This commit introduces a mechanism for incremental compilation to the ngtsc
compiler.
Previously, incremental information was used in the construction of the
ts.Program for subsequent compilations, but was not used in ngtsc itself.
This commit adds an IncrementalState class, which tracks state between ngtsc
compilations. Currently, this supports skipping the TypeScript emit step
when the compiler can prove the contents of emit have not changed.
This is implemented for @Injectables as well as for files which don't
contain any Angular decorated types. These are the only files which can be
proven to be safe today.
See ngtsc/incremental/README.md for more details.
PR Close#29380
This commit adds support for compiling the same program repeatedly in a way
that's similar to how incremental builds work in a tool such as the CLI.
* support is added to the compiler entrypoint for reuse of the Program
object between compilations. This is the basis of the compiler's
incremental compilation model.
* support is added to wrap the CompilerHost the compiler creates and cache
ts.SourceFiles in between compilations.
* support is added to track when files are emitted, for assertion purposes.
* an 'exclude' section is added to the base tsconfig to prevent .d.ts
outputs from the first compilation from becoming inputs to any subsequent
compilations.
PR Close#29380
This commit adds a `tracePerformance` option for tsconfig.json. When
specified, it causes a JSON file with timing information from the ngtsc
compiler to be emitted at the specified path.
This tracing system is used to instrument the analysis/emit phases of
compilation, and will be useful in debugging future integration work with
@angular/cli.
See ngtsc/perf/README.md for more details.
PR Close#29380
Currently, ngtsc decides to use remote scoping if the compilation of a
component may create a cyclic import. This happens if there are two
components in a scope (say, A and B) and A directly uses B. During
compilation of B ngtsc will then note that if B were to use A, a cycle would
be generated, and so it will opt to use remote scoping for B.
ngtsc already uses the R3TargetBinder to correctly track the imports that
are actually required, for future cycle tracking. This commit expands that
usage to not trigger remote scoping unless B actually does consume A in its
template.
PR Close#29404
Prior to this change, if a navigation was ongoing and a new one came in, the router could get into a state where `router.currentNavigation` was `null` even though a navigation was executing. This change moves where we set the `currentNavigation` value so it's inside a `switchMap`. This solves the problem because the `finally` on the `switchMap` had been setting `currentNavigation` to `null` but the new `currentNavigation` value would have already been set. Essentially this was a timing problem and is resolved with this change.
Fixes#29389#29590
PR Close#29636
Sometimes (especially on mobile browsers on SauceLabs) the script may
fail to load due to a temporary issue with the internet connection. To
avoid flakes on CI when this happens, we retry the download after some
delay.
Related to #28578.
PR Close#29603
Queries can also be statically accessed within getters. e.g.
```ts
ngOnInit() {
this.myQueryGetter.doSomething();
}
```
In that case we need to check if the `myQueryGetter` definition accesses
a query statically. As we need to use the type checker for every property acess
within lifecylce hooks, the schematic might become slower than before, but considering
that this is a one-time execution, it is totally fine using the type-checker extensively.
PR Close#29609
When an anchor scroll happens, we run document.querySelector. This value can be taken directly from the user. Therefore it's possible to throw an error on scrolling, which can cause the application to fail.
This PR escapes the selector before using it.
Related to #28193
[Internal discussion](https://groups.google.com/a/google.com/forum/#!topic/angular-users/d82GHfmRKLc)
PR Close#29577
Previously we were using absolute paths, but since at rendering time
we do not know exactly where the file will be written it is more correct
to change to using relative paths. This is actually better all round
since it allows the folders to be portable to different machines, etc.
PR Close#29556
We have already removed this concept from the public API. This just cleans it out altogether.
The `targetPath` was an alternative output path to the original `basePath`.
This is not really a very useful concept, since the actual target path
of each output file is more complex and not consistently relative to the `basePath`.
PR Close#29556
- Adds `property` instruction
- Does _NOT_ add compiler changes to accommodate `property` instruction, that will be a follow up PR.
- Updates `select` instruction to set the selected index in state.
- Adds dev mode assertions around the selected index state.
Related #29527
PR Close#29513
When an @NgModule is imported more than once in the testing module (for
example it appears in the imports of more than one module, or if it's
literally listed multiple times), then TestBed had a bug where the
providers for the module would be overridden many times.
This alone was problematic but would not break tests. However, the original
value of the providers field of the ngInjectorDef was saved each time, and
restored in the same order. Thus, if the provider array was [X], and
overrides were applied twice, then the override array would become
[X, X'] and then [X, X', X, X']. However, on the second override the state
[X, X'] would be stored as original. The array would then be restored to
[X] and then [X, X'].
Each test, therefore, would continue to double the size of the providers
array for the module, eventually exhausting the browser's memory.
This commit adds a Set to track when overrides have been applied to a module
and refrain from applying them more than once.
PR Close#29571
Prior to this change, recompilation of AOT-compiled components in TestBed may fail when template override is requested. That was happening due to the `styleUrls` field defined for a Component, thus switching its state to "requires resolution" (i.e. having external resources) at compile time. This change avoids this issue by storing styles and resetting `styleUrls` field before recompilation. Once compilation is done, saved styles are patched back onto Component def.
PR Close#29555
- Adds `property` instruction
- Does _NOT_ add compiler changes to accommodate `property` instruction, that will be a follow up PR.
- Updates `select` instruction to set the selected index in state.
- Adds dev mode assertions around the selected index state.
Related #29527
PR Close#29513
Currently when building an Angular project with `ngtsc`
and `flatModuleOutFile` enabled, the Ngtsc build will fail
if there are multiple source files as root file names.
Ngtsc and NGC currently determine the entry-point for multiple
root file names by looking for files ending with `/index.ts`.
This functionality is technically deprecated, but still supported
and currently breaks on Windows as the root file names are not
guaranteed to be normalized POSIX-like paths.
In order to make this logic more reliable in the future, this commit
also switches the shim generators and entry-point logic to the branded
path types. This ensures that we don't break this in the future.
PR Close#29453
forEach is slower as compared to a regular loop but more importantly
this change removes an anonymous function and thus makes stack traces
shorter and easier to read (important for perf analysis).
PR Close#29543
This commit removes code duplication where we had 2 versions of a
`flatten` utility. Moreover this change results in queries using
a non-recursive version of `flatten` which should result in a better
performance of query refresh operations.
PR Close#29547
clarify scrollPositionRestoration enabled to fully describe the functionality it provides. refactor app module example to compile and remove dependency on unnecessary framework. Remove component example due to bug on reload.
PR Close#29260
Prior to this change, Ivy version of TestBed was not designed to support the logic to avoid recompilations - most of the Components/Directives/Pipes were recompiled for each test, even if there were no overrides defined for a given Type. Additional checks to avoid recompilation were introduced in one of the previous commits (0244a2433e), but there were still some corner cases that required attention. In order to support the necessary logic better, Ivy TestBed was rewritten/refactored. Main results of this rewrite are:
* no recompilation for Components/Directives/Pipes without overrides
* the logic to restore state between tests (isolate tests) was improved
* transitive scopes calculation no longer performs recompilation (it works with compiled defs)
As a result of these changes we see reduction in memory consumption (3.5-4x improvement) and pefromance increase (4-4.5x improvement).
PR Close#29483
* fixes prodmode issue in integration/bazel
BREAKING CHANGE:
@bazel/typescript is now a peerDependency of @angular/bazel so user's of @angular/bazel must add @bazel/typescript to their package.json
PR Close#29508
The API changes are due to enabling strict checks in TypeScript (via `strict: true`).
The payload size changes in `polyfills.js` are due to more browser APIs being patched in recent versions (e.g. `fetch`, `customElement v1`).
PR Close#28219
In View Engine, we used to generate empty QueryLists for content queries on root
components (though we did not actually support populating these lists). We need
to keep this behavior in Ivy for backwards compatibility. Otherwise, components
that are sometimes used as root will fail if they are relying on content query
results to always be defined.
PR Close#29514
With 093dc915ae9ad92a3baa602eb7cb7862ca4b6734, Firefox has been updated
to the latest available version within Saucelabs. Firefox added shadow DOM support
in Firefox 63 and therefore the shadow dom test in `platform-browser` now runs as well.
This test currently fails because Firefox does not support computed style property
shorthands. In order to make this test work on Firefox now, we just switch from `border`
to `background` (because of the overhead when comparing each `top`, `bottom`, `left`, `right`-border properties)
PR Close#29518
In some cases ivy expects projectable nodes to be passed in a different order
to ViewEngine. Specifically, ivy expects the catch-all ("*") to be at index
0, whereas ViewEngine expects it to be at its position at which it was parsed
in the template.
This commit adds one test that breaks under ivy and others that just describe
more accurately what happens in corner cases.
PR Close#27791
ivy's bindingUpdated instruction is using the assertNotEqual check to make
sure that NO_CHANGE value (of type Object) is not passed as a value to be
dirty-checked. In practice it means that any value passed as a binding
value would be compared to the NO_CHANGE object.
It turns out that the assertNotEqual is using == and given
that binding values are of different type and we always compare it to the
NO_CHANGE object we were doing lots of type coercion. It resulted in calls
to expensive types conversions and calls to Object.toString().
A profiler reported ~15% of the self time spent in the assertNotEqual
but it turns out that removing type coercion speeds up Material Chips with
input scenario much more (~40ms down to ~20ms).
This PR introduces new assert method `assertNotSame` that uses strict equality
check. The new assertion is used in binding instructions to compare to
NO_CHANGE object reference.
PR Close#29470
The router loadChildren property already supports a promise that returns a NgModuleFactory, but the typings cause the compilation to fail.
PR Close#29392
Queries can be also used statically within the "ngDoCheck" and "ngOnChanges" lifecylce hook.
In order to properly detect all queries, we need to also respect these lifecycle hooks.
