-infra package. It looks like as part of this change, we
accidentally switched the local web testing target to `firefox`.
Web tests are not commonly run locally as we use Domino and
NodeJS tests for primary development. Sometimes though we intend
to run tests in a browser. This would currently work with Firefox
but not on Windows (as Firefox is a noop there in Bazel).
This commit switches the primary browser back to `chromium`. Also
Firefox has been added as a second browser to web testing targets.
This allows us to reduce browsers in the legacy Saucelabs job. i.e.
not running Chrome and Firefox there. This should increase stability
and speed up the legacy job (+ reduced rate limit for Saucelabs).
PR Close#38435
PR Close#38450
Firefox ESR tests fail running the acceptance tests on saucelabs. These tests are being
disabled while investigating the failure as it is not entirely clear whether this is
saucelabs failure or a something like a memory pressure error in the test itself.
PR Close#37647
PR Close#38450
We should define ngDevMode to false in Closure, but --define only works in the global scope.
With ngDevMode not being set to false, this size tracking test provides little value but a lot of
headache to continue updating the size.
PR Close#38449
The `@HostListener` functions and lifecycle hooks aren't intended to be public API but
do need to appear in the `.d.ts` files or type checking will break. Adding the
nodoc annotation will correctly hide this function on the docs site.
Again, note that `@internal` cannot be used because the result would be
that the functions then do not appear in the `.d.ts` files. This would
break lifecycle hooks because the class would be seen as not
implementing the interface correctly. This would also break
`HostListener` because the compiled templates would attempt to call the
`onClick` functions, but those would also not appear in the `d.ts` and
would produce errors like "Property 'onClick' does not exist on type 'RouterLinkWithHref'".
PR Close#38448
Fixes an error if a CSS custom property, used inside a host binding, has a
number in its name. The error is thrown because the styling parser only
expects characters from A to Z,dashes, underscores and a handful of other
characters.
Fixes#37292.
PR Close#38432
Previously commit message types were provided as part of the ng-dev config in the repository
using the ng-dev toolset. This change removes this configuration expectation and instead
predefines the valid types for commit messages.
Additionally, with this new unified set of types requirements around providing a scope have
been put in place. Scopes are either required, optional or forbidden for a given commit
type.
PR Close#38430
We recently updated the benchpress package to have a more loose
Angular core peer dependency, and less other unused dependencies.
We should make sure to use that in the dev-infra package so that
peer dependencies can be satisified in consumer projects, and so
that less unused dependencies are brought into projects.
PR Close#38440
When a commit message fails validation, rather than throwing out the commit message entirely
the commit message is saved into a draft file and restored on the next commit attempt.
PR Close#38304
Runs the `ng-dev format changed` command whenever the `git commit` command is
run. As all changes which are checked by CI will require this check passing, this
change can prevent needless roundtrips to correct lint/formatting errors. This
automatic formatting can be bypassed with the `--no-verify` flag on the `git commit`
command.
PR Close#38402
Adds an ng-dev formatter option to format all of the staged files. This will can
be used to format only the staged files during the pre-commit hook.
PR Close#38402
In TypeScript 3.8 support was added for type-only imports, which only brings in
the symbol as a type, not their value. The Angular compiler did not yet take
the type-only keyword into account when representing symbols in type positions
as value expressions. The class metadata that the compiler emits would include
the value expression for its parameter types, generating actual imports as
necessary. For type-only imports this should not be done, as it introduces an
actual import of the module that was originally just a type-only import.
This commit lets the compiler deal with type-only imports specially, preventing
a value expression from being created.
Backports #37912 to patch
PR Close#38415
Currently the Closure-related tests are not tree-shaking the dev-mode-only content, thus payload
size checks are failing even if dev-mode-only content is added.
The 2e9fdbde9e commit
added some logic to JIT compiler, which is likely triggered the payload size increase. This commit
updates the payload size limits for Closure-related test to get master and patch branches back to
the "green" state.
PR Close#38411
"Quote expressions" are expressions that start with an identifier followed by a
comma, allowing arbitrary syntax to follow. These kinds of expressions would
throw a an error in the template type checker, which would make them hard to
track down. As quote expressions are not generally used at all, the error would
typically occur for URLs that would inadvertently occur in a binding:
```html
<a [href]="https://example.com"></a>
```
This commit lets such bindings be inferred as the `any` type.
Fixes#36568
Resolves FW-2051
PR Close#37917
When using the safe navigation operator in a binding expression, a temporary
variable may be used for storing the result of a side-effectful call.
