Updates the tsickle version in the repository and accounts for its changes in
the `compiler-cli` package. Tsickle made a breaking change in the minor version
segment bump that would break the use with `@angular/compiler-cli`
Additionally the tsickle version for `@angular/bazel` is updated since
we updated `@bazel/typescript` to also account for the breaking changes.
See: 78a0528107
PR Close#47018
The diagnostic of the component missing member comes from the ts service,
so the all code fixes for it are delegated to the ts service.
The code fixes are placed in the LS package because only LS can benefit from
it now, and The LS knows how to provide code fixes by the diagnostic and NgCompiler.
The class `CodeFixes` is useful to extend the code fixes if LS needs to
provide more code fixes for the template in the future. The ts service uses
the same way to provide code fixes.
1622247636/src/services/codeFixProvider.ts (L22)
Fixes https://github.com/angular/vscode-ng-language-service/issues/1610
PR Close#46764
improve the error message for non-standalone components which are not
exported from their module, and that are also imported directly as if
they were standalone
this change simply adds the suggestion to the developer to import the
ngModule instead
resolves#46004
PR Close#46114
The source-map package now requires the
`SourceMapConsumer`/`SourceMapGenerator` classes to be instantiated
asynchronously. This commit updates our tests to account for that.
PR Close#46888
The source-map package is no longer explicitly used in the
`compiler-cli` package and therefore can be removed from the ESBuild
bundling, denoting it as external. This should be a noop.
PR Close#46888
The extended diagnostics about missing control flow directive was only mentioning that the `CommonModule` should be imported.
Now that the control flow directives are available as standalone, the message mentions that directive itself can be imported.
The message now also mentions which import should be used for the directive (as it can be tricky to figure out that `NgForOf` is the directive corresponding to `*ngFor`).
PR Close#46846
After a bugfix in #46096, the compiler is now better capable of detecting pipes
which require an inline type constructor. However, there is an issue in how all
pipes are considered when verifying the inline type-ctor requirement: it should
only check actually used pipes.
Fixes#46747
PR Close#46807
This commit adds an extended diagnostics check that is similar to the nullish
coalescing check, but targeting optional chains. If the receiver expression
of the optional chain is non-nullable, then the extended diagnostic can report
an error or warning that can be fixed by changing the optional chain into a
regular access.
Closes#44870
PR Close#46686
This commit adds the `createNgModuleRef` function alias to the public API. The alias is called `createNgModule`. The `createNgModule` name is more consistent with the rest of the API surface, where functions that return `*Ref`s don't include the `Ref` into the function name, for example: `createPlatform`, `ViewContainerRef.createComponent`, etc.
DEPRECATED:
The `createNgModuleRef` is deprecated in favor of newly added `createNgModule` one.
PR Close#46789
This commit adds an extended diagnostic which warns when style suffixes such as '.px'
are used with attribute bindings (attr.width.px).
Fixes#36256
PR Close#46651
In the case that a user accidentally forgot the let keyword, they dont get a very clear indicator of there being a problem.
They get an issue in the template iteration at runtime. This diagnostic will warn the user when the let keyword is missing.
PR Close#46683
https://angular.io/guide/attribute-binding#attribute-class-and-style-bindings
Angular supports `attr.`, `style.`, and `class.` binding prefixes to
bind attributes, styles, and classes. If the key does not have the
binding syntax `[]` or the value does not have an interpolation `{{}}`,
the attribute will not be interpreted as a binding.
This diagnostic warns the user when the attributes listed above will not
be interpreted as bindings.
resolves#46137
PR Close#46161
In Bazel worker-land, workers which use incremental compilation must still
emit all declared outputs and cannot rely on these outputs persisting from
previous builds.
This commit adds a flag to `performCompilation` which can be used by the
worker infrastructure to instruct the compiler to always emit all possible
output files, regardless of any incremental build optimizations.
PR Close#46355
This commit adds an extended diagnostics check that verifies that all control flow directives (such as `ngIf`, `ngFor`) have the necessary directives imported in standalone components. Currently there is no diagnostics produced for such cases, which makes it harder to detect and find problems.
PR Close#46146
An inline type-check block is required when a reference to a component class
cannot be emitted from an ngtypecheck shim file, but the logic to detect this
situation did not consider the configured `rootDir`. When a `rootDir` is
configured the reference emitter does not allow generating an import outside
this directory, which meant that a shim file wouldn't be able to reference
the component class. Consequently, type-check block generation would fail
with a fatal error that is unaccounted for, as gathering diagnostics should
be non-fallible.
This commit fixes the problem by leveraging the existing `canReferenceType`
logic of the type-checking `Environment`, instead of the rudimentary check
whether the class is exported as top-level symbol (`checkIfClassIsExported`).
Instead, `canReferenceType` pre-flights the generation of an import using the
`ReferenceEmitter` to tell exactly whether it will succeed or not; thus taking
into account the `rootDirs` constraint as well.
Fixes#44999
PR Close#46096
Saves us some bytes by not emitting `providers` in `defineInjector`. While the amount of bytes isn't huge, I think that this change is worthwhile, because `ng generate` currently generates `providers: []` with every `NgModule` which users can forget to remove.
PR Close#46301
When generating .d.ts metadata for NgModules, by default we emit type
references to their declarations, imports, and exports. However, this
information is not necessarily useful to consumers. References to private
directives (those that aren't exported by the NgModule) for example aren't
at all useful as they can only affect other components declared in the
NgModule. References to imports are of limited usefulness - they might be
helpful for an IDE to understand the DI structure of an application, but
aren't at all used by a downstream compiler.
Generating this metadata is not without cost. When an incremental build
system uses changes in inputs to determine when a rebuild is necessary, any
changes in .d.ts files might cause downstream targets to rebuild. If those
.d.ts changes are in the "private" side of the NgModule (imports or non-
exported directives/pipes), then these rebuilds are wholly unnecessary.
This commit introduces the `onlyPublishPublicTypingsForNgModules` flag for
the compiler. When this flag is set, the compiler will filter the emitted
references in NgModule .d.ts output and only reference those directives/
pipes that are exported from the NgModule (its public API surface). Omitting
the flag preserves the existing behavior of emitting all references, both
public and private.
This is especially useful for build systems such as Bazel.
PR Close#45894
This commit updates the error message to use correct info depending on whether a component is standalone or not. Previously we were always referring to @NgModules as a place to fix the issue, but not we also mention @Component when needed (for standalone components).
PR Close#46159
Angular generally supports cycles between components in the same NgModule.
We have a mechanism of moving the component scope declaration into the
NgModule file in this case. This ensures that Angular never itself
introduces an import which creates a cycle.
What happens if the cycle already exists in the user's program, though, is a
bit different. In these cases, the "correct" emit for Angular is to generate
the component scope (whether direct or remote) inside of a closure, to
prevent evaluating the scope's references until module evaluation is
complete and all cyclic imports have been resolved. We don't want to do this
for *all* scopes because the code size cost of emitting a function wrapper
is non-zero.
In this fix, we take the presence of a `forwardRef` in a component's
`imports` or in an NgModule `declarations` or `imports` as a sign that
component scopes emitted into those files need to be protected against
cyclic references. In a future commit, we may introduce a warning or error
if cyclic imports are not protected behind `forwardRef` in these cases, but
this will take some time to implement.
PR Close#46139
This commit improves the reported error when importing e.g. `RouterModule.forRoot()`
from within `Component.imports`. Such import is not supported, as standalone components
can only refer to other standalone entities or NgModules in their `imports` array;
`ModuleWithProviders` are not supported as `Component.imports` is meant to be used
for the compilation scope of the component, _not_ for configuring DI.
Closes#46003
PR Close#46009
This commit moves the foreign function resolver logic for detecting a
`ModuleWithProviders` in a return type position of a function call, as the logic can
then be reused for standalone components in a subsequent commit.
PR Close#46009
The formatting of the `babel_ast_host.ts` file is invalid due to a
recently-merged PR. The PR had a passing `lint` state but this seemed
to just appear like this because the Git comparison range on upstream
branches can become invalid (due to a known bug in CircleCI -- reported)
PR Close#46082
update the error message presented during aot compilation when an unrecognized
tag/element is found in a standalone component so that it does not mention
the ngModule anymore
Note: the jit variant is present in PR #45920resolves#45818
PR Close#45919
This commit accounts for the Babel types changes. Some properties
can now also be `undefined` so existing checks/assertions had to
be adjusted to also capture `undefined` (along with `null`).
Additionally, in preparation for a new ECMA proposal, Babel types
seem to have been updated to include private names in object property
keys. This is not necessarily the case for object expressions, but
could be for object patterns (in the future -- when implemented).
More details: https://github.com/babel/babel/pull/14304 and
https://github.com/tc39/proposal-destructuring-private.
PR Close#45967
This commit fixes a small issue in the logic around the calculation of
template scopes for standalone components. These scopes include a
`Reference` for each dependency of a standalone component, which is used to
generate references to that dependency in various contexts.
Previously, the `Reference` used for a dependency was the one generated from
its own metadata. For example, a referenced directive used the `Reference`
that was created when analyzing the directive declaration itself. This still
works, as the compiler is always able to emit a reference to any valid
`Reference`. However, it's not optimal.
The `Reference` which should be used instead is the one generated from
analyzing the standalone component's `imports` array, which has knowledge of
how the dependency is referenced from within the standalone component's file
itself. This allows the compiler to skip creating a new import for the
dependency when emitting the standalone component, and use the existing,
user-authored import instead. This saves on code size and avoids taxing the
bundler with unnecessary imports.
PR Close#46029
The Angular compiler performs cycle detection when generating imports within
component files. This was previously necessary as reifying dependencies
discovered via NgModules into the component output could add imports that
weren't present in the original component and potentially create cycles.
Doing this could cause order-of-execution issues with existing user imports,
so the compiler detects this case and falls back to an alternative way of
specifying component dependencies that doesn't risk creating cycles.
For standalone components, Angular does not need to add new imports to the
component file as the user has already explicitly referenced dependencies
in the `@Component.imports`. As a result, the cycle detection can be
skipped.
Correctly authoring a program with import cycles is always challenging. One
side of a cyclic import will always initially evaluate to `undefined`, and
this can result in errors in the component definition when this happens
within component `imports`.
Our compiler _could_ detect the cycle and choose to wrap the component
dependencies in an automatic closure instead, avoiding any issues with
`undefined` during an eager evaluation. However, this commit makes an active
choice not to do that as it only serves to mask the problems with cyclic
imports. Future refactorings may cause the "other half" of the cycle to
break. Users should instead be aware of the potential problems with cycles
and explicitly defer evaluations with `forwardRef` where needed. This
ensures that future implementations of Angular compilation which may not be
able to automatically detect import cycles and correct accordingly can still
compile such components.
PR Close#46029
When an external template is read, adds the template file to to the project which contains.
This is necessary to keep the projects open when navigating away from HTML files.
Since a `tsconfig` cannot express including non-TS files,
we need another way to indicate the template files are considered part of the project.
Note that this does not ensure that the project in question _directly_ contains the component
file. That is, the project might just include the component file through the program rather
than directly in the `include` glob of the `tsconfig`. This distinction is somewhat important
because the TypeScript language service/server prefers projects which _directly_ contain the TS
file (see `projectContainsInfoDirectly` in the TS codebase). What this means it that there can
possibly be a different project used between the TS and HTML files.
For example, in Nx projects, the referenced configs are `tsconfig.app.json` and
`tsconfig.editor.json`. `tsconfig.app.json` comes first in the base `tsconfig.json` and
contains the entry point of the app. `tsconfig.editor.json` contains the `**.ts` glob of all TS
files. This means that `tsconfig.editor.json` will be preferred by the TS server for TS files
but the `tsconfig.app.json` will be used for HTML files since it comes first and we cannot
effectively express `projectContainsInfoDirectly` for HTML files.
We could consider also updating the language server implementation to attempt
to select the project to use for the template file based on which project
contains its component file directly, using either the internal `project.projectContainsInfoDirectly`
or as a workaround, check `project.isRoot(componentTsFile)`.
Finally, keeping the projects open is hugely important in the solution style config case like
Nx. When a TS file is opened, TypeScript will only retain `tsconfig.editor.json` and not
`tsconfig.app.json`. However, if our extension does not also know to select
`tsconfig.editor.json`, it will automatically select `tsconfig.app.json` since it is defined
first in the `tsconfig.json` file. So we need to teach TS server that we are (1) interested in
keeping projects open when there is an HTML file open and (2) optionally attempt to do this
_only_ for projects that we know the TS language service will prioritize in TS files (i.e.,
attempt to only keep `tsconfig.editor.json` open and allow `tsconfig.app.json` to close)
and prioritize that project for all requests.
fixes https://github.com/angular/vscode-ng-language-service/issues/1623
fixes https://github.com/angular/vscode-ng-language-service/issues/876
PR Close#45601
In PR #45405, the Angular Package Format (APF) was updated so that
secondary entry-points (such as `@angular/common/http`) do not have
their own `package.json` file, as they used to. Instead, the paths to
their various formats and types are exposed via the primary
`package.json` file's `exports` property. As an example, see the v13
[@angular/common/http/package.json][1] and compare it with the v14
[@angular/common/package.json > exports][2].
Previously, `ngcc` was not able to analyze such v14+ entry-points and
would instead error as it considered such entry-points missing.
This commit addresses the issue by detecting this situation and
synthesizing a `package.json` file for the secondary entry-points based
on the `exports` property of the primary `package.json` file. This data
is only used by `ngcc` in order to determine that the entry-point does
not need further processing, since it is already in Ivy format.
[1]: https://unpkg.com/browse/@angular/common@13.3.5/http/package.json
[2]: https://unpkg.com/browse/@angular/common@14.0.0-next.15/package.json
PR Close#45833
Move the `loadPackageJson()` helper (and associated generic types, such
as `JsonObject`) from `packages/entry_point.ts` to `utils.ts` and also
rename it to `loadJson()`. This way, they can be used in other places in
future commits, without introducing cyclical dependencies.
PR Close#45833
The NodeJS Bazel linker does not work well on Windows because there
is no sandboxing and linker processes from different tests will attempt
to modify the same `node_modules`, causing concurrency race conditions
and resulting in flakiness.
PR Close#45872
This commit improves the error message for using `imports` on a component
that isn't set to `standalone: true`. Two concrete improvements are made:
* A related information message is added to the diagnostic which suggests
the fix of adding `standalone: true`.
* The component is marked as poisoned, preventing other errors which might
be caused by an incorrectly configured template scope from being generated
and thus masking the original problem.
Fixes#45850
PR Close#45851
In AOT compilations, the `strictInjectionParameters` compiler option can
be enabled to report errors when an `@Injectable` annotated class has a
constructor with parameters that do not provide an injection token, e.g.
only a primitive type or interface.
Since Ivy it's become required that any class with Angular behavior
(e.g. the `ngOnDestroy` lifecycle hook) is decorated using an Angular
decorator, which meant that `@Injectable()` may need to have been added
to abstract base classes. Doing so would then report an error if
`strictInjectionParameters` is enabled, if the abstract class has an
incompatible constructor for DI purposes. This may be fine though, as
a subclass may call the constructor explicitly without relying on
Angular's DI mechanism.
Therefore, this commit excludes abstract classes from the
`strictInjectionParameters` check. This avoids an error from being
reported at compile time. If the constructor ends up being used by
Angular's DI system at runtime, then the factory function of the
abstract class will throw an error by means of the `ɵɵinvalidFactory`
instruction.
In addition to the runtime error, this commit also analyzes the inheritance
chain of an injectable without a constructor to verify that their inherited
constructor is valid.
Closes#37914
PR Close#44615
Excludes styles that resolve to empty strings from the emitted metadata so that they don't result in empty `<style>` tags at runtime.
Fixes#31191.
PR Close#45459
Changes the message from:
```
The component 'HelloComponent' appears in 'imports', but is not standalone
and cannot be imported directly It must be imported via an NgModule.
```
to
```
The component 'HelloComponent' appears in 'imports', but is not standalone
and cannot be imported directly. It must be imported via an NgModule.
```
PR Close#45827
The analysis phase of the compiler should operate on individual classes, independently
of the analysis of other classes. The validation that `Component.imports` only
contains standalone entities or NgModules however did happen during the analysis phase,
introducing a dependency on other classes and causing inconsistencies due to ordering
and/or asynchronous timing differences.
This commit fixes the issue by moving the validation to the resolve phase, which occurs
after all classes have been analyzed.
Fixes#45819
PR Close#45827
This commit updates the logic to detect a situation when a standalone component is used in the NgModule-based bootstrap (`@NgModule.bootstrap`). Both AOT and JIT compilers are updated to handle this situation.
PR Close#45825
In v14, the partial compilation output of components have changed in a way
that prevents older versions of Angular to compile the partial declarations
correctly.
In particular, we used to emit used directives/components in separate arrays called
`components` and `directives`, and used pipes in a property called `pipes`:
```js
TestComponent.ɵcmp = i0.ɵɵngDeclareComponent({
minVersion: "12.0.0",
version: "13.3.0",
type: TestComponent,
selector: "ng-component",
ngImport: i0,
template: ``,
isInline: true,
directives: [{ type: i1.SomeDir, selector: "[some-dir]" }],
components: [{ type: i1.SomeCmp, selector: "some-cmp" }],
pipes: { 'async': i2.AsyncPipe },
});
```
In the above example, the `version` property indicates which exact compiler
version was used to compile the component, but the `minVersion` allows older
versions of the compiler/Angular linker to "link" the partial declaration to
its final AOT compilation output.
In v14, the used directives, components and pipes are now emitted together
into a single array under the `dependencies` property:
```js
TestComponent.ɵcmp = i0.ɵɵngDeclareComponent({
minVersion: "12.0.0",
version: "13.3.0",
type: TestComponent,
selector: "ng-component",
ngImport: i0,
template: ``,
isInline: true,
dependencies: [
{ kind: "directive", type: i1.SomeDir, selector: "[some-dir]" },
{ kind: "component", type: i1.SomeCmp, selector: "some-cmp" },
{ kind: "pipe", type: i2.AsyncPipe },
],
});
```
This change has been made in support of standalone components, but it does mean
that older compiler versions can no longer link these partial declarations
as desirable as none of the components, directives and pipes would be included
in the AOT-compiled code.
By increasing the `minVersion` property, we hint to older compiler versions that
they are not capable of processing the partial declaration. This allows reporting
an error at compile time instead of resulting in runtime failures due to missing
components, directives and pipes.
PR Close#45782
Adds support for TypeScript 4.7. Changes include:
* Bumping the TS version as well as some Bazel dependencies to include https://github.com/bazelbuild/rules_nodejs/pull/3420.
* Adding a backwards-compatibility layer for calls to `updateTypeParameterDeclaration`.
* Making `LView` generic in order to make it easier to type the context based on the usage. Currently the context can be 4 different types which coupled with stricter type checking would required a lot of extra casting all over `core`.
* Fixing a bunch of miscellaneous type errors.
* Removing assertions of `ReferenceEntry.isDefinition` in a few of the language service tests. The field isn't returned by TS anymore and we weren't using it for anything.
* Resolving in error in the language service that was caused by TS attempting to parse HTML files when we try to open them. Previous TS was silently setting them as `ScriptKind.Unknown` and ignoring the errors, but now it throws. I've worked around it by setting them as `ScriptKind.JSX`.
PR Close#45749
Before standalone, everything that could appear in an NgModule's `imports`
was relevant to DI, and needed to be emitted in the `imports` of the
generated `InjectorDef` definition. With the introduction of standalone
types, NgModule `imports` can now contain components, directives, and pipes
which are standalone. Only standalone components need to be included in
the `imports` of the generated injector definition - directives and pipes
have no effect on DI. Having them present doesn't cause any errors in the
runtime (they're filtered out by the injector itself) but it does prevent
tree-shaking.
With this commit, the generation of `InjectorDef` now filters the `imports`
to exclude directives and pipes as much as possible. It's not _always_
possible because an expression in `imports` may pull in both a directive and
a `ModuleWithProviders` reference, and we have no way of referencing just
the MWP part of that expression. Therefore this is an optimization, not a
rule of `InjectorDef` compilation.
PR Close#45701
Previously, the NgModule handler would resolve the `imports` field as one
unit, producing an array of `Reference`s. With this refactoring, if
`imports` is a literal array, each individual element will be resolved
independently. This will allow filtering in the future at the element level,
since there will be a separate `ts.Expression` for each individual element.
PR Close#45701
This commit updates the `ForeignFunctionResolver` used by the NgModule
handler to resolve `ModuleWithProvider` types. Previously, this resolver
returned the NgModule `Reference` directly, but there are two problems with
this:
* It's not completely accurate, as the expression returned by the MWP call
will not return the NgModule at runtime.
* We need the ability to distinguish the MWP call itself from an ordinary
NgModule reference in future optimizations.
PR Close#45701
This commit reworks the partial evaluation system's concept of a
ForeignFunctionResolver. Previously, resolvers were expected to return a
`ts.Expression` which the partial evaluator would continue evaluating,
eventually returning a value.
This works well for "transparent" foreign functions like `forwardRef`,
but for things like `ModuleWithProviders` it breaks down, because the
desired resolution value (the NgModule `Reference`) is _not_ the "correct"
evaluation of the function call.
To support better FFR implementations, this commit refactors the FFR system
so that resolvers operate on the `ts.CallExpression` instead, and are
given a callback to resolve further expressions if needed. If they cannot
resolve a given call expression, they have an `unresolvable` value that they
can return to indicate that.
PR Close#45701
This commit bundles tests for standalone components that are possible after
previous implementation commits. Most new tests are compliance tests, but
a test is also included to validate that the template type-checking system
can work with standalone components as well.
PR Close#45672
This commit adds a type field to .d.ts metadata for directives, components,
and pipes which carries a boolean literal indicating whether the given type
is standalone or not. For backwards compatibility, this flag defaults to
`false`.
Tests are added to validate that standalone types coming from .d.ts files
can be correctly imported into new standalone components.
PR Close#45672
This commit propagates the `isStandalone` flag for a component, directive,
or pipe during partial compilation of a standalone declaration. This flag
allows the linker to properly process a standalone declaration that it
encounters.
PR Close#45672
Standalone component scopes were first implemented in the
`ComponentDecoratorHandler` itself, due to an assumption that "standalone"
allowed for a localized analysis of the component's dependencies. However,
this is not strictly true. Other compiler machinery also needs to understand
component scopes, including standalone component scopes. A good example is
the template type-checking engine, which uses a `ComponentScopeReader` to
build full metadata objects (that is, metadata that considers the entire
inheritance chain) for type-checking purposes. Therefore, the
`ComponentScopeReader` should be able to give the scope for a standalone
component.
To achieve this, a new `StandaloneComponentScopeReader` is implemented, and
the return type of `ComponentScopeReader.getScopeForComponent` is expanded
to express standalone scopes. This cleanly integrates the "standalone"
concept into the existing machinery.
PR Close#45672
This commit expands on the unified dependency tracking in the previous
commit and adds tracking of NgModule dependencies. These are not used for
standard components, but are emitted for standalone components to allow the
runtime to roll up providers from those NgModules into standalone injectors.
PR Close#45672
Previously, the compiler tracked directives and pipes in template scopes
separately. This commit refactors the scope system to unify them into a
single data structure, disambiguated by a `kind` field.
PR Close#45672
Previously, the compiler would represent template dependencies of a
component in its component definition through separate fields (`directives`,
`pipes`).
This commit refactors the compiler/runtime interface to use a single field
(`dependencies`). The runtime component definition object still has separate
`directiveDefs` and `pipeDefs`, which are calculated from the `dependencies`
when the definition is evaluated.
This change is also reflected in partially compiled declarations. To ensure
compatibility with partially compiled code already on NPM, the linker
will still honor the old form of declaration (with separate fields).
PR Close#45672
`PipeSymbol` contains logic to detect changes in the public API surface of
pipes, which includes the pipe name. However, the pipe handler inadvertently
uses the pipe class name instead of the actual pipe name to initialize the
`PipeSymbol`, which breaks incremental compilation when pipe names change.
There is a test which attempts to verify that this logic is working, but the
test actually passes for a different reason. The test swaps the names of 2
pipes that are both used in a component, and asserts that the component is
re-emitted, theoretically because the public APIs of the pipes is changed.
However, the emit order of the references to the pipes depends on the order
in which they match in the template, which changes when the names are
swapped. This ordering dependency is picked up by the semantic dependency
tracking system, and is what actually causes the component to be re-emitted
and therefore the pipe test to pass in spite of the bug with name tracking.
This commit fixes the `PipeSymbol` initialization to use the correct pipe
name. The test is still flawed in that it's sensitive to the ordering of
pipe emits, but this ordering is due to change soon as a result of the
standalone components work, so this issue will be resolved in a future
commit.
PR Close#45672
This commit adds a new internal scope to `R3Injector` for
`EnvironmentInjector`s specifically. This will allow us to scope services to
the environment side of the injector hierarchy specifically, as opposed to
the `'any'` scope which also includes view-side injectors created via
`Injector.create`. For now, this functionality is not exposed publicly, but
is available to use within `@angular/core` only.
PR Close#45626
This links back each placeholder in a message to the original Angular template span which defines its expression. This is useful for understanding where each placeholder comes from in the context of the full message.
PR Close#45606
This commit fixes an inconsistency where a type check location for an inline
type check block would be interpreted to occur in a type-checking shim instead.
This resulted in a missing template mapping, causing a crash due to an unsafe
non-null assertion operator.
In the prior commit the `TcbLocation` has been extended with an `isShimFile`
field that is now being used to look for the template mapping in the correct
location. Additionally, the non-null assertion operator is refactored such
that a missing template mapping will now ignore the warning instead of crashing
the compiler.
Fixes#45413
PR Close#45454
Extends `TcbPosition` with a field that indicates whether the `tcbPath` is a
type-checking shim file, or an original source file with an inline type check
block.
This field is used in an upcoming commit that fixes an inconsistency with how
inline type check blocks are incorrectly interpreted as a type-checking shim
file instead.
PR Close#45454
Inline type check blocks (TCBs) are emitted into the original source file, but
node positions would still be represented as a `ShimLocation` with a `shimPath`
corresponding with the type-checking shim file. This results in inconsistencies,
as the `positionInShimFile` field of `ShimLocation` would not correspond with
the `shimPath` of that `ShimLocation`.
This commit is a precursor to letting `ShimLocation` also represent the correct
location for inline type check blocks, by renaming the interface to
`TcbLocation`. A followup commit addresses the actual inconsistency.
PR Close#45454
This commit carries the `standalone` flag forward from a directive/pipe
into its generated directive/pipe definition, allowing the runtime to
recognize standalone entities.
PR Close#44973
This commit implements the next step of Angular's "standalone" functionality,
by allowing directives/components/pipes declared as `standalone` to be imported
into NgModules. Errors are raised when such a type is not standalone but is
included in an NgModule's imports.
PR Close#44973
This commit moves the error for declaring a standalone directive/component/
pipe to the `LocalModuleScopeRegistry`. Previously the error was produced
by the `NgModuleHandler` directly.
Producing the error in the scope registry allows the scope to be marked as
poisoned when the error occurs, preventing spurious downstream errors from
surfacing.
PR Close#44973
This commit improves the error messages generated by the compiler when NgModule
scope analysis finds structural issues within a compilation. In particular,
errors are now shown on a node within the metadata of the NgModule which
produced the error, as opposed to the node of the erroneous declaration/import/
export. For example, if an NgModule declares `declarations: [FooCmp]` and
`FooCmp` is not annotated as a directive, component, or pipe, the error is now
shown on the reference to `FooCmp` in the `declarations` array expression.
Previously, the error would have been shown on `FooCmp` itself, with a mention
in the error text of the NgModule name.
Additional error context in some cases has been moved to related information
attached to the diagnostic, which further improves the legibility of such
errors. Error text has also been adjusted to be more succinct, since more info
about the error is now delivered through context.
PR Close#44973
Before the `SemanticSymbol` system which now powers incremental compilation,
the compiler previously needed to track which NgModules contributed to the
scope of a component in order to recompile correctly if something changed.
This commit removes that legacy field (which had no consumers) as well as the
logic to populate it.
PR Close#44973
Recent changes in `rules_nodejs` caused the test case copy file actions
to be transitioned into the `exec` configuration, resulting in much larger
file paths. These paths break on Windows with the shell argument limit, and
with the path limit, causing errors like:
```
ERROR: C:/users/circleci/ng/packages/compiler-cli/test/compliance/test_cases/BUILD.bazel:9:12: Copying file packages/compiler-cli/test/compliance/test_cases/r3_compiler_compliance/components_and_directives/value_composition/structural_directives_if_directive_def.js failed: (Exit 1): cmd.exe failed: error executing command
cd /d C:/users/circleci/_bazel_circleci/u4uoan2j/execroot/angular
SET PATH=C:\Program Files\Git\usr\bin;C:\Program Files\Git\bin;C:\Windows;C:\Windows\System32;C:\Windows\System32\WindowsPowerShell\v1.0
SET RUNFILES_MANIFEST_ONLY=1
cmd.exe /C bazel-out\x64_windows-opt-exec-2B5CBBC6\bin\packages\compiler-cli\test\compliance\test_cases\test_cases--1973427149-cmd.bat
The system cannot find the path specified
```
https://app.circleci.com/pipelines/github/angular/angular/44038/workflows/4b530cb2-f232-4e1d-b35a-e6e085151d08/jobs/1140017
PR Close#45431
As mentioned in previous commits (check them for more details), `@bazel/typescript`
no longer contains `ts_library`-specific code, so we no longer need that dependency.
PR Close#45431
.substr() is deprecated so we replace it with functions which work similarily but aren't deprecated
Signed-off-by: Tobias Speicher <rootcommander@gmail.com>
PR Close#45397
When we have an event listener inside an embedded view, we generate a `restoreView` call which saves the view inside of the LFrame. The problem is that we don't clear it until it gets overwritten which can lead to memory leaks.
These changes rework the generated code in order to generate a `resetView` call which will clear the view from the LFrame.
Fixes#42848.
PR Close#43075
Drops support for TypeScript older than 4.6 and removes some workarounds in the compiler.
BREAKING CHANGE:
TypeScript versions older than 4.6 are no longer supported.
PR Close#45394
In early versions of Angular, it was sometimes necessary to provide a
`moduleId` to `@Component` metadata, and the common pattern for doing this
was to set `moduleId: module.id`. This relied on the bundler to fill in a
value for `module.id`.
However, due to the superficial similarity between `Component.moduleId` and
`NgModule.id`, many users ended up setting `id: module.id` in their
NgModules. This is an anti-pattern that has a few negative effects,
including preventing the NgModule from tree-shaking properly.
This commit changes the compiler to ignore `id: module.id` in NgModules, and
instead provide a warning which suggests removing the line entirely.
PR Close#45024
Previously, the `TraitCompiler` would naively consider a compilation as
failed if either analysis or resolution produced any diagnostics. This
commit adjusts the logic to only consider error diagnostics, which allows
warnings to be produced from `DecoratorHandler`s.
This is a precursor commit to introducing such a warning. As such, the
logic here will be tested in the next commit.
PR Close#45024
Angular contains an NgModule registry, which allows a user to declare
NgModules with string ids and retrieve them via those ids, using the
`getNgModuleById` API.
Previously, we attempted to structure this registration in a clever fashion
to allow for tree-shaking of registered NgModules (that is, those with ids).
This sort of worked due to the accidental alignment of behaviors from the
different tree-shakers involved. However, this trick relies on the
generation of `.ngfactory` files and how they're specifically processed in
various bundling scenarios. We intend to remove `.ngfactory` files, hence
we can no longer rely on them in this way.
The correct solution here is to recognize that `@NgModule({id})` is
inherently declaring a global side-effect, and such classes should not
really be eligible for tree-shaking in the first place. This commit removes
all the old registration machinery, and standardizes on generating a side-
effectful call to `registerNgModuleType` for NgModules that have ids.
There is some risk here that NgModules with unnecessary `id`s may not
tree-shake as a result of this change, whereas they would have in previous
circumstances. The fix here should be to remove the `id` if it's not needed.
Specifying an `id` is a request that the NgModule be retained regardless of
any other references, in case it is later looked up by string id.