Resolves FW-1192
PR Close#29492
In ReflectionCapabilities, when checking for own parameters of a type, inherit the types properly for classes that do have a constructor, but the constructor takes no declared parameters and just delegates to super(...arguments). This removes the need to declare trivial constructors in such classes to make them work properly in JIT mode. Without this, DI fails and injectables are undefined.
PR Close#29232
This fix corrects a bug where we were passing a binding _value_
in place of an expected binding index. This reulted in the binding
value being compared to an array length and buggy type coercion.
Fixing this bug speeds up test scenario by ~10-15%.
PR Close#29476
Previously, several `ngtsc` and `ngcc` APIs dealing with class
declaration nodes used inconsistent types. For example, some methods of
the `DecoratorHandler` interface expected a `ts.Declaration` argument,
but actual `DecoratorHandler` implementations specified a stricter
`ts.ClassDeclaration` type.
As a result, the stricter methods would operate under the incorrect
assumption that their arguments were of type `ts.ClassDeclaration`,
while the actual arguments might be of different types (e.g. `ngcc`
would call them with `ts.FunctionDeclaration` or
`ts.VariableDeclaration` arguments, when compiling ES5 code).
Additionally, since we need those class declarations to be referenced in
other parts of the program, `ngtsc`/`ngcc` had to either repeatedly
check for `ts.isIdentifier(node.name)` or assume there was a `name`
identifier and use `node.name!`. While this assumption happens to be
true in the current implementation, working around type-checking is
error-prone (e.g. the assumption might stop being true in the future).
This commit fixes this by introducing a new type to be used for such
class declarations (`ts.Declaration & {name: ts.Identifier}`) and using
it consistently throughput the code.
PR Close#29209
Previously, it was not possible to have multiple apps (using
`@angular/service-worker`) on different subpaths of the same domain,
because each SW would overwrite the caches of the others (even though
their scope was different).
This commit fixes it by ensuring that the cache names created by the SW
are different for each scope.
Fixes#21388
PR Close#27080
The tests will not be run anyway, so the artifacts are never used and
there might be errors if creating the testing artifacts relies on APIs
that are not available in that environment (e.g. `URL`).
PR Close#27080
Previously, only directives and services with generic type parameters
would emit `any` as generic type when emitting Ivy metadata into .d.ts
files. Pipes can also have generic type parameters but did not emit
`any` for all type parameters, resulting in the omission of those
parameters which causes compilation errors.
This commit adds support for pipes with generic type arguments and emits
`any` as generic type in the Ivy metadata.
Fixes#29400
PR Close#29403
This commit adds a `NewEntryPointFileWriter` that will be used in
webpack integration. Instead of overwriting files in-place, this `FileWriter`
will make a copy of the TS program files and write the transformed files
there. It also updates the package.json with new properties that can be
used to access the new entry-point format.
FW-1121
PR Close#29092
If `targetEntryPointPath` is provided to `mainNgcc` then we will now mark all
the `propertiesToConsider` for that entry-point if we determine that
it does not contain code that was compiled by Angular (for instance it has
no `...metadata.json` file).
The commit also renames `__modified_by_ngcc__` to `__processed_by_ivy_ngcc__`, since
there may be entry-points that are marked despite ngcc not actually compiling anything.
PR Close#29092
Now we check the build-marker version for all the formats
rather than just the one we are going to compile.
This way we don't get into the situation where one format was
built with one version of ngcc and another format was built with
another version.
PR Close#29092
Now the public API does not contain internal types, such as `AbsoluteFsPath` and
`EntryPointJsonProperty`. Instead we just accept strings and then guard them in
`mainNgcc` as appropriate.
A new public API function (`hasBeenProcessed`) has been exported to allow programmatic
checking of the build marker when the package.json contents are already known.
PR Close#29092
Previously we always considered all the properties in the package.json
if no `propertiesToConsidere` were provided.
But this results in computing a new set of properties for each entry-point
plus iterating through many of the package.json properties that are
not related to bundle-format paths.
PR Close#29092
Sometimes, in ESM5 code, aliases to exported variables are used internally
to refer to the exported value. This prevented some analysis from being
able to match up a reference to an export to the actual export itself.
For example in the following code:
```
var HttpClientXsrfModule = /** @class */ (function () {
function HttpClientXsrfModule() {
}
HttpClientXsrfModule_1 = HttpClientXsrfModule;
HttpClientXsrfModule.withOptions = function (options) {
if (options === void 0) { options = {}; }
return {
ngModule: HttpClientXsrfModule_1,
providers: [],
};
};
var HttpClientXsrfModule_1;
HttpClientXsrfModule = HttpClientXsrfModule_1 = tslib_1.__decorate([
NgModule({
providers: [],
})
], HttpClientXsrfModule);
return HttpClientXsrfModule;
}());
```
We were not able to tell that the `ngModule: HttpClientXsrfModule_1` property
assignment was actually meant to refer to the `function HttpClientXrsfModule()`
declaration. This caused the `ModuleWithProviders` processing to fail.
This commit ensures that we can compile typings files using the ESM5
format, so we can now update the examples boilerplate tool so that it
does not need to compile the ESM2015 format at all.
PR Close#29092
In ESM5 code, static methods appear as property assignments onto the constructor
function. For example:
```
var MyClass = (function() {
function MyClass () {}
MyClass.staticMethod = function() {};
return MyClass;
})();
```
This commit teaches ngcc how to process these forms when searching
for `ModuleWithProviders` functions that need to be updated in the typings
files.
PR Close#29092
By default ngcc will compile all the format properties specified. With this
change you can configure ngcc so that it will stop compiling an entry-point
after the first property that matches the `propertiesToConsider`.
PR Close#29092
By ensuring that EntryPointBundle contains everything that `Transformer.transform()`
needs to do its work, we can simplify its signature.
PR Close#29092
Now that we are using package.json properties to indicate which
entry-point format to compile, it turns out that we don't really
need to distinguish between flat and non-flat formats, unless we
are compiling `@angular/core`.
PR Close#29092
You can now specify a list of properties in the package.json that
should be considered (in order) to find the path to the format to compile.
The build marker system has been updated to store the markers in
the package.json rather than an additional external file.
Also instead of tracking the underlying bundle format that was compiled,
it now tracks the package.json property.
BREAKING CHANGE:
The `proertiesToConsider` option replaces the previous `formats` option,
which specified the final bundle format, rather than the property in the
package.json.
If you were using this option to compile only specific bundle formats,
you must now modify your usage to pass in the properties in the package.json
that map to the format that you wish to compile.
In the CLI, the `--formats` is no longer available. Instead use the
`--properties` option.
FW-1120
PR Close#29092
You can now, programmatically, specify an entry-point where
the ngcc compilation will occur.
Only this entry-point and its dependencies will be compiled.
FW-1119
PR Close#29092
The `mainNgcc()` function has been refactored to make it easier to call
ngcc from JavaScript, rather than via the command line.
For example, the `yargs` argument parsing and the exception
handling/logging have moved to the `main-ngcc.ts`
file so that it is only used for the command line version.
FW-1118
PR Close#29092
Previously we only compiled the typings files, in ngcc, if there was
an ES2015 formatted bundle avaiable. This turns out to be an artificial
constraint and we can also support typings compilation via ES5 formats
too.
This commit changes the ngcc compiler to attempt typings compilation
via ES5 if necessary. The order of the formats to consider is now:
FESM2015, FESM5, ESM2015, ESM5.
FW-1122
PR Close#29092
This PR alligns markup language lexer with the previous behaviour in version 7.x:
https://stackblitz.com/edit/angular-iancj2
While this behaviour is not perfect (we should be giving users an error message
here about invalid HTML instead of assuming text node) this is probably best we
can do without more substential re-write of lexing / parsing infrastructure.
This PR just fixes#29231 and restores VE behaviour - a more elaborate fix will
be done in a separate PR as it requries non-trivial rewrites.
PR Close#29328
Previously, the transitive scope calculation could lead into re-compiling
the same module multiple times. This fix ensures we cannot get into this loop.
It should be fixed more completely (e.g. more cases) once FW-1178 is resolved.
PR Close#29402
This patch is the first of a few patches which separates the
styling logic between template bindings (e.g. <div [style])
from host bindings (e.g. @HostBinding('style')). This patch
in particular introduces a series of host-specific styling
instructions and changes the existing set of template styling
instructions not to accept directives. The underyling code (which
communicates with the styling algorithm) still works as it did
before.
This PR also separates the styling instruction code into a separate
file and moves over all other instructions into an dedicated
instructions directory.
PR Close#29292
This PR alligns markup language lexer with the previous behaviour in version 7.x:
https://stackblitz.com/edit/angular-iancj2
While this behaviour is not perfect (we should be giving users an error message
here about invalid HTML instead of assuming text node) this is probably best we
can do without more substential re-write of lexing / parsing infrastructure.
This PR just fixes#29231 and restores VE behaviour - a more elaborate fix will
be done in a separate PR as it requries non-trivial rewrites.
PR Close#29328
Prior to this change, we always recompile all Components/Directives/Pipes even if they were AOT-compiled and had no overrides. This is causing problems in case we try to recompile a Component with "templateUrl" or "styleUrls" (which were already resolved in case of AOT) and generally this unnecessary work that TestBed was doing is not required. This commit adds extra logic to check whether a Component/Directive/Pipe already have compiled NG def (like ngComponentDef) and whether there are no overrides present - in this case recompilation is skipped. Recompilation is also skipped in case a Component/Directive has only Provider overrides - in this situation providers resolver function is patched to reflect overrides. Provider overrides are very common in g3, thus this code path ensures no full recompilation.
PR Close#29294
This fix is for a bug in the ngtsc PartialEvaluator, which statically
evaluates expressions.
Sometimes, evaluating a reference requires resolving a function which is
declared in another module, and thus no function body is available. To
support this case, the PartialEvaluator has the concept of a foreign
function resolver.