For example, the following template uses a pipe and a safe property access:
```html
<app-person-view [enabled]="enabled" [firstName]="(person$ | async)?.name"></app-person-view>
```
The result of the pipe evaluation is stored in a temporary to be able to check
whether it is present. The temporary variable needs to be declared in a separate
statement and this would also cause the full expression itself to be pulled out
into a separate statement. This would compile into the following
pseudo-code instructions:
```js
var temp = null;
var firstName = (temp = pipe('async', ctx.person$)) == null ? null : temp.name;
property('enabled', ctx.enabled)('firstName', firstName);
```
Notice that the pipe evaluation happens before evaluating the `enabled` binding,
such that the runtime's internal binding index would correspond with `enabled`,
not `firstName`. This introduces a problem when the pipe uses `WrappedValue` to
force a change to be detected, as the runtime would then mark the binding slot
corresponding with `enabled` as dirty, instead of `firstName`. This results
in the `enabled` binding to be updated, triggering setters and affecting how
`OnChanges` is called.
In the pseudo-code above, the intermediate `firstName` variable is not strictly
necessary---it only improved readability a bit---and emitting it inline with
the binding itself avoids the out-of-order execution of the pipe:
```js
var temp = null;
property('enabled', ctx.enabled)
('firstName', (temp = pipe('async', ctx.person$)) == null ? null : temp.name);
```
This commit introduces a new `BindingForm` that results in the above code to be
generated and adds compiler and acceptance tests to verify the proper behavior.
Fixes#37194
PR Close#37911
In JIT compiled apps, component definitions are compiled upon first
access. For a component class `A` that extends component class `B`, the
`B` component is also compiled when the `InheritDefinitionFeature` runs
during the compilation of `A` before it has finalized. A problem arises
when the compilation of `B` would flush the NgModule scoping queue,
where the NgModule declaring `A` is still pending. The scope information
would be applied to the definition of `A`, but its compilation is still
in progress so requesting the component definition would compile `A`
again from scratch. This "inner compilation" is correctly assigned the
NgModule scope, but once the "outer compilation" of `A` finishes it
would overwrite the inner compilation's definition, losing the NgModule
scope information.
In summary, flushing the NgModule scope queue could trigger a reentrant
compilation, where JIT compilation is non-reentrant. To avoid the
reentrant compilation, a compilation depth counter is introduced to
avoid flushing the NgModule scope during nested compilations.
Fixes#37105
PR Close#37795
The changes in https://github.com/angular/angular/pull/38368 split `render3/i18n.ts` files into
smaller scripts, but the PullApprove config was not updated to reflect that. This commit updates
the PullApprove config to reflect the recent changes in i18n-related files.
PR Close#38403
Queries weren't matching directives that provide themselves via string
injection tokens, because the assumption was that any string passed to
a query decorator refers to a template reference.
These changes make it so we match both template references and
providers while giving precedence to the template references.
Fixes#38313.
Fixes#38315.
PR Close#38321
When we were outputting class members for `setClassMetadata` calls,
we were using the string representation of the member name. This can
lead to us generating invalid code when the name contains dashes and
is quoted (e.g. `@Output() 'has-dashes' = new EventEmitter()`), because
the quotes will be stripped for the string representation.
These changes fix the issue by using the original name AST node that was
used for the declaration and which knows whether it's supposed to be
quoted or not.
Fixes#38311.
PR Close#38387
This commit contains no changes to code. It only breaks `i18n.ts` file
into `i18n.ts` + `i18n_apply.ts` + `i18n_parse.ts` +
`i18n_postprocess.ts` for easier maintenance.
PR Close#38368
When a ServerStylesHost instance is destroyed, all of the shared styles added to the DOM
head element by that instance should be removed. Without this removal, over time a large
number of style rules will build up and cause extra memory pressure. This brings the
ServerStylesHost in line with the DomStylesHost used by the platform browser, which
performs this same cleanup.
PR Close#38367
The currently selected ICU was incorrectly being stored it `TNode`
rather than in `LView`.
Remove: `TIcuContainerNode.activeCaseIndex`
Add: `LView[TIcu.currentCaseIndex]`
PR Close#38345
This commit performs minor refactoring in Forms package to get rid of duplicate functions.
It looks like the functions were duplicated due to a slightly different type signatures, but
their logic is completely identical. The logic in retained functions remains the same and now
these function also accept a generic type to achieve the same level of type safety.
PR Close#38380
This commit uses getElementById and getElementsByName when an anchor scroll happens,
to avoid escaping the anchor and wrapping the code in a try/catch block.
Related to #28960
PR Close#38372
This change provides better typing for the `LView.debug` property which
is intended to be used by humans while debugging the application with
`ngDevMode` turned on.
In addition this chang also adds jasmine matchers for better asserting
that `LView` is in the correct state.
PR Close#38359
Extract `icuSwitchCase`, `icuUpdateCase`, `removeNestedIcu` into
separate functions to align them with the `.debug` property text.
PR Close#38154
PR Close#38370