PR Close#45024
When `@angular/compiler` processes metadata and compiles a definition field,
it might also choose to return statements that are associated with that
definition, and should be included after the type being compiled. Currently,
the linker ignores these statements, as there are none generated that are
relevant in the linking operation.
A challenge to supporting such associated statements is that the linker
operates on "declare" expressions, and replaces those expressions with other
expressions. It does not have the capability to append statements after the
whole type. The linker actually faces this challenge with statements from
the `ConstantPool` as well, and solves this problem by generating an IIFE
expression that executes the statements and then returns the definition
expression.
Previously, an `EmitScope` processed the definition and converted it to an
expression, as well as collected constant statements from a `ConstantPool`.
A special `IifeEmitScope` implementation was used when emitting into a
context where top-level constant statements couldn't be added at all, and
uses the IIFE strategy in this case.
This commit adds blanket support for associated statements to the linker
using this IIFE strategy. The main `EmitScope` now uses the IIFE strategy to
emit associated statements, and `IifeEmitScope` has been renamed to
`LocalEmitScope`. Now, the `LocalEmitScope` represents constant statements
as associated statements to the main `EmitScope` implementation, so they
get included in the IIFE as well.
Tests are adjusted/added to cover this new behavior. This is a refactoring
commit because no live generated code is affected - there are no cases where
associated statements are present in linked definitions today.
PR Close#45024
The `compileNgModule` operation previously supported a flag `emitInline`,
which controlled whether template scoping information for the NgModule was
emitted directly into the compiled NgModule definition, or whether an
associated statement was generated which patched the information onto the
NgModule definition. Both options are useful in different contexts.
This commit changes this flag to an enum (and renames it), which allows for
a third option - do not emit any template scoping information. This option
is added to better represent the actual behavior of the Angular Linker,
which sometimes configures `compileNgModule` to use the side-effectful
statement generation but which does not actually emit such associated
statements. In other words, the linker effectively does not generate
scoping information for NgModules at all (in some configurations) and this
option more directly expresses that behavior.
This is a refactoring as no generated code is changed as a result of
introducing this flag, due to the linker's behavior of not emitting
associated statements.
PR Close#45024
Node.js v12 will become EOL on 2022-04-30. As a result, Angular CLI v14 will no longer support Node.js v12.
BREAKING CHANGE:
Support for Node.js v12 has been removed as it will become EOL on 2022-04-30. Please use Node.js v14.15 or later.
PR Close#45286
When parsing interpolations, the input string is _decoded_ from what was
in the orginal template. This means that we cannot soley rely on the input
string to compute source spans because it does not necessarily reflect
the exact content of the original template. Specifically, when there is
an HTML entity (i.e. ` `), this will show up in its decoded form
when processing the interpolation (' '). We need to compute offsets
using the original _encoded_ string.
Note that this problem only surfaces in the splitting of interpolations.
The spans to this point have already been tracked accurately. For
example, given the template ` <div></div>`, the source span for the
`div` is already correctly determined to be 6. Only when we encounter
interpolations with many parts do we run into situations where we need
to compute new spans for the individual parts of the interpolation.
PR Close#44811
Jasmine logs a warning when there's a `describe` with no tests. These changes fix one such case in the compiler that happens when the tests are run against Windows.
PR Close#45285
The `@angular/localize` package depends on a version of Babel that is two years
old, so this commit updates to the latest version.
Some changes were made to the linker and compliance tests to account for slight
changes in source maps, along with a few code updates because of changes to
the typings of Babel.
PR Close#44931
Proactively replaces our usages of the deprecated `ts.create*` methods in favor of using `ts.factory.create*` so that we're not surprised when the TS removes them in the future. Also accounts for some cases where the signature had changed.
PR Close#45134
Before this, the compiler resolves the value in the DTS as dynamic.
If the `trigger` is imported from `@angular/animations`, this PR will
use FFR to simulate the actual implementation in JS and extracts the
animation name.
PR Close#45107
In templates with several levels of nested nodes, it's common for several `elementStart`/`elementEnd` instructions to show up in a row which can be optimized away.
These changes add chaining support for `elementStart`, `elementEnd`, `elementContainerStart` and `elementContainerEnd` to shave off some bytes when possible.
PR Close#44994
This commit updates various places in the repo (mostly tests/examples) to drop all `.ngfactory` and `.ngsummary` imports as they are no longer needed in Ivy.
PR Close#44957
This commit implements the first phase of standalone components in the Angular
compiler. This mainly includes the scoping rules for standalone components
(`@Component({imports})`).
Significant functionality from the design is _not_ implemented by this PR,
including:
* imports of standalone components into NgModules.
* the provider aspect of standalone components
Future commits will address these issues, as we proceed with the design of
this feature.
PR Close#44812
In preparation for standalone components, this commit moves the logic which
determines the potential set of components/directives/pipes in a template into
a separate function. This is a simple but crucial refactoring that breaks the
assumption that all template scopes come from NgModules.
PR Close#44812
Previously each `DecoratorHandler` in the compiler was stored in a single file
in the 'annotations' package. The `ComponentDecoratorHandler` in particular was
several thousand lines long.
Prior to implementing the new standalone functionality for components, this
commit refactors 'annotations' to split these large files into their own build
targets with multiple separate files. This should make the implementation of
standalone significantly cleaner.
PR Close#44812
Refs http://b/214103351.
This happens if a user writes `<span i18n>Message</span>`. This is accepted as an internationalized message, but without a description. JSCompiler will throw an error in this situation because descriptions are generally required. Now, the Angular compiler will generate a suppression annotation so JSCompiler allows the syntax. This will ease an internal migration to JSCompiler-based i18n.
PR Close#44787
The logical filesystem would store a cached result based on the canonical path,
where the cached value contains the physical path that was originally provided.
This meant that other physical paths with an identical canonical path would use
a cached result derived from another physical path.
This inconsistency is not known to result in actual issues but is primarily
being made as a performance improvement, as using the provided physical paths
as cache key avoids the need to canonicalize the path if its result is already
cached.
PR Close#44798
The generated imports should normally use module specifiers that are valid for
use in production code, where arbitrary relative imports into e.g. node_modules
are not allowed. For template type-checking code it is however acceptable to
use relative imports, as such files are never emitted to JS code. It is
desirable to allow a filesystem relative import as fallback if an import would
otherwise fail to be generated, as doing so allows fewer situations from
needing an inline type constructor.
PR Close#44798
This commit removes the leftover `Identifiers` class that was used in the
ViewEngine compiler. The remaining usages of the `inlineInterpolate` and
`interpolate` instructions were refactored to make use of an
`InterpolationExpression` output expression to capture the argument list of an
interpolation expression. An attempt was made to refactor this further by
converting to the desired interpolation instruction immediately, but some
downstream consumers are designed in a way where the argument list itself is
needed, e.g. as other arguments need to be prepended/appended.
PR Close#44676
So-called "Quote expressions" were added in b6ec2387b3
to support foreign syntax to be used in Angular templates, requiring a custom
template transform to convert them somehow during compilation. Support for template
transforms was originally implemented in a43ed79ee7 but
has since been dropped. Since the compiler is not public API the quote expressions
should not have any usages anymore. Removing support for them can improve error
reporting for expressions that contain a `:`, e.g. binding to a URL without quotes:
```html
<a [href]="http://google.com">Click me</a>
```
Here, `http` would be parsed as foreign "http" quote expression with `//google.com` as
value, later reporting the error "Quotes are not supported for evaluation!" because
there was no template transform to convert that code.
Closes#40398
PR Close#44915
Attempting to run as is fails because we have `"type": "module"`. `shelljs` is a CommonJS module however, so we need to do a default import and destructure.
```
$ node packages/compiler-cli/test/compliance/update_all_goldens.js
const {exec} = require('shelljs');
^
ReferenceError: require is not defined in ES module scope, you can use import instead
This file is being treated as an ES module because it has a '.js' file extension and '/home/douglasparker/Source/ng/packages/compiler-cli/package.json' contains "type": "module". To treat it as a CommonJS script, rename it to use the '.cjs' file extension.
at file:///home/douglasparker/Source/ng/packages/compiler-cli/test/compliance/update_all_goldens.js:11:16
at ModuleJob.run (node:internal/modules/esm/module_job:183:25)
at async Loader.import (node:internal/modules/esm/loader:178:24)
at async Object.loadESM (node:internal/process/esm_loader:68:5)
at async handleMainPromise (node:internal/modules/run_main:63:12)
```
PR Close#44916
TypeScript configures `strictNullChecks` to be disabled by default, so the nullish
coalescing check should follow the same default. The rule actively depends on
`strictNullChecks`, as TypeScript doesn't include `null`/`undefined` in its types
otherwise so the check wouldn't have a way to differentiate between them.
This commit also takes the `strict` flag into account when `strictNullChecks` itself
is not configured.
PR Close#44862
The initial commit e9124b42d5 stored the errors rather than
throwing but did not store them in a place that was accessible to consumers. Instead,
the errors should be added to the IndexedComponent so they can be surfaced where the
index results are consumed
PR Close#44884
When the indexer encounters a location where the source span doesn't
match up with the expected identifier, the current visitor code throws
an error. Instead, this change creates an error and moves on to the next
template item. This allows the indexer to continue analysis even when
there are errors in the source mapping. In addition, it still allows callers
to surface those errors in their own way while still providing as much indexed
information as possible about a node.
PR Close#44825
An `ng-template` with an inline template (i.e. has a structural
directive) would previously not get an `undefined` `tagName` because the
logic assumed the element would be `t.Element` or `t.Content` and read
the tag name from the `name` property. For a `t.Template`, this exists
instead on the `t.tagName`. The final result would be an `tagName` of `undefined`
for the parent `t.Template`, causing failures in the indexer downstream.
This `undefined` value is actually expected in the renderer code, even
though the type does not specify this possibility. This change updates
the type of `tagName` to be `string|null` and explicitly handles the
case where there is a structural directive on an `ng-template`. You can
see how the two are differentiated in the compliance code that was
modified in this commit.
PR Close#44788
The previous fix for correcting spans with comments in
59eef29a6c
had the unfortunate side effect of _breaking_ the spans with comments
when there was leading whitespace. This happened because the previous
fix was testing one without a comment, identifying that the offset shouldn't
have anything added to it, and then removing that offset adjustment
(`offsets[i] + (expressionText.length - sourceToLex.length)`).
Upon further investigation, this offset adjustment _was actually
necessary_ for when the input had comments, but this was only because
the `stripComments` function used `trim` to remove whitespace for these
cases. This is the real problem -- not only does it create a ton of confusion
but also it means that the behavior of the lexer and resulting spans is
different between inputs with comments and inputs without comments.
After reviewing how the `inputLength` of `_ParseAST` was used, it
appears that the correct behavior would be to _not_ trim the input. The
`inputLength` is used to advance the current index beyond points which
have been processed. This _should_ include any whitespace. Additionally,
`inputLength` doesn't appear to be needed at all. When there was no
comment in the input, it was always equal to the `input.length` anyways.
When there _is_ a comment, it should include that comment anyways to
advance the index beyond the comment.
PR Close#44785
The original fix for svg elements in
92b23f4851
did not account for svg elements when they also had a structural
directive on them, making the node a template. This resulted in the
logic added in fix above not being applied.
PR Close#44785
Previously, if a bad extended diagnostic category was given, it would fail with the expected error as well as an unexpected assertion error:
```
$ ng build -c development
✔ Browser application bundle generation complete.
./src/main.ts - Error: Module build failed (from ./node_modules/@ngtools/webpack/src/ivy/index.js):
Error: Unexpected call to 'assertNever()' with value:
test
at /home/douglasparker/Source/ng-new/node_modules/@ngtools/webpack/src/ivy/loader.js:77:18
at processTicksAndRejections (internal/process/task_queues.js:95:5)
./src/polyfills.ts - Error: Module build failed (from ./node_modules/@ngtools/webpack/src/ivy/index.js):
Error: Unexpected call to 'assertNever()' with value:
test
at /home/douglasparker/Source/ng-new/node_modules/@ngtools/webpack/src/ivy/loader.js:77:18
at processTicksAndRejections (internal/process/task_queues.js:95:5)
Error: error NG4004: Angular compiler option "extendedDiagnostics.checks['invalidBananaInBox']" has an unknown diagnostic category: "test".
Allowed diagnostic categories are:
warning
error
suppress
```
The assertion comes from `ExtendedTemplateCheckerImpl`, which expects a well-formed configuration, yet the compiler would construct it even when errors were found. This commit skips constructing and running extended diagnostics if the configuration had errors, which should avoid triggering these assertion errors.
I'm unfortunately not able to actually test this change. The test passes even before the fix because the `ngc` binary and end-to-end tests [don't request diagnostics unless the configuration is considered valid](ed21f5c753/packages/compiler-cli/src/perform_compile.ts (L292-L293)). See [Slack](https://angular-team.slack.com/archives/C4WHZQMRA/p1642641305003800) for more details.
PR Close#44778
Refs #42966.
There were two remaining places where `_extendedTemplateDiagnostics` needed to be set which should have been removed in #44712 but got missed. This updates them to only require `strictTemplates` and not `_extendedTemplateDiagnostics` so the feature is properly enabled in production.
PR Close#44777
Refs #42966.
Extended diagnostics provide additional analysis about Angular templates by emitting warnings for specific patterns known to be error prone or cause developer confusion. Currently, there are two such diagnostics which are enabled by default:
* `invalidBananaInBox` emits a warning if a user writes a two-way binding backwards like `([foo])="bar"`, when they actually wanted `[(foo)]="bar"`.
* `nullishCoalescingNotNullable` emits a warning if a binding attempts to perform nullish coalescing (`??`) on a type which does not include `null` or `undefined`, such as `{{ foo ?? 'bar' }}` where `foo` is defined as `string` instead of `string | null`.
These diagnostics are enabled as warnings by default, but this can be configured in the `tsconfig.json` like so:
```jsonc
{
"angularCompilerOptions": {
"extendedDiagnostics": {
// The categories to use for specific diagnostics.
"checks": {
// Maps check name to its category.
"invalidBananaInBox": "suppress"
},
// The category to use for any diagnostics not listed in `checks` above.
"defaultCategory": "error"
}
}
}
```
Allowed categories for a diagnostic are `warning` (default), `error`, or `suppress`. `warning` emits the diagnostic but allows the compilation to succeed, `error` *will* fail the compilation, while `suppress` will ignore the diagnostic altogether.
The initial release has two diagnostics, and we are hoping to expand this longer term to add more diagnostics and provide additional insight into Angular templates to detect and surface developer mistakes *before* hours of debugging are wasted.
PR Close#44712
This commit reduces the analysis work that needs to happen during an
incremental rebuild by properly recording files for which no traits were found
in the set of files that have no traits, such that the same file doesn't have
to be reanalyzed during subsequent rebuilds. It also excludes shim files from
analysis.
PR Close#44731
Bundlers like Rollup may use an element access expression for an export
declaration, which causes ngcc to ignore those export declarations possibly
resulting in incomplete processing of packages.
Element access syntax may be used when the declared name is not considered
as valid JS identifier, but bundlers may be conservative in determining whether
an identifier can be used (to emit a property access) and opt for a string
literal in an element access instead.
The element access syntax introduces a problem for ngcc, where it wouldn't
consider such export as class declaration, causing them to be skipped. The
ngtsc compiler is implemented with the assumption that all class declarations
use a `ts.Identifier` as name, whereas the element access is using a string
literal for the declared name. This makes it troublesome for ngcc to support
this syntax form in UMD bundles.
To work around the problem, this function transforms these access expressions
into regular property accesses. The source text is parsed to an AST to allow
finding the element accesses in a robust way, after which the affected text
ranges are replaced with property accesses in the original source text.
Closes#44037
PR Close#44669
In the `Element` node of a parsed `<svg>` element, the `name` is recorded
as `:svg:svg`. When the Angular Indexer ran over this element, it would
attempt to find this name in the template text and fail, as the namespace
portion of the name was added automatically at parse time and is of course
missing from the original template.
This commit changes the indexer to detect these namespaced elements and only
search for the tag name.
PR Close#44678
When parsing a binding with a comment at the end of the expression, the
parser previously had logic to offset the parsed spans by the length of the
comment. This logic seemed not to serve any useful purpose, and instead
resulted in the corruption of the spans. For example, in the expression
`{{foo // comment}}`, the parser would map the parsed `foo` `PropertyRead`
node at the location of the characters 'ent' from the comment suffix.
This commit removes that logic, correcting the parsed spans of such nodes in
the presence of comments. Removing this logic does not seem to have caused
any tests to fail.
PR Close#44678
Previously, the Angular Indexer made an assumption that in any binding to
a property of an `ImplicitReceiver`, the property name begins at the start
of the binding. This is true for normal reads from `ImplicitReceiver` as
the implicit receiver has no representation in the template.
However, `ThisReceiver` inherits from `ImplicitReceiver` and _does_ have a
template representation. Such a binding looks like `{{this.foo}}`. This
commit corrects the logic of the indexer to use the `nameSpan` of the
property binding instead of its `sourceSpan` to locate the identifier.
PR Close#44678
Refs #42966.
This validates the `tsconfig.json` options for extended template diagnostics. It verifies:
* `strictTemplates` must be enabled if `extendedDiagnostics` have any explicit configuration.
* `extendedDiagnostics.defaultCategory` must be a valid `DiagnosticCategoryLabel`.
* `extendedDiagnostics.checks` keys must all be real diagnostics.
* `extendedDiagnostics.checks` values must all be valid `DiagnosticCategoryLabel`s.
These include new error codes, each of which prints out the exact property that was the issue and what the available options are to fix them.
It does disallow the config:
```json
{
"angularCompilerOptions": {
"strictTemplates": false,
"extendedDiagnostics": {
"defaultCategory": "suppress"
}
}
}
```
Such a configuration is technically valid and could be executed, but will be rejected by this verification logic. There isn't much reason to ever do this, since users could just drop `extendedDiagnostics` altogether and get the intended effect. This is unlikely to be a significant issue for users, so it is considered invalid for now to keep the implementation simple.
PR Close#44391
Refs #42966.
The `defaultCategory` option is used for any extended template diagnostics which do not have any specific category specified for them. It defaults to `warning`, since that is the most common behavior expected for users. This provides an easy way for users to promote all diagnostics to errors or suppress all diagnostics.
PR Close#44391
Refs #42966.
This updates `TemplateContext` to include a new `makeTemplateDiagnostic()` function which automatically uses the correct diagnostic category for that check. This makes sure that each diagnostic is emitted with the correct category. It also implicitly passes some known values like `component` and `code` to make the extended template diagnostics a little simpler. Diagnostics which are suppressed are never instantiated at all, which acts as a slight performance optimization since any emitted diagnostics would be ignored anyways.
Unfortunately, diagnostics still have access to `ctx.templateTypeChecker.makeTemplateDiagnostic()` to manually create diagnostics with a different category. Both banana in box and nullish coalescing checks include tests to make sure they respect a manually configured category. This convention should hopefully give a reasonable certainty that new diagnostics will use the correct reporting function, even if that is not strictly enforced.
PR Close#44391
Refs #42966.
This includes a mapping of extended template diagnostics to their associated diagnostic category. It is generated from the list of diagnostic names, so the list should always be implicitly kept up to date. Usage looks like:
```json
{
"angularCompilerOptions": {
"extendedDiagnostics": {
"checks": {
"invalidBananaInBox": "error",
"nullishCoalescingNotNullable": "suppress"
}
}
}
}
```
PR Close#44391
Refs #42966.
This is a static array of all the 1P extended template diagnostic factories built into the Angular compiler directly. It provides an encapsulated list of all diagnostics rather than requiring users to manually list each one individually.
PR Close#44391
Refs #42966.
This moves extended template check factory invocations into the checker itself, where it can provide a more consistent API contract. Factories are called with compiler options and may return a `TemplateCheck` or `undefined` if the current options do not support that check. This allows `nullishCoalescingNotNullable` to disable itself when `strictNullChecks` is disabled without throwing errors. This gives extended template diagnostics a stronger abstraction model to define their behavior with.
PR Close#44391
Refs #42966.
The enum of extended template diagnostic names allows a global registry of first-party diagnostics with a developer-friendly string name which can be used for configuration. This name is used in the new `TemplateCheckFactory` to bind the name to a particular `ErrorCode` and make both available *before* constructing the actual template check, which is necessary to configure it appropriately.
PR Close#44391
In `language-service`, the `checker.getDirectiveMetadata` doesn't return the animations meta of the `Component`.
but it's useful for animation completion.
PR Close#44630
The changes in 2028c3933f caused method
calls to be emitted using additional parenthesis into the TCB, which in
turn prevented proper type narrowing when the method acts as a type
guard. This commit special-cases method calls from property reads to
avoid the additional parenthesis.
Fixes#44353
PR Close#44447
This was flagged during the code review of #44580. When generating a type check block, we were interpreting any call to `$any` as an `as any` cast, even if it's part of a `PropertyRead` (e.g. `foo.$any(1)`). This is handled correctly in other parts of the compiler, but it looks like it was missed in the type checker.
PR Close#44657
This page exists in the most recent angular.io version (v13 currently), so there's no need to link to an old version. The hash also refers to the title section of the page, which isn't necessary and is now dropped.
PR Close#44649
Dev mode output was switched from ES5 -> ES2015 recently and as a part of those changes, some target names that contained `_es5` postfixes were changes to `_es2015` instead. This commit fixes the issue with one of the recently merged BUILD files that contained the old (`_es5`) postfix.
PR Close#44651
When building a library, the `rootDir` option is configured to ensure
that all source files are present within the entry-point that is being
build. This imposes an extra constraint on the reference emit logic,
which does not allow emitting a reference into a source file outside of
this `rootDir`.
During the generation of type-check blocks we used to make a best-effort
estimation of whether a type reference can be emitted into the
type-check file. This check was relaxed in #42492 to support emitting
more syntax forms and type references, but this change did not consider
the `rootDir` constraint that is present in library builds. As such, the
compiler might conclude that a type reference is eligible for emit into
the type-check file, whereas in practice this would cause a failure.
This commit changes the best-effort estimation into a "preflight"
reference emit that is fully accurate as to whether emitting a type
reference is possible.
Fixes#43624
PR Close#44587
The `NgtscCompilerHost` is implemented using the `FileSystem`
abstraction of the compiler, which is implemented for tests using an
in-memory `MockFileSystem`. If the in-memory filesystem contains
symlinks, then using `NgtscCompilerHost` would not reflect their
resolved real path. Instead, the TypeScript compiler would use its
default implementation based on the real filesystem, which is unaware of
the in-memory `MockFileSystem` setup.
This change does not currently address any issues, but is being fixed
as it prevented a reproduction scenario from behaving correctly.
PR Close#44587
In certain scenarios, the compiler may have crashed with an
`Unable to write a reference` error which would be particularly hard
to diagnose. One of the primary reasons for this failure is when the
`rootDir` option is configured---typically the case for libraries---
and a source file is imported using a relative import from an external
entry-point. This would normally report TS6059 for the invalid relative
import, but the crash prevents this error from being surfaced.
This commit refactors the reference emit logic to result in an explicit
`Failure` state with a reason as to why the failure occurred. This state
is then used to report a `FatalDiagnosticException`, preventing a hard
crash.
Closes#44414
PR Close#44587
This commit moves some logic to make the location of runtime error codes consistent across packages. Now all error codes are located in `packages/core/src/errors.ts` file.
PR Close#44398
To make our test output i.e. devmode output more aligned
with what we produce in the NPM packages, or to be more
aligned with what Angular applications will usually consume,
the devmode output is switched from ES5 to ES2015.
Additionally various tsconfigs (outside of Bazel) have been
updated to match with the other parts of the build. The rules
are:
ES2015 for test configurations, ES2020 for actual code that will
end up being shipped (this includes the IDE-only tsconfigs).
PR Close#44505
The Ivy compiler no longer generates code for type-checking purposes
using the output AST types. Instead, it uses TypeScript AST nodes and
its printer for type-checking. This commit removes the type-related
output nodes.
PR Close#44411
The `ng_rollup_bundle` rule has been replaced with a new rule called
`app_bundle`. This rule replicates the Angular v13 optimization
pipeline in the CLI, so that we can get better benchmarking results.
Also the rule is much simpler to maintain as it relies on ESbuild.
The old `ng_rollup_bundle` rule did rely on e.g. build-optimizer that no
longer has an effect on v13 Angular packages, so technically size
tests/symbol tests were no longer as correct as they were before. This
commit fixes that.
A couple of different changes and their explanation:
* Language-service will no longer use the benchmark rule for creating
its NPM bundles! It will use plain `rollup_bundle`. ESBuild would have
been nice but the language-service relies on AMD that ESBuild cannot
generate (yet?)
* Service-worker ngsw-worker.js file was generated using the benchmark
bundle rule. This is wrong. We will use a simple ESbuild rule in the
future. The output is more predictable that way, and we can have a
clear use of the benchmark bundle rule..
* A couple of benchmarks in `modules/` had to be updated to use e.g.
`initTableUtils` calls. This is done because with the new rule, all
files except for the entry-point are considered side-effect free. The
utilities for benchmarks relied on side-effects in some
transitively-loaded file (bad practice anyway IMO). We are now
initializing the utilities using a proper init function that is
exported...
PR Close#44490
Cleans up some of the temporary workarounds that were necessary in order to land support for TypeScript 4.5 since they're no longer necessary.
PR Close#44477
Now that ViewEngine libraries can no longer be created, the latest
TypeScript version that ngcc should be able to process is TypeScript 4.3,
i.e. the version of TypeScript that was supported in Angular 12.
However, ngcc's integration tests used the TypeScript version of the
workspace to create the JavaScript files from TypeScript sources on
demand. This introduces friction when upgrading the TypeScript version
within the workspace, as changes to TypeScript's emit format may affect
ngcc's ability to process it correctly.
The on demand creation of JavaScript files was convenient for authoring
tests, but it also helped to detect incompatibilities with newer
versions of TypeScript. Now that ngcc no longer has to process newer
versions of TypeScript, we want to pin the integration suite to use
JavaScript code as if it were compiled using TypeScript 4.3, i.e. a
version of TypeScript that is actually supported by ngcc.
This commit updates the integration test to inline all the generated
files directly in the tests, instead of compiling them on demand. This
was done by temporarily installing TypeScript 4.3 and using it to create
the `loadTestFiles` statement from the original TypeScript inputs.
An alternative could have been to install TypeScript 4.3 as an actual
dependency in the workspace and using that to continue compiling the
integration suite on demand, but this brings some overhead in package
installations (TypeScript is ~60MB) and the authoring aspect of ngcc
integration test is expected to diminish, now that ngcc's support is no
longer a moving target.
PR Close#44448
As mentioned in the previous commit, integration tests will be declared
in subpackages of `//integration`. For these tests to still rely on the
NPM packages from `HEAD`, we need to update the visibility.
PR Close#44238
Previously, when processing UMD, ngcc assumed that the `exports`
argument of the CommonJS factory call (if present) would be the first
argument of the call. This is generally true for the supported UMD
formats, but can change if ngcc prepends more imports (and thus factory
arguments) while processing the module. This could lead to errors when
trying to collect dependencies of an already processed module.
(This was accidentally broken in #44245 (commit 2bc3522e16).)
This commit fixes it by not making any assumptions about the position of
an `exports` argument in the CommonJS factory call.
Fixes#44380
PR Close#44381
This commit finishes the removal of View Engine from the codebase, deleting
those pieces of @angular/compiler which were only used for VE.
Co-Authored-By: JoostK <joost.koehoorn@gmail.com>
PR Close#44368
This commit does a first-pass removal of the View Engine infrastructure
in compiler-cli. A more in-depth cleanup is necessary and large parts
of the View Engine compiler infrastructure remain within
`@angular/compiler`, this is just a first cleanup step.
PR Close#44269
As a preparation for the removal of the ViewEngine parts in
`compiler-cli`, this commit moves the version number helper functions
up one level such that the whole `diagnostics` subfolder can be removed.
PR Close#44269
Adds support for TypeScript 4.5. Includes the following changes:
* Bumping the package versions.
* Fixing a few calls to `createExportSpecifier` and `createImportSpecifier` that require an extra parameter.
* Adding some missing methods to the TS compiler hosts.
* Fixing an issue in the TS mocks for the ngcc tests where a regex was too agressive and was trying to match a path like `/node_modules/@typescript/lib-es5`.
* Accounting for type-only import specifiers when reporting DI errors (see #43620).
Fixes#43620.
PR Close#44164
The downlevel decorator transform (commonly used in the CLI and other
tooling of the ecosystem for enabling JIT ES2015+), is currently
incorrectly dealing with nested classes.
The transform will accidentally visit nested classes (in a constructor)
multiple times and generate duplicated instances of the `ctorParameters`
fields. This does not sound like an issue at first, but the duplicated
`ctorParameters` fields will miss significant type information that has
been elided by the first visit, resulting in generated code like the
following:
```js
let MyClass = /* @__PURE__ */ __name(class MyClass extends UpgradeNg1ComponentAdapter {
constructor(scope, injector3, elementRef) {
}
}, "MyClass");
MyClass.ctorParameters = () => [
{ type: void 0, decorators: [{ type: Inject, args: [$SCOPE] }] },
{ type: Injector },
{ type: ElementRef }
];
MyClass.ctorParameters = () => [
{ type: void 0 }, // <---- NOTE!
{ type: Injector },
{ type: ElementRef }
];
```
PR Close#44281
Previously, the mock packages created for `UmdDependencyHost`'s tests,
specified the entry-point as `esm2015`. This does not matter in tests,
since the packages are explicitly passed to the `UmdDependencyHost`
(while in reality the appropriate host would be determined based on the
name of the entry-point property - in this case, detecting the
entry-point as ES2015 and not UMD).
However, in order to avoid confusion, this commit updates the test
packages to use `main` (the default property used for the UMD format in
`package.json` files).
PR Close#44245
Previously, the ngcc `UmdReflectionHost` would throw a misleading error
when trying to collect dependencies of an invalidly formatted UMD
module. This happened because an error would be thrown while trying to
construct the error message for the actual error, by calling `getText()`
on certain TypeScript AST nodes. See
https://github.com/angular/angular/issues/44019#issuecomment-959954121
for a more in-depth explanation.
This commit ensures `getText()` can be safely called on TypeScript AST
nodes when collecting dependencies of UMD modules.
PR Close#44245
This commit utilizes the infrastructure added in the previous commit to
run more tests against more of the supported UMD formats. This shall
give us more confidence that all aspects of UMD processing work
correctly with the various formats.
PR Close#44245
Previously, several ngcc test suites used their own helper to generate
test UMD modules.
This commit switches to using the same helper for generating UMD modules
across test suites. This improves DRYness (ensuring changes/fixes to the
UMD format need only be applied once) and makes it easier to test
different UMD formats in all test suites.
PR Close#44245
Previously, ngcc could only handle UMD modules whose wrapper function
was implemented as a `ts.ConditionalExpression` (i.e. using a ternary
operator). This is the format emitted by popular bundlers, such as
Rollup.
This commit adds support for a different format, that uses `if/else`
statements, which is what is [emitted by Webpack][1].
[1]: https://webpack.js.org/configuration/output/#type-umdFixes#44019
PR Close#44245
Previously, ngcc could only handle UMD modules whose wrapper function
was implemented as a `ts.ConditionalExpression` (i.e. using a ternary
operator). This is the format emitted by popular bundlers, such as
Rollup. However, this failed to account for a different format, using
`if/else` statements, such as the one [emitted by Webpack][1].
This commit prepares ngcc for supporting different UMD wrapper function
formats by decoupling the operation of parsing the wrapper function body
to capture the various factory function calls and that of operating on
the factory function calls (for example, to read or update their
arguments). In a subsequent commit, this will be used to add support for
the Webpack format.
[1]: https://webpack.js.org/configuration/output/#type-umd
PR Close#44245
This commit removes special functions that were used to run tests in ViewEngine or Ivy only.
Since ViewEngine is deprecated and we no longer run ViewEngine tests on CI, we can cleanup
those special helpers and ViewEngine-only tests.