This allows the interpretation of expressions like:
const router = RouterModule.forRoot([]);
even though the definition of the 'forRoot' function has no body. In
ngtsc today, this will be resolved to a Reference to RouterModule itself,
via the ModuleWithProviders foreign function resolver.
However, the PartialEvaluator also associates any Identifiers in the path
of this resolution with the Reference. This is done so that if the user
writes
const x = imported.y;
'x' can be generated as a local identifier instead of adding an import for
'y'.
This was at the heart of a bug. In the above case with 'router', the
PartialEvaluator added the identifier 'router' to the Reference generated
(through FFR) to RouterModule.
This is not correct. References that result from FFR expressions may not
have the same value at runtime as they do at compile time (indeed, this is
not the case for ModuleWithProviders). The Reference generated via FFR is
"synthetic" in the sense that it's constructed based on a useful
interpretation of the code, not an accurate representation of the runtime
value. Therefore, it may not be legal to refer to the Reference via the
'router' identifier.
This commit adds the ability to mark such a Reference as 'synthetic', which
allows the PartialEvaluator to not add the 'router' identifier down the
line. Tests are included for both the PartialEvaluator itself as well as the
resultant buggy behavior in ngtsc overall.
PR Close#29387
The `resolve` phase (run after all handlers have analyzed) was
introduced in 7d954dffd, but `ngcc` was not updated to run the handlers'
`resolve()` methods. As a result, certain operations (such as listing
directives used in component templates) would not be performed by
`ngcc`.
This commit fixes it by running the `resolve()` methods once analysis
has been completed.
PR Close#28963
Fixes the incorrect failure message or the TSLint rule that
is used within Google. The TSLint rule is not part of the
public schematic code.
Additionally in order to make it easier to understand what
action the developer needs to take, we rather print out the
expected "static: true/false" statement instead of saying that
a query needs to be static or dynamic. Dynamic is ambiguous, as
there is no `dynamic: true` option.
PR Close#29320
Just updating comments in query-related things to make it easier for the next person that has to grok this for the first time.
Also adds a demo from @mhevery to one of the query specs
Related #29031
PR Close#29342
Just updating comments in query-related things to make it easier for the next person that has to grok this for the first time.
Also adds a demo from @mhevery to one of the query specs
Related #29031
PR Close#29342
Currently if an Angular library has multiple unnamed module re-exports, NGC will
generate incorrect metdata if the project is using the flat-module bundle option.
e.g.
_public-api.ts_
```ts
export * from '@mypkg/secondary1';
export * from '@mypkg/secondary2';
```
There are clearly two unnamed re-exports in the `public-api.ts` file. NGC right now
accidentally overwrites all previous re-exports with the last one. Resulting in the
generated metadata only containing a reference to `@mypkg/secondary2`.
This is problematic as it is common for primary library entry-points to have
multiple re-exports (e.g. Material re-exporting all public symbols; or flex-layout
exporting all public symbols from their secondary entry-points).
Currently Angular Material works around this issue by manually creating
a metadata file that declares the re-exports from all unnamed re-exports.
(see: https://github.com/angular/material2/blob/master/tools/package-tools/build-release.ts#L78-L85)
This workaround works fine currently, but is no longer easily integrated when
building the package output with Bazel. In order to be able to build such
libraries with Bazel (Material/flex-layout), we need to make sure that NGC
generates the proper flat-module metadata bundle.
PR Close#29360
Fixes host listeners being inherited twice, if the sub class has its own `propMetadata`. This is related to #29170 which fixed something similar, however all of the test cases there had a super class with some metadata and a sub class that didn't have any. The issue manifested itself in the `MatTreeToggle` which inherits a listener from the `CdkTreeToggle` and adds an extra `Input` of its own, causing the listener to be added twice.
PR Close#29353
- Remove an extra type `ViewOrElement`, which even had the same numeric value as `View`.
- Updates comment to remove part about alleged bit-masking that we could be doing here.
We aren't using this with bitmasks, and if we were, everything would be a `NodeType.Container`,
because it's value was `0`.
- Updates the number values to be simple, human-readable integers, since we're not using these
with any kind of bit-manipulation.
- Add comments about each type.
PR Close#29343
HACK: This is NOT the correct implementation for deprecatedOverrideProvider.
We do not plan to implement this at all since the API is deprecated and
scheduled for removal in V8. This hack is here temporarily for Ivy testing
until we transition apps inside Google to the overrideProvider API. At that
point, we will be able to remove this method entirely. In the meantime, we
can use overrideProvider here to test apps with Ivy that don't care about
eager instantiation. This fixes 97% of cases in our blueprint.
PR Close#29324
https://github.com/angular/angular-cli/pull/13780 changes the project
layout for the e2e application. It is no longer a separate project
and the e2e directory is now located alongside the existing project.
This commit updates Bazel scheamtics to support both old and new project
layout.
PR Close#29318
Angular Ivy interprets inline static style/class attribute values as instructions that
are processed whilst an element gets created. Because these inline style values are
referenced by style/class bindings, their inline style values are applied at a later
stage. Despite them being eventually applied, their values should be applied earlier
before any directives are instantiated so that directive code can rely on any inline
style/class changes.
This patch ensures that all static style/class attribute values are applied (rendered)
on the element before directives are instantiated.
Jira Issue: FW-1133
PR Close#29269
Following my previous change for placeholders removal, some special code that was used to find the last created node was no longer needed and had wrong interactions with the *ngFor directive.
Removing it fixed the issue.
PR Close#29308
Improves the failure message for the `explicit-query` timing TSLint rule
that is used within Google. Currently it's not very clear what action
developers need to take in order to resolve the lint failure manually.
PR Close#29258
In order to be able to use the static-query migration logic within
Google, we need to provide a TSLint rule entry-point that wires up
the schematic logic and provides reporting and automatic fixes.
PR Close#29258
When injecting with `@Attribute`, namespaced attributes should not match (in order to have feature parity with View Engine).
This PR resolves FW-1137
PR Close#29257
BREAKING CHANGE:
Certain elements (like `<tr>` or `<col>`) require parent elements to be of a certain type by the HTML specification
(ex. <tr> can only be inside <tbody> / <thead>). Before this change Angular template parser was auto-correcting
"invalid" HTML using the following rules:
- `<tr>` would be wrapped in `<tbody>` if not inside `<tbody>`, `<tfoot>` or `<thead>`;
- `<col>` would be wrapped in `<colgroup>` if not inside `<colgroup>`.
This meachanism of automatic wrapping / auto-correcting was problematic for several reasons:
- it is non-obvious and arbitrary (ex. there are more HTML elements that has rules for parent type);
- it is incorrect for cases where `<tr>` / `<col>` are at the root of a component's content, ex.:
```html
<projecting-tr-inside-tbody>
<tr>...</tr>
</projecting-tr-inside-tbody>
```
In the above example the `<projecting-tr-inside-tbody>` component culd be "surprised" to see additional
`<tbody>` elements inserted by Angular HTML parser.
PR Close#29219
Previously, ngtsc would resolve forward references while evaluating the
bootstrap, declaration, imports, and exports fields of NgModule types.
However, when generating the resulting ngModuleDef, the forward nature of
these references was not taken into consideration, and so the generated JS
code would incorrectly reference types not yet declared.
This commit fixes this issue by introducing function closures in the
NgModuleDef type, similarly to how NgComponentDef uses them for forward
declarations of its directives and pipes arrays. ngtsc will then generate
closures when required, and the runtime will unwrap them if present.
PR Close#29198
This fixes an issue with commit b6f6b117. In this commit, default imports
processed in a type-to-value conversion were recorded as non-local imports
with a '*' name, and the ImportManager generated a new default import for
them. When transpiled to ES2015 modules, this resulted in the following
correct code:
import i3 from './module';
// somewhere in the file, a value reference of i3:
{type: i3}
However, when the AST with this synthetic import and reference was
transpiled to non-ES2015 modules (for example, to commonjs) an issue
appeared:
var module_1 = require('./module');
{type: i3}
TypeScript renames the imported identifier from i3 to module_1, but doesn't
substitute later references to i3. This is because the import and reference
are both synthetic, and never went through the TypeScript AST step of
"binding" which associates the reference to its import. This association is
important during emit when the identifiers might change.
Synthetic (transformer-added) imports will never be bound properly. The only
possible solution is to reuse the user's original import and the identifier
from it, which will be properly downleveled. The issue with this approach
(which prompted the fix in b6f6b117) is that if the import is only used in a
type position, TypeScript will mark it for deletion in the generated JS,
even though additional non-type usages are added in the transformer. This
again would leave a dangling import.
To work around this, it's necessary for the compiler to keep track of
identifiers that it emits which came from default imports, and tell TS not
to remove those imports during transpilation. A `DefaultImportTracker` class
is implemented to perform this tracking. It implements a
`DefaultImportRecorder` interface, which is used to record two significant
pieces of information:
* when a WrappedNodeExpr is generated which refers to a default imported
value, the ts.Identifier is associated to the ts.ImportDeclaration via
the recorder.
* when that WrappedNodeExpr is later emitted as part of the statement /
expression translators, the fact that the ts.Identifier was used is
also recorded.
Combined, this tracking gives the `DefaultImportTracker` enough information
to implement another TS transformer, which can recognize default imports
which were used in the output of the Ivy transform and can prevent them
from being elided. This is done by creating a new ts.ImportDeclaration for
the imports with the same ts.ImportClause. A test verifies that this works.
PR Close#29266
Prior to this change default selector for Components was not applied in case selector is missing or defined as an empty string. This update aligns this behavior between Ivy and VE: now default selector is used for Components when it's needed. Directives with empty selector are not allowed and trigger a compile-time error in both Ivy and VE.
PR Close#29239
With 6215799, we introduced a schematic for the new static-query timing.