PR Close#44120
ngcc used to rewrite `PRE_R3` markers to become `POST_R3` in order to
switch the runtime implementation in `@angular/core` from View Engine to
Ivy. Now that `@angular/core` is published as native Ivy package and the
runtime switch code has been removed, there is no need for ngcc to
perform this transform anymore.
PR Close#43891
Now that the core package has been cleaned up to no longer contain Ivy
switch code, the transform to switch the `PRE_R3` markers to become
`POST_R3` is deleted as well.
PR Close#43891
This commit removes the View Engine runtime. Itself, this change is
relatively straightforward, but it represents the final step in a multi-year
journey. It's only possible due to the hard work of many current and former
team members and collaborators, who are too numerous to list here.
Co-authored-by: Alan Agius <alan.agius4@gmail.com>
Co-authored-by: Andrew Kushnir <akushnir@google.com>
Co-authored-by: Andrew Scott <atscott01@gmail.com>
Co-authored-by: Andrew Seguin <andrewjs@google.com>
Co-authored-by: Cédric Exbrayat <cedric@ninja-squad.com>
Co-authored-by: Charles Lyding <19598772+clydin@users.noreply.github.com>
Co-authored-by: Dave Shevitz <dshevitz@google.com>
Co-authored-by: Doug Parker <dgp1130@users.noreply.github.com>
Co-authored-by: Dylan Hunn <dylhunn@gmail.com>
Co-authored-by: Emma Twersky <emmatwersky@google.com>
Co-authored-by: George Kalpakas <kalpakas.g@gmail.com>
Co-authored-by: Igor Minar <iminar@google.com>
Co-authored-by: Jeremy Elbourn <jelbourn@google.com>
Co-authored-by: Jessica Janiuk <jessicajaniuk@google.com>
Co-authored-by: JiaLiPassion <JiaLi.Passion@gmail.com>
Co-authored-by: Joey Perrott <josephperrott@gmail.com>
Co-authored-by: Joost Koehoorn <joost.koehoorn@gmail.com>
Co-authored-by: Kristiyan Kostadinov <crisbeto@abv.bg>
Co-authored-by: Madleina Scheidegger <mscheid@google.com>
Co-authored-by: Mark Thompson <2554588+MarkTechson@users.noreply.github.com>
Co-authored-by: Minko Gechev <mgechev@gmail.com>
Co-authored-by: Paul Gschwendtner <paulgschwendtner@gmail.com>
Co-authored-by: Pawel Kozlowski <pkozlowski.opensource@gmail.com>
Co-authored-by: Pete Bacon Darwin <pete@bacondarwin.com>
Co-authored-by: Wagner Maciel <wagnermaciel@google.com>
Co-authored-by: Zach Arend <zachzach@google.com>
PR Close#43884
This commit removes most tests that were designated as only covering View
Engine code. It also removes tag filters from CI and local commands to run
tests.
In a few cases (such as with the packages/compiler tests), this tag was
improperly applied, and certain test cases have been added back running in
Ivy mode.
This commit also empties `@angular/compiler/testing` as it is no longer
necessary (this is safe since compiler packages are not public API). It can
be deleted in the future.
PR Close#43884
When executing, ngcc writes a lock-file that is used to coordinate multiple concurrent instances of ngcc.
Previously, this file was written at `node_modules/@angular/compiler-cli/ngcc`, or similar depending upon the bundling of the package.
But this causes problems for setups where `node_modules` package directories are expected to be read-only.
Now, the lock-file is written as `.ngcc_lock_file` into the top of the `node_modules`, which is an acceptable place to store transient files.
This change should help to unblock use of tools like pnpm and lerna, which can use symlinks to readonly package directories.
PR Close#44228
These changes add support for interpreting `String.prototype.concat` calls. We need to support it, because in TypeScript 4.5 string template expressions are transpiled to `concat` calls, rather than string concatenations. See https://github.com/microsoft/TypeScript/pull/45304.
PR Close#44167
When a partially compiled component or directive is "linked" in JIT mode, the body
of its declaration is evaluated by the JavaScript runtime. If a class is referenced
in a query (e.g. `ViewQuery` or `ContentQuery`) but its definition is later in the
file, then the reference must be wrapped in a `forwardRef()` call.
Previously, query predicates were not wrapped correctly in partial declarations
causing the code to crash at runtime. In AOT mode, this code is never evaluated
but instead transformed as part of the build, so this bug did not become apparent
until Angular Material started running JIT mode tests on its distributable output.
This change fixes this problem by noting when queries are wrapped in `forwardRef()`
calls and ensuring that this gets passed through to partial compilation declarations
and then suitably stripped during linking.
See https://github.com/angular/components/pull/23882 and https://github.com/angular/components/issues/23907
PR Close#44113
Currently the TS version checking function interprets a version like `1.2.3-rc.5` as `1.2.NaN` which would allow it to bypass the version checking altogether.
These changes add a little bit more logic to ensure that such versions are handled correctly. There's also an error if we don't manage to parse the version string.
Also it seemed like we never actually ran the version check unit tests, because they didn't have a test target.
PR Close#44109
This commit adds additional information to encourage developers to contact
the author of View Engine libraries and ask them to update to partial Ivy.
Fixes#42308
PR Close#43996
Consider the `NgModel` directive which has the `ngModelOptions` input:
```ts
class NgModel {
@Input() ngModelOptions: { updateOn: 'blur'|'change'|'submit' };
}
```
In a template this may be set using an object literal as follows:
```html
<input ngModel [ngModelOptions]="{updateOn: 'blur'}">
```
This assignment should be accepted, as the object's type aligns with the
`ngModelOptions` input in `NgModel`. However, if the `strictNullInputTypes`
option is disabled this assignment would inadvertently produce an error:
```
Type '{ updateOn: string; }' is not assignable to type '{ updateOn: "blur"|"change"|"submit"; }'.
Types of property 'updateOn' are incompatible.
Type 'string' is not assignable to type '"blur"|"change"|"submit"'
```
This is due to the `'blur'` value being inferred to be of type `string`
instead of retaining its literal type. The non-null assertion operator
that is automatically inserted for input binding assignments when
`strictNullInputTypes` is disabled inhibits TypeScript from inferring
the string value as its literal type.
This commit fixes the issue by omitting the insertion of the non-null
operator for object literals and array literals.
PR Close#38305
When a safe method call such as `person?.getName()` is used, the
compiler would generate invalid code if the argument list also contained
a safe method call. For example, the following code:
```
person?.getName(config?.get('title').enabled)
```
would generate
```
let tmp;
ctx.person == null ? null : ctx.person.getName((tmp = tmp) == null ?
null : tmp.enabled)
```
Notice how the call to `config.get('title')` has completely disappeared,
with `(tmp = tmp)` having taken its place.
The issue occurred due to how the argument list would be converted
from expression AST to output AST twice. First, the outer safe method
call would first convert its arguments list. This resulted in a
temporary being allocated for `config.get('title')`, which was stored in
the internal `_resultMap`. Only after the argument list has been
converted would the outer safe method call realize that it should be
guarded by a safe access of `person`, entering the `convertSafeAccess`
procedure to convert itself. This would convert the argument list once
again, but this time the `_resultMap` would already contain the
temporary `tmp` for `config?.get('title')`. Consequently, the safe
method in the argument list would be emitted as `tmp`.
This commit fixes the issue by ensuring that nodes are only converted
once.
Closes#44069
PR Close#44088
Enables code spitting for ESBuild bundling of the compiler-cli. When
we initially configured ESBuild as part of APF v13, we left this option
disabled as code splitting is marked experimental. The ESM splitting
mechanism in ESBuild seems very solid so far (judging subjectively
and by experience/reports in the ESBuild repo), so we should give
it a shot, in order to significantly reduce the size of the NPM package,
and simplify debugging (by not having duplicated code portions for all
the different entry points).
To clarify: Code splitting is helpful as we have multiple entry-points
that currently duplicate code. With code splitting these entry-points
would share common code instead.
PR Close#43932
Prior refactorings caused unexpected g3 sync issues due to a patch that
changes the error documentation URL. This commit moves the base url into
a separate file to make this more apparent.
PR Close#43527
The `ErrorCode` enum in the `error_code.ts` file is governed by public
api guards but the other top-level exports from that file are exempt
from public api documentation and are therefore marked as `@internal`.
However, TypeScript is configured with the `stripInternal` compiler
option such that declarations with `@internal` markers are not emitted
into the `.d.ts` files, but this means that the reexports in the barrel
file end up referring to missing declarations.
The `stripInternal` option is considered internal and its documentation
states to use at your own risk (as per https://github.com/microsoft/TypeScript/issues/45307).
Having the option enabled is desirable for us as it works well for
hiding class fields that are marked `@internal`, which is an effective
way to hide members from the .d.ts file. As a workaround for the issue
with top-level symbols, the declarations with `@internal` markers are
moved to dedicated files for which no public api guard is setup,
therefore allowing their `@internal` markers to be dropped.
Fixes#43097
PR Close#43527
In #43879, `UmdReflectionHost` was updated to deal with the new UMD
format used by Rollup, where the parenthesis is around the wrapper
function and not the wrapper function call.
For reference, this caused failures in the `ngcc-validation` repo
([example 1][1], [example 2][2]).
This commit updates `UmdRenderingFormatter` to also handle both UMD
formats. In order to validate the change, this commit also updates the
`UmdRenderingFormatter` tests to run against both UMD formats.
[1]: https://circleci.com/gh/angular/ngcc-validation/65916
[2]: https://circleci.com/gh/angular/ngcc-validation/65758
PR Close#43931
This commit re-enables the `perform_watch` test target and updates the
test to run with the Ivy compiler.
Additionally, this target was switched over to use Angular v12 packages
as input to the test, to allow the ViewEngine tests to continue working
with v13 packages which are Ivy-only. This commit reverts those changes
now that View Engine tests are disabled, as it's desirable to test
against local artifacts that are build within the monorepo instead of
depending on NPM packages.
PR Close#43893
The View Engine compiler now throws when constructed and will be removed shortly. Direct users should switch to `NgtscProgram` to build with [Ivy](https://angular.io/guide/ivy). The View Engine compiler is being removed, so this makes it throw an error to ensure no one accidentally depends on code being removed.
PR Close#43862
Using the tag "view-engine-only" better describes the expected usage of bazel targets with the test. They can
only be run with view engine.
PR Close#43862
Since building with ViewEngine is not longer desired on CI, removing the ivy vs non-ivy testing yarn scripts
is done, informing developers to instead use `yarn test` as all tests should be run using the Ivy complier.
PR Close#43862
Recently rollup, used by ng-packagr, changed the position of parentheses
around its generated UMD wrapper functions.
This commit ensures that ngcc can handle both.
Fixes#43870
PR Close#43879
This reverts commit bba0a87055.
The reason for rollback: this change is breaking some targets in Google's codebase when there is no attribute value is displayed (attr.aria-label) when translated.
PR Close#43882
While fully dynamic bound properties (and attributes) cannot be marked for localization, properties that only contain interpolation can.
This commit ensure that attribute bindings that only contain interpolation can also be marked for localization.
Closes#43260
PR Close#43815
When extracting i18n messages from templates, ICU messages are split out from the
message that contains them. This can make it difficult in the translation files to match up
the two messages, especially if the ICU is reused in multiple placeholders.
This commit builds on top of the previous one to expose the message ID of ICU messages
from the ICU placeholders as additional metadata in the `$localize` tagged strings.
Now the metablock following any placeholder can also contain the associated ID
delimited from the placeholder name by `@@`.
Fixes#17506
PR Close#43534
Refs #42966.
Previously, a build when emitted one warning and no errors would fail with a non-zero exit code. This is not what users would expect, but had not been an issue before since the compiler did not actually emit any warnings. With upcoming extended template diagnostics and other warnings, this is now a case that needs to be supported. Warnings are printed to `stderr` as before, but `ngc` now exits with code `0` and the build is considered successful.
Implemented this by adding a new `expectedExitCode` parameter to `driveDiagnostics()` which asserts against the real exit code. Most importantly, it does not **require** the the build to pass since any exit code can be given, so it is up to the test to assert this as well as many messages printed to make sure they are acceptable. This is useful for testing warnings and ensuring the build still passes.
PR Close#43673
This commit updates the `node` engines range for all Angular
framework packages to:
* No longer support NodeJS v12 `< 12.20`. This is done because APF v13
uses package export patterns which are only supported as of v12.20.
https://nodejs.org/api/packages.html#packages_subpath_patterns.
* Allows for the latest v16 NodeJS versions. This matches with the CLI
which added NodeJS v16 support with https://github.com/angular/angular-cli/pull/21854.
We already limit this to `>= v16.10.0` in preparation to only
supporting the LTS minors of Node v16.
BREAKING CHANGE: NodeJS versions older than `v12.20.0` are no longer
supported due to the Angular packages using the NodeJS package exports
feature with subpath patterns.
PR Close#43740
Bumps the minimum required TypeScript version to 4.4.2 and removes the integration tests for 4.1, 4.2 and 4.3.
BREAKING CHANGE:
TypeScript versions older than 4.4.2 are no longer supported.
PR Close#43642
Refs #42966.
Previously, checking a template with the syntax:
```html
<div>{{ foo() ?? 'test' }}</div>
```
Where `foo()` returns a nullable value:
```typescript
@Component(/* ... */)
class TestCmp {
foo: (): string | null => null;
}
```
Would always log a nullish coalescing not nullable warning. This is because [`getSymbolOfNode(node.left)`](fe69193509/packages/compiler-cli/src/ngtsc/typecheck/extended/checks/nullish_coalescing_not_nullable/index.ts (L30)) would return the [symbol of the function (`foo`)](fe69193509/packages/compiler-cli/src/ngtsc/typecheck/src/template_symbol_builder.ts (L536-L538)) rather than the symbol of its returned value (`foo()`). Fixed this by getting the symbol for the whole expression's span, rather than just the function receiver.
Also made some minor refactorings to `template_symbol_builder` to make a similar change to safe method calls. This behavior was originally for the language service in order to handle quick info, as the user highlighting a function name would actually apply to the entire expression. This is no longer true as the language service will correctly request the type from the function rather than the `Call` expression, so these hacks are not necessary anymore. This broke two existing test cases of exactly this behavior which were easily updated. Also added a test to the language service to confirm that it is not broken by this change.
PR Close#43572
`source-map` is only used during testing and therefore there is no need to list it as a dependency.
(cherry picked from commit ae7dc75bdce713acaa1658734791317a274982da)
PR Close#43644
When compiling your application using the AOT compiler, your templates
are type-checked according to a certain strictness level. Before Angular 9
there existed only two strictness levels of template type checking as
determined by [the `fullTemplateTypeCheck` compiler option](guide/angular-compiler-options).
In version 9 the `strictTemplates` family of compiler options has been
introduced as a more fine-grained approach to configuring how strict your
templates are being type-checked.
The `fullTemplateTypeCheck` flag is being deprecated in favor of the new
`strictTemplates` option and its related compiler options. Projects that
currently have `fullTemplateTypeCheck: true` configured can migrate to
the following set of compiler options to achieve the same level of
type-checking.
```json
{
"angularCompilerOptions": {
"strictTemplates": true,
"strictInputTypes": false,
"strictNullInputTypes": false,
"strictAttributeTypes": false,
"strictOutputEventTypes": false,
"strictDomEventTypes": false,
"strictDomLocalRefTypes": false,
"strictSafeNavigationTypes": false,
"strictContextGenerics": false,
}
}
```
PR Close#43224
This commits sets the JS target for all command line tools to
NodeJS v12. ESbuild will automatically downlevel the ES2020 features
we currently use to make them compatible with NodeJS v12 <-> ES2019.
ES2020 is the prodmode output, but we still support Node v12 so
there needs to be some downleveling for now.
Note: This is a separate commit because initially the target was
set to Node v14 to match up with the prodmode Bazel output.
PR Close#43431
Similar to the other private entry-points we have added for localize,
bazel or the migrations, we should expose the tooling code through
a dedicated private export. This will make the compiler-cli exports
more consistent and it will become easier for the CLI to export
necessary code.
PR Close#43431
Currently, some tests in the `compiler-cli/integrationtest` package fail
on Windows because there are spec files which are not Bazel-generated.
When Bazel runs these tests on Windows, the spec file is resolved to
the actual source file (since there is no runfile symlinking/sandboxing).
This breaks the execution of the CJS spec file since it resides in th
`packages/compiler-cli` source folder which has a `package.json` set to
`type: module`.
We fix this by adding a `package.json` file for the integration test
folder and setting `module` to `commonjs`.
PR Close#43431
With the APF v13 package output, deep files can no longer be imported.
Since we do not intend to bundle the compiler into the compiler-cli, we
need to switch all deep imports to the primary entry-point.
PR Close#43431
Updates the dynamic-compiler test to be compatible with the APF v13.
As of v13, the packages no longer come with metadata.json files and
now need to be processed with the babel linker plugin. This commit
sets up the linker plugin, and switches away from the deprecated
systemjs approach to a simpler rollup code-splitting variant.
PR Close#43431
Ngcc relies on cluster for distributing work. The master controller
sends messages to the workers as soon as the worker becomes `online`.
The online event is sent as part of the NodeJS cluster logic itself.
This does not work well because technically `online` could emit before the
worker started listening (this seems to be case now with ESM as the
imports are loaded in a way where `online` emits too early; before the
worker actually listens for messages).
We fix this by explicitly notifying the master when the worker
is ready for retrieving IPC messages/or tasks. This is more safe
anyway as it's not clearly specified when `online` emits.
PR Close#43431
Given that we ship all of compiler-cli and localize in ESM
mode now, we need to use a ESM compatible version of Yargs.
The latest version seems ESM compatible but with some small
API changes. This commit updates Yargs and updates the command
line option code to use the new API.
PR Close#43431
Updates the lock file resolution logic in ngcc to work with ESM output.
The compiler-cli is now shipped in bundles, so the actual module resolution
needs to stay to keep the lock file path consistent regardless of where the
lock file code is bundled into. The ngcc integration test needs to be updated
though since the `ngcc` entry-point will always reside in the `bundles/` directory
now.
It has been considered using the top-level `package.json` of the compiler-cli
package, but that caused problems in tests down the line because the ngcc
tests only have the `@angular/compiler-cli/ngcc/...` targets linked into
the node modules. It's not worth changing this and reworking tests if ngcc
is going away in the future anyway (+ it has been like that before!).
PR Close#43431
Switches the compiler-cli usage of `__filename` to `import.meta.url`
when ESM bundles are generated. Unfortunately we cannot start using
only `import.meta` yet as we still build and run all code in Angular
in CommonJS module output for devmode tests.
This commit also fixes various instances where a jasmine spy was applied on
a namespace export that will break with ES module (and the interop for
CommonJS output). We fix these spies by using a default import.
PR Close#43431
Removes the remaining usages of dynamic require statements in the
package output. Since we declare all shipped packages as strict ESM,
we cannot use dynamic require statements anymore. This commit switches
these usages to actual `import` statements.
Note: Tsickle continues to remain an optional dependency since bundling
does not work with its UMD package output. Also tsickle is rarely used by
consumers, if at all, so bundling does not really provide any significant
value. To continue keeping tsickle optional (since it's still needed by the
`annotateForClosureCompiler` option which is also respected in ngtsc), we
pass-through a tsickle instance as a parameter to `main`. This allows us to
keep the compile functions synchronous without having to refactor the majority
of the watch compilation code, and majority of tests for ngc, ngtsc.
Consumers (like the `ngc` bin entry-point) can then load tsickle based on their
module format. e.g. tsickle can be imported through `require` to keep everything
sync, but in ESM, the dynamic import can be used beforehand to pass `tsickle` to
the `main` function. We can revisit this in the future but for now this does the
trick without exceeding the scope of this commit..
PR Close#43431
As outlined in the previous commit which enabled the `esModuleInterop`
TypeScript compiler option, we need to update all namespace imports
for `typescript` to default imports. This is needed to allow for
TypeScript to be imported at runtime from an ES module.
Similar changes are needed for modules like `semver` where the types incorrectly
suggest named exports that will not exist at runtime when imported from ESM.
This commit refactors all imports to match with the lint rule we have
configured in the previous commit. See the previous commit for more
details on why certain imports have been changed.
A special case are the imports to `@babel/core` and `@babel/types`. For
these a special interop is needed as both default imports, or named
imports break the other module format. e.g default imports would work
well for ESM, but it breaks for CJS. For CJS, the named imports would
only work, but in ESM, only the default export exist. We work around
this for now until the devmode is using ESM as well (which would be
consistent with prodmode and gives us more valuable test results). More
details on the interop can be found in the `babel_core.ts` files (two
interops are needed for both localize/or the compiler-cli).
PR Close#43431
This wires up the `@angular/localize/tools` entry-point. For context:
This entry-point is being created to avoid deep imports into
`@angular/localize/src/tools/<..>` like the CLI relies on. Deep imports
do not play well with strict ESM, and now that all APF packages are
strict ESM, the tool code needs to be either strict ESM as well.
We use ESBuild to create individual bundles for the CLI entry-points,
and the actual tool entry-point. We use a bundler because this enables
the localize code be ESM compatible. Without a bundler, all relative imports
within the `tools` entry-point would need to explicitly have the `.js`
extension. This would be cumbersome and hard to maintain/enforce or
validate.
One might wonder why this is not a standard APF entry-point then. The
answer is that the APF entry-points do not support exposing the CLI
binaries (like `yarn localize-translate`). This could be done through
tertiary entry-points, but using ESBuild directly gives us more control
for now. We might want to revisit this in the future again.
PR Close#43431
We switched the build output for the compiler-cli to use esbuild-generated
bundles.
This means that actual devmode ES5 sources, or prodmode ES2020 non-bundled
sources are not actually needed. Only the types are needed, and this commit
makes sure only the type definitions are shipped. This reduces the code size
of the compiler-cli and also helps with avoiding incorrect module resolution.
PR Close#43431
The view engine language-service tests currently rely on the `npm_package` output
that is built locally. They rely on the package output mostly for
compiling test scenarios (with dependencies on e.g. forms), and for
the testing the metadata extraction (testing proper suggestions for VE).
The reliance on these packages becomes problematic with the new Angular
Package Format v13 where no metadata files are shipped. To continue
being able to test View Engine language-service compatibility, we will
use the v12.x framework packages for some of the test scenarios.
PR Close#43431
The View Engine ngc tests currently rely on the `npm_package` output
that is built locally. This becomes problematic with the new Angular
Package Format v13 where no metadata files are shipped. To continue
being able to test View Engine compilation, we will use the v12.x
framework packages for running the View Engine test.
Note: This means that we no longer test metadata extraction directly
for our framework packages, but given that any change to View Engine
will still land in patch, where the VE packaging still occurs, we should
be covered here.
PR Close#43431
ngcc currently dynamially loads the `Transformer` code. It does this
to avoid unnecessary parsing and loading of transformer-related code
if there is nothing to process (so-called noop case). Unfortunately
this dynamic require is not recognized by ESBuild. The import needs
to be discovered as otheriwse the transformer code would not be included
in the bundled package output of the CLI.
The ngcc code needs to use an async runtime import as it would work
in ES modules. This introduces async code into to the compililation
pipeline, breaking the `ngccMain` synchronous invocation feature.
To avoid this, we just move the dynamic require/async import to
the file top-level so that we do not break synchronous processing
which the CLI relies on. This has the downside of slowing-down
the noop case a little but I believe that should be mitigated
through bundling of ngcc anyway. In the future with full-ESM
we won't be able to get around this anyway (unless we remove the
sync variant of ngcc processing).
PR Close#43431
Exposes code needed by the Angular CLI. Previously the CLI used
deep imports for most of these things, but now with bundling
the CLI, we no longer support deep imports.
We will expose the necessary dependencies for the linker as part
of the primary entry-point (I think that is more maintable than
re-exporting them as part of the linker). We also expose the ngcc
entry-point for the CLI with a new constant that will point to the
ngcc command line entry-point (which the CLI relies on).
PR Close#43431
The Angular Core and localize package currently use deep imports for
code that is shipped. This is problematic as we want to ship the
compiler-cli as full-ESM. To achieve this we need to use a bundler and
this breaks deep imports.
We use a bundler for the compiler CLI because for full ESM
compatibility, we would need to explicitly add the `.js` extension
to all relative imports. This is very cumbersome and prone to mistakes
so to mitigate this problem in a safe way, we bundle the compiler-cli.
Note: Deep imports continue to exist for the language service as it
bundles the compiler-cli.
PR Close#43431
As part of APF v13, we ship Angular framework packages using partial
compilation. This is done in preparation of VE removal, and to
eventually get rid of `ngcc` processing.
The new library format allows libraries to switch away from the View
Engine package format without shipping Angular definitions with
instructions to NPM. This would make libraries tightly coupled to
specific versions of `@angular/core`.
Since Angular core is always compatible with itself, we always should
compile Angular core using full compilation mode. It is unreasonable
to ship Angular core with partial compilation output, especially since
we would need to export the linker `declare` functions in
`r3_symbols.ts` otherwise.
PR Close#43431
All other frameworks packages are now using APF v13 and are strict
ESM packages. The compiler-cli does not use APF and is currently shipped
with its devmode ES5 CommonJS sources. This is problematic as CommonJS
cannot simply import from ECMAScript modules (like `@angular/compiler`).
To fix this we use a bundler that allows us to ship the compiler-cli as
a strict ESM package. Note: An ESM can import from an ESM without any
problems. This is what we need hre.
Unfortunatley we need a bundler here because converting the compiler-cli
to ESM is non-trivial as relative imports would need an explicit
`.js` extension. This work can be simplified by using a bundler that
avoids relative imports completely.
Note: This commit uses code-splitting to create multiple bundle
entry-points for `yarn ngc, `yarn ngcc` etc. This commit removed
the old `ivy-ngcc` entry-point that just printed an error message
(to reduce amount of bundles having to be configured).
PR Close#43431
With the changes to support APF v13 in the `ng_package` rule, we have
removed the ambiguous `entry_point` attribute. The attribute suggested
that it would be used for determining the primary entry-point input
file. This was not the case as the flat module output file is consulted
for bundling et at. The attribute has been renamed to match its
purposed (renamed to `primary_bundle_name`).
We no longer need to set that attribute because the primary bundle
name is (1) not of relevance for consumers and (2) the rule already
infers the bundle name properly from the Bazel package.
PR Close#43431
Updates the primary tsconfig files to use ES2020 as target and module.
This helps IDEs and reflects what we generate in production, allowing
the use of JS features that are natively supported in APF v13.
PR Close#43431
Now that `Route.loadChildren` no longer accepts a string, there is no
need for tooling to find all string-based `loadChildren` to setup lazy
imports for them. As a result, the `listLazyRoutes` operation that
enumerates all string-based `loadChildren` occurrences is no longer
needed and is therefore removed from the compiler.
The `listLazyRoutes` API remains on the `Program` interface to avoid
breaking external tools that may be using this method, but those tools
should ultimately move away from using this API.
PR Close#43591
This commit removes the ability to configure lazy routes using a string
for `loadChildren`, together with the supporting classes to load an
`NgModuleFactory` at runtime.
BREAKING CHANGE:
It is no longer possible to use `Route.loadChildren` using a string
value. The following supporting classes were removed from
`@angular/core`:
- `NgModuleFactoryLoader`
- `SystemJsNgModuleFactoryLoader`
The `@angular/router` package no longer exports these symbols:
- `SpyNgModuleFactoryLoader`
- `DeprecatedLoadChildren`
The signature of the `setupTestingRouter` function from
`@angular/core/testing` has been changed to drop its `NgModuleFactoryLoader`
parameter, as an argument for that parameter can no longer be created.
PR Close#43591
When specifying the `deps` array in the `@Injectable` decorator to
inject dependencies into the injectable's factory function, it should
be possible to use an array literal to configure how the dependency
should be resolved by the DI system.
For example, the following example is allowed:
```ts
@Injectable({
providedIn: 'root',
useFactory: a => new AppService(a),
deps: [[new Optional(), 'a']],
})
export class AppService {
constructor(a) {}
}
```
Here, the `'a'` string token should be injected as optional. However,
the AOT compiler incorrectly used the array literal itself as injection
token, resulting in a failure at runtime. Only if the token were to be
provided using `[new Optional(), new Inject('a')]` would it work
correctly.
This commit fixes the issue by using the last non-decorator in the
array literal as the token value, instead of the array literal itself.
Note that this is a loose interpretation of array literals: if a token
is omitted from the array literal then the array literal itself is used
as token, but any decorator such as `new Optional()` would still have
been applied. When there's multiple tokens in the list then only the
last one will be used as actual token, any prior tokens are silently
ignored. This behavior mirrors the JIT interpretation so is kept as is
for now, but may benefit from some stricter checking and better error
reporting in the future.
Fixes#42987
PR Close#43226
Prior to this commit ngcc stored its package configuration in JavaScript
objects, which caused the builtin `Object` members to be found as
package configuration. This would subsequently crash as their shape was
not as expected.
This commit moves away from using raw JavaScript objects in favor of a
Map. To code was refactored such that `PartiallyProcessedConfig` is
now a class.
Fixes#43570
PR Close#43589
Native DOM events were previously not included in the completions
because the dom schema registry would filter out events completely. This
change updates the registry to include events in the private
element->property map and excludes events from lookups outside of the
new `allKnownEventsOfElement` function.
fixes https://github.com/angular/vscode-ng-language-service/issues/1479
PR Close#43299
Adds support for TypeScript 4.4. High-level overview of the changes made in this PR:
* Bumps the various packages to `typescript@4.4.2` and `tslib@2.3.0`.
* The `useUnknownInCatchVariables` compiler option has been disabled so that we don't have to cast error objects explicitly everywhere.
* TS now passes in a third argument to the `__spreadArray` call inside child class constructors. I had to update a couple of places in the runtime and ngcc to be able to pick up the calls correctly.
* TS now generates code like `(0, foo)(arg1, arg2)` for imported function calls. I had to update a few of our tests to account for it. See https://github.com/microsoft/TypeScript/pull/44624.
* Our `ngtsc` test setup calls the private `matchFiles` function from TS. I had to update our usage, because a new parameter was added.
* There was one place where we were setting the readonly `hasTrailingComma` property. I updated the usage to pass in the value when constructing the object instead.
* Some browser types were updated which meant that I had to resolve some trivial type errors.
* The downlevel decorators tranform was running into an issue where the Closure synthetic comments were being emitted twice. I've worked around it by recreating the class declaration node instead of cloning it.
PR Close#43281
Adds a test to the nullish coalescing diagnostic check to serve as
self-documentation on how it works with nullish coalescing on pipes that
are often misconfigured.
This also removes that non null assertion operator, which is incorrect
because there _are_ situations where a symbol cannot be retrieved.
PR Close#43419
Currently the compiler has three different classes to represent a "call to something":
1. `MethodCall` - `foo.bar()`
2. `SafeMethodCall` - `foo?.bar()`.
3. `FunctionCall` - Any calls that don't fit into the first two classes. E.g. `foo.bar()()`.
There are a few problems with this approach:
1. It is inconistent with the TypeScript AST which only has one node: `CallExpression`.
2. It means that we have to maintain more code, because the various parts of the compiler need to know about three node types.
3. It doesn't allow us to easily implement some new JS features like safe calls (e.g. `foo.bar?.())`).
These changes rework the compiler so that it produces only one node: `Call`. The new node behaves similarly to the TypeScript `CallExpression` whose `receiver` can be any expression.
There was a similar situation in the output AST where we had an `InvokeMethodExpression` and `InvokeFunctionExpression`. I've combined both of them into `InvokeFunctionExpression`.
PR Close#42882
The template type-checker has to emit type constructors for the
directives that are used in a template, where a type constructor's
declaration has to mirror the type parameter constraints as they were
originally declared. Therefore, the compiler analyzes whether a type
parameter constraint can be recreated, e.g. by generating imports for
any type references. Some type references cannot be recreated, in which
case the compiler has to fall back to a strategy where the type
constructor is created inline in the original source file (which comes
with a performance penalty).
There used to be an issue for type references to namespaced declarations.
The compiler is unable to emit such references such that an inline
type constructor should be used as fallback, but this did not happen.