Currently when someone runs the update schematic manually within his
CLI project (the schematic does not run automatically yet), he might have
noticed that the migration is executed for the same `tsconfig` file multiple
times. This can happen because the `getProjectTsConfigPaths` function
can incorrectly return the same tsconfig multiple times. The paths are not
properly deduped as we don't normalize the determined project tsconfig paths
PR Close#29133
Currently the static-query migration does not properly handle functions which
are declared externally. This is because we don't resolve the symbol of the
call-expression through its type. Currently we just determine the symbol of the
call-expression through the given call expression node, which doesn't necessarily
refer to the *value declaration* of the call expression. e.g. the symbol refers to the
import declaration which imports the external function. This means that we currently
can't check the external function as we couldn't find the actual value declaration.
We can fix this by resolving the type of the call expression and using the type in order
to retrieve the symbol containing the *value declaration*
PR Close#29133
Currently when the static-query runs for a project with multiple TypeScript
configuration files (e.g. a usual CLI project), the migration incorrectly
applies the code transformation multiple times. This is because the migration
is currently based on the source file contents in the file system, while the
actual source file contents could have already changed in the devkit schematic
tree.
PR Close#29133
With 6215799055, we introduced a schematic
for the Angular core package that automatically migrates unexplicit
query definitions to the explicit query timing (static <-> dynamic).
As the initial foundation was already big enough, it was planned
to come up with a follow-up that handles asynchronous query
usages properly. e.g. queries could be used in Promises,
`setTimeout`, `setInterval`, `requestAnimationFrame` and more, but
the schematic would incorrectly declare these queries as static.
This commit ensures that we properly handle these micro/macro
tasks and don't incorrectly consider queries as static.
The declaration usage visitor should only check the synchronous
control flow and completely ignore any statements within function
like expressions which aren't explicitly executed in a synchronous
way. e.g. IIFE's still work as the function expression is
synchronously invoked.
PR Close#29133
Currently with ViewEngine, if someone runs the platform's
`bootstrapModule` method in order to boostrap a module in
JIT mode, external component resources are properly resolved
*automatically*.
Currently with Ivy, the developer would need to manually call
`resolveComponentResources` in order to asynchronously fetch
the determined external component resources. In order to make
this backwards compatible with ViewEngine, and also since
platforms can already specify a `ResourceLoader` compiler
provider, we need to automatically resolve all external
component resources on module bootstrap.
--
Since the `ResourceLoader` is part of the `@angular/compiler`,
because ViewEngine performed the factory creation in the compiler,
we can't access the `ResourceLoader` token from within core.
In order to workaround this without introducing a breaking change,
we just proxy the `ResourceLoader` token to `core` through the
compiler facade. In the future, we should be able to move the
`ResourceLoader` to core when ViewEngine code no longer exists in
the `@angular/compiler`.
PR Close#29083
Dynamic nodes are created at the end of the view stack, but we were removing all the placeholders between `i18nStart` and the last created node index, instead of removing everything between `i18nStart` and `i18nEnd`. This caused errors when dynamic nodes where created in multiple i18n blocks because we would remove all of the dynamic nodes created in the previous i18n blocks.
PR Close#29252
`api-extractor` binary is required for external consumers of `ng_module` that want to use the `bundle_dts` flag.
This also sets a different api-exttractor binary to use for ng_module, based if it's internal or external.
PR Close#29202
Prior to this change the code didn't take into account the fact that decorators can be aliases while importing into a script. As a result, these decorators were not recognized by Angular and various failures happened because of that. Now we take aliases into account and resolve decorator name properly.
PR Close#29195
`getCurrentDirectory` directory doesn't return a posix separated normalized path. While `rootDir` and `rootDirs` should return posix separated paths, it's best to not assume as other paths within the compiler options can be returned not posix separated such as `basePath`
See: https://github.com/Microsoft/TypeScript/blob/master/src/compiler/sys.ts#L635
This partially fixes#29140, however there needs to be a change in the CLI as well to handle this, as at the moment we are leaking devkit paths which is not correct.
Fixes#29140
PR Close#29151
Sometimes declarations are not exported publicly but are exported under
a private name. In this case, rather than adding a completely new
export to the entry point, we should create an export that aliases the
private name back to the original public name.
This is important when the typings files have been rolled-up using a tool
such as the [API Extractor](https://api-extractor.com/). In this case
the internal type of an aliased private export will be removed completely
from the typings file, so there is no "original" type to re-export.
For example:
If there are the following TS files:
**entry-point.ts**
```ts
export {Internal as External} from './internal';
```
**internal.ts**
```ts
export class Internal {
foo(): void;
}
```
Then the API Extractor might roll up the .d.ts files into:
```ts
export declare class External {
foo(): void;
}
```
In this case ngcc should add an export so the file looks like:
```ts
export declare class External {
foo(): void;
}
export {External as Internal};
```
PR Close#28735
ngsummary files were generated with an export for each class declaration.
However, some Angular code declares classes (class Foo) and exports them
(export {Foo}) separately, which was causing incomplete summary files.
This commit expands the set of symbol names for which summary exports will
be generated, fixing this issue.
PR Close#29193
Previously, when the NgModule scope resolver discovered semantic errors
within a users NgModules, it would throw assertion errors. TODOs in the
codebase indicated these should become ts.Diagnostics eventually.
Besides producing better-looking errors, there is another reason to make
this change asap: these assertions were shadowing actual errors, via an
interesting mechanism:
1) a component would produce a ts.Diagnostic during its analyze() step
2) as a result, it wouldn't register component metadata with the scope
resolver
3) the NgModule for the component references it in exports, which was
detected as an invalid export (no metadata registering it as a
component).
4) the resulting assertion error would crash the compiler, hiding the
real cause of the problem (an invalid component).
This commit should mitigate this problem by converting scoping errors to
proper ts.Diagnostics. Additionally, we should consider registering some
marker indicating a class is a directive/component/pipe without actually
requiring full metadata to be produced for it, which would allow suppression
of errors like "invalid export" for such invalid types.
PR Close#29191
At the moment, certain tests relies on resolving the module with an index.d.ts, this root cause might be some implementations are missing from the mocks.
Similar to: 58b4045359
PR Close#28884
`ng_module` will now include an `src/r3_symbol.d.ts` when compiling the core package under `ngc` togather with `dts bundling`, This is due that `ngcc` relies on this file to be present, but the `r3_symbols` file which is not part of our public api.
With this change, we can now ship an addition dts file which is flattened.
PR Close#28884
This commit refactors and expands ngtsc's support for generating imports of
values from imports of types (this is used for example when importing a
class referenced in a type annotation in a constructor).
Previously, this logic handled "import {Foo} from" and "import * as foo
from" style imports, but failed on imports of default values ("import
Foo from"). This commit moves the type-to-value logic to a separate file and
expands it to cover the default import case. Doing this also required
augmenting the ImportManager to track default as well as non-default import
generation. The APIs were made a little cleaner at the same time.
PR Close#29146
In the TypeScript compiler API, emit() can be performed either on a single
ts.SourceFile or on the entire ts.Program simultaneously.
ngtsc previously used whole-program emit, which was convenient to use while
spinning up the project but has a significant drawback: it causes a type
checking operation to occur for the whole program, including .d.ts files.
In large Bazel environments (such as Google's codebase), an ngtsc invocation
can have a few .ts files and thousands of .d.ts inputs. This unwanted type
checking is therefore a significant drain on performance.
This commit switches ngtsc to emit each .ts file individually, avoiding the
unwanted type checking.
PR Close#29147
When processing a JavaScript program, TS may come across a symbol that has
been imported from a TypeScript typings file.
In this case the compiler may pass the ReflectionHost a `prototype` symbol
as an export of the class.
This pseudo-member symbol has no declarations, which previously caused the
code in `Esm5ReflectionHost.reflectMembers()` to crash.
Now we just quietly ignore such a symbol and leave `Esm2015ReflectionHost`
to deal with it.
(As it happens `Esm2015ReflectionHost` also quietly ignores this symbol).
PR Close#29158
This method is a more convenient and efficient way of removing all
components from a FormArray. Before it, we needed to loop the FormArray
removing each component until empty.
Resolves#18531
PR Close#28918
Prior to this commit, i18n instructions (i18n, i18nStart) were generated before listener instructions. As a result, event listeners were attached to the wrong element (text node, not the parent element). This change updates the order of instructions and puts i18n ones after listeners, to make sure listeners are attached to the right elements.
PR Close#29173
For the template type checking to work correctly, it needs to know
what attributes are bound to expressions or directives, which may
require expressions in the template to be evaluated in a different
scope.
In inline templates, there are attributes that are now marked as
"Template" attributes. We need to ensure that the template
type checking code looks at these "bound" attributes as well as the
"input" attributes.
PR Close#29041
The content projection mechanism is static, in that it only looks at the static
template nodes before directives are matched and change detection is run.
When you have a selector-based content projection the selection is based
on nodes that are available in the template.
For example:
```
<ng-content selector="[some-attr]"></ng-content>
```
would match
```
<div some-attr="..."></div>
```
If you have an inline-template in your projected nodes. For example:
```
<div *ngIf="..." some-attr="..."></div>
```
This gets pre-parsed and converted to a canonical form.
For example:
```
<ng-template [ngIf]="...">
<div some-attr=".."></div>
</ng-template>
```
Note that only structural attributes (e.g. `*ngIf`) stay with the `<ng-template>`
node. The other attributes move to the contained element inside the template.
When this happens in ivy, the ng-template content is removed
from the component template function and is compiled into its own
template function. But this means that the information about the
attributes that were on the content are lost and the projection
selection mechanism is unable to match the original
`<div *ngIf="..." some-attr>`.
This commit adds support for this in ivy. Attributes are separated into three
groups (Bindings, Templates and "other"). For inline-templates the Bindings
and "other" types are hoisted back from the contained node to the `template()`
instruction, so that they can be used in content projection matching.
PR Close#29041
This commit adds a new `AttributeMarker` type that will be used, in a
future commit, to mark attributes as coming from an inline-template
expansion, rather than the element that is being contained in the template.
PR Close#29041
This PR also changes the name of `EmptyOutletComponent` to `ɵEmptyOutletComponent`. This is because `ngcc` requires the node to retain the original name while dts bundler will rename the node is it's only exported using the aliases.
Example typings files:
```ts
declare class EmptyOutletComponent {
}
export {EmptyOutletComponent as ɵEmptyOutletComponent}
```
will be emitted as
```ts
export declare class ɵEmptyOutletComponent {
}
```
PR Close#28833
This commit modifies the Bazel builder to copy the Bazel WORKSPACE and
BUILD.bazel files to the project root directory before invoking Bazel.
This hides the Bazel files from users.
PR Close#29110
`ng build` should produce a bundle that could be readily deployed to
a web server, similar to the behavior of current `ng build` with
webpack.
Note that in Bazel, there is no `ng build` for dev bundles. Instead,
users are expected to run `ts_devserver`.
Closes https://github.com/angular/angular/issues/28877
PR Close#29136
- remove individuals from @angular/* package.json, we don't keep them up-to-date
- switch keys in contributors.json to GitHub handles, seems like a better identifier and lets us grab avatar images from GitHub account
- move emeritus ppl to a new Alumni group (won't yet appear on the site)
- add "lead/mentor" keys so we know who is coordinating work
- add a script that generates an "org chart" graphic
PR Close#28930
Prior to this change, the RegExp that was used to check for dashes in field names used "g" (global) flag that retains lastIndex, which might result in skipping some fields that should be wrapped in quotes (since lastIndex advanced beyond the next "-" location). This commit removes this flag and updates the test to make sure there are no regressions.
PR Close#29126
This update gives external tooling the ability for async providers to
finish resolving before the document is serialized. This is not a
breaking change since render already returns a promise. All returned
promises from `BEFORE_APP_SERIALIZED` providers will wait to be
resolved or rejected. Any rejected promises will only console.warn().
PR Close#29120
Some tests in exports spec rely on the exact output of innerHTML. In IE11 the order of attributes might change, thus causing tests to fail (in case an element contains more than one attribute). This commit avoids innerHTML usage and performs the necessary checks via element properties.
PR Close#29127
Some of the export tests had assertions that relied on capitalization
of attributes in the DOM. IE treats capitalization somewhat differently,
so our SauceLabs tests were failing.
This commit tweaks the tests so that the assertions do not rely on
attributes to be capitalized or not.
PR Close#29125
ngtsc occasionally converts a type reference (such as the type of a
parameter in a constructor) to a value reference (argument to a
directiveInject call). TypeScript has a bad habit of sometimes removing
the import statement associated with this type reference, because it's a
type only import when it initially looks at the file.
A solution to this is to always add an import to refer to a type position
value that's imported, and not rely on the existing import.
PR Close#29111
With 6215799055 we introduced schematics
for `core`, but due to the fact the Saucelabs legacy job does not run
for PRs, we didn't realize that the legacy Saucelabs job ends up
running the schematic specs.
We don't want to run these schematic tests in the legacy-saucelabs job,
as these are node-only specs and the non-Bazel Karma setup is not set
up to provide the devkit schematic node modules.
We exclude the schematics folder in the `core` package in the
legacy-build tsconfig file (similar to how it is done for elements)
PR Close#29124
Introduces an update schematic for the "@angular/core" package
that automatically migrates pre-V8 "ViewChild" and "ContentChild"
queries to the new explicit timing syntax. This is not required
yet, but with Ivy, queries will be "dynamic" by default. Therefore
specifying an explicit query timing ensures that developers can
smoothly migrate to Ivy (once it's the default).
Read more about the explicit timing API here:
https://github.com/angular/angular/pull/28810
PR Close#28983
Implement `readFile` in `MockTypescriptHost` so TypeScript can resolve module based on it's resolution, since certain files are not on disk but in memory
PR Close#28854
This PR also changes the name of NgNoValidate` to `ɵNgNoValidate`. This is because `ngcc` requires the node to retain the original name while dts bundler will rename the node is it's only exported using the aliases.
Example typings files:
```ts
declare class NgNoValidate{
}
export {NgNoValidateas ɵNgNoValidate}
```
will be emitted as
```ts
export declare class ɵNgNoValidate {
}
```
PR Close#28854
* Use exclusively `TeamComponent` class for examples, as currently there are at least 3 different component classes being used, one of which is actually as a type argument for a `Resolve<T>` implementation.
PR Close#29093
The version used to test and build from the root package.json is pinned to 2.1.2. This change ensures that users will at a minimum be using the same version.
PR Close#28893
Previously, if an app version contained the same files as an older
version (e.g. making a change, then rolling it back), the SW would not
detect it as the latest version (and update clients).
This commit fixes it by adding a `timestamp` field in `ngsw.json`, which
makes each build unique (with sufficiently high probability).
Fixes#24338
PR Close#26006
When ngtsc generates a .ngfactory shim, it does so based on the contents of
an original file in the program. Occasionally these original files have
comments at the top which are load-bearing (e.g. they contain jsdoc
annotations which are significant to downstream bundling tools). The
generated factory shims should preserve this comment.
This commit adds a step to the ngfactory generator to preserve the top-level
comment from the original source file.
FW-1006 #resolve
FW-1095 #resolve
PR Close#29065
Prior to this change, keys in "inputs" and "outputs" objects generated by compiler were not checked against unsafe characters. As a result, in some cases the generated code was throwing JS error. Now we check whether a given key contains any unsafe chars and wrap it in quotes if needed.
PR Close#28919
Angular supports having a component extend off of a parent component.
When this happens, all annotation-level data is inherited including styles
and classes. Up until now, Ivy only paid attention to static styling
values on the parent component and not the child component. This patch
ensures that both the parent's component and child component's styling
data is merged and rendered accordingly.
Jira Issue: FW-1081
PR Close#29015
Currently we only reset the `Attached` flag of a view if it is detached through its parent, however this means that if a root view is destroyed, its flag will never be reset. This manifested itself in one of the Material tests where we were destroying the root view.
This PR resolves FW-1130.
PR Close#29064
The ngtsc partial evaluator previously would not handle an enum reference
inside a template string expression correctly. Enums are resolved to an
`EnumValue` type, which has a `resolved` property with the actual value.
When effectively toString-ing a `ResolvedValue` as part of visiting a
template expression, the partial evaluator needs to translate `EnumValue`s
to their fully resolved value, which this commit does.
PR Close#29062
Currently, ngtsc has a bug where if you alias the name of a decorator when
importing it, it won't be detected properly. This is because the compiler
uses the aliased name and not the original, declared name of the decorator
for detection.
This commit fixes the compiler to compare against the declared name of
decorators when available, and adds a test to prevent regression.
PR Close#29061
ngtsc has cyclic import detection, to determine when adding an import to a
directive or pipe would create a cycle. However, this detection must also
account for already inserted imports, as it's possible for both directions
of a circular import to be inserted by Ivy (as opposed to at least one of
those edges existing in the user's program).
This commit fixes the circular import detection for components to take into
consideration already added edges. This is difficult for one critical
reason: only edges to files which will *actually* be imported should be
considered. However, that depends on which directives & pipes are used in
a given template, which is currently only known by running the
TemplateDefinitionBuilder during the 'compile' phase. This is too late; the
decision whether to use remote scoping (which consults the import graph) is
made during the 'resolve' phase, before any compilation has taken place.
Thus, the only way to correctly consider synthetic edges is for the compiler
to know exactly which directives & pipes are used in a template during
'resolve'. There are two ways to achieve this:
1) refactor `TemplateDefinitionBuilder` to do its work in two phases, with
directive matching occurring as a separate step which can be performed
earlier.
2) use the `R3TargetBinder` in the 'resolve' phase to independently bind the
template and get information about used directives.
Option 1 is ideal, but option 2 is currently used for practical reasons. The
cost of binding the template can be shared with template-typechecking.
PR Close#29040
In the @Component decorator, the 'host' field is an object which represents
host bindings. The type of this field is complex, but is generally of the
form {[key: string]: string}. Several different kinds of bindings can be
specified, depending on the structure of the key.
For example:
```
@Component({
host: {'[prop]': 'someExpr'}
})
```
will bind an expression 'someExpr' to the property 'prop'. This is known to
be a property binding because of the square brackets in the binding key.
If the binding key is a plain string (no brackets or parentheses), then it
is known as an attribute binding. In this case, the right-hand side is not
interpreted as an expression, but is instead a constant string.
There is no actual requirement that at build time, these constant strings
are known to the compiler, but this was previously enforced as a side effect
of requiring the binding expressions for property and event bindings to be
statically known (as they need to be parsed). This commit breaks that
relationship and allows the attribute bindings to be dynamic. In the case
that they are dynamic, the references to the dynamic values are reflected
into the Ivy instructions for attribute bindings.
PR Close#29033
DynamicValues are generated whenever a partially evaluated expression is
unable to be resolved statically. They contain a reference to the ts.Node
which wasn't resolvable.
They can also be nested. For example, the expression 'a + b' is resolvable
only if 'a' and 'b' are themselves resolvable. If either 'a' or 'b' resolve
to a DynamicValue, the whole expression must also resolve to a DynamicValue.
Previously, if 'a' resolved to a DynamicValue, the entire expression might
have been resolved to the same DynamicValue. This correctly indicated that
the expression wasn't resolvable, but didn't return a reference to the
shallow node that couldn't be resolved (the expression 'a + b'), only a
reference to the deep node that couldn't be resolved ('a').