This caused the attempt to emit the type reference to fail, as the
namespaced declaration cannot be located by the reference emitters.
This commit fixes the issue by using a stricter check to determine if a
type parameter requires an inline type constructor. The TypeScript
reflection host's `isStaticallyExported` logic was expanded to work for
any declaration instead of just classes, as e.g. type declarations can
also be referenced in a type parameter constraint.
Closes#43383
PR Close#43511
Previously, the way templates were tokenized meant that we lost information
about the location of interpolations if the template contained encoded HTML
entities. This meant that the mapping back to the source interpolated strings
could be offset incorrectly.
Also, the source-span assigned to an i18n message did not include leading
whitespace. This confused the output source-mappings so that the first text
nodes of the message stopped at the first non-whitespace character.
This commit makes use of the previous refactorings, where more fine grain
information was provided in text tokens, to enable the parser to identify
the location of the interpolations in the original source more accurately.
Fixes#41034
PR Close#43132
The lexer now splits encoded entity tokens out from text and attribute value tokens.
Previously encoded entities would be decoded and the decoded value would be
included as part of the text token of the surrounding text. Now the entities
have their own tokens. There are two scenarios: text and attribute values.
Previously the contents of `<div>Hello & goodbye</div>` would be a single
TEXT token. Now it will be three tokens:
```
TEXT: "Hello "
ENCODED_ENTITY: "&", "&"
TEXT: " goodbye"
```
Previously the attribute value in `<div title="Hello & goodbye">` would be
a single text token. Now it will be three tokens:
```
ATTR_VALUE_TEXT: "Hello "
ENCODED_ENTITY: "&", "&"
ATTR_VALUE_TEXT: " goodbye"
```
- ENCODED_ENTITY tokens have two parts: "decoded" and "encoded".
- ENCODED_ENTITY tokens are always preceded and followed by either TEXT tokens
or ATTR_VALUE_TEXT tokens, depending upon the context, even if they represent
an empty string.
The HTML parser has been modified to recombine these tokens to allow this
refactoring to have limited effect in this commit. Further refactorings
to use these new tokens will follow in subsequent commits.
PR Close#43132
Add an abstract class that has a default implementation of the run
function and visits all nodes. Authors of template checks can extend
this class and override the `visitNode` method to return diagnostics.
Refs #42966
PR Close#43232
In anticipation of the removal of the View Engine npm package output,
the integration tests of ngcc are switched to use @angular packages for
from npm. The version 12 packages are guaranteed to always be View
Engine format which makes them suitable to be processed in the ngcc
integration tests.
PR Close#43234
Previously, the decorator transformer was annotating the synthesized properties with TS type annotations. However, because it ran after the JSDoc transformer, the TS types were just dropped from the emitted JS. Attempting to move the decorator transformer before the JSDoc transformer causes tsickle crashes because synthetic AST fragments are not attached to a SourceFile node.
PR Close#43021
Add the call to get the extended template diagnostics in
the compiler's `getDiagnosticsForComponent`. This makes showing
extended diagnostics in non-ts files posible.
Refs #42966
PR Close#43134
Rename `getExtendedTemplateDiagnosticsForComponent` to
`getDiagnosticsForComponent` since it's implied they are extended
diagnostics.
Refs #42966
PR Close#43134
Return `TemplateDiagnostic` instead of `ts.Diagnostic` when getting the
extended template diagnostics. This makes the integration with the
language service easier. This also fixes the error code and now uses the
`ngErrorCode` for extended template diagnostics.
Refs #42966
PR Close#43134
This commit adds extended template diagnostics end-to-end tests, to make
sure the diagnostics are generated correctly. Template checks are
already tested with unit tests.
Refs #42966
PR Close#43107
This commit integrates extended template checks with the compiler, by
adding another phase of diagnostics generation. This integration is
under the `_extendedTemplateDiagnostics` flag.
Refs #42966
PR Close#43107
This commit exports the implementation of `ExtendedTemplateChecker` to
generate extended template diagnostics and all the template checks.
Refs #42966
PR Close#43107
Change the current way to run template checks to the
`ExtendedTemplateChecker` instead of just the
`getExtendedTemplateDiagnosticsForComponent` function. Refactored the
tests that used the previous function to use the new class.
Refs #42966
PR Close#43107
Previously with View Engine output, the `enableResourceInlining` option
could be set to inline external templates and styles (also for the
resulting `.metadata.json` files). We want to do the same for the Ivy
compilation pipeline (regardless of the compilation mode). The full
compilation definitions, and partial declarations currently already
inline resources in a way that no external requests need to be made.
Although there is one exception currently. These are the calls for
setting class metadata (for testbed overrides). This commit updates
the set class metadata calls (for both partial and full compilation)
to always inline resources. This means that libraries do not need
to start shipping external styles/templates just for the
`setClassMetadata` calls.
Note: Only doing this for partial compilation has been considered, but
it seems like it would be simpler implementation-wise to do this for
full compilation as well. Given the external resources are already
inlined (through their `ecmp` definitions), it seems acceptable (or
even more aligned) to do the same for the set class metadata calls.
PR Close#43178
The compliance tests can check source-map segments against expectations
encoded into the expectation files. Previously, the encoding of the expected
segment was only delimited by whitespace, but this made it difficult to identify
segments that started or ended with whitespace.
Now these segment expectations are wrapped in double-quotes which makes
it easier to read and understand the expectation files.
PR Close#43129
Add the implementation of a Template Check that ensures the correct
use of two-way binding syntax. Generates a warning when
'([foo])="bar"' is found instead of '[(foo)]="bar"'.
Refs #42966
PR Close#42984
Export `getSourceCodeForDiagnostic` from `ngtsc/testing` to make it
available for other packages. This will help confirm that the source
code is correct in other tests.
Refs #42966
PR Close#42984
This commit moves the test utils used in the typechecking tests into its
own package. This makes them available to be used in the tests of a
different package.
Refs #42966
PR Close#42984
specific
This commit makes the wrapper function `makeTemplateDiagnostic` take an
ErrorCode as a type for the `ts.Diagnostic`s to be generated.
Refs #42966
PR Close#42984
This commit introduces //packages/compiler-cli/src/ngtsc/typecheck/extended
as a container for a new phase of diagnostics generation. The API provides an
interface for new template checks to implement and generate template diagnostics.
Refs #42966
PR Close#42984
When the user tries to trigger suggestions from an interruption,
the LS should provide the global completions. For example,
`[input]="t¦"`, the `t` can be the `true` or the symbol from
the component context.
PR Close#42923
Previously, the way templates were tokenized meant that we lost information
about the location of interpolations if the template contained encoded HTML
entities. This meant that the mapping back to the source interpolated strings
could be offset incorrectly.
Also, the source-span assigned to an i18n message did not include leading
whitespace. This confused the output source-mappings so that the first text
nodes of the message stopped at the first non-whitespace character.
This commit makes use of the previous refactorings, where more fine grain
information was provided in text tokens, to enable the parser to identify
the location of the interpolations in the original source more accurately.
Fixes#41034
PR Close#42062
The compliance tests can check source-map segments against expectations
encoded into the expectation files. Previously, the encoding of the expected
segment was only delimited by whitespace, but this made it difficult to identify
segments that started or ended with whitespace.
Now these segment expectations are wrapped in double-quotes which makes
it easier to read and understand the expectation files.
PR Close#42062
Add a `makeTemplateDiagnostic` wrapper in the `TemplateTypeChecker`. This requiers less parameters to create template diagnostics, since the `TemplateTypeChecker` can get the templateId and mapping from it's scope with the `ts.ClassDeclartion`. The `TemplateTypeChecker` is often used to determine if a diagnostic should be produced, so it makes sense to have a function in it that helps create them.
Refs #42966
PR Close#42937
The compiler keeps track of how a declaration has been referenced
using absolute module imports and from which path the absolute module
should be resolved from. There was a bug in how the .d.ts metadata
extraction would incorrectly use the .d.ts file itself as resolution
context for symbols that had been imported using a relative module
specifier. This could result in module resolution failures.
For example, when extracting NgModule metadata from
`/node_modules/lib/index.d.ts` that looks like
```
import {LibDirective} from './dir';
@NgModule({
declarations: [LibDirective],
exports: [LibDirective],
})
export class LibModule {}
```
and `/app.module.ts` that contains
```
import {LibModule} from 'lib';
@NgModule({
imports: [LibModule],
})
export class AppModule {}
```
then `AppModule` would have recorded a reference to `LibModule` using
the `'lib'` module specifier. When extracting the NgModule metadata from
the `/node_modules/lib/index.d.ts` file the relative import into `./dir`
should also be assumed to be importable from `'lib'` (according to APF
where symbols need to be exported from a single entry-point)
so the reference to `LibDirective` should have `'lib'` as absolute
module specifier, but it would incorrectly have
`/node_modules/lib/index.d.ts` as resolution context path. The latter is
incorrect as `'lib'` needs to be resolved from `/app.module.ts` and not
from within the library itself.
Fixes#42810
PR Close#42879
In an incremental rebuild, the compiler attempts to reuse as much
analysis data from a prior compilation as possible to avoid doing the
analysis work again. For source files without Angular behavior however,
no analysis data would be recorded such that the source file had to be
reanalyzed each rebuild, even if it has not changed.
This commit avoids the analysis of such source files by registering
these files as not containing any Angular behavior; allowing subsequent
rebuilds to avoid the analysis work.
PR Close#42562
The static interpreter assumed that a foreign function expression would
have to be imported from the absolute module specifier that was used for
the foreign function itself. This assumption does not hold for the
`forwardRef` foreign function resolver, as that extracts the resolved
expression from the function's argument, which is not behind the
absolute module import of the `forwardRef` function.
The prior behavior has worked for the typical usage of `forwardRef`,
when it is contained within the same source file as where the static
evaluation started. In that case, the resulting reference would
incorrectly have an absolute module guess of `@angular/core`, but the
local identifier emit strategy was capable of emitting the reference
without generating an import using the absolute module guess.
In the scenario where the static interpreter would first have to follow
a reference to a different source that contained the `forwardRef` would
the compilation fail. In that case, there is no local identifier
available such that the absolute module emitter would try to locate the
imported symbol from `@angular/core`. which fails as the symbol is not
exported from there.
This commit fixes the issue by checking whether a foreign expression
occurs in the same source file as the call expression. If it does, then
the absolute module specifier that was used to resolve the call
expression is ignored.
Fixes#42865
PR Close#42887
For the compilation of a component, the compiler verifies that the
imports it needs to generate to reference the used directives and pipes
would not create an import cycle in the program. This requires visiting
the transitive import graphs of all directive/pipe usage in search of
the component file. The observation can be made that all directive/pipe
usages can leverage the exploration work in search of the component
file, thereby allowing sub-graphs of the import graph to be only visited
once instead of repeatedly per usage. Additionally, the transitive
imports of a file are no longer collected into a set to reduce memory
pressure.
PR Close#41271
In #41995 the type of `TrackByFunction` was changed such that the
declaration of a `trackBy` function did not cause the item type to be
widened to the `trackBy`'s item type, which may be a supertype of the
iterated type. This has introduced situations where the template type
checker is now reporting errors for cases where a `trackBy` function is
no longer assignable to `TrackByFunction`.
This commit fixes the error by also including the item type `T` in
addition to the constrained type parameter `U`, allowing TypeScript to
infer an appropriate `T`.
Fixes#42609
PR Close#42692
In combination with the TS `noImplicitOverride` compatibility changes,
we also want to follow the best-practice of adding `override` to
members which are implemented as part of abstract classes. This
commit fixes all instances which will be flagged as part of the
custom `no-implicit-override-abstract` TSLint rule.
PR Close#42512
Currently unless a listener inside of an embedded view tries to reference something from the parent view, or if the reference is a local ref, we don't generate the view restoration instructions and we allow for the value to be picked up from the context object in the function parameters. The problem is that the listener is only run during creation mode and the context object may have been swapped out afterwards.
These changes fix the issue by always generating the view restoration instructions for listeners inside templates.
Fixes#42698.
PR Close#42755
In #42492 the template type checker became capable of replicating a
wider range of generic type parameters for use in template type-check
files. Any literal types within a type parameter would however emit
invalid code, as TypeScript was emitting the literals using the text as
extracted from the template type-check file instead of the original
source file where the type node was taken from.
This commit works around the issue by cloning any literal types and
marking them as synthetic, signalling to TypeScript that the literal
text has to be extracted from the node itself instead from the source
file.
This commit also excludes `import()` type nodes from being supported,
as their module specifier may potentially need to be rewritten.
Fixes#42667
PR Close#42761
Updates the Bazel NodeJS rules to v4.0.0-beta.0. This is necessary
so that the Angular components repo can update, and it's generally
good to stay as up-to-date as possible with the Bazel rules as it's
easy to fall behind, and updating early allows us to discover issues
affecting our tooling earlier (where they are easier to address due to
e.g. potential breaking change policy).
PR Close#42760
Source files that contain directives or components that need an inline
type constructor or inline template type-check block would always be
considered as affected in incremental rebuilds. The inline operations
cause the source file to be updated in the TypeScript program that is
created for template type-checking, which becomes the reuse program
in a subsequent incremental rebuild.
In an incremental rebuild, the source files from the new user program
are compared to those from the reuse program. The updated source files
are not the same as the original source file from the user program, so
the incremental engine would mark the file which needed inline
operations as affected. This prevents incremental reuse for these files,
causing sub-optimal rebuild performance.
This commit attaches the original source file for source files that have
been updated with inline operations, such that the incremental engine
is able to compare source files using the original source file.
Fixes#42543
PR Close#42759
DTS bundling, will cause originally namespaced imports become namespace declarations within the same file. Example:
Before bundling
```ts
import * as i1 from './router';
export declare class RouterModule {
constructor(guard: any, router: Router);
static ɵmod: i0.ɵɵNgModuleDeclaration<RouterModule, [typeof i1.RouterOutlet...]>;
}
```
After bundling
```
declare namespace i1 {
export {
RouterOutletContract,
RouterOutlet
}
}
export declare class RouterModule {
constructor(guard: any, router: Router);
static ɵmod: i0.ɵɵNgModuleDeclaration<RouterModule, [typeof i1.RouterOutlet...]>;
}
```
And therefore this commit adds support for reflecting types that are defined in such namespace declarations.
Closes#42064
PR Close#42728
When the template type checker try to get a symbol of a template node, it will
not return the directives intended for an element on a microsyntax template,
for example, `<div *ngFor="let user of users;" dir>`, the `dir` will be skipped,
but it's needed in language service.
Fixes https://github.com/angular/vscode-ng-language-service/issues/1420
PR Close#42640
As of ES2021, JavaScript allows using underscores as separators inside numbers, in order to make them more readable (e.g. `1_000_000` vs `1000000`). TypeScript has had support for separators for a while so these changes expand the template parser to handle them as well.
PR Close#42672
The previous default algorithm was `md5`, which is not compliant with FIPS.
The default is now set to `sha256`, which is compliant.
Fixes#42577
PR Close#42582
The hash algorithm for the entry-point manifest was hardcoded to `md5`.
This can now be configured by the `hashAlgorithm` property on the
ngcc.config.js project configuration.
PR Close#42582
The ngcc configuration gets hashed to be used when caching
but it was hardcoded to use the `md5` algorithm, which is
not FIPS compliant.
Now the hash algorithm can be configured in the ngcc.config.js
file at the project level.
PR Close#42582
Adds support for shorthand property declarations inside Angular templates. E.g. doing `{foo, bar}` instead of `{foo: foo, bar: bar}`.
Fixes#10277.
PR Close#42421
Previously, the template type checker would only opt-in to inline type
constructors if it could import all type references from absolute module
specifiers. This limitation was put into place in an abundance of
caution as there was a safe, but less performant, fallback available.
The language service is not capable of using this fallback, which now
means that the limitation of absolute module specifiers limits the
language service's ability to use accurate types for component/directive
classes that have generic type parameters.
This commit loosens the restriction such that type references are now
eligible for emit as long as they are exported.
PR Close#42492
When a component/directive has a generic type parameter, the template
type checker attempts to translate the type parameter such that the
type parameters can be replicated in the type constructor that is
emitted into the typecheck file.
Type parameters with a default clause would incorrectly be emitted into
the typecheck file using the original `ts.TypeNode` for the default
clause, such that `ts.TypeReferenceNode`s within the default clause
would likely be invalid (i.e. referencing a type for which no import is
present in the typecheck file). This did not result in user-facing
type-check errors as errors reported in type constructors are not
translated into template positions Regardless, this commit ensures that
`ts.TypeReferenceNode`s within defaults are properly translated into the
typecheck file.
PR Close#42492
The template type checker is capable of recreating generic type bounds
in a different context, rewriting type references along the way (if
possible). This was previously done using a visitor that only supported
a limited set of types, resulting in the inability to emit all sorts of
types (even if they don't contain type references at all).
The inability to emit generic type bounds was not critical when the type
parameter emitting logic was introduced, as the compiler also has a
fallback strategy of creating inline type constructors. However, this
fallback is not available to the language service, resulting in
inaccurate types when components/directives use a complex generic type.
To mitigate this problem, the specialized visitor has been replaced with
a generalized TypeScript transform, where only type references get
special treatment. This allows for more complex types to be emitted,
such as union and intersection types, object literal types and tuple
types.
PR Close#42492
If an implcit receiver is accessed in a listener inside of an `ng-template`, we generate some extra code in order to ensure that we're assigning to the correct object. The problem is that the logic wasn't covering keyed writes which caused it to write to the wrong object and throw an assertion error at runtime.
These changes expand the logic to cover keyed writes.
Fixes#41267.
PR Close#42603
xi18n is the operation of extracting i18n messages from templates in the
compilation. Previously, only View Engine was able to perform xi18n. This
commit implements xi18n in the Ivy compiler, and a copy of the View Engine
test for Ivy verifies that the results are identical.
PR Close#42485
This commit moves some xi18n-related functions in the View Engine
ng.Program into a new file. This is necessary in order to depend on them
from the Ivy ng.Program while avoiding a cycle.
PR Close#42485
In watch builds, the compiler attempts to reuse as much information from
a prior compilation as possible. To accomplish this, it keeps a
reference to the most recently succeeded `TraitCompiler`, which contains
all analysis data for the program. However, `TraitCompiler` has an
internal reference to an `IncrementalBuild`, which is itself built on
top of its prior state. Consequently, all prior compilations continued
to be referenced, preventing garbage collection from cleaning up these
instances.
This commit changes the `AnalyzedIncrementalState` to no longer retain
a `TraitCompiler` instance, but only the analysis data it contains. This
breaks the retainer path to the prior incremental state, allowing it to
be garbage collected.
PR Close#42537
This is based on a discussion we had a few weeks ago. Currently if a component uses `ViewEncapsulation.ShadowDom` and its selector doesn't meet the requirements for a custom element tag name, a vague error will be thrown at runtime saying something like "Element does not support attachShadowRoot".
These changes add a new diagnostic to the compiler that validates the component selector and gives a better error message during compilation.
PR Close#42245
For quite a while it is an unspoken convention to add a trailing
new-line files within the Angular repository. This was never enforced
automatically, but has been frequently raised in pull requests through
manual review. This commit sets up a lint rule so that this is
"officially" enforced and doesn't require manual review.
PR Close#42478
Updates the compiler-cli compliance goldens. The golden updates are
required due to a regression in TypeScript 4.3 that causes the emitter
to not incorrectly preserve lines when emitting a node list.
This can be reverted once https://github.com/microsoft/TypeScript/pull/44070
is available.
PR Close#42022
Switches the repository to TypeScript 4.3 and the latest
version of tslib. This involves updating the peer dependency
ranges on `typescript` for the compiler CLI and for the Bazel
package. Tests for new TypeScript features have been added to
ensure compatibility with Angular's ngtsc compiler.
PR Close#42022
Currently we support safe property (`a?.b`) and method (`a?.b()`) accesses, but we don't handle safe keyed reads (`a?.[0]`) which is inconsistent. These changes expand the compiler in order to support safe key read expressions as well.
PR Close#41911
With the removal of the `ModuleWithProviders` transform in the parent commit,
the underlying dts transform can also be removed as it is not used elsewhere.
PR Close#41996
The `ModuleWithProviders` type has required a generic type since Angular 10,
so it is no longer necessary for the compiler to transform usages of the
`ModuleWithProviders` type without the generic type, as that should have
been reported as a compile error. This commit removes the detection logic
from ngtsc.
PR Close#41996
When a `trackBy` function is used that accepts a supertype of the iterated
array's type, the loop variable would undesirably be inferred as the supertype
instead of the array's item type. This commit adds an inferred type parameter
to `TrackByFunction` to allow an extra degree of freedom, enabling the
loop value to be inferred as the most narrow type.
Fixes#40125
PR Close#41995
The ngtsc test targets have fake declarations files for `@angular/core`
and `@angular/common` and the template type checking tests can leverage
the fake common declarations instead of declaring its own types.
PR Close#41995
Type-only imports are known to be elided by TypeScript, so the compiler
can be certain that such imports do not contribute to potential import
cycles. As such, type-only imports are no longer considered during cycle
analysis.
Regular import statements that would eventually be fully elided by
TypeScript during emit if none of the imported symbols are used in a
value position continue to be included in the cycle analysis, as the
cycle analyzer is unaware of these elision opportunities. Only explicit
`import type` statements are excluded.
PR Close#42453
The compiler flag `compileNonExportedClasses` allows the Angular compiler to
process classes which are not exported at the top level of a source file.
This is often used to allow for AOT compilation of test classes inside
`it()` test blocks, for example.
Previously, the compiler would identify exported classes by looking for an
`export` modifier on the class declaration itself. This works for the
trivial case, but fails for indirectly exported classes:
```typescript
// Component is declared unexported.
@Component({...})
class FooCmp {...}
// Indirect export of FooCmp
export {FooCmp};
```
This is not an immediate problem for most application builds, since the
default value for `compileNonExportedClasses` is `true` and therefore such
classes get compiled regardless.
However, in the Angular Language Service now, `compileNonExportedClasses` is
forcibly overridden to `false`. That's because the tsconfig used by the IDE
and Language Service is often far broader than the application build's
configuration, and pulls in test files that can contain unexported classes
not designed with AOT compilation in mind.
Therefore, the Language Service has trouble working with such structures.
In this commit, the `ReflectionHost` gains a new API for detecting whether a
class is exported. The implementation of this method now not only considers
the `export` modifier, but also scans the `ts.SourceFile` for indirect
exports like the example above. This ensures the above case will be
processed directly in the Language Service.
This new operation is cached using an expando symbol on the `ts.SourceFile`,
ensuring good performance even when scanning large source files with lots of
exports (e.g. a FESM file under `ngcc`).
Fixes#42184.
PR Close#42207
Update the supported range of node versions for to be less restrictive, no longer causing
yarn or npm to fail engine's checks for future versions of node.
While this change will no longer cause yarn or npm to fail these engine's check, this does
not reflect a change in the officially supported versions of node for Angular. Angular
continues to maintain support for Active LTS and Maintenance LTS versions of node.
PR Close#42205
Remove publishConfig property from the package.json entry for each of the entries in
the publish configuration. Using the wombat proxy is now ensured/managed by the
ng-dev release tooling.
PR Close#42104
Now that there is no need to work around the source-map bug in TypeScript
(https://github.com/Microsoft/TypeScript/issues/29300) we can just use
`resolvedTemplateUrl` for the source-map URL, rather than having a separate
property.
PR Close#42000
Indirect templates are templates produced by a non-literal expression value
of the `template` field in `@Component`. The compiler can statically
determine the template string, but there is not guaranteed to be a physical
file which contains the bytes of the template string. For example, the
template string may be computed by a concatenation expression: 'a' + 'b'.
Previously, the compiler would use the TS file path as the source map path
for indirect templates. This is incorrect, however, and breaks source
mapping for such templates, since the offsets within the template string do
not correspond to bytes of the TS file.
This commit returns the compiler to its old behavior for indirect templates,
which is to use `''` as the source map URL for such templates.
Fixes#40854
PR Close#41973
When `checkTypeOfPipes` is set to `false`, our TCB currently generates
the a statement like the following when pipes appear in the template:
`(_pipe1 as any).transform(args)`
This did enable us to get _some_ information from the Language Service
about pipes in this case because we still had access to the pipe
instance. However, because it is immediately cast to `any`, we cannot
get type information about the transform access. That means actions like "go to
definition", "find references", "quick info", etc. will return
incomplete information or fail altogether.
Instead, this commit changes the TCB to generate `(_pipe1.transform as any)(args)`.
This gives us the ability to get complete information for the LS
operations listed above.
PR Close#40523
This commit updates the logic in the LS renaming to handle renaming of
pipes, both from the name expression in the pipe metadata as well as
from the template.
The approach here is to introduce a new concept for renaming: an
"indirect" rename. In this type of rename, we find rename locations
in with the native TS Language Service using a different node than the
one we are renaming. Using pipes as an example, if we want to rename the
pipe name from the string literal expression, we use the transform
method to find rename locations rather than the string literal itself
(which will not return any results because it's just a string).
So the general approach is:
* Determine the details about the requested rename location, i.e. the
targeted template node and symbol for a template rename, or the TS
node for a rename outside a template.
* Using the details of the location, determine if the node is attempting
to rename something that is an indirect rename (pipes, selectors,
bindings). Other renames are considered "direct" and we use whatever
results the native TSLS returns for the rename locations.
* In the case of indirect renames, we throw out results that do not
appear in the templates (in this case, the shim files). These results will be
for the "indirect" rename that we don't want to touch, but are only
using to find template results.
* Create an additional rename result for the string literal expression
that is used for the input/output alias, the pipe name, or the
selector.
Note that renaming is moving towards being much more accurate in its
results than "find references". When the approach for renaming
stabilizes, we may want to then port the changes back to being shared
with the approach for retrieving references.
PR Close#40523
This allows the linker to be used as a true Babel plugin. In a Babel
configuration file, include the linker as follows:
```js
{
plugins: [
'@angular/compiler-cli/linker/babel',
]
}
```
or, if you need to specify configuration options:
```js
{
plugins: [
['@angular/compiler-cli/linker/babel', {linkerJitMode: true}],
]
}
```
PR Close#41918
This commit changes the reference emitters in the Ivy compiler to prefer
non-aliased exports if they exist. This avoids selecting "private
exports" that may not be stable, e.g. the reexports that have been added
by the View Engine compiler. Such reexports are not stable and are
therefore not suitable to be emitted into partial compilations, as the
output of partial compilations should only reference stable symbols
from upstream libraries.
An alternative solution has been considered where ViewEngine-generated
exports would gain a certain prefix, such that the Ivy compiler could
just exclude those exports (see #41443). However, that solution would
be insufficient in case a library is built using partial compilation and
while depending itself on a VE-compiled library from earlier versions of
Angular, where the magic prefix would be missing. For such libraries,
ngcc would have generated reexports using the declared name if not already
present so this change does result in choosing the correct export.
Because ngcc always generates reexports using the declared name even if
an aliased export is present, this change causes those ngcc-generated
exports to be chosen in downstream libraries using partial compilation.
This is unfortunate as it means that the declared names become
effectively public even if the library author was intentionally
exporting it using an alias. This commit does not address this problem;
it is expected that this should not result in widespread issues across
the library ecosystem.
Fixes#41277
PR Close#41866
Some partial libraries have been minified, which results in the declaration
calls being being converted from property accesses to indexed accesses.
This commit ensures that the linker can process these calls.
Fixes#41655
PR Close#41747
Some partial libraries have been minified, which results in boolean literals
being converted to `!0` and `!1`. This commit ensures that the linker can
process these values.
Fixes#41655
PR Close#41747
We have a check that determines whether to generate property binding instructions for an `ng-template`. The check looks at whether the tag name is exactly `ng-template`, but the problem is that if the tag is placed in a non-HTML namespace (e.g. `svg`), the tag name will actually be `:namespace:ng-template` and the check will fail.
These changes resolve the issue by looking at the tag name without the namespace.
Fixes#41308.
PR Close#41669
Currently if a component defines a template inline, but not through a
string literal, the partial compilation references the template expression
as is. This is problematic because the component declaration can no longer
be processed by the linker later as there is no static interpretation. e.g.
```js
const myTemplate = `...`;
TestCmp.ɵcmp = i0.ɵɵngDeclareComponent({
version: "0.0.0-PLACEHOLDER",
type: TestCmp,
selector: "test-cmp",
ngImport: i0,
template: myTemplate,
isInline: true
});
```
To fix this, we use the the resolved template in such cases so that
the linker can process the template/component declaration as expected.
PR Close#41583
With the introduction of the partial compilation, the Angular compiler's
existing `parseTemplate` method has been extended to pass through multiple
properties purely in favor of the partial compilation.
e.g. the `parseTemplate` function now accepts an "option" called `isInline`.
This option is just passed through and returned as part of the `ParsedTemplate`.
This is not ideal because the `parseTemplate` function doesn't care
whether the specified template was inline or not. This commit cleans
up the `parseTemplate` compiler function so that nothing needed only
for the partial compilation is added to it.
We introduce a new struct for additional template information that
is specific to the generation of the `declareComponent` function. With
that change, we can simplify the component decorator handler and keep
logic more local.
PR Close#41583
This adds string literals, number literals, `true`, `false`, `null` and
`undefined` to autocomplete results in templates.
For example, when completing an input of union type.
Component: `@Input('input') input!: 'a'|'b'|null;`
Template: `[input]="|"`
Provide `'a'`, `'b'`, and `null` as autocompletion entries.
Previously we did not include literal types because we only included
results from the component context (`ctx.`) and the template scope.
This is the second attempt at this. The first attempt is in
1d12c50f63 and it was reverted in 75f881e078.
PR Close#41645
This is follow-up from #41437 and it reduces the amount of code we generate for safe property accesses (`a?.b`) and nullish coalescing (`a ?? b`) by:
1. Reusing variables in nested nullish coalescing expressions.
2. Not initializing temporary variables to `null`. The way our code is generated means that the value will always be overwritten before we compare against it so the initializer didn't really matter.
Fixes#41491.
PR Close#41563
The asynchronous preprocessing check was not accounting for components that did not have any inline styles. In that case, the cache did not have an entry which then allowed the asynchronous check to run and fail the compilation. The caching during the asynchronous analysis phase now handles components without inline styles.
PR Close#41602
Previously, it was not possible to block a partial-linker from trying to
process a declaration that was defined in a newer version of Angular than
that of the partial-linker. For example, if a partial-linker was published as
part of version 12.0.0, there was no way for a partially-compiled declaration
compiled via version 13.0.0 to tell the 12.0.0 linker that it would be invalid
to attempt to process it.
This commit adds a new `minVersion` property to partial-declarations, which is
interpreted as the "minimum partial-linker version" that can process this
declaration. When selecting a partial-linker for such a declaration, the known
linker version ranges are checked to find the most recent linker whose version
range has an overlap with the interpreted declaration range.
This approach allows us to set a minimum version for a declaration, which
can inform an old partial-linker that will it not be able to accurately
process the declaration.
Note that any pre-release part to versions are ignored in this selection
process.
The file-linker can be configured, via the `unknownDeclarationVersionHandling`
property of `LinkerOptions`, to handle such a situation in one of three ways:
- `error` - the version mismatch is a fatal error
- `warn` - a warning is sent to the logger but the most recent partial-linker
will attempt to process the declaration anyway.
- `ignore` - the most recent partial-linker will, silently, attempt to process
the declaration.
The default is to throw an error.
Closes#41497
PR Close#41578
With this commit, the language service will first try to locate a
pre-compiled style file with the same name when a `css` is provided in
the `styleUrls`. This prevents a missing resource diagnostic for when the
compiled file is not available in the language service environment and also
allows "go to definition" to go to that pre-compiled file.
Fixes angular/vscode-ng-language-service#1263
PR Close#41538
This adds string literals, number literals, `true`, `false`, `null` and
`undefined` to autocomplete results in templates.
For example, when completing an input of union type.
Component: `@Input('input') input!: 'a'|'b'|null;`
Template: `[input]="|"`
Provide `'a'`, `'b'`, and `null` as autocompletion entries.
Previously we did not include literal types because we only included
results from the component context (`ctx.`) and the template scope.