In certain situations, it's very useful to know the shallow unresolvable
node (for example, to use it verbatim in the output). To support this,
the partial evaluator is updated to always wrap DynamicValue to point to
each unresolvable expression as it's processed, ensuring the receiver can
determine exactly which expression node failed to resolve.
PR Close#29033
Currently if a user accidentally calls ViewContainerRef.insert() with
a view that has already been attached, we do not clean up the references
properly, so we create a view tree with a cycle. This causes an infinite
loop when the view is destroyed.
This PR ensures that we fall back to ViewContainerRef.move() behavior
if we try to insert a view that is already attached. This fixes the
cycle and honors the user intention.
PR Close#29047
This change helps highlight certain misoptimizations with Closure
compiler. It is also stylistically preferable to consistently use index
access on index sig types.
Roughly, when one sees '.foo' they know it is always checked for typos
in the prop name by the type system (unless 'any'), while "['foo']" is
always not.
Once all angular repos are conforming this will become a tsetse.info
check, enforced by bazel.
PR Close#28937
Previously the start of a character indicated by an escape sequence
was being incorrectly computed by the lexer, which caused tokens
to include the start of the escaped character sequence in the
preceding token. In particular this affected the name extracted
from opening tags if the name was terminated by an escape sequence.
For example, `<t\n>` would have the name `t\` rather than `t`.
This fix refactors the lexer to use a "cursor" object to iterate over
the characters in the template source. There are two cursor implementations,
one expects a simple string, the other expects a string that contains
JavaScript escape sequences that need to be unescaped.
PR Close#28978
The parts of a token are supposed to be an array of not-null strings,
but we were using `null` for tags that had no prefix. This has been
fixed to use the empty string in such cases, which allows the `null !`
hack to be removed.
PR Close#28978
Prior to this change, TypeScript stripped out some imports in case we reference a type that can be represented as a value (for ex. classes). This fix ensures that we use correct symbol identifier, which makes TypeScript retain the necessary import statements.
PR Close#28941
This commit removes code duplication around projectables nodes insertion.
It also simplfy the overall logic by using recursive function calls instead
of hand-unrolled stack (we can always optimise this part if needed).
PR Close#29008
When web-animations and/or CSS keyframes are used for animations certain
CSS style values (such as `display` and `position`) may be ignored by a
keyframe-based animation. Angular should special-case these styles to
ensure that they get applied as inline styles throughout the duration of
the animation.
Closes#24923Closes#25635
Jira Issue: FW-1091
Jira Issue: FW-1092
PR Close#28911
Angular supports using <style> and <link> tags inline in component
templates, but previously such tags were not implemented within the ngtsc
compiler. This commit introduces that support.
FW-1069 #resolve
PR Close#28997
Prior to this change i18n block bindings were converted to Expressions right away (once we first access them), when in non-i18n cases we processed them differently: the actual conversion happens at instructions generation. Because of this discrepancy, the output for bindings in i18n blocks was generated incorrectly (with invalid indicies in pipeBindN fns and invalid references to non-existent local variables). Now the bindings processing is unified and i18nExp instructions should contain right bind expressions.
PR Close#28969
This commit introduces support for the windows paths in the new concrete types mechanism that was introduced in this PR https://github.com/angular/angular/pull/28523
Normalized posix paths that start with either a `/` or `C:/` are considered to be an absolute path.
Note: `C:/` is used as a reference, as other drive letters are also supported.
Fixes#28754
PR Close#28752
Prior to this change, the logic that outputs i18n consts (like `const MSG_XXX = goog.getMsg(...)`) didn't have a check whether a given const that represent a certain i18n message was already included into the generated output. This commit adds the logic to mark corresponding i18n contexts after translation was generated, to avoid duplicate consts in the output.
PR Close#28967
Karma is not configured to retrieve the imported scripts using those
absolute deep paths. Using relative paths instead.
See [here][1] for an example failing job.
[1]: https://circleci.com/gh/angular/angular/220751
PR Close#29009
The partial evaluator in ngtsc can handle a shorthand property declaration
in the middle evaluation, but fails if evaluation starts at the shorthand
property itself. This is because evaluation starts at the ts.Identifier
of the property (the ts.Expression representing it), not the ts.Declaration
for the property.
The fix for this is to detect in TypeScriptReflectionHost when a ts.Symbol
refers to a shorthand property, and to use the ts.TypeChecker method
getShorthandAssignmentValueSymbol() to resolve the value of the assignment
instead.
FW-1089 #resolve
PR Close#28936
This will make the debugging output go away
DEBUG: Rule 'io_bazel_rules_sass' modified arguments {"sha256": "6caffb8277b3033d6b5117b77437faaa6cd3c6679d6d6c81284511225aa54711"}
PR Close#28994
In the past, the sanitizer would remove unsafe elements, but still
traverse and sanitize (and potentially preserve) their content. This was
problematic in the case of `<style></style>` tags, whose content would
be converted to HTML text nodes.
In order to fix this, the sanitizer's behavior was changed in #25879 to
ignore the content of _all_ unsafe elements. While this fixed the
problem with `<style></style>` tags, it unnecessarily removed the
contents for _any_ unsafe element. This was an unneeded breaking change.
This commit partially restores the old sanitizer behavior (namely
traversing content of unsafe elements), but introduces a list of
elements whose content should not be traversed if the elements
themselves are considered unsafe. Currently, this list contains `style`,
`script` and `template`.
Related to #25879 and #26007.
Fixes#28427
PR Close#28804
Currently if an embedded view contains projected nodes, its `rootNodes` array will include `null` instead of the root nodes inside the projection slot. This manifested itself in one of the Material unit tests where we stamp out a template and then move its `rootNodes` into the overlay container.
This PR is related to FW-1087.
PR Close#28951
For efficiency reasons we often put several different data types (`RNode`, `LView`, `LContainer`,
`StylingContext`) in same location in `LView`. This is because we don't want to pre-allocate
space
for it because the storage is sparse. This file contains utilities for dealing with such data
types.
How do we know what is stored at a given location in `LView`.
- `Array.isArray(value) === false` => `RNode` (The normal storage value)
- `Array.isArray(value) === true` => than the `value[0]` represents the wrapped value.
- `typeof value[TYPE] === 'object'` => `LView`
- This happens when we have a component at a given location
- `typeof value[TYPE] === 'number'` => `StylingContext`
- This happens when we have style/class binding at a given location.
- `typeof value[TYPE] === true` => `LContainer`
- This happens when we have `LContainer` binding at a given location.
NOTE: it is assumed that `Array.isArray` and `typeof` operations are very efficient.
PR Close#28947
`LView`, `LContainer`, `StylingContext` are all arrays which wrap either
an `HTMLElement`, `LView`, `LContainer`, `StylingContext`. It is often
necessary to retrieve the correct type of element from the location
which means that we often have to wrap the arrays. Logically it makes
more sense if the thing which we are wrapping is at `0` location. Also
it may be more performant since data is more local which may result in
more L2 cache hits in CPU.
PR Close#28947
This change contains conditionally attached classes which provide human readable (debug) level
information for `LView`, `LContainer` and other internal data structures. These data structures
are stored internally as array which makes it very difficult during debugging to reason about the
current state of the system.
Patching the array with extra property does change the array's hidden class' but it does not
change the cost of access, therefore this patching should not have significant if any impact in
`ngDevMode` mode. (see: https://jsperf.com/array-vs-monkey-patch-array)
So instead of seeing:
```
Array(30) [Object, 659, null, …]
```
```
LViewDebug {
views: [...],
flags: {attached: true, ...}
nodes: [
{html: '<div id="123">', ..., nodes: [
{html: '<span>', ..., nodes: null}
]}
]
}
```
PR Close#28945
If an interface is not exported publicly from its package, then the doc-gen
does not see it, and so cannot include it in the generated documentation.
This was the case for a number of `...Decorator` interfaces, such as
`PipeDecorator` and `InputDecorator.
This commit adds these interfaces to the public export to fix this problem.
PR Close#28836
Google3 detected circular references here, so splitting up this rather hodge-podge list of functions into slightly better organizational units.
PR Close#28382
- TView no longer stores childIndex
- LView now as CHILD_HEAD and CHILD_TAIL
TView used to store the head of the list, therefor all LViews had to have the same head, which is incorrect.
PR Close#28382
- Removes CONTAINER_INDEX
- LView[PARENT] now contains LContainer when necessary
- Removes now unused arguments to methods after refactor
PR Close#28382
In certain configurations (such as the g3 repository) which have lots of
small compilation units as well as strict dependency checking on generated
code, ngtsc's default strategy of directly importing directives/pipes into
components will not work. To handle these cases, an additional mode is
introduced, and is enabled when using the FileToModuleHost provided by such
compilation environments.
In this mode, when ngtsc encounters an NgModule which re-exports another
from a different file, it will re-export all the directives it contains at
the ES2015 level. The exports will have a predictable name based on the
FileToModuleHost. For example, if the host says that a directive Foo is
from the 'root/external/foo' module, ngtsc will add:
```
export {Foo as ɵng$root$external$foo$$Foo} from 'root/external/foo';
```
Consumers of the re-exported directive will then import it via this path
instead of directly from root/external/foo, preserving strict dependency
semantics.
PR Close#28852
This commit splits apart selector_scope.ts in ngtsc and extracts the logic
into two separate classes, the LocalModuleScopeRegistry and the
DtsModuleScopeResolver. The logic is cleaned up significantly and new tests
are added to verify behavior.
LocalModuleScopeRegistry implements the NgModule semantics for compilation
scopes, and handles NgModules declared in the current compilation unit.
DtsModuleScopeResolver implements simpler logic for export scopes and
handles NgModules declared in .d.ts files.
This is done in preparation for the addition of re-export logic to solve
StrictDeps issues.
PR Close#28852
This PR fixes a bug in autocompletion for @Input/@Output decorator with
an alias. The current implementation ignores the alias.
Credit for this work is attributed to @edgardmessias
The original work fixed the bug, but was lacking test.
PR Close#27959
PR Close#28904
At the moment, the API extractor doesn't support local namespaced imports, this will break the generation of flat dts files. When we turn on dts bundling for this package it will break. Hence this is the ground work needed for making this package compatable with the API extractor.
See: https://github.com/Microsoft/web-build-tools/issues/1029
Relates to #28588
PR Close#28642
During build time we remap particular property bindings, because their names don't match their attribute equivalents (e.g. the property for the `for` attribute is called `htmlFor`). This breaks down if the particular element has an input that has the same name, because the property gets mapped to something invalid.
The following changes address the issue by mapping the name during runtime, because that's when directives are resolved and we know all of the inputs that are associated with a particular element.
PR Close#28765
Fixes the `ngOnDestroy` hook on a component or directive being called twice, if the type is also registered as a provider.
This PR resolves FW-1010.
PR Close#28470
Prior to this change presence of HTML comments inside <ng-content> caused compiler to throw an error that <ng-content> is not empty. Now HTML comments are not considered as a meaningful content, thus no error is thrown. This behavior is now aligned in Ivy/VE.
PR Close#28849
Prior to this change absolute file paths (like `/a/b/c/style.css`) were calculated taking current component file location into account. As a result, absolute file paths were calculated using current file as a root. This change updates this logic to ignore current file path in case of absolute paths.
PR Close#28789
Prior to this change, Ivy and VE CSS resource resolution was different: in addition to specified styleUrl (with .scss, .less and .styl extensions), VE also makes an attempt to resolve resource with .css extension. This change introduces similar logic for Ivy to make sure Ivy behavior is backwards compatible.
PR Close#28770
Prior to this change, the @fileoverview annotations added by users in source files or by tsickle during compilation might have change a location due to the fact that Ngtsc may prepend extra imports or constants. As a result, the output file is considered invalid by Closure (misplaced @fileoverview annotation). In order to resolve the problem we relocate @fileoverview annotation if we detect that its host node shifted.
PR Close#28723
This change is kind of similar to #27466, but instead of ensuring that
these shims can be generated, we also need to make sure that developers
are able to also use the factory shims like with `ngc`.
This issue is now surfacing because we have various old examples which
are now also built with `ngtsc` (due to the bazel migration). On case insensitive
platforms (e.g. windows) these examples cannot be built because ngtsc fails
the app imports a generated shim file (such as the factory shim files).
This is because the `GeneratedShimsHostWrapper` TypeScript host uses
the `getCanonicalFileName` method in order to check whether a given
file/module exists in the generator file maps. e.g.
```
// Generator Map:
'C:/users/paul/_bazel_paul/lm3s4mgv/execroot/angular/packages/core/index.ngfactory.ts' =>
'C:/users/paul/_bazel_paul/lm3s4mgv/execroot/angular/packages/core/index.ts',
// Path passed into `fileExists`
C:/users/paul/_bazel_paul/lm3s4mgv/execroot/angular/packages/core/index.ngfactory.ts
// After getCanonicalFileName (notice the **lower-case drive name**)
c:/users/paul/_bazel_paul/lm3s4mgv/execroot/angular/packages/core/index.ngfactory.ts
```
As seen above, the generator map does not use the canonical file names, as well as
TypeScript internally does not pass around canonical file names. We can fix this by removing
the manual call to `getCanonicalFileName` and just following TypeScript internal-semantics.
PR Close#28831
Fixes a minor typo in the `listLazyRoutes` method for `ngtsc`. Also in
addition fixes that a newly introduced test for `listLazyRoutes` broke the
tests in Windows. It's clear that we still don't run tests against
Windows, but we also made all other tests pass (without CI verification),
and it's not a big deal fixing this while being at it.
PR Close#28831
With #28402 we updated the `examples` package to be
built and tested with Bazel. This PR was only intended
for the e2e integration tests, and there still seem to be
a few unit tests that need to be migrated to Bazel until
we can remove the legacy local unit tests job.
PR Close#28703
Prior to this fix, both the `NgStyle` and `NgClass` directives made use
of `Renderer2` and this dependency raised issues for future versions of
Angular that cannot inject it. This patch ensures that there are two
versions of both directives: one for the VE and another for Ivy.
Jira Issue: FW-882
PR Close#28711
Prior to this fix, using the compiler's ivy_switch mechanism was
only available to core packages. This patch allows for this variable
switching mechanism to work across all other angular packages.
PR Close#28711
This commit adds a postinstall step to the package.json generated by the
schematics to generate ng summary files needed for AOT. Summary files
are not published in npm packages.
PR Close#28850
Since rxjs is no longer built from source in Bazel schematics, the
minimum version ought to be at least 6.4.0.
This commit adds function to bump the version in package.json.
PR Close#28841
This change enables dts bundling for the following packages and their secondary entry points:
- @angular/animations
- @angular/elements
- @angular/http
- @angular/platform-browser
- @angular/platform-browser-dynamic
- @angular/platform-server
- @angular/platform-webworker
- @angular/platform-webworker-dynamic
- @angular/servce-worker
Dts bundling happens in `ng_module` bazel definition, hence packages such as `@angular/compiler`, `@angular/compiler-cli` and `@angular/langauge service` cannot be flattened as they use `ts_library`.
`@angular/core`, `@angular/common`, `@angular/upgrade` and `@angular/forms` will be done seperatly as it requires some changes either to their source or specs.
PR Close#28726
We previously disabled this test because we did not yet have
static query support in Ivy and the planned API would be
slightly different. Now that a static query flag is available
that works in both View Engine and Ivy, the test has been
updated to use that flag and has been turned on to run in CI.
Since the test was always unrelated to queries and was intended
to test *ngIf behavior, updating the test in this instance
seems reasonable.
PR Close#28845
The `setUpLocationSync` function in @angular/router/upgrade didn't previously let you sync hash-based navigations. With this change, you can now pass an option to `setUpLocationSync` that will make sure location changes run in Angular in hash-based apps.
Fixes#24429#21995
PR Close#28609
I18n can change the order of the nodes, or insert new dynamic nodes. When that happens it can break the existing links (`TNode.next`) or even create loops:
```
div1 → div2 → div3 → div4 → div5
```
Can become:
```
div1 → div4 → div2 → div3 div5
🡑 │
└─────────────┘
```
This PR fixes this issue by recreating the broken links between those nodes.
PR Close#28827
This commit adds support for the `static: true` flag in `ContentChild`
queries. Prior to this commit, all `ContentChild` queries were resolved
after change detection ran. This is a problem for backwards
compatibility because View Engine also supported "static" queries which
would resolve before change detection.
Now if users add a `static: true` option, the query will be resolved in
creation mode (before change detection runs). For example:
```ts
@ContentChild(TemplateRef, {static: true}) template !: TemplateRef;
```
This feature will come in handy for components that need
to create components dynamically.
PR Close#28811
This commit adds support for the `static: true` flag in
`ViewChild` queries. Prior to this commit, all `ViewChild`
queries were resolved after change detection ran. This is
a problem for backwards compatibility because View Engine
also supported "static" queries which would resolve before
change detection.
Now if users add a `static: true` option, the query will be
resolved in creation mode (before change detection runs).
For example:
```ts
@ViewChild(TemplateRef, {static: true}) template !: TemplateRef;
```
This feature will come in handy for components that need
to create components dynamically.
PR Close#28811
Prior to this commit, the timing of `ViewChild`/`ContentChild` query
resolution depended on the results of each query. If any results
for a particular query were nested inside embedded views (e.g.
*ngIfs), that query would be resolved after change detection ran.
Otherwise, the query would be resolved as soon as nodes were created.
This inconsistency in resolution timing had the potential to cause
confusion because query results would sometimes be available in
ngOnInit, but sometimes wouldn't be available until ngAfterContentInit
or ngAfterViewInit. Code depending on a query result could suddenly
stop working as soon as an *ngIf or an *ngFor was added to the template.
With this commit, users can dictate when they want a particular
`ViewChild` or `ContentChild` query to be resolved with the `static`
flag. For example, one can mark a particular query as `static: false`
to ensure change detection always runs before its results are set:
```ts
@ContentChild('foo', {static: false}) foo !: ElementRef;
```
This means that even if there isn't a query result wrapped in an
*ngIf or an *ngFor now, adding one to the template later won't change
the timing of the query resolution and potentially break your component.
Similarly, if you know that your query needs to be resolved earlier
(e.g. you need results in an ngOnInit hook), you can mark it as
`static: true`.
```ts
@ViewChild(TemplateRef, {static: true}) foo !: TemplateRef;
```
Note: this means that your component will not support *ngIf results.
If you do not supply a `static` option when creating your `ViewChild` or
`ContentChild` query, the default query resolution timing will kick in.
Note: This new option only applies to `ViewChild` and `ContentChild`
queries, not `ViewChildren` or `ContentChildren` queries, as those types
already resolve after CD runs.
PR Close#28810
Currently if developers use call expressions in their static
class members ([like we do in Angular](https://github.com/angular/angular/blob/master/packages/core/src/change_detection/differs/keyvalue_differs.ts#L121)),
the metadata that is generated for flat modules is invalid. This
is because the metadata bundler logic currently does not handle
call expressions in static class members and the symbol references
are not rewritten to avoid relative paths in the bundle.
Static class members using a call expression are not relevant for
the ViewEngine AOT compilation, but it is problematic that the
bundled metadata references modules using their original relative
path. This means that the bundled metadata is no longer encapsulated
and depends on other emitted files to be emitted in the proper place.
These incorrect relative paths can now cause issues where NGC
looks for the referenced symbols in the incorrect path. e.g.
```
src/
| lib/
| index.ts -> References the call expression using `../../di`
```
Now the metadata looks like that:
```
node_modules/
| @angular/
-- | core/
-- -- | core.metadata.json -> Says that the call expr. is in `../../di`.
| di/
```
Now if NGC tries to use the metadata files and create the summary files,
NGC resolves the call expression to the `node_modules/di` module. Since
the "unexpected" module does not contain the desired symbol, NGC will
error out.