PR Close#41456
There were three options being made available to users of the linker:
- ` enableI18nLegacyMessageIdFormat`
- `i18nNormalizeLineEndingsInICUs`
- ` i18nUseExternalIds`
None of these should actually be configurable at linking time
because partially-linked libraries have tighter restrictions on
what i18n options can be used.
This commit removes those options from the `LinkerOptions` interface.
It was considered to add a check for backwards compatibilty to ensure
that if these options were being passed, and were different to the expected
defaults, we would throw an informative error. But from looking at the
Angular CLI (the only known client of the linker) it has never been setting
these options so they have already always been set to the defaults.
BREAKING CHANGE:
Linked libraries no longer generate legacy i18n message ids. Any downstream
application that provides translations for these messages, will need to
migrate their message ids using the `localize-migrate` command line tool.
Closes#40673
PR Close#41554
Generally, the compiler assumes that `ts.SourceFile`s are immutable objects.
If a new `ts.Program` is compared to an old one, and a `ts.SourceFile`
within that program has not changed its object identity, the compiler will
assume that its prior analysis and understanding of that source file is
still valid.
However, not all TypeScript workflows uphold this assumption. For
`ts.Program`s that originate from the `ts.LanguageService`, some source
files may be re-parsed or otherwise undergo mutations without changing their
object identity. This breaks the compiler's incremental workflow.
Within such environments, it's necessary to track source file changes
differently. In addition to object identity, it's necessary to compare a
"version" string associated with each source file, between when that file is
analyzed originally and when a new program is presented that still contains
it. It's possible for the object identity of the source file to be the same,
but the version string to have changed, indicating that the source file
should be treated as changed.
This commit adds an optional method `getSourceFileVersion` to the
`ProgramDriver`, to provide access to version information if available. When
this method is present, the compiler will build a map of source file version
strings, and use this map to augment identity comparison during incremental
compilation.
PR Close#41475
This commit replaces the `IncrementalDriver` abstraction which powered
incremental compilation in the compiler with a new `IncrementalCompilation`
design. Principally, it separates two concerns which were tied together in
the previous implementation:
1. Tracking the reusable state of a compilation at any given point that
could be reused in a subsequent future compilation.
2. Making use of a prior compilation's state to accelerate the current one.
The new abstraction adds explicit tracking and types to deal with both of
these concerns separately, which greatly reduces the complexity of the state
tracking that `IncrementalDriver` used to perform.
PR Close#41475
The compiler frequently translates TypeScript source file `fileName` strings
into absolute paths, via a `fs.resolve()` operation. This is often done via
the helper function `absoluteFromSourceFile`.
This commit adds a caching mechanism whereby the `AbsoluteFsPath` of a
source file is patched onto the object under an Angular-specific symbol
property, allowing the compiler to avoid resolving the path on subsequent
calls.
PR Close#41475
This commit implements signature help in the Language Service, on top of
TypeScript's implementation within the TCB.
A separate PR adds support for translation of signature help data from TS'
API to the LSP in the Language Service extension.
PR Close#41581
When an Ivy NgModule is imported into a View Engine build, it doesn't have
metadata.json files that describe it as an NgModule, so it appears to VE
builds as a plain, undecorated class. The error message shown in this
situation generic and confusing, since it recommends adding an @NgModule
annotation to a class from a library.
This commit adds special detection into the View Engine compiler to give a
more specific error message when an Ivy NgModule is imported.
PR Close#41534
In the compiler, the `NgtscProgram` is responsible for creating the
`ts.Program` instance to use, potentially using a `ts.Program` from a
prior compilation to enable incremental compilation. It used to track
a `reuseTsProgram` for this purpose, however the `ts.Program` that
should be used as reuse program is also tracked by the `NgCompiler`
instance that is used by `NgtscProgram`. The `NgtscProgram` can leverage
the state from `NgCompiler` instead of keeping track of it by itself.
PR Close#41289
When multiple occurrences of the same package exist within a single
TypeScript compilation unit, TypeScript deduplicates the source files
by introducing redirected source file proxies. Such proxies are
recreated during an incremental compilation even if the original
declaration file did not change, which caused the compiler not to reuse
any work from the prior compilation.
This commit changes the incremental driver to recognize a redirected
source file and treat them as their unredirected source file.
PR Close#41448
In environments such as the Language Service where inline type-checking code
is not supported, the compiler would previously produce a diagnostic when a
template would require inlining to check. This happened whenever its
component class had generic parameters with bounds that could not be safely
reproduced in an external TCB. However, this created a bad user experience
for the Language Service, as its features would then not function with such
templates.
Instead, this commit changes the compiler to use the same strategy for
inline TCBs as it does for inline type constructors - falling back to `any`
for generic types when inlining isn't available. This allows the LS to
support such templates with slightly weaker type-checking semantics, which
a test verifies. There is still a case where components that aren't
exported require an inline TCB, and the compiler will still generate a
diagnostic if so.
Fixes#41395
PR Close#41513
Previously, the `DefaultImportRecorder` interface was used as follows:
1. During the analysis phase, the default import declaration of an
identifier was recorded.
2. During the emit phase each emitted identifier would be recorded.
The information from step 1 would then be used to determine the
default import declaration of the identifier which would be
registered as used.
3. A TypeScript transform would taint all default imports that were
registered as used in step 2 such that the imports are not elided
by TypeScript.
In incremental compilations, a file may have to be emitted even if its
analysis data has been reused from the prior compilation. This would
mean that step 1 is not executed, resulting in a mismatch in step 2 and
ultimately in incorrectly eliding the default. This was mitigated by
storing the mapping from identifier to import declaration on the
`ts.SourceFile` instead of a member of `DefaultImportTracker` such that
it would also be visible to the `DefaultImportRecorder` of subsequent
compiles even if step 1 had not been executed.
Ultimately however, the information that is being recorded into the
`DefaultImportRecorder` has a longer lifetime than a single
`DefaultImportRecorder` instance, as that is only valid during a single
compilation whereas the identifier to import declaration mapping
outlives a single compilation. This commit replaces the registration of
this mapping by attaching the default import declaration on the output
AST node that captures the identifier. This enables the removal of
all of the `DefaultImportRecorder` usages throughout the analysis phase
together with the `DefaultImportRecorder` interface itself.
PR Close#41557
The Angular compiler has to actively keep default import statements
alive if they were only used in type-only positions, but have been
emitted as value expressions for DI purposes. A problem occurred in
incremental recompilations, where the relationship between an identifier
usage and its corresponding default import would not be considered. This
could result in the removal of the default import statement and caused
a `ReferenceError` at runtime.
This commit fixes the issue by storing the association from an
identifier to its default import declaration on the source file itself,
instead of within the `DefaultImportTracker` instance. The
`DefaultImportTracker` instance is only valid for a single compilation,
whereas the association from an identifier to a default import
declaration is valid as long as the `ts.SourceFile` is the same
instance.
A subsequent commit refactor the `DefaultImportTracker` to no longer
be responsible for registering the association, as its lifetime is
conceptually too short to do so.
Fixes#41377
PR Close#41557
The `emitDecoratorMetadata` compiler option does not have to be enabled
as Angular decorators are transformed by the AOT compiler. Having the
option enabled in our tests can hide issues around import preservation,
as with `emitDecoratorMetadata` enabled the TypeScript compiler itself
does not elide imports even if they are only used in type-positions.
This is unlike having `emitDecoratorMetadata` disabled, however; in that
case the Angular compiler has to actively trick TypeScript into
retaining default imports when an identifier in a type-only position has
been reified into a value position for DI purposes.
A subsequent commit addresses a bug in default import preservation
that relies on this flag being `false`.
PR Close#41557
With this change we update several dependencies to avoid Renovate creating a lot of PRs during onboarding. We also remove yarn workspaces as after further analysis these are not needed.
Certain dependencies such as `@octokit/rest`, `remark` and `@babel/*` have not been updated as they require a decent amount of work to update, and it's best to leave them for a seperate PR.
PR Close#41434
This commit refactors the generated code for class metadata in partial
compilation mode. Instead of emitting class metadata into a top-level
`ɵsetClassMetadata` call guarded by `ngDevMode` flags, the class
metadata is now declared using a top-level `ɵɵngDeclareClassMetadata`
call.
PR Close#41200
This commit marks the `compilationMode` compiler option as stable, such
that libraries can be compiled in partial compilation mode.
In partial compilation mode, the compiler's output changes from fully
compiled AOT definitions to an intermediate form using partial
declarations. This form is suitable to be published to NPM, which now
allows libraries to be compiled and published using the Ivy compiler.
Please be aware that libraries that have been compiled using this mode
can only be used in Angular 12 applications and up; they cannot be used
when Ivy is disabled (i.e. when using View Engine) or in versions of
Angular prior to 12. The `compilationMode` option has no effect if
`enableIvy: false` is used.
Closes#41496
PR Close#41518
`NgCompiler` previously had a notion of the "next" `ts.Program`, which
served two purposes:
* it allowed a client using the `ts.createProgram` API to query for the
latest program produced by the previous `NgCompiler`, as a starting
point for building the _next_ program that incorporated any new user
changes.
* it allowed the old `NgCompiler` to be queried for the `ts.Program` on
which all prior state is based, which is needed to compute the delta
from the new program to ultimately determine how much of the prior
state can be reused.
This system contained a flaw: it relied on the `NgCompiler` knowing when
the `ts.Program` would be changed. This works fine for changes that
originate in `NgCompiler` APIs, but a client of the `TemplateTypeChecker`
may use that API in ways that create new `ts.Program`s without the
`NgCompiler`'s knowledge. This caused the `NgCompiler`'s concept of the
"next" program to get out of sync, causing incorrectness in future
incremental analysis.
This refactoring cleans up the compiler's `ts.Program` management in
several ways:
* `TypeCheckingProgramStrategy`, the API which controls `ts.Program`
updating, is renamed to the `ProgramDriver` and extracted to a separate
ngtsc package.
* It loses its responsibility of determining component shim filenames. That
functionality now lives exclusively in the template type-checking package.
* The "next" `ts.Program` concept is renamed to the "current" program, as
the "next" name was misleading in several ways.
* `NgCompiler` now wraps the `ProgramDriver` used in the
`TemplateTypeChecker` to know when a new `ts.Program` is created,
regardless of which API drove the creation, which actually fixes the bug.
PR Close#41291
This commit changes the partial compilation so that it outputs declarations
rather than definitions for injectables.
The JIT compiler and the linker are updated to be able to handle these
new declarations.
PR Close#41316
The other similar interfaces were renamed in https://github.com/angular/angular/pull/41119,
but this one was left since it had existed before Ivy. It looks like the interface was
never actually exposed on npm so it is safe to rename this one too.
PR Close#41316
Currently, we throw a FatalDiagnosticError when we fail to load a resource
(`templateUrl` or `styleUrl`) at various stages in the compiler. This prevents
analysis of the component from completing. This will result in in users not being
able to get any information in the component template when there is a missing
`styleUrl`, for example.
This commit simply tracks the diagnostic, marks the component as poisoned, and
continues merrily along. Environments configured to use poisoned data
(like the language service) will then be able to use other information from the analysis.
Fixes https://github.com/angular/vscode-ng-language-service/issues/1241
PR Close#41403
Currently, fs-extra is used to delete a directory recursively, but this is already available in native Node.JS. Hence, making this dependency redundant.
See: https://nodejs.org/docs/latest-v12.x/api/fs.html
PR Close#41445
This change introduces a new hook on the `ResourceHost` interface named `transformResource`.
Resource transformation allows both external and inline resources to be transformed prior to
compilation by the AOT compiler. This provides support for tooling integrations to enable
features such as preprocessor support for inline styles.
Only style resources are currently supported. However, the infrastructure is in place to add
template support in the future.
PR Close#41307
Adds perf tracing for the public methods in LanguageService. If the log level is verbose or higher,
trace performance results to the tsServer logger. This logger is implemented on the extension side
in angular/vscode-ng-language-service.
PR Close#41319
This enumeration will now start to appear in publicly facing code,
as part of declarations, so we remove the R3 to make it less specific
to the internal name for the Ivy renderer/compiler.
PR Close#41231
Each of the annotations had its own function for doing this, and those
methods were generally employing spread operators that could allow
unwanted properties to leak into the factory metadata object.
This commit supplies a shared function `toFactoryMetadata()` that
avoids this spread of properties into the returned function.
PR Close#41231
Now that other values were removed from `R3ResolvedDependencyType`,
its meaning can now be inferred from the other properties in the
`R3DeclareDependencyMetadata` type. This commit removes this enum
and updates the code to work without it.
PR Close#41231
When `ɵngDeclareInjector()` was implemented, the `factory` was moved
out to the `ɵfac` static property on the class. This check was not updated.
PR Close#41231
This instruction was created to work around a problem with injecting a
`ChangeDetectorRef` into a pipe. See #31438. This fix required special
metadata for when the thing being injected was a `ChangeDetectorRef`.
Now this is handled by adding a flag `InjectorFlags.ForPipe` to the
`ɵɵdirectiveInject()` call, which avoids the need to special test_cases
`ChangeDetectorRef` in the generated code.
PR Close#41231
This commit changes the partial compilation so that it outputs declaration
calls rather than compiled factory functions.
The JIT compiler and the linker are updated to be able to handle these
new declarations.
PR Close#41231
A previous commit implemented a streamlined performance metric reporting
system for the compiler-cli, controlled via the compiler option
`tracePerformance`.
This commit adds a custom Bazel flag rule //packages/compiler-cli:ng_perf
to the repository, and wires it through to the `ng_module` implementation
such that if the flag is set, `ng_module` will produce perf results as part
of the build. The underlying mechanism of `//:ng_perf` is not exported from
`@angular/bazel` as a public rule that consumers can use, so there is little
risk of accidental dependency on the contents of these perf traces.
An alias is added so that `--ng_perf` is a Bazel flag which works in our
repository.
PR Close#41125
ngtsc has an internal performance tracing package, which previously has not
really seen much use. It used to track performance statistics on a very
granular basis (microseconds per actual class analysis, for example). This
had two problems:
* it produced voluminous amounts of data, complicating the analysis of such
results and providing dubious value.
* it added nontrivial overhead to compilation when used (which also affected
the very performance of the operations being measured).
This commit replaces the old system with a streamlined performance tracing
setup which is lightweight and designed to be always-on. The new system
tracks 3 metrics:
* time taken by various phases and operations within the compiler
* events (counters) which measure the shape and size of the compilation
* memory usage measured at various points of the compilation process
If the compiler option `tracePerformance` is set, the compiler will
serialize these metrics to a JSON file at that location after compilation is
complete.
PR Close#41125
TypeScript 4.2 has changed its emitted syntax for synthetic constructors
when using `downlevelIteration`, which affects ES5 bundles that have
been downleveled from ES2015 bundles. This is typically the case for UMD
bundles in the APF spec, as they are generated by downleveling the
ESM2015 bundle into ES5. ngcc needs to detect the new syntax in order to
correctly identify synthesized constructor functions in ES5 bundles.
Fixes#41298
PR Close#41305
The Ivy Language Service uses the compiler's template type-checking engine,
which honors the configuration in the user's tsconfig.json. We recommend
that users upgrade to `strictTemplates` mode in their projects to take
advantage of the best possible type inference, and thus to have the best
experience in Language Service.
If a project is not using `strictTemplates`, then the compiler will not
leverage certain type inference options it has. One case where this is very
noticeable is the inference of let- variables for structural directives that
provide a template context guard (such as NgFor). Without `strictTemplates`,
these guards will not be applied and such variables will be inferred as
'any', degrading the user experience within Language Service.
This is working as designed, since the Language Service _should_ reflect
types exactly as the compiler sees them. However, the View Engine Language
Service used its own type system that _would_ infer these types even when
the compiler did not. As a result, it's confusing to some users why the
Ivy Language Service has "worse" type inference.
To address this confusion, this commit implements a suggestion diagnostic
which is shown in the Language Service for variables which could have been
narrowed via a context guard, but the type checking configuration didn't
allow it. This should make the reason why variables receive the 'any' type
as well as the action needed to improve the typings much more obvious,
improving the Language Service experience.
Fixes angular/vscode-ng-language-service#1155
Closes#41042
PR Close#41072
The `ɵɵInjectorDef` interface is internal and should not be published publicly
as part of libraries. This commit updates the compiler to render an opaque
type, `ɵɵInjectorDeclaration`, for this instead, which appears in the typings
for compiled libraries.
PR Close#41119
Th `ɵɵFactoryDef` type will appear in published libraries, via their typings
files, to describe what type dependencies a DI factory has. The parameters
on this type are used by tooling such as the Language Service to understand
the DI dependencies of the class being created by the factory.
This commit moves the type to the `public_definitions.ts` file alongside
the other types that have a similar role, and it renames it to `ɵɵFactoryDeclaration`
to align it with the other declaration types such as `ɵɵDirectiveDeclaration`
and so on.
PR Close#41119
These types are only used in the generated typings files to provide
information to the Angular compiler in order that it can compile code
in downstream libraries and applications.
This commit aliases these types to `unknown` to avoid exposing the
previous alias types such as `ɵɵDirectiveDef`, which are internal to
the compiler.
PR Close#41119
This commit fixes the behavior when creating a type constructor for a directive when the following
conditions are met.
1. The directive has bound generic parameters.
2. Inlining is not available. (This happens for language service compiles).
Previously, we would throw an error saying 'Inlining is not supported in this environment.' The
compiler would stop type checking, and the developer could lose out on getting errors after the
compiler gives up.
This commit adds a useInlineTypeConstructors to the type check config. When set to false, we use
`any` type for bound generic parameters to avoid crashing. When set to true, we inline the type
constructor when inlining is required.
Addresses #40963
PR Close#41043
For the tests in //packages/compiler-cli/src/ngtsc/typecheck, this
commits uses a `TypeCheckFile` for the environment, rather than a
`FakeEnvironment`. Using a real environment gives us more flexibility
with testing.
PR Close#41043
The partial declaration of a component includes the list of directives
that are used in its template, including some metadata of the directive
which can be used during actual compilation of the component. Used
components are currently part of this list, as components are also
directives. This commit splits the used components into a dedicate
property in the partial declaration, which allows for template
compilation to optimize the generated code for components.
PR Close#41104
This commit complements the support for the `__spreadArray` helper that
was added in microsoft/TypeScript#41523. The prior helpers `__spread`
and `__spreadArrays` used the `__read` helper internally, but the helper
is now emitted as an argument to `__spreadArray` so ngcc now needs to
support evaluating it statically. The real implementation of `__read`
reads an iterable into an array, but for ngcc's static evaluation
support it is sufficient to only deal with arrays as is. Additionally,
the optional `n` parameter is not supported as that is only emitted for
array destructuring syntax, which ngcc does not have to support.
PR Close#41201
In TypeScript 4.2 the `__spread` and `__spreadArrays` helpers were both
replaced by the new helper function `__spreadArray` in
microsoft/TypeScript#41523. These helpers may be used in downleveled
JavaScript bundles that ngcc has to process, so ngcc has the ability to
statically detect these helpers and provide evaluation logic for them.
Because Angular is adopting support for TypeScript 4.2 it becomes
possible for libraries to be compiled by TypeScript 4.2 and thus ngcc
has to add support for the `__spreadArray` helper. The deprecated
`__spread` and `__spreadArrays` helpers are not affected by this change.
Closes#40394
PR Close#41201
The recently introduced typings-only mode in ngcc would incorrectly
write compiled JavaScript files if typings-only mode was requested, in
case the typings of the entry-point had already been processed in a
prior run of ngcc. The corresponding format property for which the
JavaScript files were written were not marked as processed, though, as
the typings-only mode excluded the format property itself from being
marked as processed. Consequently, subsequent runs of ngcc would not
consider the entry-point to have been processed and recompile the
JavaScript bundle once more, resulting in duplicate ngcc imports.
Fixes#41198
PR Close#41209
This commit changes the partial compilation so that it outputs declaration
calls rather than definition calls for NgModules and Injectors.
The JIT compiler and the linker are updated to be able to handle these
new declarations.
PR Close#41080
There were a number of almost identical interfaces used in
the same way throughout the Render3 compiler code.
This commit changes the compiler to use the same interface
throughout.
PR Close#41080
This function is declared in multiple places. The instances inside
`compiler` are slightly different to those in `compiler-cli`. So this
commit consolidates them into two reusable functions.
PR Close#41080
BREAKING CHANGE:
Switching default of `emitDistinctChangesOnlyDefaultValue`
which changes the default behavior and may cause some applications which
rely on the incorrect behavior to fail.
`emitDistinctChangesOnly` flag has also been deprecated and will be
removed in a future major release.
The previous implementation would fire changes `QueryList.changes.subscribe`
whenever the `QueryList` was recomputed. This resulted in an artificially
high number of change notifications, as it is possible that recomputing
`QueryList` results in the same list. When the `QueryList` gets recomputed
is an implementation detail, and it should not be the thing that determines
how often change event should fire.
Unfortunately, fixing the behavior outright caused too many existing
applications to fail. For this reason, Angular considers this fix a
breaking fix and has introduced a flag in `@ContentChildren` and
`@ViewChildren`, that controls the behavior.
```
export class QueryCompWithStrictChangeEmitParent {
@ContentChildren('foo', {
// This option is the new default with this change.
emitDistinctChangesOnly: true,
})
foos!: QueryList<any>;
}
```
For backward compatibility before v12
`emitDistinctChangesOnlyDefaultValue` was set to `false. This change
changes the default to `true`.
PR Close#41121
The Angular compiler creates two `ts.Program`s; one for emit and one for
template type-checking. The creation of the type-check program could
benefit from reusing the `ts.ModuleResolutionCache` that was primed
during the creation of the emit program. This requires that the compiler
host implements `resolveModuleNames`, as otherwise TypeScript will setup
a `ts.ModuleResolutionHost` of its own for both programs.
This commit ensures that `resolveModuleNames` is always implemented,
even if the originally provided compiler host does not. This is
beneficial for the `ngc` binary.
PR Close#39693
Previously, injector definitions contained a `factory` property that
was used to create a new instance of the associated NgModule class.
Now this factory has been moved to its own `ɵfac` static property on the
NgModule class itself. This is inline with how directives, components and
pipes are created.
There is a small size increase to bundle sizes for each NgModule class,
because the `ɵfac` takes up a bit more space:
Before:
```js
let a = (() => {
class n {}
return n.\u0275mod = c.Cb({type: n}),
n.\u0275inj = c.Bb({factory: function(t) { return new (t || n) }, imports: [[e.a.forChild(s)], e.a]}),
n
})(),
```
After:
```js
let a = (() => {
class n {}
return n.\u0275fac = function(t) { return new (t || n) },
n.\u0275mod = c.Cb({type: n}),
n.\u0275inj = c.Bb({imports: [[r.a.forChild(s)], r.a]}),
n
})(),
```
In other words `n.\u0275fac = ` is longer than `factory: ` (by 5 characters)
and only because the tooling insists on encoding `ɵ` as `\u0275`.
This can be mitigated in a future PR by only generating the `ɵfac` property
if it is actually needed.
PR Close#41022
This commit adds a semi-comprehensive README file which describes the
design goals and implementation of the template type checking engine,
which powers the Angular Language Service as well as the main compiler's
understanding of types in templates.
PR Close#41004
The compiler performs cycle analysis for the used directives and pipes
of a component's template to avoid introducing a cyclic import into the
generated output. The used directives and pipes are represented by their
output expression which would typically be an `ExternalExpr`; those are
responsible for the generation of an `import` statement. Cycle analysis
needs to determine the `ts.SourceFile` that would end up being imported
by these `ExternalExpr`s, as the `ts.SourceFile` is then checked against
the program's `ImportGraph` to determine if the import is allowed, i.e.
does not introduce a cycle. To accomplish this, the `ExternalExpr` was
dissected and ran through module resolution to obtain the imported
`ts.SourceFile`.
This module resolution step is relatively expensive, as it typically
needs to hit the filesystem. Even in the presence of a module resolution
cache would these module resolution requests generally see cache misses,
as the generated import originates from a file for which the cache has
not previously seen the imported module specifier.
This commit removes the need for the module resolution by wrapping the
generated `Expression` in an `EmittedReference` struct. This allows the
reference emitter mechanism that is responsible for generating the
`Expression` to also communicate from which `ts.SourceFile` the
generated `Expression` would be imported, precluding the need for module
resolution down the road.
PR Close#40948
The import graph scans source files for its import and export statements
to extract the source files that it imports/exports. Such statements
contain a module specifier string and this module specifier used to be
resolved to the actual source file using an explicit module resolution
step. This is especially expensive in incremental rebuilds, as the
module resolution cache has not been primed during program creation
(assuming that the incremental program was able to reuse the module
resolution results from a prior compilation). This meant that all module
resolution requests would have to hit the filesystem, which is
relatively slow.
This commit is able to replace the module resolution with TypeScript's
bound symbol of the module specifier. This symbol corresponds with the
`ts.SourceFile` that is being imported/exported, which is exactly what
the import graph was interested in. As a result, no filesystem accesses
are done anymore.
PR Close#40948
This change marks all relevant define* callsites as pure, causing the compiler to
emmit either @__PURE__ or @pureOrBreakMyCode annotation based on whether we are
compiling code annotated for closure or terser.
This change is needed in g3 where we don't run build optimizer but we
need the code to be annotated for the closure compiler.
Additionally this change allows for simplification of CLI and build optimizer as they
will no longer need to rewrite the generated code (there are still other places where
a build optimizer rewrite will be necessary so we can't remove it, we can only simplify it).
PR Close#41096
In Angular programs, changing a file may require other files to be
emitted as well due to implicit NgModule dependencies. For example, if
the selector of a directive is changed then all components that have
that directive in their compilation scope need to be recompiled, as the
change of selector may affect the directive matching results.
Until now, the compiler solved this problem using a single dependency
graph. The implicit NgModule dependencies were represented in this
graph, such that a changed file would correctly also cause other files
to be re-emitted. This approach is limited in a few ways:
1. The file dependency graph is used to determine whether it is safe to
reuse the analysis data of an Angular decorated class. This analysis
data is invariant to unrelated changes to the NgModule scope, but
because the single dependency graph also tracked the implicit
NgModule dependencies the compiler had to consider analysis data as
stale far more often than necessary.
2. It is typical for a change to e.g. a directive to not affect its
public API—its selector, inputs, outputs, or exportAs clause—in which
case there is no need to re-emit all declarations in scope, as their
compilation output wouldn't have changed.
This commit implements a mechanism by which the compiler is able to
determine the impact of a change by comparing it to the prior
compilation. To achieve this, a new graph is maintained that tracks all
public API information of all Angular decorated symbols. During an
incremental compilation this information is compared to the information
that was captured in the most recently succeeded compilation. This
determines the exact impact of the changes to the public API, which
is then used to determine which files need to be re-emitted.
Note that the file dependency graph remains, as it is still used to
track the dependencies of analysis data. This graph does no longer track
the implicit NgModule dependencies, which allows for better reuse of
analysis data.
These changes also fix a bug where template type-checking would fail to
incorporate changes made to a transitive base class of a
directive/component. This used to be a problem because transitive base
classes were not recorded as a transitive dependency in the file
dependency graph, such that prior type-check blocks would erroneously
be reused.
This commit also fixes an incorrectness where a change to a declaration
in NgModule `A` would not cause the declarations in NgModules that
import from NgModule `A` to be re-emitted. This was intentionally
incorrect as otherwise the performance of incremental rebuilds would
have been far worse. This is no longer a concern, as the compiler is now
able to only re-emit when actually necessary.
Fixes#34867Fixes#40635Closes#40728
PR Close#40947
For certain generated function calls, the compiler emits a 'PURE' annotation
which informs Terser (the optimizer) about the purity of a specific function
call. This commit expands that system to produce a new Closure-specific
'pureOrBreakMyCode' annotation when targeting the Closure optimizer instead
of Terser.
PR Close#41021
The current logic in the compiler is to bail when there are errors when
parsing a template into an HTML AST or when there are errors in the i18n
metadata. As a result, a template with these types of parse errors
_will not have any information for the language service_. This is because we
never attempt to conver the HTML AST to a template AST in these
scenarios, so there are no template AST nodes for the language service
to look at for information. In addition, this also means that the errors
are never displayed in the template to the user because there are no
nodes to map the error to.
This commit adds an option to the template parser to temporarily ignore
the html parse and i18n meta errors and always perform the template AST
conversion. At the end, the i18n and HTML parse errors are appended to
the returned errors list. While this seems risky, it at least provides
us with more information than we had before (which was 0) and it's only
done in the context of the language service, when the compiler is
configured to use poisoned data (HTML parse and i18n meta errors can be
interpreted as a "poisoned" template).
fixes angular/vscode-ng-language-service#1140
PR Close#41068
1. The error function throws, so no code after it is reachable.
2. Some switch statements are exhaustive, so no code after them are reachable.
PR Close#40984
Ngcc uses the `paths` property to compute the potential base-paths
for packages that are being processed. If the `paths` contain a wildcard
`*` within a path segment, ngcc was not finding the base-path correctly.
Now when a wildcard is found, there is an additional search to look for
paths that might match the wildcard.
Fixes#41014
PR Close#41033
Previously, when `ngcc` encountered an entry-point with a format-path
that pointed to a non-existing or empty file it would throw an error and
stop processing the remaining tasks.
In the past, we used to ignore such format-paths and continue processing
the rest of the tasks ([see code][1]). This was changed to a hard
failure in 2954d1b5ca. Looking at the code
history, the reason for changing the behavior was an (incorrect)
assumption that the condition could not fail. This assumption failed to
take into account the case where a 3rd-party library has an invalid
format-path in its `package.json`. This is an issue with the library,
but it should not prevent `ngcc` from processing other
packages/entry-points/formats.
This commit fixes this by reporting the task as failed but not throwing
an error, thus allowing `ngcc` to continue processing other tasks.
[1]: https://github.com/angular/angular/blob/3077c9a1f89c5bd75fb96c16e/packages/compiler-cli/ngcc/src/main.ts#L124Fixes#40965
PR Close#40985
Some tools (such as Language Server and ng-packagr) only care about
the processed typings generated by ngcc. Forcing these tools to process
the JavaScript files as well has two disadvantages:
First, unnecessary work is being done, which is time consuming.
But more importantly, it is not always possible to know how the final bundling
tools will want the processed JavaScript to be configured. For example,
the CLI would prefer the `--create-ivy-entry-points` option but this would
break non-CLI build tooling.
This commit adds a new option (`--typings-only` on the command line, and
`typingsOnly` via programmatic API) that instructs ngcc to only render changes
to the typings files for the entry-points that it finds, and not to write any
JavaScript files.
In order to process the typings, a JavaScript format will need to be analysed, but
it will not be rendered to disk. When using this option, it is best to offer ngcc a
wide range of possible JavaScript formats to choose from, and it will use the
first format that it finds. Ideally you would configure it to try the `ES2015` FESM
format first, since this will be the most performant.
Fixes#40969
PR Close#40976
With this change we drop support for zone.js 0.10.x.
This is needed because in version 12 the CLI will only work with `~0.11.4`. See angular/angular-cli#20034.
BREAKING CHANGE:
Minimum supported `zone.js` version is `0.11.4`
PR Close#40823
This commit moves a constant which is affected by a g3 sync patch into a
separate file. This way, changes to the rest of the compiler codebase have
no chance of conflicting with the patched code.
PR Close#40950
This is a pre-requisite for #40360. Given the following template which has a listener
that references a variable from a parent template (`name`):
```
<ng-template let-name="name">
<button (click)="hello(name)"></button>
</ng-template>
```
We generate code that looks that looks like. Note how we access `name` through `ctx`:
```js
function template(rf, ctx) {
if (rf & 1) {
const r0 = ɵɵgetCurrentView();
ɵɵelementStart(0, "button", 2);
ɵɵlistener("click", function() {
ɵɵrestoreView(r0);
const name_r0 = ctx.name; // Note the `ctx.name` access here.
const ctx_r1 = ɵɵnextContext();
return ctx_r1.log(name_r0);
});
ɵɵelementEnd();
}
}
```
This works fine at the moment, because the template context object can't be changed after creation.