We should fix this by ensuring that we don't ship corrupted metadata
to NPM which contains relative references that can cause such
failures (other imports can be affected as well; it depends on what
modules the developer has installed and how we import our call
expressions).
Fixes#28741.
PR Close#28762
Currently setting `enableIvy` to true runs a hybrid mode of `ngc` and `ngtsc`. This is counterintuitive given the name of the flag itself.
This PR makes the `true` value equivalent to the previous `ngtsc`, and `ngtsc` becomes an alias for `true`. Effectively this removes the hybrid mode as well since there's no other way to enable it.
PR Close#28616
Previously, `ngtsc` detected class inheritance in a way that only worked
in TS or ES2015 code. As a result, inheritance would not be detected for
code in ES5 format, such as when running `ngtsc` through `ngcc` to
transform old-style Angular code to ivy format.
This commit fixes it by delegating class inheritance detection to the
current `ReflectionHost`, which is able to correctly interpret the used
code format.
PR Close#28773
This commit turns off an unknown binding test that is specific
to the View Engine implementation. In Ivy, we do property validation
at runtime for jit, so this test does not apply.
PR Close#28740
Accounts for schemas in when validating properties in Ivy.
This PR resolves FW-819.
A couple of notes:
* I had to rework the test slightly, in order to have it fail when we expect it to. The one in master is passing since Ivy's validation runs during the update phase, rather than creation.
* I had to deviate from the design in FW-819 and not add an `enableSchema` instruction, because the schema is part of the `NgModule` scope, however the scope is only assigned to a component once all of the module's declarations have been resolved and some of them can be async. Instead, I opted to have the `schemas` on the component definition.
PR Close#28637
Since we build and publish the individual packages
using Bazel and `build.sh` has been removed, we can
safely remove the `rollup.config.js` files which are no
longer needed because the `ng_package` bazel rule
automatically handles the rollup settings and globals.
PR Close#28646
Currently errors thrown inside event handler in Ivy are caught and forwarded to the `ErrorHandler`, however this means that if they happen during a unit test, the test won't fail. These changes add a test-specific `ErrorHandler` that throws the error rather than logging it out.
PR Close#28707
Previously `DebugNode.classes` and `DebugNode.styles` mistakenly used an
object that is only *sometimes* a `StylingContext`. Also fixes a mistake
in `debug_node_spec.ts` where a test component was not declared in the
testing module.
There is still a bug here where `DebugNode` is not exposing *static*
values. This will need to be fixed in a follow up.
PR Close#28709
Prior to this fix if a root component was instantiated it create host
bindings, but never render them once update mode ran unless one or more
slot-allocated bindings were issued. Since styling in Ivy does not make
use of LView slots, the host bindings function never ran on the root
component.
This fix ensures that the `hostBindings` function does run for a root
component and also renders the schedlued styling instructions when
executed.
Jira Issue: FW-1062
PR Close#28664
Under Bazel, some compilerOptions in tsconfig.json are controlled by
downstream rules. The default tsconfig.json causes Bazel to print out
warnings about overriden settings.
This commit makes a backup of the original tsconfig.json and removes
tsconfig settings that are controlled by Bazel.
As part of this fix, JsonAst utils are refactored into separate package
and unit tests are added.
PR closes https://github.com/angular/angular/issues/28034
PR Close#28674
BREAKING CHANGE
Previous to this change, when a control was reset, value and status change
events would be emitted before the control was reset to pristine. As a
result, if one were to check a control's pristine state in a valueChange
listener, it would appear that the control was still dirty after reset.
This change delays emission of value and status change events until after
controls have been marked pristine. This means the pristine state will be
reset as expected if one checks in a listener.
Theoretically, there could be applications depending on checking whether a
control *used to be dirty*, so this is marked as breaking. In these cases,
apps should cache the state on the app side before calling reset.
Fixes#28130
PR Close#28395
This enabled dts flattening in the final distrubutable package.
Notes:
- For the time being this is an opt-in feature via the `ng_module` attribute `bundle_dts`, however in the near future this will be turned on by default.
- This only supports the legacy compiler `ngc`, as `ngtsc` emits namespaced imports `import * as __` from local modules which is not supported for the time being by API Extractor. See: https://github.com/Microsoft/web-build-tools/issues/1029
Ref: TOOL-611
PR Close#28588
The ultimate goal of this commit is to make use of fileNameToModuleName to
get the module specifier to use when generating an import, when that API is
available in the CompilerHost that ngtsc is created with.
As part of getting there, the way in which ngtsc tracks references and
generates import module specifiers is refactored considerably. References
are tracked with the Reference class, and previously ngtsc had several
different kinds of Reference. An AbsoluteReference represented a declaration
which needed to be imported via an absolute module specifier tracked in the
AbsoluteReference, and a RelativeReference represented a declaration from
the local program, imported via relative path or referred to directly by
identifier if possible. Thus, how to refer to a particular declaration was
encoded into the Reference type _at the time of creation of the Reference_.
This commit refactors that logic and reduces Reference to a single class
with no subclasses. A Reference represents a node being referenced, plus
context about how the node was located. This context includes a
"bestGuessOwningModule", the compiler's best guess at which absolute
module specifier has defined this reference. For example, if the compiler
arrives at the declaration of CommonModule via an import to @angular/common,
then any references obtained from CommonModule (e.g. NgIf) will also be
considered to be owned by @angular/common.
A ReferenceEmitter class and accompanying ReferenceEmitStrategy interface
are introduced. To produce an Expression referring to a given Reference'd
node, the ReferenceEmitter consults a sequence of ReferenceEmitStrategy
implementations.
Several different strategies are defined:
- LocalIdentifierStrategy: use local ts.Identifiers if available.
- AbsoluteModuleStrategy: if the Reference has a bestGuessOwningModule,
import the node via an absolute import from that module specifier.
- LogicalProjectStrategy: if the Reference is in the logical project
(is under the project rootDirs), import the node via a relative import.
- FileToModuleStrategy: use a FileToModuleHost to generate the module
specifier by which to import the node.
Depending on the availability of fileNameToModuleName in the CompilerHost,
then, a different collection of these strategies is used for compilation.
PR Close#28523
This commit introduces a new ngtsc sub-library, 'path', which contains
branded string types for the different kind of paths that ngtsc manipulates.
Having static types for these paths will reduce the number of path-related
bugs (especially on Windows) and will eliminate unnecessary defensive
normalizing.
See the README.md file for more detail.
PR Close#28523
Previously, ngtsc would throw an error if two decorators were matched on
the same class simultaneously. However, @Injectable is a special case, and
it appears frequently on component, directive, and pipe classes. For pipes
in particular, it's a common pattern to treat the pipe class also as an
injectable service.
ngtsc actually lacked the capability to compile multiple matching
decorators on a class, so this commit adds support for that. Decorator
handlers (and thus the decorators they match) are classified into three
categories: PRIMARY, SHARED, and WEAK.
PRIMARY handlers compile decorators that cannot coexist with other primary
decorators. The handlers for Component, Directive, Pipe, and NgModule are
marked as PRIMARY. A class may only have one decorator from this group.
SHARED handlers compile decorators that can coexist with others. Injectable
is the only decorator in this category, meaning it's valid to put an
@Injectable decorator on a previously decorated class.
WEAK handlers behave like SHARED, but are dropped if any non-WEAK handler
matches a class. The handler which compiles ngBaseDef is WEAK, since
ngBaseDef is only needed if a class doesn't otherwise have a decorator.
Tests are added to validate that @Injectable can coexist with the other
decorators and that an error is generated when mixing the primaries.
PR Close#28523
In the past, @Injectable had no side effects and existing Angular code is
therefore littered with @Injectable usage on classes which are not intended
to be injected.
A common example is:
@Injectable()
class Foo {
constructor(private notInjectable: string) {}
}
and somewhere else:
providers: [{provide: Foo, useFactory: ...})
Here, there is no need for Foo to be injectable - indeed, it's impossible
for the DI system to create an instance of it, as it has a non-injectable
constructor. The provider configures a factory for the DI system to be
able to create instances of Foo.
Adding @Injectable in Ivy signifies that the class's own constructor, and
not a provider, determines how the class will be created.
This commit adds logic to compile classes which are marked with @Injectable
but are otherwise not injectable, and create an ngInjectableDef field with
a factory function that throws an error. This way, existing code in the wild
continues to compile, but if someone attempts to use the injectable it will
fail with a useful error message.
In the case where strictInjectionParameters is set to true, a compile-time
error is thrown instead of the runtime error, as ngtsc has enough
information to determine when injection couldn't possibly be valid.
PR Close#28523
Translation of WriteKeyExpr expressions was not implemented in the ngtsc
expression translator. This resulted in binding expressions like
"target[key] = $event" not compiling.
This commit fixes the bug by implementing WriteKeyExpr translation.
PR Close#28523
Some applications use enum values in their host bindings:
@Component({
host: {
'[prop]': EnumType.Key,
}, ...
})
This commit changes the resolution of host properties to follow the enum
declaration and extract the correct value for the binding.
PR Close#28523
Testing of Ivy revealed two bugs in the AstMemoryEfficientTransformer
class, a part of existing View Engine compiler infrastructure that's
reused in Ivy. These bugs cause AST expressions not to be transformed
under certain circumstances.
The fix is simple, and tests are added to ensure the specific expression
forms that trigger the issue compile properly under Ivy.
PR Close#28523
cexbrayat
Alex Rickabaugh
Jason Aden
Pete Bacon Darwin
Dave
George Kalpakas
Paul Gschwendtner
Jon Grunewald
Marc Laval
Judy Bogart
Kara
Ben Lesh
Andrew Kushnir
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