The changes in #40360 allow for the object to be changed, which means that the `ctx` reference
inside the listener will be out of date, because it was bound during creation mode.
This PR aims to address the issue by accessing the context inside listeners through the saved
view reference. With the new code, the generated code from above will look as follows:
```js
function template(rf, ctx) {
if (rf & 1) {
const r0 = ɵɵgetCurrentView();
ɵɵelementStart(0, "button", 2);
ɵɵlistener("click", function() {
const restoredCtx = ɵɵrestoreView(r0);
const name_r0 = restoredCtx.name;
const ctx_r1 = ɵɵnextContext();
return ctx_r1.log(name_r0);
});
ɵɵelementEnd();
}
}
```
PR Close#40833
Our approach for handling cyclic imports results in code that is
not easy to tree-shake, so it is not suitable for publishing in a
library.
When compiling in partial compilation mode, we are targeting
such library publication, so we now create a fatal diagnostic
error instead of trying to handle the cyclic import situation.
Closes#40678
PR Close#40782
This commit implements creating of `ɵɵngDeclarePipe()` calls in partial
compilation, and processing of those calls in the linker and JIT compiler.
See #40677
PR Close#40803
This commit causes imports added by ngtsc's `ImportManager` to have their
TypeScript "original node" set to the generated `ts.ImportDeclaration`
statement.
In g3, the tsickle transformer runs after the Angular transformer and post-
processes Angular's compilation output. One of its post-processing tasks is
to transform generated imports and references to imported symbols from the
commonjs module system to the g3 module system. Part of this transformation
involves recognizing modules with specific metadata and altering references
to symbols from those modules accordingly.
Normally, tsickle can rely on TypeScript's binding for an imported symbol to
find its origin module and thus the correct metadata for the symbol. However
the Angular transform generates new synthetic imports which don't have such
binding information. Angular's imports are always namespace imports of the
form:
```
import * as qualifier 'module/specifier';
```
References to such an import are then of the form `qualifier.SymbolName`.
To process such imports properly, tsickle needs to be able to associate the
reference to `qualifier` in the expression `qualifer.SymbolName` with the
`ts.ImportDeclaration` statement that defines it. It expects to do this by
looking at the `ts.getOriginalNode()` for the `qualifier` reference, which
should be the `ts.ImportDeclaration`. This commit changes ngtsc's import
generation mechanism to set the original node on `qualifier` identifiers
according to this expectation.
This commit is not tested in the direct compiler tests, since:
1) there is no observable behavior externally from setting the original node
2) we don't have tests that intercept transformer operations (which could be
used to directly assert against the AST nodes)
3) tsickle's published version does not (yet) contain the g3-specific
transformations which rely on the original node and would thus allow the
behavior to be observed.
Instead, we rely on the g3 testing suite to validate the correctness of this
fix. Breaking this functionality would cause g3 compilation errors for
targets, since tsickle would be unable to transform imports correctly.
PR Close#40711
In 5c547675b1 the `EventEmitter.subscribe`
API was extended with a new signature that allows the emitter's generic
type `T` to flow into the subscribe callback. This new signature removes
the need for the special `_outputHelper` function that used to be
emitted into TCBs when `strictOutputEventTypes`/`strictTemplates` is
enabled.
PR Close#40738
Produces a diagnostic when we cannot resolve a component's external style sheet or external template.
The previous behavior was to throw an exception, which crashed the
Language Service.
fixes angular/vscode-ng-language-service#1079
PR Close#40660
The `AsyncPipe.transform<T>(emitter)` method must infer the `T`
type from the `emitter` parameter. Since we changed the `AsyncPipe`
to expect a `Subscribable<T>` rather than `Observable<T>` the
`EventEmitter.subscribe()` method needs to have a tighter signature.
Otherwise TypeScript struggles to infer the type and ends up making
it `unknown`.
Fixes#40637
PR Close#40644
The `TemplateTypeChecker.overrideComponentTemplate` operation was originally
conceived as a "fast path" for the Language Service to react to a template
change without needing to go through a full incremental compilation step. It
served this purpose until the previous commit, which switches the LS to use
the new resource-only incremental change operation provided by `NgCompiler`.
`overrideComponentTemplate` is now no longer utilized, and is known to have
several hard-to-overcome issues that prevent it from being useful in any
other situations. As such, this commit removes it entirely.
PR Close#40585
Normally the template parsing operation normalizes all template line endings
to '\n' only. This normalization operation causes source mapping errors when
the original template uses '\r\n' line endings.
The compiler already parses templates again to create a "diagnostic"
template AST with accurate source maps, to avoid other parsing issues that
affect source map accuracy. This commit configures this diagnostic parse to
also preserve line endings.
PR Close#40597
If the template parse option `leadingTriviaChars` is configured to
consider whitespace as trivia, any trailing whitespace of an element
would be considered as leading trivia of the subsequent element, such
that its `start` span would start _after_ the whitespace. This means
that the start span cannot be used to mark the end of the current
element, as its trailing whitespace would then be included in its span.
Instead, the full start of the subsequent element should be used.
To harden the tests that for the Ivy parser, the test utility `parseR3`
has been adjusted to use the same configuration for `leadingTriviaChars`
as would be the case in its production counterpart `parseTemplate`. This
uncovered another bug in offset handling of the interpolation parser,
where the absolute offset was computed from the start source span
(which excludes leading trivia) whereas the interpolation expression
would include the leading trivia. As such, the absolute offset now also
uses the full start span.
Fixes#39148
PR Close#40513
This commit adds a new `IncrementalResourceCompilationTicket` which reuses
an existing `NgCompiler` instance and updates it to optimally process
template-only and style-only changes. Performing this update involves both
instructing `DecoratorHandler`s to react to the resource changes, as well as
invalidating `TemplateTypeChecker` state for the component(s) in question.
That way, querying the `TemplateTypeChecker` will trigger new TCB generation
for the changed template(s).
PR Close#40561
To prepare for the optimization of template-only changes, this commit
refactors the `ComponentDecoratorHandler`'s handling of template parsing.
Previously, templates were extracted from the raw decorator metadata and
parsed in a single operation.
To better handle incremental template updates, this commit splits this
operation into a "declaration" step where the template info is extracted
from the decorator metadata, and a "parsing" step where the declared
template is read and parsed. This allows for re-reading and re-parsing of
the declared template at a future point, using the same template declaration
extracted from the decorator.
PR Close#40561
Previously, the incremental flow for NgCompiler was simple: when creating a
new NgCompiler instance, the consumer could pass state from a previous
compilation, which would cause the new compilation to be performed
incrementally. "Local" information about TypeScript files which had not
changed would be passed from the old compilation to the new and reused,
while "global" information would always be recalculated.
However, this flow could be made more efficient in certain cases, such as
when no TypeScript files are changed in a new compilation. In this case,
_all_ information extracted during the first compilation is reusable. Doing
this involves reusing the previous `NgCompiler` instance (the container for
such global information) and updating it, instead of creating a new one for
the next compilation. This approach works cleanly, but complicates the
lifecycle of `NgCompiler`.
To prevent consumers from having to deal with the mechanics of reuse vs
incremental steps of `NgCompiler`, a new `CompilationTicket` mechanism is
added in this commit. Consumers obtain a `CompilationTicket` via one of
several code paths depending on the nature of the incoming compilation, and
use the `CompilationTicket` to obtain an `NgCompiler` instance. This
instance may be a fresh compilation, a new `NgCompiler` for an incremental
compilation, or an existing `NgCompiler` that's been updated to optimally
process a resource-only change. Consumers can use the new `NgCompiler`
without knowledge of its provenance.
PR Close#40561
Previously, we were naïvely checking whether a function name was a partial linker
declaration call by testing the map of linkers with `linkers[name]`. Since
`linkers` was a plain object, it also matched function names like `toString`!
This has been refactored as a `Map` to avoid the problem.
PR Close#40563
This PR adds a way for the language server to retrieve compiler options
diagnostics via `languageService.getCompilerOptionsDiagnostics()`.
This will be used by the language server to show a prompt in the editor if
users don't have `strict` or `fullTemplateTypeCheck` turned on.
Ref https://github.com/angular/vscode-ng-language-service/issues/1053
PR Close#40423
The compliance test runner has various macros that process the
expectation files before actually checking their contents. Among those
macros are i18n helpers, which uses a global message counter to be able
to uniquely identify ICU variables.
Because of the global nature of this message index, it was susceptible
to ordering issues which could result in flaky tests, although it failed
very infrequently.
This commit resets the global message counter before applying the macros.
As a result of this change an expectation file had to be updated; this
is actually a bug fix as said test used to fail if run in isolation (if
`focusTest: true` was set for that particular testcase).
PR Close#40529
When a source-map has an inline source, any source-map linked from
that source should only be loaded if itself is also inline; it should not
attempt to load a source-map from the file-system. Otherwise we can
find ourselves with inadvertent infinite cyclic dependencies.
For example, if a transpiler takes a file (e.g. index.js) and generates
a new file overwriting the original file - capturing the original
source inline in the new source-map (index.js.map) - the source
file loader might read the inline original file (also index.js) and
then try to load the `index.js.map` file from disk - ad infinitum.
Note that the first call to `loadSourceFile()` is special, since you can
pass in the source-file and source-map contents directly as in-memory
strrngs. This is common if the transpiler has just generated these and has
not yet written them to disk.
When the contents are passed into `loadSourceFile()` directly, they are
not treated as "inline" for the purposes described above since there is
no chance of these "in-memory" source and source-map contents being caught
up in a cyclic dependency.
Fixes#40408
PR Close#40435
Because the query now has `flags` which specify the mode, the static query
instruction can now be remove. It is simply normal query with `static` flag.
PR Close#40091
Previous implementation would fire changes `QueryList.changes.subscribe`
whenever the `QueryList` was recomputed. This resulted in artificially
high number of change notifications, as it is possible that recomputing
`QueryList` results in the same list. When the `QueryList` gets recomputed
is an implementation detail and it should not be the thing which determines
how often change event should fire.
This change introduces a new `emitDistinctChangesOnly` option for
`ContentChildren` and `ViewChildren`.
```
export class QueryCompWithStrictChangeEmitParent {
@ContentChildren('foo', {
// This option will become the default in the future
emitDistinctChangesOnly: true,
})
foos!: QueryList<any>;
}
```
PR Close#40091
When using the `NewEntryPointWriter`, we must copy over all files from the
entry-point bundle to the new entry-point. But since we are going to
write out the modified files directly, there is no need to copy those.
This commit skips copying the files that have been modified.
PR Close#40429
When using the `NewEntryPointWriter` we copy unmodified files over to the new
entry-point in addition to writing out the source files that are processed by ngcc.
But we were not copying over associated source-map files for these unmodified
source files, leading to warnings in downstream tooling.
Now we will also copy over source-maps that reside as siblings of unmodified
source files. We have to make sure that the sources of the source-map point
to the correct files, so we also update the `sourceRoot` property of the copied
source-map.
Fixes#40358
PR Close#40429
Report non-template diagnotics when calling `getDiagnotics` function of
the language service we only returned template diagnotics. This change
causes it to return all diagnotics, not just diagnostics from the
template type checker.
PR Close#40331
The `template` and `isInline` fields were previously stored in a nested
object, which was initially done to accommodate for additional template
information to support accurate source maps for external templates. In
the meantime the source mapping has been accomplished in a different
way, and I feel this flattened structure is simpler and smaller so is
preferable over the nested object. This change also makes the `isInline`
property optional with a default value of `false`.
PR Close#40383
The parser has a list of tag definitions that it uses when parsing the template. Each tag has a
`contentType` which tells the parser what kind of content the tag should contain. The problem is
that the browser has two separate `title` tags (`HTMLTitleElement` and `SVGTitleElement`) and each
of them has to have a different `contentType`, otherwise the parser will throw an error further down
the pipeline.
These changes update the tag definitions so that each tag name can have multiple content types
associated with it and the correct one can be returned based on the element's prefix.
Fixes#31503.
PR Close#40259
The decorator downleveling transform patches `ts.EmitResolver.isReferencedAliasDeclaration`
to prevent elision of value imports that occur only in a type-position, which would
inadvertently install the patch repeatedly for each source file in the program.
This could potentially result in a stack overflow when a very large number of files is
present in the program.
This commit fixes the issue by ensuring that the patch is only applied once.
This is also a slight performance improvement, as `isReferencedAliasDeclaration`
is no longer repeatedly calling into all prior installed patch functions.
Fixes#40276
PR Close#40374
Previously, if there were path-mapped entry-points, where one contaied the
string of another - for example `worker-client` and `worker` - then the
base paths were incorrectly computed resulting in the wrong package path
for the longer entry-point. This was because, when searching for a matching
base path, the strings were tested using `startsWith()`, whereas we should
only match if the path was contained in a directory from a file-system
point of view.
Now we not only check whether the target path "starts with" the base path
but then also whether the target path is actually contained in the base path
using `fs.relative()`.
Fixes#40352Fixes#40357
PR Close#40376
This class is refactored to extend the new `NodeJSReadonlyFileSystem`
which itself extends `NodeJSPathManipulation`. These new classes allow
consumers to create file-systems that provide a subset of the full file-system.
PR Close#40281
Now that `ReadonlyFileSystem` and `PathManipulation` interfaces are
available, this commit updates the compiler-cli to use these more
focussed interfaces.
PR Close#40281
This interface now extends `ReadonlyFileSystem` which in turn
extends `PathManipulation`. This means consumers of these
interfaces can be more specific about what is needed, and so
providers do not need to implement unnecessary methods.
PR Close#40281
This commit fixes the Template Type Checker's `getSymbolOfNode` so that
it is able to retrieve a symbol for the `BoundEvent` of a two-way
binding. Previously, the implementation would locate the node in the TCB
for the input because it appeared first and shares the same `keySpan` as
the event binding. To fix this, the TCB node search now verifies that
the located node matches the expected name for the output subscription:
either `addEventListener` for a native listener or the class member of the Angular `@Output`
in the case of an Angular output, as would be the case for two-way
bindings.
PR Close#40185
Currently when analyzing the metadata of a directive, we bundle together the bindings from `host`
and the `HostBinding` and `HostListener` together. This can become a problem later on in the
compilation pipeline, because we try to evaluate the value of the binding, causing something like
`@HostBinding('class.foo') public true = 1;` to be treated the same as
`host: {'[class.foo]': 'true'}`.
While looking into the issue, I noticed another one that is closely related: we weren't treating
quoted property names correctly. E.g. `@HostBinding('class.foo') public "foo-bar" = 1;` was being
interpreted as `classProp('foo', ctx.foo - ctx.bar)` due to the same issue where property names
were being evaluated.
These changes resolve both of the issues by treating all `HostBinding` instance as if they're
reading the property from `this`. E.g. the `@HostBinding('class.foo') public true = 1;` from above
is now being treated as `host: {'[class.foo]': 'this.true'}` which further down the pipeline becomes
`classProp('foo', ctx.true)`. This doesn't have any payload size implications for existing code,
because we've always been prefixing implicit property reads with `ctx.`. If the property doesn't
have an identifier that can be read using dotted access, we convert it to a quoted one (e.g.
`classProp('foo', ctx['is-foo']))`.
Fixes#40220.
Fixes#40230.
Fixes#18698.
PR Close#40233
This commit changes the `PartialComponentLinker` to use the original source
of an external template when compiling, if available, to ensure that the
source-mapping of the final linked code is accurate.
If the linker is given a file-system and logger, then it will attempt
to compute the original source of external templates so that the final
linked code references the correct template source.
PR Close#40237
Now, if a source-mapping compliance test fails, the message displays both
the path to the generated file, and more helpfully the path to the expected
file.
PR Close#40237
Previously the names of the source and expectation files were often reused,
which caused potential confusion.
There is now a single source file for
each test-case, which is important when they are being compiled with different
compiler options, since the GOLDEN_PARTIAL file will only contain one copy
per file name.
The names of the expectation files have now been changed so that is clearer
which test-case they are related to.
PR Close#40237
The filename of the source-span is now added to the Babel location
when setting the source-map range in the `BabelAstHost`.
Note that the filename is only added if it is different to the main file
being processed. Otherwise Babel will generate two entries in its
generated source-map.
PR Close#40237
When a source-map/source-file tree has nodes that refer to the same file, the
flattened source-map rendering was those files multiple times, rather than
consolidating them into a single source-map source.
PR Close#40237
When partially compiling a component with an external template, we must
synthesize a new AST node for the string literal that holds the contents of
the external template, since we want to source-map this expression directly
back to the original external template file.
PR Close#40237
This commit ensures that the template type checker returns symbols for
all outputs if a template output listener binds to more than one.
PR Close#40144
When resolving references, the Ivy compiler has a few strategies it could use.
For relative path, one of strategies is [`RelativePathStrategy`](
https://github.com/angular/angular/blob/master/packages/compiler-cli/src/
ngtsc/imports/README.md#relativepathstrategy). This strategy
relies on `compilerOptions.rootDir` and `compilerOptions.rootDirs` to perform
the resolution, but language service only passes `rootDirs` to the compiler,
and not `rootDir`.
In reality, `rootDir` is very different from `rootDirs` even though they
sound the same.
According to the official [TS documentation][1],
> `rootDir` specifies the root directory of input files. Only use to control
> the output directory structure with --outDir.
> `rootDirs` is a list of root folders whose combined content represent the
> structure of the project at runtime. See [Module Resolution documentation](
> https://www.typescriptlang.org/docs/handbook/
> module-resolution.html#virtual-directories-with-rootdirs)
> for more details.
For now, we keep the behavior between compiler and language service consistent,
but we will revisit the notion of `rootDir` and how it is used later.
Fixangular/vscode-ng-language-service#1039
[1]: https://www.typescriptlang.org/docs/handbook/compiler-options.html
PR Close#40243
The `ɵɵngDeclareComponent` calls are designed to be translated to fully
AOT compiled code during a build transform, but in cases this is not
done it is still possible to compile the declaration object in the
browser using the JIT compiler. This commit adds a runtime
implementation of `ɵɵngDeclareComponent` which invokes the JIT compiler
using the declaration object, such that a compiled component definition
is made available to the Ivy runtime.
PR Close#40127
The link to the "speeding-up-ngcc-compilation" URL does not exist,
it was removed shortly after it was added, but the link in the ngcc
error message was not updated.
Fixes#39837
PR Close#40285
The trustConstantHtml and trustConstantResourceUrl functions are only
meant to be passed constant strings extracted from Angular application
templates, as passing other strings or variables could introduce XSS
vulnerabilities.
To better protect these APIs, turn them into template tags. This makes
it possible to assert that the associated template literals do not
contain any interpolation, and thus must be constant.
Also add tests for the change to prevent regression.
PR Close#40082
Given the template
`<div (click)="doSomething($event)"></div>`
If you request references for the `$event`, the results include both `$event` and `(click)="doSomething($event)"`.
This happens because in the TCB, `$event` is passed to the `subscribe`/`addEventListener`
function as an argument. So when we ask typescript to give us the references, we
get the result from the usage in the subscribe body as well as the one passed in as an argument.
This commit adds an identifier to the `$event` parameter in the TCB so
that the result returned from `getReferencesAtPosition` can be
identified and filtered out.
fixes#40157
PR Close#40158
The linker is implemented using a Babel transform such that Babel needs
to parse and walk a source file to find the declarations that need to be
compiled. If it can be determined that a source file is known not to
contain any declarations the parsing and walking can be skipped as a
performance improvement. This commit adds an exposed function for tools
that integrate the linker to use to allow short-circuiting of the linker
transform.
PR Close#40137
Previously `\r\n` was being treated as a single character in source-map
line start positions, which caused segment positions to become offset.
Now the `\r` is ignored when splitting, leaving it at the end of the
previous line, which solves the offsetting problem, and does not affect
source-mappings.
Fixes#40169Fixes#39654
PR Close#40187
The linker entry-points were not previously exposed in the NPM Bazel
target so they were omitted from the bundle. This commit adds the
necessary entry-points to the compiler-cli's npm_package target.
PR Close#40180
The types of directives and pipes that are used in a component's
template may be emitted into the partial declaration wrapped inside a
closure, which is needed when the type is declared later in the module.
This poses a problem for JIT compilation of partial declarations, as
this closure is indistinguishable from a class reference itself. To mark
the forward reference function as such, this commit changes the partial
declaration codegen to emit a `forwardRef` invocation wrapped around
the closure, which ensures that the closure is properly tagged as a
forward reference. This allows the forward reference to be treated as
such during JIT compilation.
PR Close#40117
Currently when `ɵɵtemplate` and `ɵɵelement` instructions are generated by compiler, all static attributes are
duplicated for both instructions. As a part of this duplication, i18n translation blocks for static i18n attributes
are generated twice as well, causing duplicate entries in extracted translation files (when Ivy extraction mechanisms
are used). This commit fixes this issue by introducing a cache for i18n translation blocks (for static attributes
only).
Also this commit further aligns `ɵɵtemplate` and `ɵɵelement` instruction attributes, which should help implement
more effective attributes deduplication logic.
Closes#39942.
PR Close#40077
Durring analysis we find template parse errors. This commit changes
where the type checking context stores the parse errors. Previously, we
stored them on the AnalysisOutput this commit changes the errors to be
stored on the TemplateData (which is a property on the shim). That way,
the template parse errors can be grouped by template.
Previously, if a template had a parse error, we poisoned the module and
would not procede to find typecheck errors. This change does not poison
modules whose template have typecheck errors, so that ngtsc can emit
typecheck errors for templates with parse errors.
Additionally, all template diagnostics are produced in the same place.
This allows requesting just the template template diagnostics or just
other types of errors.
PR Close#40026
Refactors the i18n error tests to be unit tests in ngtsc_spec.ts. There
is two reasons for doing this.
First is that the tests in compliace_old expected an expection to be be
thrown but did not fail the test if no exception was thrown. That means
that this test could miss catching a bug. It is also a big hacky to call
compile directly and expect an exception to be thrown for diagnostics.
Also, this can easily be unit tested and an end-to-end test is not
necessary since we are not making use of the goldfiles for these tests.
It is easier to maintain and less hacky to validate that we get helpful
error messages when nesting i18n sections by calling getDiagnostics
directly.
PR Close#40026
This commit temporarily excludes classes declared in .d.ts files from checks
regarding whether providers are actually injectable.
Such classes used to be ignored (on accident) because the
`TypeScriptReflectionHost.getConstructorParameters()` method did not return
constructor parameters from d.ts files, mostly as an oversight. This was
recently fixed, but caused more providers to be exposed to this check, which
created a breakage in g3.
This commit temporarily fixes the breakage by continuing to exclude such
providers from the check, until g3 can be patched.
PR Close#40118
This commit introduces an `isStructural` flag on directive metadata, which
is `true` if the directive injects `TemplateRef` (and thus is at least
theoretically usable as a structural directive). The flag is not used for
anything currently, but will be utilized by the Language Service to offer
better autocompletion results for structural directives.
PR Close#40032
This commit adds two new APIs to the `TemplateTypeChecker`:
`getPotentialDomBindings` and `getDirectiveMetadata`. Together, these will
support the Language Service in performing autocompletion of directive
inputs/outputs.
PR Close#40032
The `annotations` package in the compiler previously contained a registry
which tracks NgModule scopes for template type-checking, including unifying
all type-checking metadata across class inheritance lines.
This commit generalizes this utility and prepares it for use in the
`TemplateTypeChecker` as well, to back APIs used by the language service.
PR Close#40032
This commit expands the autocompletion capabilities of the language service
to include element tag names. It presents both DOM elements from the Angular
DOM schema as well as any components (or directives with element selectors)
that are in scope within the template as options for completion.
PR Close#40032
This commit replaces `bazel` with `yarn bazel` in the error message (that instructs to regenerate golden file)
thrown while executing compliance tests. We use `yarn bazel` in other places (so we use the local version of bazel,
not the global one).
PR Close#40078
When `checkTypeOfPipes` is set to `false`, the configuration is meant to
ignore the signature of the pipe's `transform` method for diagnostics.
However, we still should produce some information about the pipe for the
`TemplateTypeChecker`. This change refactors the returned symbol for
pipes so that it also includes information about the pipe's class
instance as it appears in the TCB.
PR Close#39555
The TCB utility functions used to find nodes in the TCB are currently
configured to ignore results when an ignore marker is found. However,
these ignore markers are only meant to affect diagnostics requests. The
Language Service may have a need to find nodes with diagnostic ignore
markers. The most common example of this would be finding references for
generic directives. The reference appears to the generic directive's
class appears on the type ctor in the TCB, which is ignored for
diagnostic purposes.
These functions should only skip results when the request is in the
context of a larger request for _diagnostics_. In all other cases, we
should get matches, even if a diagnostic ignore marker is encountered.
PR Close#40071
The ignore marker is only used to ignore certain nodes in the TCB for
the purposes of diagnostics. The marker itself has been renamed as well
as the helper function to see if the marker is present. Both now
indicate that the marker is specifically for diagnostics.
PR Close#40071
Prior to this change, the `setClassMetadata` call would be invoked
inside of an IIFE that was marked as pure. This allows the call to be
tree-shaken away in production builds, as the `setClassMetadata` call
is only present to make the original class metadata available to the
testing infrastructure. The pure marker is problematic, though, as the
`setClassMetadata` call does in fact have the side-effect of assigning
the metadata into class properties. This has worked under the assumption
that only build optimization tools perform tree-shaking, however modern
bundlers are also able to elide calls that have been marked pure so this
assumption does no longer hold. Instead, an `ngDevMode` guard is used
which still allows the call to be elided but only by tooling that is
configured to consider `ngDevMode` as constant `false` value.
PR Close#39987
This commit adds support to the Language Service for autocompletion within
expression contexts. Specifically, this is auto completion of property reads
and method calls, both in normal and safe-navigational forms.
PR Close#39727
When `checkTypeOfOutputEvents` is `false`, we still need to produce the access
to the `EventEmitter` so the Language Service can still get the
type information about the field. That is, in a template `<div
(output)="handle($event)"`, we still want to be able to grab information
when the cursor is inside the "output" parens. The flag is intended only
to affect whether the compiler produces diagnostics for the inferred
type of the `$event`.
PR Close#39515
PR #39665 added the `keySpan` to the output field access so we no longer
need to get there from the call expression and can instead just find the
node we want directly.
PR Close#39515
These tests started failing because they had type-check
errors in their templates, and a recent commit turned on
full template type-checking by default.\
This commit fixes those templates and updates the expected
files as necessary.
PR Close#40040
These tests do not pass the typecheck phase of the compiler and fail.
The option to disable typechecking was removed recently so these tests
need to be fixed to be valid applications.
PR Close#40033
A couple reasons to justify removing the flag:
* It adds code to the compiler that is only meant to support test cases
and not any production. We should avoid code in that's only
meant to support tests.
* The flag enables writing tests that do not mimic real-world behavior
because they allow invalid applications
PR Close#40013
Rather than returning `null`, we can provide some useful information to the Language Service
by returning a symbol for the `addEventListener` function call when the consumer
of a binding as an element.
PR Close#39312
The prior usage of a ternary expression caused the code to be formatted
in a weird way, so this commit replaces the ternary with an `if` statement.
PR Close#39961
Prior to this change the interpolation config value was cast to
`[string, string]` without checking whether there really were two
string values available. This commit extracts the logic of parsing the
interpolation config into a separate function and adds a check that
the array contains exactly two strings.
PR Close#39961
This change allows the `AstObject` and `AstValue` types to provide
their represented type as a generic type argument, which is helpful
for documentation and discoverability purposes.
PR Close#39961
When the compiler option `checkTypeOfAttributes` is `false`, we should
still be able to produce type information from the
`TemplateTypeChecker`. The current behavior ignores all attributes that
map to directive inputs. This commit includes those attribute bindings
in the TCB but adds the "ignore for diagnostics" marker so they do not
produce errors. This way, consumers of the TTC (the Language Service)
can still get valid information about these attributes even when the
user has configured the compiler to not produce diagnostics/errors for them.
PR Close#39537
The golden files for the partial compliance tests need to be updated
with individual Bazel run invocations, which is not very ergonomic when
a large number of golden files need to updated. This commit adds a
script to query the Bazel targets that update the goldens and then runs
those targets sequentially.
PR Close#39989
This test migrates source-mapping tests to the new compliance test framework.
The original tests are found in the file at:
`packages/compiler-cli/test/ngtsc/template_mapping_spec.ts`.
These new tests also check the mappings resulting from partial compilation
followed by linking, after flattening the pair of source-maps that each
process generates.
Note that there are some differences between the mappings for full compile
and linked compile modes, due to how TypeScript and Babel use source-span
information on AST nodes. To accommodate this, there are two expectation
files for most of these source files.
PR Close#39939
This commit allows compliance test-cases to be written that specify
source-map mappings between the source and generated code.
To check a mapping, add a `// SOURCE:` comment to the end of a line:
```
<generated code> // SOURCE: "<source-url>" <source code>
```
The generated code will still be checked, stripped of the `// SOURCE` comment,
as normal by the `expectEmit()` helper.
In addition, the source-map segments are checked to ensure that there is a
mapping from `<generated code>` to `<source code>` found in the file at
`<source-url>`.
Note:
* The source-url should be absolute, with the directory containing the
TEST_CASES.json file assumed to be `/`.
* Whitespace is important and will be included when comparing the segments.
* There is a single space character between each part of the line.
* Newlines within a mapping must be escaped since the mapping and comment
must all appear on a single line of this file.
PR Close#39939
Previously one could set a flag in a `TEST_CASES.json` file to exclude
the test-cases from being run if the input files were being compiled
partially and then linked.
There are also scenarios where one might want to exclude test-cases
from "full compile" mode test runs.
This commit changes the compliance test tooling to support a new
property `compilationModeFilter`, which is an array containing one or
more of `"full compile"` and `"linked compile"`. Only the tests
whose `compilationModeFilter` array contains the current compilation
mode will be run.
PR Close#39939
Previously files were serialized with an extra newline seperator that
was not removed when parsing. This caused the parsed file to start with
an extra newline that invalidated its source-map.
Also, the splitting was producing an empty entry at the start of the extracted
golden files which is now ignored.
PR Close#39939
The schema accidentally included the `expectedErrors` and `extraCheck`
properties below the `files` property instead of below the `expectations`
property.
PR Close#39939
Add a TaggedTemplateExpr to represent tagged template literals in
Angular's syntax tree (more specifically Expression in output_ast.ts).
Also update classes that implement ExpressionVisitor to add support for
tagged template literals in different contexts, such as JIT compilation
and conversion to JS.
Partial support for tagged template literals had already been
implemented to support the $localize tag used by Angular's i18n
framework. Where applicable, this code was refactored to support
arbitrary tags, although completely replacing the i18n-specific support
for the $localize tag with the new generic support for tagged template
literals may not be completely trivial, and is left as future work.
PR Close#39122
Add test for when `checkTypeOfDomReferences = false` to ensure that we
do not regress in behavior at any point. The desired behavior for this
case is that the `TemplateTypeChecker` will honor the user's
configuration and not produce symbols for the dom reference.
PR Close#39539
The partial compiler will add a version number to the objects that are
generated so that the linker can select the appropriate partial linker
class to process the metadata.
Previously this version matching was a simple number check. Now
the partial compilation writes the current Angular compiler version
into the generated metadata, and semantic version ranges are used
to select the appropriate partial linker.
PR Close#39847
This commit adds support in the Ivy Language Service for autocompletion in a
global context - e.g. a {{foo|}} completion.
Support is added both for the primary function `getCompletionsAtPosition` as
well as the detail functions `getCompletionEntryDetails` and
`getCompletionEntrySymbol`. These latter operations are not used yet as an
upstream change to the extension is required to advertise and support this
capability.
PR Close#39250
The newly built compliance test runner was not using the shared source
file cache that was added in b627f7f02e,
which offers a significant performance boost to the compliance test
targets.
PR Close#39956
When the compiler is invoked via ngc or the Angular CLI, its APIs are used
under the assumption that Angular analysis/diagnostics are only requested if
the program has no TypeScript-level errors. A result of this assumption is
that the incremental engine has not needed to resolve changes via its
dependency graph when the program contained broken imports, since broken
imports are a TypeScript error.
The Angular Language Service for Ivy is using the compiler as a backend, and
exercising its incremental compilation APIs without enforcing this
assumption. As a result, the Language Service has run into issues where
broken imports cause incremental compilation to fail and produce incorrect
results.
This commit introduces a mechanism within the compiler to keep track of
files for which dependency analysis has failed, and to always treat such
files as potentially affected by future incremental steps. This is tested
via the Language Service infrastructure to ensure that the compiler is doing
the right thing in the case of invalid imports.
PR Close#39923
Previously, if a component had an external template with a hard error, the
compiler would "forget" the link between that component and its NgModule.
Additionally, the NgModule would be marked as being in error, because the
template issue would prevent the compiler from registering the component
class as a component, so from the NgModule it would look like a declaration
of a non-directive/pipe class. As a combined result, the next incremental
step could fix the template error, but would not refresh diagnostics for the
NgModule, leading to an incrementality issue.
The various facets of this problem were fixed in prior commits. This commit
adds a test verifying the above case works now as expected.
PR Close#39923
To avoid overwhelming a user with secondary diagnostics that derive from a
"root cause" error, the compiler has the notion of a "poisoned" NgModule.
An NgModule becomes poisoned when its declaration contains semantic errors:
declarations which are not components or pipes, imports which are not other
NgModules, etc. An NgModule also becomes poisoned if it imports or exports
another poisoned NgModule.
Previously, the compiler tracked this poisoned status as an alternate state
for each scope. Either a correct scope could be produced, or the entire
scope would be set to a sentinel error value. This meant that the compiler
would not track any information about a scope that was determined to be in
error.
This method presents several issues:
1. The compiler is unable to support the language service and return results
when a component or its module scope is poisoned.
This is fine for compilation, since diagnostics will be produced showing the
error(s), but the language service needs to still work for incorrect code.
2. `getComponentScopes()` does not return components with a poisoned scope,
which interferes with resource tracking of incremental builds.
If the component isn't included in that list, then the NgModule for it will
not have its dependencies properly tracked, and this can cause future
incremental build steps to produce incorrect results.
This commit changes the tracking of poisoned module scopes to use a flag on
the scope itself, rather than a sentinel value that replaces the scope. This
means that the scope itself will still be tracked, even if it contains
semantic errors. A test is added to the language service which verifies that
poisoned scopes can still be used in template type-checking.
PR Close#39923
Previously, if a trait's analysis step resulted in diagnostics, the trait
would be considered "errored" and no further operations, including register,
would be performed. Effectively, this meant that the compiler would pretend
the class in question was actually undecorated.
However, this behavior is problematic for several reasons:
1. It leads to inaccurate diagnostics being reported downstream.
For example, if a component is put into the error state, for example due to
a template error, the NgModule which declares the component would produce a
diagnostic claiming that the declaration is neither a directive nor a pipe.
This happened because the compiler wouldn't register() the component trait,
so the component would not be recorded as actually being a directive.
2. It can cause incorrect behavior on incremental builds.
This bug is more complex, but the general issue is that if the compiler
fails to associate a component and its module, then incremental builds will
not correctly re-analyze the module when the component's template changes.
Failing to register the component as such is one link in the larger chain of
issues that result in these kinds of issues.
3. It lumps together diagnostics produced during analysis and resolve steps.
This is not causing issues currently as the dependency graph ensures the
right classes are re-analyzed when needed, instead of showing stale
diagnostics. However, the dependency graph was not intended to serve this
role, and could potentially be optimized in ways that would break this
functionality.
This commit removes the concept of an "errored" trait entirely from the
trait system. Instead, analyzed and resolved traits have corresponding (and
separate) diagnostics, in addition to potentially `null` analysis results.
Analysis (but not resolution) diagnostics are carried forward during
incremental build operations. Compilation (emit) is only performed when
a trait reaches the resolved state with no diagnostics.
This change is functionally different than before as the `register` step is
now performed even in the presence of analysis errors, as long as analysis
results are also produced. This fixes problem 1 above, and is part of the
larger solution to problem 2.
PR Close#39923
If the testcase has not specified that errors were expected, then any
errors that have occurred should be reported. These errors may have
prevented an output file from being generated, which resulted in hard
to debug test failures due to missing files.
PR Close#39862
The Language Service "find references" currently uses the
`ngtypecheck.ts` suffix to determine if a file is a shim file. Instead,
a better API would be to expose a method in the template type checker
that does this verification so that the LS does not have to "know" about
the typecheck suffix. This also fixes an issue (albeit unlikely) whereby a file
in the user's program that _actually_ is named with the `ngtypecheck.ts`
suffix would have been interpreted as a shim file.
PR Close#39768
This commit adds "find references" functionality to the Ivy integrated
language service. The basic approach is as follows:
1. Generate shims for all files to ensure we find references in shims
throughout the entire program
2. Determine if the position for the reference request is within a
template.
* Yes, it is in a template: Find which node in the template AST the
position refers to. Then find the position in the shim file for that
template node. Pass the shim file and position in the shim file along
to step 3.
* No, the request for references was made outside a template: Forward
the file and position to step 3.
3. (`getReferencesAtTypescriptPosition`): Call the native TypeScript LS
`getReferencesAtPosition`. For each reference that is in a shim file, map those
back to a template location, otherwise return it as-is.
PR Close#39768
There were two issues with the current TCB:
1. The logic for only wrapping the right hand side of the property write
if it was not already a parenthesized expression was incorrect. A
parenthesized expression could still have a trailing comment, and if
that were the case, that span comment would still be ambiguous, as explained
by the comment in the code before `wrapForTypeChecker`.
2. The right hand side of keyed writes was not wrapped in parens at all
PR Close#39768
In order to map the a safe property read's method access in the type check block
directly back to the property in the template source, we need to
include the `SafePropertyRead`'s `nameSpan` with the `ts.propertyAccess` for
the pipe's transform method.
Note that this is specifically relevant to the Language Service's "find
references" feature. As an example, with something like `{{a?.value}}`,
when calling "find references" on the 'value' we want the text
span of the reference to just be `value` rather than the entire source
`a?.value`.
PR Close#39768
In order to map the pipe's `transform` method in the type check block
directly back to the pipe name in the template source, we need to
include the `BindingPipe`'s `nameSpan` with the `ts.methodAccess` for
the pipe's transform method.
Note that this is specifically relevant to the Language Service's "find
references" feature. As an example, with something like `-2.5 | number:'1.0-0'`,,
when calling "find references" on the 'number' pipe we want the text
span of the reference to just be `number` rather than the entire binding
pipe's source `-2.5 | number:'1.0-0'`.
PR Close#39768
Previously this would have just printed that `false` was not equal to
`true`, which, although true, is not very helpful. This commit adds
details about which special check failed together with the generated
code, for easier debugging.
PR Close#39863
This commit provides the machinery for the new file-based compliance test
approach for i18n tests, and migrates the i18n tests to this new format.
PR Close#39661
This commit implements partial compilation of components, together with
linking the partial declaration into its full AOT output.
This commit does not yet enable accurate source maps into external
templates. This requires additional work to account for escape sequences
which is non-trivial. Inline templates that were represented using a
string or template literal are transplated into the partial declaration
output, so their source maps should be accurate. Note, however, that
the accuracy of source maps is not currently verified in tests; this is
also left as future work.
The golden files of partial compilation output have been updated to
reflect the generated code for components. Please note that the current
output should not yet be considered stable.
PR Close#39707
In production mode this flag defaults to `true`, but the compliance
tests override this to `false` unless it is provided. As such, the
linker should also adhere to this default as otherwise the compilation
output would not align with the output of the full tests.
There are still tests that exercise the value of this flag, together
with it being `undefined` to verify the behavior of the actual default
value.
PR Close#39707
The linker does not currently support outputting ES5 syntax, so any
compliance tests that request ES5 output cannot be run in partial
compilation mode. This commit marks these tests as pending.
PR Close#39707
This commit adds the `i18nUseExternalIds` option to the linker options,
as the compliance tests exercise compilation results with and without
this flag enabled. We therefore need to configure the linker to take
this option into account, as otherwise the compliance test output would
not be identical.
Additionally, this commit switches away from spread syntax to set
the default options. This introduced a problem when the user-provided
options object did specify the keys, but with an undefined value. This
would have prevented the default options from being applied.
PR Close#39707
The metadata specification of queries allows for the boolean properties
`first`, `descendants` and `static` to be missing, but the linker did
not account for their omission.
This fix is tested in subsequent commits that implement compilation of
components, at which point this will be covered by the compliance tests.
PR Close#39707
The compilation result of components may have inserted template
functions into the constant pool, which would be inserted into the Babel
AST upon program exit. Babel will then proceed with visiting this newly
inserted subtree, but we have already cleaned up the linker instance
when exiting the program. Any call expressions within the template
functions would then fail to be processed, as a file linker would no
longer be available.
Since the inserted AST subtree is known not to contain yet more partial
declarations, it is safe to skip visiting call expressions when no
file linker is available.
PR Close#39707
The type checker had to do extensive work in resolving the
`NodePath.get` method call for the `NodePath` that had an intersection
type of `ts.VariableDeclarator&{init:t.Expression}`. The `NodePath.get`
method is typed using a conditional type which became expensive to
compute with this intersection type. As a workaround, the original
`init` property is explicitly omitted which avoids the performance
cliff. This brings down the compile time by 15s.
PR Close#39707
The JSON schema reference was off-by-one, preventing IDEs from finding
the file and offering suggestions and documentation. Additionally the
name of the golden file was slightly off.
PR Close#39707
If a template declares a reference to a missing target then referring to
that reference from elsewhere in the template would crash the template
type checker, due to a regression introduced in #38618. This commit
fixes the crash by ensuring that the invalid reference will resolve to
a variable of type any.
Fixes#39744
PR Close#39805
When the `preserveWhitespaces` is not true, the template parser will
process the parsed AST nodes to remove excess whitespace. Since the
generated `goog.getMsg()` statements rely upon the AST nodes after
this whitespace is removed, the i18n extraction must make a second pass.
Previously this resulted in innacurrate source-spans for the i18n text and
placeholder nodes that were extracted in the second pass.
This commit fixes this by reusing the source-spans from the first pass
when extracting the nodes in the second pass.
Fixes#39671
PR Close#39717
Consumers of the `TemplateTypeChecker` API could be interested in
mapping from a shim location back to the original source location in the
template. One concrete example of this use-case is for the "find
references" action in the Language Service. This will return locations
in the TypeScript shim file, and we will then need to be able to map the
result back to the template.
PR Close#39715
Both `ReferenceSymbol` and `VariableSymbol` have two locations of
interest to an external consumer.
1. The location for the initializers of the local TCB variables allow consumers
to query the TypeScript Language Service for information about the initialized type of the variable.
2. The location of the local variable itself (i.e. `_t1`) allows
consumers to query the TypeScript LS for references to that variable
from within the template.
PR Close#39715
The 15.x versions of `yargs` relied upon a version of `y18n` that
has a SNYK vulnerability.
This commit updates the overall project, and therefore also the
`localize` and `compiler-cli` packages to use the latest version
of `yargs` that does not depend upon the vulnerable `y18n`
version.
The AIO project was already on the latest `yargs` version and so
does not need upgrading.
Fixes#39743
PR Close#39749
Currently `readConfiguration` relies on the file system to perform disk
utilities needed to read determine a project configuration file and read
it. This poses a challenge for the language service, which would like to
use `readConfiguration` to watch and read configurations dependent on
extended tsconfigs (#39134). Challenges are at least twofold:
1. To test this, the langauge service would need to provide to the
compiler a mock file system.
2. The language service uses file system utilities primarily through
TypeScript's `Project` abstraction. In general this should correspond
to the underlying file system, but it may differ and it is better to
go through one channel when possible.
This patch alleviates the concern by directly providing to the compiler
a "ParseConfigurationHost" with read-only "file system"-like utilties.
For the language service, this host is derived from the project owned by
the language service.
For more discussion see
https://docs.google.com/document/d/1TrbT-m7bqyYZICmZYHjnJ7NG9Vzt5Rd967h43Qx8jw0/edit?usp=sharing
PR Close#39619
ngtsc's testing infrastructure uses a mock version of @angular/core, which
allows tests to run without requiring the real version of core to be built.
This commit adds a mock version of @angular/common as well, as the language
service tests are written to test against common.
Only a handful of directives/pipes from common are currently supported.
PR Close#39594
ngtsc has a robust suite of testing utilities, designed for in-memory
testing of a TypeScript compiler. Previously these utilities lived in the
`test` directory for the compiler-cli package.
This commit moves those utilities to an `ngtsc/testing` package, enabling
them to be depended on separately and opening the door for using them from
the upcoming language server testing infrastructure.
As part of this refactoring, the `fake_core` package (a lightweight API
replacement for @angular/core) is expanded to include functionality needed
for Language Service test use cases.
PR Close#39594
Currently when we encounter an implicit method call (e.g. `{{ foo(1) }}`) and we manage to resolve
its receiver to something within the template, we assume that the method is on the receiver itself
so we generate a type checking code to reflect it. This assumption is true in most cases, but it
breaks down if the call is on an implicit receiver and the receiver itself is being invoked. E.g.
```
<div *ngFor="let fn of functions">{{ fn(1) }}</div>
```
These changes resolve the issue by generating a regular function call if the method call's receiver
is pointing to `$implicit`.
Fixes#39634.
PR Close#39686
In order to more accurately map from a node in the TCB to a template position,
we need to provide more span information in the TCB. These changes are necessary
for the Language Service to map from a TCB node back to a specific
locations in the template for actions like "find references" and
"refactor/rename". After the TS "find references" returns results,
including those in the TCB, we need to map specifically to the matching
key/value spans in the template rather than the entire source span.
This also has the benefit of producing diagnostics which align more
closely with what TypeScript produces.
The following example shows TS code and the diagnostic produced by an invalid assignment to a property:
```
let a: {age: number} = {} as any;
a.age = 'laksjdf';
^^^^^ <-- Type 'string' is not assignable to type 'number'.
```
A corollary to this in a template file would be [age]="'someString'". The diagnostic we currently produce for this is:
```
Type 'number' is not assignable to type 'string'.
1 <app-hello [greeting]="1"></app-hello>
~~~~~~~~~~~~~~
```
Notice that the underlined text includes the entire span.
If we included the keySpan for the assignment to the property,
this diagnostic underline would be more similar to the one produced by TypeScript;
that is, it would only underline “greeting”.
[design/discussion doc]
(https://docs.google.com/document/d/1FtaHdVL805wKe4E6FxVTnVHl38lICoHIjS2nThtRJ6I/edit?usp=sharing)
PR Close#39665
ngtsc will avoid emitting generated imports that would create an import
cycle in the user's program. The main way such imports can arise is when
a component would ordinarily reference its dependencies in its component
definition `directiveDefs` and `pipeDefs`. This requires adding imports,
which run the risk of creating a cycle.
When ngtsc detects that adding such an import would cause this to occur, it
instead falls back on a strategy called "remote scoping", where a side-
effectful call to `setComponentScope` in the component's NgModule file is
used to patch `directiveDefs` and `pipeDefs` onto the component. Since the
NgModule file already imports all of the component's dependencies (to
declare them in the NgModule), this approach does not risk adding a cycle.
It has several large downsides, however:
1. it breaks under `sideEffects: false` logic in bundlers including the CLI
2. it breaks tree-shaking for the given component and its dependencies
See this doc for further details: https://hackmd.io/Odw80D0pR6yfsOjg_7XCJg?view
In particular, the impact on tree-shaking was exacerbated by the naive logic
ngtsc used to employ here. When this feature was implemented, at the time of
generating the side-effectful `setComponentScope` call, the compiler did not
know which of the component's declared dependencies were actually used in
its template. This meant that unlike the generation of `directiveDefs` in
the component definition itself, `setComponentScope` calls had to list the
_entire_ compilation scope of the component's NgModule, including directives
and pipes which were not actually used in the template. This made the tree-
shaking impact much worse, since if the component's NgModule made use of any
shared NgModules (e.g. `CommonModule`), every declaration therein would
become un-treeshakable.
Today, ngtsc does have the information on which directives/pipes are
actually used in the template, but this was not being used during the remote
scoping operation. This commit modifies remote scoping to take advantage of
the extra context and only list used dependencies in `setComponentScope`
calls, which should ameliorate the tree-shaking impact somewhat.
PR Close#39662
This commit adds bazel rules to test whether linking the golden partial
files for test cases produces the same output as a full compile of the
test case would.
PR Close#39617
This commit contains the basic runner logic and a couple of sample test cases
for the "full compile" compliance tests, where source files are compiled
to full definitions and checked against expectations.
PR Close#39617
This commit renames the original `compliance` test directory to `compliance_old`.
Eventually this directory will be deleted once all the tests have been
migrated to the new test case based compliance tests.
PR Close#39617
The resource loader uses TypeScript's module resolution system to
determine at which locations it needs to look for a resource file. A
marker string is used to force the module resolution to fail, such that
all failed lookup locations can then be considered for actual resource
resolution. Any filesystem requests targeting files/directories that
contain the marker are known not to exist, so no filesystem request
needs to be done at all.
PR Close#39604
The type alias allows for this pattern to be more easily used in other
areas of the compiler code. The current usages of this pattern have been
updated to use the type alias.
PR Close#39604
TCB generation occasionally transforms binding expressions twice, which can
result in a `BindingPipe` operation being `resolve()`'d multiple times. When
the pipe does not exist, this caused multiple OOB diagnostics to be recorded
about the missing pipe.
This commit fixes the problem by making the OOB recorder track which pipe
expressions have had diagnostics produced already, and only producing them
once per expression.
PR Close#39517
With this change we remove code which was used to support both TypeScript 3.9 and TypeScript 4.0
This code is now no longer needed because G3 is on TypeScript 4.0
PR Close#39586
There is a compiler transform that downlevels Angular class decorators
to static properties so that metadata is available for JIT compilation.
The transform was supposed to ignore non-Angular decorators but it was
actually completely dropping decorators that did not conform to a very
specific syntactic shape (i.e. the decorator was a simple identifier, or
a namespaced identifier).
This commit ensures that all non-Angular decorators are kepts as-is
even if they are built using a syntax that the Angular compiler does not
understand.
Fixes#39574
PR Close#39577
Rather than re-reading component metadata that was already interpreted
by the Ivy compiler, the Language Service should instead use the
compiler APIs to get information it needs about the metadata.
PR Close#39476
For consistency with other generated code, the partial declaration
functions are renamed to use the `ɵɵ` prefix which indicates that it is
generated API.
This commit also removes the declaration from the public API golden
file, as it's not yet considered stable at this point. Once the linker
is finalized will these declaration function be included into the golden
file.
PR Close#39518
This commit implements partial code generation for directives, which
will be transformed by the linker plugin to fully AOT compiled code in
follow-up work.
PR Close#39518
In PR #38938 an additional Bazel target was introduced for the compliance
tests, as preparation to run the compliance tests in partial compilation
mode and then apply the linker transform. The linker plugin itself was
not available at the time but has since been implemented, so this commit
updates the prelink target of the compliance tests to apply the linker
transform using the Babel plugin.
Actually emitting partial compilations to be transformed will be done in
follow-up work.
PR Close#39518
This introduces `AstObject.toMap` as an alternative to `AstObject
.toLiteral`, and adds `AstValue.getSymbolName` to query the symbol name
of a value using the encapsulated AST host.
PR Close#39518
When a class with a custom decorator is transpiled to ES5, it looks something like this:
```
var SomeClass = (function() {
function SomeClass() {...};
var SomeClass_1 = __decorate([Decorator()], SomeClass);
SomeClass = SomeClass_1;
return SomeClass;
})();
```
The problem is that if the class also has an Angular decorator that refers to the class itself
(e.g. `{provide: someToken, useClass: SomeClass}`), the generated `setClassMetadata` code will
be emitted after the IIFE, but will still refer to the intermediate `SomeClass_1` variable from
inside the IIFE. This happens, because we generate the `setClassMetadata` call directly from
the source AST which contains identifiers that TS will rename when it emits the ES5 code.
These changes resolve the issue by looking through the metadata AST and cloning any `Identifier`
that is referring to the class. Since TS doesn't have references to the clone, it won't rename
it when transpiling to ES5.
Fixes#39509.
PR Close#39527
The variable declaration for a template context is only needed when it
is referenced from somewhere, so the TCB operation to generate the
declaration is marked as optional.
PR Close#39321
Currently expressions `$event.foo()` and `this.$event.foo()`, as well as `$any(foo)` and
`this.$any(foo)`, are treated as the same expression by the compiler, because `this` is considered
the same implicit receiver as when the receiver is omitted. This introduces the following issues:
1. Any time something called `$any` is used, it'll be stripped away, leaving only the first parameter.
2. If something called `$event` is used anywhere in a template, it'll be preserved as `$event`,
rather than being rewritten to `ctx.$event`, causing the value to undefined at runtime. This
applies to listener, property and text bindings.
These changes resolve the first issue and part of the second one by preserving anything that
is accessed through `this`, even if it's one of the "special" ones like `$any` or `$event`.
Furthermore, these changes only expose the `$event` global variable inside event listeners,
whereas previously it was available everywhere.
Fixes#30278.
PR Close#39323
The Language Service is not only interested in external resources, but
also inline styles and templates. By storing the expression of the
inline resources, we can more easily determine if a given position is
part of the inline template/style expression.
PR Close#39482
In addition to the template mapping that already existed, we want to also track the mapping for external
style files. We also store the `ts.Expression` in the registry so external tools can look up a resource
on a component by expression and avoid reading the value.
PR Close#39373
adds RuntimeError and code enum to improve debugging experience
refactor ExpressionChangedAfterItHasBeenCheckedError to code NG0100
refactor CyclicDependency to code NG0200
refactor No Provider to code NG0201
refactor MultipleComponentsMatch to code NG0300
refactor ExportNotFound to code NG0301
refactor PipeNotFound to code NG0302
refactor BindingNotKnown to code NG0303
refactor NotKnownElement to code NG0304
PR Close#39188
This reverts commit 561c0f81a0.
The original commit provided a quick escape from an already terminal
situation by killing the process if the PID in the lockfile was not
found in the list of processes running on the current machine.
But this broke use-cases where the node_modules was being shared between
multiple machines (or more commonly Docker containers on the same actual
machine).
Fixes#38875
PR Close#39435
Currently `i18n` attributes are treated the same no matter if they have data bindings or not. This
both generates more code since they have to go through the `ɵɵi18nAttributes` instruction and
prevents the translated attributes from being injected using the `@Attribute` decorator.
These changes makes it so that static translated attributes are treated in the same way as regular
static attributes and all other `i18n` attributes go through the old code path.
Fixes#38231.
PR Close#39408
This commit introduces two new methods to the TemplateTypeChecker, which
retrieve the directives and pipes that are "in scope" for a given component
template. The metadata returned by this API is minimal, but enough to power
autocompletion of selectors and attributes in templates.
PR Close#39278
This commit introduces caching of `Symbol`s produced by the template type-
checking infrastructure, in the same way that autocompletion results are
now cached.
PR Close#39278
This commit refactors the previously introduced `getGlobalCompletions()` API
for the template type-checker in a couple ways:
* The return type is adjusted to use a `Map` instead of an array, and
separate out the component context completion position. This allows for a
cleaner integration in the language service.
* A new `CompletionEngine` class is introduced which powers autocompletion
for a single component, and can cache completion results.
* The `CompletionEngine` for each component is itself cached on the
`TemplateTypeCheckerImpl` and is invalidated when the component template
is overridden or reset.
This refactoring simplifies the `TemplateTypeCheckerImpl` class by
extracting the autocompletion logic, enables caching for better performance,
and prepares for the introduction of other autocompletion APIs.
PR Close#39278
The compiler uses a `Reference` abstraction to refer to TS nodes
that it needs to refer to from other parts of the source. Such
references keep track of any identifiers that represent the referenced
node.
Prior to this commit, the compiler (and specifically `ReferenceEmitter`
classes) assumed that the reference identifiers are always free standing.
In other words a reference identifier would be an expression like
`FooDirective` in the expression `class FooDirective {}`.
But in UMD/CommonJS source, a reference can actually refer to an "exports"
declaration of the form `exports.FooDirective = ...`.
In such cases the `FooDirective` identifier is not free-standing
since it is part of a property access, so the `ReferenceEmitter`
should take this into account when emitting an expression that
refers to such a `Reference`.
This commit changes the `LocalIdentifierStrategy` reference emitter
so that if the `node` being referenced is not a declaration itself and
is in the current file, then it should be used directly, rather than
trying to use one of its identifiers.
PR Close#39346
Previously, UMD/CommonJS class inline declarations of the form:
```ts
exports.Foo = (function() { function Foo(); return Foo; })();
```
were capturing the whole IIFE as the implementation, rather than
the inner class (i.e. `function Foo() {}` in this case). This caused
the interpreter to break when it was trying to access such an export,
since it would try to evaluate the IIFE rather than treating it as a class
declaration.
PR Close#39346
group together similar error messages as part of error code efforts
ProviderNotFound & NodeInjector grouped into throwProviderNotFoundError
Cyclic dependency errors grouped into throwCyclicDependencyError
PR Close#39251
This commit adds the basic building blocks for linking partial declarations.
In particular it provides a generic `FileLinker` class that delegates to
a set of (not yet implemented) `PartialLinker` classes.
The Babel plugin makes use of this `FileLinker` providing concrete classes
for `AstHost` and `AstFactory` that work with Babel AST. It can be created
with the following code:
```ts
const plugin = createEs2015LinkerPlugin({ /* options */ });
```
PR Close#39116
Previously, inline exports of the form `exports.foo = <implementation>;` were
being interpreted (by the ngtsc `PartialInterpeter`) as `Reference` objects.
This is not what is desired since it prevents the value of the export
from being unpacked, such as when analyzing `NgModule` declarations:
```
exports.directives = [Directive1, Directive2];
@NgImport({declarations: [exports.directives]})
class AppModule {}
```
In this example the interpreter would think that `exports.directives`
was a reference rather than an array that needs to be unpacked.
This bug was picked up by the ngcc-validation repository. See
https://github.com/angular/ngcc-validation/pull/1990 and
https://circleci.com/gh/angular/ngcc-validation/17130
PR Close#39267
Some inline declarations are of the form:
```
exports.<name> = <implementation>;
```
In this case the declaration `node` is `exports.<name>`.
When interpreting such inline declarations we actually want
to visit the `implementation` expression rather than visiting
the declaration `node`.
This commit adds `implementation?: ts.Expression` to the
`InlineDeclaration` type and updates the interpreter to visit
these expressions as described above.
PR Close#39267
When ngcc is configured to run with the `--use-program-dependencies`
flag, as is the case in the CLI's asynchronous processing, it will scan
all source files in the program, starting from the program's root files
as configured in the tsconfig. Each individual root file could
potentially rescan files that had already been scanned for an earlier
root file, causing a severe performance penalty if the number of root
files is large. This would be the case if glob patterns are used in the
"include" specification of a tsconfig file.
This commit avoids the performance penalty by keeping track of the files
that have been scanned across all root files, such that no source file
is scanned multiple times.
Fixes#39240
PR Close#39254
Previously the `node.name` property was only checked to ensure it was
defined. But that meant that it was a `ts.BindingName`, which also includes
`ts.BindingPattern`, which we do not support. But these helper methods were
forcefully casting the value to `ts.Identifier.
Now we also check that the `node.name` is actually an `ts.Identifier`.
PR Close#38959
Previously directive "queries" that relied upon a namespaced type
```ts
queries: {
'mcontent': new core.ContentChild('test2'),
}
```
caused an error to be thrown. This is now supported.
PR Close#38959
Previously, any declarations that were defined "inline" were not
recognised by the `UmdReflectionHost`.
For example, the following syntax was completely unrecognized:
```ts
var Foo_1;
exports.Foo = Foo_1 = (function() {
function Foo() {}
return Foo;
})();
exports.Foo = Foo_1 = __decorate(SomeDecorator, Foo);
```
Such inline classes were ignored and not processed by ngcc.
This lack of processing led to failures in Ivy applications that relied
on UMD formats of libraries such as `syncfusion/ej2-angular-ui-components`.
Now all known inline UMD exports are recognized and processed accordingly.
Fixes#38947
PR Close#38959
Previously these tests were checking multiple specific expression
types. The new helper function is more general and will also support
`PropertyAccessExpression` nodes for `InlineDeclaration` types.
PR Close#38959
Previously the `ConcreteDeclaration` and `InlineDeclaration` had
different properties for the underlying node type. And the `InlineDeclaration`
did not store a value that represented its declaration.
It turns out that a natural declaration node for an inline type is the
expression. For example in UMD/CommonJS this would be the `exports.<name>`
property access node.
So this expression is now used for the `node` of `InlineDeclaration` types
and the `expression` property is dropped.
To support this the codebase has been refactored to use a new `DeclarationNode`
type which is a union of `ts.Declaration|ts.Expression` instead of `ts.Declaration`
throughout.
PR Close#38959
This makes these tests more resilient to changes in the test code
structure. For example switching from
```
var SomeClass = <implementation>;
exports.SomeClass = SomeClass;
```
to
```
exports.SomeClass = <implementation>;
```
PR Close#38959
Previously `getDeclaration()` would only return the first node that matched
the name passed in and then assert the predicate on this single node.
It also only considered a subset of possible declaration types that we might
care about.
Now the function will parse the whole tree collecting an array of all the
nodes that match the name. It then filters this array based on the predicate
and only errors if the filtered array is empty.
This makes this function much more resilient to more esoteric code formats
such as UMD.
PR Close#38959
The new function does not try to restrict the kind of AST node that it
finds, leaving that to the caller. This will make it more resuable in the
UMD reflection host.
PR Close#38959
Sometimes UMD exports appear in the following form:
```
exports.MyClass = alias1 = alias2 = <<declaration>>
```
Previously the declaration of the export would have been captured
as `alias1 = alias2 = <<declaration>>`, which the `PartialInterpreter`
would have failed on, since it cannot handle assignments.
Now we skip over these aliases capturing only the `<<declaration>>`
expression.
Fixes#38947
PR Close#38959
UMD files export values by assigning them to an `exports` variable.
When evaluating expressions ngcc was failing to cope with expressions
like `exports.MyComponent`.
This commit fixes the `UmdReflectionHost.getDeclarationOfIdentifier()`
method to map the `exports` variable to the current source file.
PR Close#38959
The `SIMPLE_CLASS_FILE` contained a `ChildClass` that had an
internal aliases implementation and extended a `SuperClass` base
class. The call to `__extends` was using the wrong argument for
the child class.
PR Close#38959
This clarifies that this is specifically about statements of the form
`exports.<name> = <declaration>`, rather than a general export
statement such as `export class <ClassName> { ... }`.
PR Close#38959
There is no need to check that the `ref.node` is of any particular type
because immediately after this check the entry is tested to see if it passes
`isClassDeclarationReference()`.
The only difference is that the error that is reported is slightly different
in the case that it is a `ref` but not one of the TS node types.
Previously:
```
`Value at position ${idx} in the NgModule.${arrayName} of ${
className} is not a reference`
```
now
```
`Value at position ${idx} in the NgModule.${arrayName} of ${
className} is not a class`
```
Arguably the previous message was wrong, since this entry IS a reference
but is not a class.
PR Close#38959
Removes `ViewEncapsulation.Native` which has been deprecated for several major versions.
BREAKING CHANGES:
* `ViewEncapsulation.Native` has been removed. Use `ViewEncapsulation.ShadowDom` instead. Existing
usages will be updated automatically by `ng update`.
PR Close#38882
Expressions within ICU expressions in templates were not previously
type-checked, as they were skipped while traversing the elements
within a template. This commit enables type checking of these
expressions by actually visiting the expressions.
BREAKING CHANGE:
Expressions within ICUs are now type-checked again, fixing a regression
in Ivy. This may cause compilation failures if errors are found in
expressions that appear within an ICU. Please correct these expressions
to resolve the type-check errors.
Fixes#39064
PR Close#39072
Updates to rules_nodejs 2.2.0. This is the first major release in 7 months and includes a number of features as well
as breaking changes.
Release notes: https://github.com/bazelbuild/rules_nodejs/releases/tag/2.0.0
Features of note for angular/angular:
* stdout/stderr/exit code capture; this could be potentially be useful
* TypeScript (ts_project); a simpler tsc rule that ts_library that can be used in the repo where ts_library is too
heavy weight
Breaking changes of note for angular/angular:
* loading custom rules from npm packages: `ts_library` is no longer loaded from `@npm_bazel_typescript//:index.bzl`
(which no longer exists) but is now loaded from `@npm//@bazel/typescript:index.bzl`
* with the loading changes above, `load("@npm//:install_bazel_dependencies.bzl", "install_bazel_dependencies")` is
no longer needed in the WORKSPACE which also means that yarn_install does not need to run unless building/testing
a target that depends on @npm. In angular/angular this is a minor improvement as almost everything depends on @npm.
* @angular/bazel package is also updated in this PR to support the new load location; Angular + Bazel users that
require it for ng_package (ng_module is no longer needed in OSS with Angular 10) will need to load from
`@npm//@angular/bazel:index.bzl`. I investigated if it was possible to maintain backward compatability for the old
load location `@npm_angular_bazel` but it is not since the package itself needs to be updated to load from
`@npm//@bazel/typescript:index.bzl` instead of `@npm_bazel_typescript//:index.bzl` as it depends on ts_library
internals for ng_module.
* runfiles.resolve will now throw instead of returning undefined to match behavior of node require
Other changes in angular/angular:
* integration/bazel has been updated to use both ng_module and ts_libary with use_angular_plugin=true.
The latter is the recommended way for rules_nodejs users to compile Angular 10 with Ivy. Bazel + Angular ViewEngine is
supported with @angular/bazel <= 9.0.5 and Angular <= 8. There is still Angular ViewEngine example on rules_nodejs
https://github.com/bazelbuild/rules_nodejs/tree/stable/examples/angular_view_engine on these older versions but users
that want to update to Angular 10 and are on Bazel must switch to Ivy and at that point ts_library with
use_angular_plugin=true is more performant that ng_module. Angular example in rules_nodejs is configured this way
as well: https://github.com/bazelbuild/rules_nodejs/tree/stable/examples/angular. As an aside, we also have an
example of building Angular 10 with architect() rule directly instead of using ts_library with angular plugin:
https://github.com/bazelbuild/rules_nodejs/tree/stable/examples/angular_bazel_architect.
NB: ng_module is still required for angular/angular repository as it still builds ViewEngine & @angular/bazel
also provides the ng_package rule. ng_module can be removed in the future if ViewEngine is no longer needed in
angular repo.
* JSModuleInfo provider added to ng_module. this is for forward compat for future rules_nodejs versions.
PR Close#39182
Temporarily disable the //packages/compiler-cli/integrationtest:integrationtest
target while continuing to investigate its unknown failures
PR Close#39168
The right needs to be wrapped in parens or we cannot accurately match its
span to just the RHS. For example, the span in `e = $event /*0,10*/` is ambiguous.
It could refer to either the whole binary expression or just the RHS.
We should instead generate `e = ($event /*0,10*/)` so we know the span 0,10 matches RHS.
This is specifically needed for the TemplateTypeChecker/Language Service
when mapping template positions to items in the TCB.
PR Close#39143
This commit introduces a new API for the `TemplateTypeChecker` which allows
for autocompletion in a global expression context (for example, in a new
interpolation expression such as `{{|}}`). This API returns instances of the
type `GlobalCompletion`, which can represent either a completion result from
the template's component context or a declaration such as a local reference
or template variable. The Language Service will use this API to implement
autocompletion within templates.
PR Close#39048
Previously the value passed to `AstFactory.attachComments()` could be
`undefined` which is counterintuitive, since why attach something that
doesn't exist? Now it expects there to be a defined array. Further it no
longer returns a statement. Both these aspects of the interface were designed
to make the usage simpler but has the result of complicating the implemenation.
The `ExpressionTranslatorVisitor` now has a helper function (`attachComments()`)
to handle `leadingComments` being undefined and also returning the statement.
This keeps the usage in the translator simple, while ensuring that the `AstFactory`
API is not influenced by how it is used.
PR Close#39076
This is needed so that the Language Service can provide the module name
in the quick info for a directive/component.
To accomplish this, the compiler's `LocalModuleScope` is provided to the
`TemplateTypeCheckerImpl`. This will also allow the `TemplateTypeChecker` to
provide more completions in the future, giving it a way to determine all the
directives/pipes/etc. available to a template.
PR Close#39099
The compiler maintains an internal dependency graph of all resource
dependencies for application source files. This information can be useful
for tools that integrate the compiler and need to support file watching.
This change adds a `getResourceDependencies` method to the
`NgCompiler` class that allows compiler integrations to access resource
dependencies of files within the compilation.
PR Close#38048
Updates to rules_nodejs 2.2.0. This is the first major release in 7 months and includes a number of features as well
as breaking changes.
Release notes: https://github.com/bazelbuild/rules_nodejs/releases/tag/2.0.0
Features of note for angular/angular:
* stdout/stderr/exit code capture; this could be potentially be useful
* TypeScript (ts_project); a simpler tsc rule that ts_library that can be used in the repo where ts_library is too
heavy weight
Breaking changes of note for angular/angular:
* loading custom rules from npm packages: `ts_library` is no longer loaded from `@npm_bazel_typescript//:index.bzl`
(which no longer exists) but is now loaded from `@npm//@bazel/typescript:index.bzl`
* with the loading changes above, `load("@npm//:install_bazel_dependencies.bzl", "install_bazel_dependencies")` is
no longer needed in the WORKSPACE which also means that yarn_install does not need to run unless building/testing
a target that depends on @npm. In angular/angular this is a minor improvement as almost everything depends on @npm.
* @angular/bazel package is also updated in this PR to support the new load location; Angular + Bazel users that
require it for ng_package (ng_module is no longer needed in OSS with Angular 10) will need to load from
`@npm//@angular/bazel:index.bzl`. I investigated if it was possible to maintain backward compatability for the old
load location `@npm_angular_bazel` but it is not since the package itself needs to be updated to load from
`@npm//@bazel/typescript:index.bzl` instead of `@npm_bazel_typescript//:index.bzl` as it depends on ts_library
internals for ng_module.
* runfiles.resolve will now throw instead of returning undefined to match behavior of node require
Other changes in angular/angular:
* integration/bazel has been updated to use both ng_module and ts_libary with use_angular_plugin=true.
The latter is the recommended way for rules_nodejs users to compile Angular 10 with Ivy. Bazel + Angular ViewEngine is
supported with @angular/bazel <= 9.0.5 and Angular <= 8. There is still Angular ViewEngine example on rules_nodejs
https://github.com/bazelbuild/rules_nodejs/tree/stable/examples/angular_view_engine on these older versions but users
that want to update to Angular 10 and are on Bazel must switch to Ivy and at that point ts_library with
use_angular_plugin=true is more performant that ng_module. Angular example in rules_nodejs is configured this way
as well: https://github.com/bazelbuild/rules_nodejs/tree/stable/examples/angular. As an aside, we also have an
example of building Angular 10 with architect() rule directly instead of using ts_library with angular plugin:
https://github.com/bazelbuild/rules_nodejs/tree/stable/examples/angular_bazel_architect.
NB: ng_module is still required for angular/angular repository as it still builds ViewEngine & @angular/bazel
also provides the ng_package rule. ng_module can be removed in the future if ViewEngine is no longer needed in
angular repo.
* JSModuleInfo provider added to ng_module. this is for forward compat for future rules_nodejs versions.
@josephperrott, this touches `packages/bazel/src/external.bzl` which will make the sync to g3 non-trivial.
PR Close#37727
This commit adds the `AstHost` interface, along with implementations for
both Babel and TS.
It also implements the Babel vesion of the `AstFactory` interface, along
with a linker specific implementation of the `ImportGenerator` interface.
These classes will be used by the new "ng-linker" to transform prelinked
library code using a Babel plugin.
PR Close#38866
The `AstFactory.createFunctionDeclaration()` was allowing `null` to be
passed as the function `name` value. This is not actually possible, since
function declarations must always have a name.
PR Close#38866
The tests were assuming that newlines were `\n` characters but this is not
the case on Windows. This was fixed in #38925, but a better solution is to
configure the TS printer to always use `\n` characters for newlines.
PR Close#38866
These free standing functions rely upon the "current" `FileSystem`,
but it is safer to explicitly pass the `FileSystem` into functions or
classes that need it.
PR Close#39006
To verify the correctness of the linker output, we leverage the existing
compliance tests. The plan is to test the linker by running all compliance
tests using a full round trip of pre-linking and subsequently post-linking,
where the generated code should be identical to a full AOT compile.
This commit adds an additional Bazel target that runs the compliance
tests in partial mode. Follow-up work is required to implement the logic
for running the linker round trip.
PR Close#38938
This is a precursor to introducing the Angular linker. As an initial
step, a compiler option to configure the compilation mode is introduced.
This option is initially internal until the linker is considered ready.
PR Close#38938
* Add `templateNode` to `ElementSymbol` and `TemplateSymbol` so callers
can use the information about the attributes on the
`TmplAstElement`/`TmplAstTemplate` for directive matching
* Remove helper function `getSymbolOfVariableDeclaration` and favor
more specific handling for scenarios. The generic function did not
easily handle different scenarios for all types of variable declarations
in the TCB
PR Close#39047
This commit adds an API to `NgCompiler`, a method called
`getComponentsWithTemplateFile`. Given a filesystem path to an external
template file, it retrieves a `Set` (actually a `ReadonlySet`) of component
declarations which are using this template. In most cases, this will only be
a single component.
This information is easily determined by the compiler during analysis, but
is hard for a lot of Angular tooling (e.g. the language service) to infer
independently. Therefore, it makes sense to expose this as a compiler API.
PR Close#39002
With the introduction of incremental type checking in #36211, an
intermediate `ts.Program` for type checking is only created if there are
any templates to check. This rendered some tests ineffective at avoiding
regressions, as the intermediate `ts.Program` was required for the tests
to fail if the scenario under test would not be accounted for. This
commit adds a single component to these tests, to ensure the
intermediate `ts.Program` is in fact created.
PR Close#39011
Prior to this fix, incremental rebuilds could fail to type check due to
missing ambient types from auto-discovered declaration files in @types
directories, or type roots in general. This was caused by the
intermediary `ts.Program` that is created for template type checking,
for which a `ts.CompilerHost` was used which did not implement the
optional `directoryExists` methods. As a result, auto-discovery of types
would not be working correctly, and this would retain into the
`ts.Program` that would be created for an incremental rebuild.
This commit fixes the issue by forcing the custom `ts.CompilerHost` used
for type checking to properly delegate into the original
`ts.CompilerHost`, even for optional methods. This is accomplished using
a base class `DelegatingCompilerHost` which is typed in such a way that
newly introduced `ts.CompilerHost` methods must be accounted for.
Fixes#38979
PR Close#39011
We weren't resolving a path correctly which resulted in an error on Windows.
For reference, here's the error. Note the extra slash before `C:`:
```
Error: ENOENT: no such file or directory, scandir '/C:/bazel_output_root/yxvwd24o/external/npm/node_modules/typescript'
at Object.readdirSync (fs.js:854:3)
```
PR Close#39005
This commit updates the symbols in the TemplateTypeCheck API and methods
for retrieving them:
* Include `isComponent` and `selector` for directives so callers can determine which
attributes on an element map to the matched directives.
* Add a new `TextAttributeSymbol` and return this when requesting a symbol for a `TextAttribute`.
* When requesting a symbol for `PropertyWrite` and `MethodCall`, use the
`nameSpan` to retrieve symbols.
* Add fix to retrieve generic directives attached to elements/templates.
PR Close#38844
Prior to this change, each invocation of `loadStandardTestFiles` would
load the necessary files from disk. This function is typically called
at the top-level of a test module in order to share the result across
tests. The `//packages/compiler-cli/test/ngtsc` target has 8 modules
where this call occurs, each loading their own copy of
`node_modules/typescript` which is ~60MB in size, so the memory overhead
used to be significant. This commit loads the individual packages into
a standalone `Folder` and mounts this folder into the filesystem of
standard test files, such that all file contents are no longer
duplicated in memory.
PR Close#38909
Some compiler tests take a long time to run, even using multiple
executors. A profiling session revealed that most time is spent in
parsing source files, especially the default libraries are expensive to
parse.
The default library files are constant across all tests, so this commit
introduces a shared cache of parsed source files of the default
libraries. This achieves a significant improvement for several targets
on my machine:
//packages/compiler-cli/test/compliance: from 23s to 5s.
//packages/compiler-cli/test/ngtsc: from 115s to 11s.
Note that the number of shards for the compliance tests has been halved,
as the extra shards no longer provide any speedup.
PR Close#38909
In Ivy, template type-checking has 3 modes: basic, full, and strict. The
primary difference between basic and full modes is that basic mode only
checks the top-level template, whereas full mode descends into nested
templates (embedded views like ngIfs and ngFors). Ivy applies this approach
to all of its template type-checking, including the DOM schema checks which
validate whether an element is a valid component/directive or not.
View Engine has both the basic and the full mode, with the same distinction.
However in View Engine, DOM schema checks happen for the full template even
in the basic mode.
Ivy's behavior here is technically a "fix" as it does not make sense for
some checks to apply to the full template and others only to the top-level
view. However, since g3 relies exclusively on the basic mode of checking and
developers there are used to DOM checks applying throughout their template,
this commit re-enables the nested schema checks even in basic mode only in
g3. This is done by enabling the checks only when Closure Compiler
annotations are requested.
Outside of g3, it's recommended that applications use at least the full mode
of checking (controlled by the `fullTemplateTypeCheck` flag), and ideally
the strict mode (`strictTemplates`).
PR Close#38943
This commit refactors the `ExpressionTranslatorVisitor` so that it
is not tied directly to the TypeScript AST. Instead it uses generic
`TExpression` and `TStatement` types that are then converted
to concrete types by the `TypeScriptAstFactory`.
This paves the way for a `BabelAstFactory` that can be used to
generate Babel AST nodes instead of TypeScript, which will be
part of the new linker tool.
PR Close#38775
Previously each identifier was being imported individually, which made for a
very long import statement, but also obscurred, in the code, which identifiers
came from the compiler.
PR Close#38775
This file contains a number of classes making it long and hard to work with.
This commit splits the `ImportManager`, `Context` and `TypeTranslatorVisitor`
classes, along with associated functions and types into their own files.
PR Close#38775
When the target of the compiler is ES2015 or newer then we should
be generating `let` and `const` variable declarations rather than `var`.
PR Close#38775
The cast to `ts.Identifier` was a hack that "just happened to work".
The new approach is more robust and doesn't have to undermine
the type checker.
PR Close#38775
This commit re-enables some tests that were temporarily disabled on Windows,
as they failed on native Windows CI. The Windows filesystem emulation has
been corrected in an earlier commit, such that the original failure would
now also occur during emulation on Linux CI.
PR Close#37782
In native windows, the drive letter is a capital letter, while our Windows
filesystem emulation would use lowercase drive letters. This difference may
introduce tests to behave differently in native Windows versus emulated
Windows, potentially causing unexpected CI failures on Windows CI after a PR
has been merged.
Resolves FW-2267
PR Close#37782
The logic for computing identifiers, specifically for bound attributes
can be simplified by using the value span of the binding rather than the
source span.
PR Close#38899
In #38666 we changed how ngcc deals with type expressions, where it
would now always emit the original type expression into the generated
code as a "local" type value reference instead of synthesizing new
imports using an "imported" type value reference. This was done as a fix
to properly deal with renamed symbols, however it turns out that the
compiler has special handling for certain imported symbols, e.g.
`ChangeDetectorRef` from `@angular/core`. The "local" type value
reference prevented this special logic from being hit, resulting in
incorrect compilation of pipe factories.
This commit fixes the issue by manually inspecting the import of the
type expression, in order to return an "imported" type value reference.
By manually inspecting the import we continue to handle renamed symbols.
Fixes#38883
PR Close#38892
Common AST formats such as TS and Babel do not use a separate
node for comments, but instead attach comments to other AST nodes.
Previously this was worked around in TS by creating a `NotEmittedStatement`
AST node to attach the comment to. But Babel does not have this facility,
so it will not be a viable approach for the linker.
This commit refactors the output AST, to remove the `CommentStmt` and
`JSDocCommentStmt` nodes. Instead statements have a collection of
`leadingComments` that are rendered/attached to the final AST nodes
when being translated or printed.
PR Close#38811
This change prevents comments from a resolved node from appearing at
each location the resolved expression is used and also prevents callers
of `Scope#resolve` from accidentally modifying / adding comments to the
declaration site.
PR Close#38857
In the integration test suite of ngcc, we load a set of files from
`node_modules` into memory. This includes the `typescript` package and
`@angular` scoped packages, which account for a large number of large
files that needs to be loaded from disk. This commit moves this work
to the top-level, such that it doesn't have to be repeated in all tests.
PR Close#38840
Recent optimizations to ngcc have significantly reduced the total time
it takes to process `node_modules`, to such extend that sharding across
multiple processes has become less effective. Previously, running
ngcc asynchronously would allow for up to 8 workers to be allocated,
however these workers have to repeat work that could otherwise be shared.
Because ngcc is now able to reuse more shared computations, the overhead
of multiple workers is increased and therefore becomes less effective.
As an additional benefit, having fewer workers requires less memory and
less startup time.
To give an idea, using the following test setup:
```bash
npx @angular/cli new perf-test
cd perf-test
yarn ng add @angular/material
./node_modules/.bin/ngcc --properties es2015 module main \
--first-only --create-ivy-entry-points
```
We observe the following figures on CI:
| | 10.1.1 | PR #38840 |
| ----------------- | --------- | --------- |
| Sync | 85s | 25s |
| Async (8 workers) | 22s | 16s |
| Async (4 workers) | - | 11s |
In addition to changing the default number of workers, ngcc will now
use the environment variable `NGCC_MAX_WORKERS` that may be configured
to either reduce or increase the number of workers.
PR Close#38840
ngcc creates typically two `ts.Program` instances for each entry-point,
one for processing sources and another one for processing the typings.
The creation of these programs is somewhat expensive, as it concerns
module resolution and parsing of source files.
This commit implements several layers of caching to optimize the
creation of programs:
1. A shared module resolution cache across all entry-points within a
single invocation of ngcc. Both the sources and typings program
benefit from this cache.
2. Sharing the parsed `ts.SourceFile` for a single entry-point between
the sources and typings program.
3. Sharing parsed `ts.SourceFile`s of TypeScript's default libraries
across all entry-points within a single invocation. Some of these
default library typings are large and therefore expensive to parse,
so sharing the parsed source files across all entry-points offers
a significant performance improvement.
Using a bare CLI app created using `ng new` + `ng add @angular/material`,
the above changes offer a 3-4x improvement in ngcc's processing time
when running synchronously and ~2x improvement for asynchronous runs.
PR Close#38840
When type-checking a component, the declaring NgModule scope is used
to create a directive matcher that contains flattened directive metadata,
i.e. the metadata of a directive and its base classes. This computation
is done for all components, whereas the type-check scope is constant per
NgModule. Additionally, the flattening of metadata is constant per
directive instance so doesn't necessarily have to be recomputed for
each component.
This commit introduces a `TypeCheckScopes` class that is responsible
for flattening directives and computing the scope per NgModule. It
caches the computed results as appropriate to avoid repeated computation.
PR Close#38539
For the compilation of a component, the compiler has to prepare some
information about the directives and pipes that are used in the template.
This information includes an expression for directives/pipes, for usage
within the compilation output. For large NgModule compilation scopes
this has shown to introduce a performance hotspot, as the generation of
expressions is quite expensive. This commit reduces the performance
overhead by only generating expressions for the directives/pipes that
are actually used within the template, significantly cutting down on
the compiler's resolve phase.
PR Close#38539
Adds `TemplateTypeChecker` operation to retrieve the `Symbol` of a
`TmplAstVariable` or `TmplAstReference` in a template.
Sometimes we need to traverse an intermediate variable declaration to arrive at
the correct `ts.Symbol`. For example, loop variables are declared using an intermediate:
```
<div *ngFor="let user of users">
{{user.name}}
</div>
```
Getting the symbol of user here (from the expression) is tricky, because the TCB looks like:
```
var _t0 = ...; // type of NgForOf
var _t1: any; // context of embedded view for NgForOf structural directive
if (NgForOf.ngTemplateContextGuard(_t0, _t1)) {
// _t1 is now NgForOfContext<...>
var _t2 = _t1.$implicit; // let user = '$implicit'
_t2.name; // user.name expression
}
```
Just getting the `ts.Expression` for the `AST` node `PropRead(ImplicitReceiver, 'user')`
via the sourcemaps will yield the `_t2` expression. This function recognizes that `_t2`
is a variable declared locally in the TCB, and actually fetch the `ts.Symbol` of its initializer.
These special handlings show the versatility of the `Symbol`
interface defined in the API. With this, when we encounter a template variable,
we can provide the declaration node, as well as specific information
about the variable instance, such as the `ts.Type` and `ts.Symbol`.
PR Close#38618
Adds support to the `TemplateTypeChecker` to get a `Symbol` of an AST
expression in a component template.
Not all expressions will have `ts.Symbol`s (e.g. there is no `ts.Symbol`
associated with the expression `a + b`, but there are for both the a and b
nodes individually).
PR Close#38618
Adds support to the `TemplateTypeChecker` for retrieving a `Symbol` for
`TmplAstTemplate` and `TmplAstElement` nodes in a component template.
PR Close#38618
Specifically, this commit adds support for retrieving a `Symbol` from a
`TmplAstBoundEvent` or `TmplAstBoundAttribute`. Other template nodes
will be supported in following commits.
PR Close#38618
The statements generated in the TCB are optimized for performance and producing diagnostics.
These optimizations can result in generating a TCB that does not have all the information
needed by the `TemplateTypeChecker` for retrieving `Symbol`s. For example, as an optimization,
the TCB will not generate variable declaration statements for directives that have no
references, inputs, or outputs. However, the `TemplateTypeChecker` always needs these
statements to be present in order to provide `ts.Symbol`s and `ts.Type`s for the directives.
This commit adds logic to the TCB generation to ensure the required
information is available in a form that the `TemplateTypeChecker` can
consume. It also adds an option to the `NgCompiler` that makes this
generation configurable.
PR Close#38618
This commit defines the interfaces which outline the information the
`TemplateTypeChecker` can return when requesting a Symbol for an item in the
`TemplateAst`.
Rather than providing the `ts.Symbol`, `ts.Type`, etc.
information in several separate functions, the `TemplateTypeChecker` can
instead provide all the useful information it knows about a particular
node in the `TemplateAst` and allow the callers to determine what to do
with it.
PR Close#38618
When type-checking a component, the declaring NgModule scope is used
to create a directive matcher that contains flattened directive metadata,
i.e. the metadata of a directive and its base classes. This computation
is done for all components, whereas the type-check scope is constant per
NgModule. Additionally, the flattening of metadata is constant per
directive instance so doesn't necessarily have to be recomputed for
each component.
This commit introduces a `TypeCheckScopes` class that is responsible
for flattening directives and computing the scope per NgModule. It
caches the computed results as appropriate to avoid repeated computation.
PR Close#38539
For the compilation of a component, the compiler has to prepare some
information about the directives and pipes that are used in the template.
This information includes an expression for directives/pipes, for usage
within the compilation output. For large NgModule compilation scopes
this has shown to introduce a performance hotspot, as the generation of
expressions is quite expensive. This commit reduces the performance
overhead by only generating expressions for the directives/pipes that
are actually used within the template, significantly cutting down on
the compiler's resolve phase.
PR Close#38539
The type-to-value conversion could previously crash if a symbol was
resolved that does not have any declarations, e.g. because it's imported
from a missing module. This would typically result in a semantic
TypeScript diagnostic and halt further compilation, therefore not
reaching the type-to-value conversion logic. In Bazel however, it turns
out that Angular semantic diagnostics are requested even if there are
semantic TypeScript errors in the program, so it would then reach the
type-to-value conversation and crash.
This commit fixes the unsafe access and adds a test that ignores the
TypeScript semantic error, effectively replicating the situation as
experienced under Bazel.
Fixes#38670
PR Close#38684
Previously, localized strings had very limited or incorrect source-mapping
information available.
Now the i18n AST nodes and related output AST nodes include source-span
information about message-parts and placeholders - including closing tag
placeholders.
This information is then used when generating the final localized string
ASTs to ensure that the correct source-mapping is rendered.
See #38588 (comment)
PR Close#38645
Previously this interface was mostly stored in compiler-cli, but it
contains some properties that would be useful for compiling the
"declare component" prelink code.
This commit moves some of the interface over to the compiler
package so that it can be referenced there without creating a
circular dependency between the compiler and compiler-cli.
PR Close#38594
The `R3TargetBinder` accepts an interface for directive metadata which
declares types for `input` and `output` objects. These types convey the
mapping between the property names for an input or output and the
corresponding property name on the component class. Due to
`R3TargetBinder`'s requirements, this mapping was specified with property
names as keys and field names as values.
However, because of duck typing, this interface was accidentally satisifed
by the opposite mapping, of field names to property names, that was produced
in other parts of the compiler. This form more naturally represents the data
model for inputs.
Rather than accept the field -> property mapping and invert it, this commit
introduces a new abstraction for such mappings which is bidirectional,
eliminating the ambiguous plain object type. This mapping uses new,
unambiguous terminology ("class property name" and "binding property name")
and can be used to satisfy both the needs of the binder as well as those of
the template type-checker (field -> property).
A new test ensures that the input/output metadata produced by the compiler
during analysis is directly compatible with the binder via this unambiguous
new interface.
PR Close#38685
If a type has been renamed when it was exported, we need to
reference the external public alias name rather than the internal
original name for the type. Otherwise we will try to import the
type by its internal name, which is not publicly accessible.
Fixes#38238
PR Close#38666
A recent change to `@angular/localize` brought in the `AbsoluteFsPath` type
from the `@angular/compiler-cli`. But this brought along with it a reference
to NodeJS typings - specifically the `FileSystem` interface refers to the
`Buffer` type from NodeJS.
This affects compilation of `@angular/localize` code that will be run in
the browser - for example projects that reference `loadTranslations()`.
The compilation breaks if the NodeJS typings are not included in the build.
Clearly it is not desirable to have these typings included when the project
is not targeting NodeJS.
This commit replaces references to the NodeJS `Buffer` type with `Uint8Array`,
which is available across all platforms and is actually the super-class of
`Buffer`.
Fixes#38692
PR Close#38700
Previously, the compiler was not able to display template parsing errors as
true `ts.Diagnostic`s that point inside the template. Instead, it would
throw an actual `Error`, and "crash" with a stack trace containing the
template errors.
Not only is this a poor user experience, but it causes the Language Service
to also crash as the user is editing a template (in actuality the LS has to
work around this bug).
With this commit, such parsing errors are converted to true template
diagnostics with appropriate span information to be displayed contextually
along with all other diagnostics. This majorly improves the user experience
and unblocks the Language Service from having to deal with the compiler
"crashing" to report errors.
PR Close#38576
The template type-checking engine includes utilities for creating
`ts.Diagnostic`s for component templates. Previously only the template type-
checker itself created such diagnostics. However, the template parser also
produces errors which should be represented as template diagnostics.
This commit prepares for that conversion by extracting the machinery for
producing template diagnostics into its own sub-package, so that other parts
of the compiler can depend on it without depending on the entire template
type-checker.
PR Close#38576
Previously, the `sourceSpan` and `startSourceSpan` were the same
object, which meant that you had the following situation:
```
element = <div>some content</div>
sourceSpan = <div>
startSourceSpan = <div>
endSourceSpan = </div>
```
This made `sourceSpan` redundant and meant that if you
wanted a span for the whole element including its content
and closing tag, it had to be computed.
Now `sourceSpan` is separated from `startSourceSpan`
resulting in:
```
element = <div>some content</div>
sourceSpan = <div>some content</div>
startSourceSpan = <div>
endSourceSpan = </div>
```
PR Close#38581
Previously the lexer was responsible for deciding whether an "inline"
template should also have its line-endings normalized.
Now this decision is made higher up in the call stack to allow more
flexibility in the parser/lexer.
PR Close#38581
The HTML parser gets an element's namespace either from the tag name
(e.g. `<svg:rect>`) or from its parent element `<svg><rect></svg>`) which
breaks down when an element is inside of an SVG `foreignElement`,
because foreign elements allow nodes from a different namespace to be
inserted into an SVG.
These changes add another flag to the tag definitions which tells child
nodes whether to try to inherit their namespaces from their parents.
It also adds a definition for `foreignObject` with the new flag,
allowing elements placed inside it to infer their namespaces instead.
Fixes#37218.
PR Close#38477
With Typescript 4, `ts.updateIdentifier` is no longer available.
Calling `ts.updateIdentifier` used to return the same node when
`typeArguments` was `undefined` because `node.typeArguments`
was also `undefined`.
Relevant TS code:
```js
function updateIdentifier(node, typeArguments) {
return node.typeArguments !== typeArguments
? updateNode(createIdentifier(ts.idText(node), typeArguments), node)
: node;
}
```
PR Close#38076
Prior to this change, the unary + and - operators would be parsed as `x - 0`
and `0 - x` respectively. The runtime semantics of these expressions are
equivalent, however they may introduce inaccurate template type checking
errors as the literal type is lost, for example:
```ts
@Component({
template: `<button [disabled]="isAdjacent(-1)"></button>`
})
export class Example {
isAdjacent(direction: -1 | 1): boolean { return false; }
}
```
would incorrectly report a type-check error:
> error TS2345: Argument of type 'number' is not assignable to parameter
of type '-1 | 1'.
Additionally, the translated expression for the unary + operator would be
considered as arithmetic expression with an incompatible left-hand side:
> error TS2362: The left-hand side of an arithmetic operation must be of
type 'any', 'number', 'bigint' or an enum type.
To resolve this issues, the implicit transformation should be avoided.
This commit adds a new unary AST node to represent these expressions,
allowing for more accurate type-checking.
Fixes#20845Fixes#36178
PR Close#37918
We had a couple of places where we were assuming that if a particular
symbol has a value, then it will exist at runtime. This is true in most cases,
but it breaks down for `const` enums.
Fixes#38513.
PR Close#38542
This commit adds a `getTemplateOfComponent` method to the
`TemplateTypeChecker` API, which retrieves the actual nodes parsed and used
by the compiler for template type-checking. This is advantageous for the
language service, which may need to query other APIs in
`TemplateTypeChecker` that require the same nodes used to bind the template
while generating the TCB.
Fixes#38352
PR Close#38355
Similarly to the change we landed in the `@angular/core` reflection
capabilities, we need to make sure that ngcc can detect pass-through
delegate constructors for classes using downleveled ES2015 output.
More details can be found in the preceding commit, and in the issue
outlining the problem: #38453.
Fixes#38453.
PR Close#38463
This commit updates the code to move generated i18n statements into the `consts` field of
ComponentDef to avoid invoking `$localize` function before component initialization (to better
support runtime translations) and also avoid problems with lazy-loading when i18n defs may not
be present in a chunk where it's referenced.
Prior to this change the i18n statements were generated at the top leve:
```
var I18N_0;
if (typeof ngI18nClosureMode !== "undefined" && ngI18nClosureMode) {
var MSG_X = goog.getMsg(“…”);
I18N_0 = MSG_X;
} else {
I18N_0 = $localize('...');
}
defineComponent({
// ...
template: function App_Template(rf, ctx) {
i0.ɵɵi18n(2, I18N_0);
}
});
```
This commit updates the logic to generate the following code instead:
```
defineComponent({
// ...
consts: function() {
var I18N_0;
if (typeof ngI18nClosureMode !== "undefined" && ngI18nClosureMode) {
var MSG_X = goog.getMsg(“…”);
I18N_0 = MSG_X;
} else {
I18N_0 = $localize('...');
}
return [
I18N_0
];
},
template: function App_Template(rf, ctx) {
i0.ɵɵi18n(2, 0);
}
});
```
Also note that i18n template instructions now refer to the `consts` array using an index
(similar to other template instructions).
PR Close#38404
