This commit introduces the compiler output generation for signal-based
queries. Signal-based queries will have new creation-mode instructions
and update instructions to advance the current query indices in the
global shared context.
An output like the following is the expected output for signal-based
queries:
```
i0.ɵɵdefineComponent({
viewQuery: function App_Query(rf, ctx) {
if (rf & 1) {
i0.ɵɵviewQuery(ctx.d, _c0, 5);
i0.ɵɵviewQuerySignal(ctx.ds1, _c0, 5);
i0.ɵɵviewQuerySignal(ctx.ds2, _c0, 5);
}
if (rf & 2) {
let _t;
// only change-detected queries need explicit refresh
i0.ɵɵqueryRefresh(_t = i0.ɵɵloadQuery()) && (ctx.d = _t.first);
// we bump up current query index by 2 positions since there are 2 signal-based queries
i0.ɵɵqueryAdvance(2);
}
…
},
…
});
```
Note: For now, the collapsing of multiple advance instructions is not
implemented. This will be a follow-up.
Note 2: A couple of query helpers are now in their own file. This makes
it easier to focus on query-specific compiler code. The new function is
called `createQueryCreateCall`, which is a modified variant of the
existing function that previously only generated query parameters.
PR Close#53978
The new `input` API is recognized using class member initializers.
We want to support similar APIs for queries, using e.g. `viewChild`
or `viewChild.required`.
This commit extracts the input recognition API and makes it reusable,
so that the same logic can be used to detect queries on a class member.
Additional changes:
- replacing `coreModule` with the simpler `isCore` parameter. This is
more readable.
- support for detecting a list of API names on a single class member.
This allows us to detect possible query functions on the same class
member without having to check X times. We simply check for the
initializer API pattern and check if one API function name matches.
PR Close#53978
At the moment local compilation breaks for host directives because the current logic relies on global static analysis. This change creates a local version by cutting the diagnostics and copying the directive identifier as it is to the generated code without attempting to statically resolve it.
PR Close#53877
At the moment when unified host is selected (through option `_useHostForImportGeneration`) the compiler always generates alias reexports. Such reexports are mainly generated to satisfy strict dependency condition for generated files. Such condition is no longer the case for G3. At the same time, these alias reexports make it impossible to mix locally compiled targets with globally compiled targets. More precisely, a globally compiled target may not be able to consume a locally compiled target as its dependency since the former may import from the alias reexports which do not exist in the latter due to local compilation mode. So, to make global-local compilation interop possible, it is required to be able to turn off alias reexport generation.
PR Close#53937
Node removal is immediate and does not require change detection to run
when animations are not provided. This refactor makes the animation
engine notify the scheduler rather than doing it on all node removals.
PR Close#53857
The devtools now support signals.
Writable signals of primitives are editable.
Object Signal and other non-writable signals (like computed) are not editable.
Co-authored-by: Tomasz Ducin <tomasz.ducin@gmail.com>
PR Close#53269
This commit adds extra logic to produce a diagnostic in case `@Component.deferredImports` contain types from imports that also bring eager symbols. This would result in retaining a regular import and generating a dynamic import, which would not allow to defer-load dependencies.
PR Close#53899
The new type testing infrastructure was introduced for the input-as-signals
authoring functions. This commit modifies this infrastructure to make it more
generic and support queries-as-signals.
PR Close#53829
This commit update the logic to enable `register` and `resolve` phases for local compilation. Those phases will be useful for local compilation in certain cases (will be used in followup PRs).
PR Close#53901
This commit splits the query implementation and instructions
into a separate files. This is a pattern frequently used by
other functional areas of the framework and is a preparation for
introducing queries-as-signals where we are going to see more
instructions delegating to the same core functionality.
PR Close#53922
Currently when the extended type check fails due to an import reference
that cannot be generated, the fatal diagnostic is not caught and
not properly exposed as a `ts.Diagnostic` that can be gracefully
handled. This is inconsistent to non-extended type checking diagnostics.
This is problematic because Angular CLI applications currently fail in
obscure ways because:
- the CLI does not expect `getDiagnosticsForFile` to actually throw
runtime errors.
- the CLI does not seem to properly print these errors given the
parallel workers and build excection, and those errors are
especially hard to debug because there is no `stack` for
`FatalDiagnosticError`'s.
Example: `MyDir` is not exported and the type check block cannot reference it.
PR Close#53896
Prior to this commit, `TestBed` would require tests call `flushEffects`
or `fixture.detectChanges` in order to execute effects. In general, we
want to discourage authoring tests like this because it makes the timing
of change detection and effects differ from what happens in the
application. Instead, developers should perform actions and `await` (or
`flush`/`tick` when using `fakeAsync`) some `Promise` so that Angular
can react to the changes in the same way that it does in the
application.
Note that this still _allows_ developers to flush effects synchronously
with `flushEffects` and `detectChanges` but also enables the <action>,
`await` pattern described above.
PR Close#53843
This commit updates the logic of the `TemplateDefinitionBuilder` to support local compilation and generate a single dependency function for all explicitly deferred deps within a component.
PR Close#53591
This commit updates the `DeferredSymbolTracker` class to take info account the `onlyExplicitDeferDependencyImports` flag. The `DeferredSymbolTracker` class also exposes a new API to register import declarations as explicitly deferred, which will be used in followup commits.
PR Close#53591
This commit updates typechecker to store full Pipe metadata in internal data strctures, so that this information is available to more places in the code, which will be updated in a followup commit.
PR Close#53591
This commit updates a few places to extract the logic into a separate functions which will be reused in a few places in followup commits.
PR Close#53591
Enables signal inputs for existing Zone based components.
This is a next step we are taking to bring signal inputs earlier to the Angular community.
The goal is to enable early access for the ecosystem to signal inputs, while we are continuing
development of full signal components as outlined in the RFC. This will allow the ecosystem
to start integrating signals more deeply, prepare for future migrations, and improves code quality
and DX for existing components (especially for OnPush).
Based on our work on full signal components, we've gathered more information and learned
new things. We've improved the API by introducing a way to intuitively declare required inputs,
as well as improved the API around initial values. We even support non-primitive initial values
as the first argument to the `input` function now.
```ts
@Directive({..})
export class MyDir {
firstName = input<string>(); // string|undefined
lastName = input.required<string>(); // string
age = input(0); // number
```
PR Close#53872
This allows us to ensure signal inputs and a potential JIT transform
remain single file compilation compatible. The consequences are that
options need to be statically analyzable more strictly, compared to
loosened restrictions with static interpretation where e.g. `alias`
can be defined through a shared variable.
PR Close#53872
Adds infrastructure to run signal input tests with JIT (using the
transform) and AOT. Acceptance tests for signal inputs will run with
both variants. In the future we can consider expanding this
infrastructure for all of our acceptance tests, but that's a different
story.
PR Close#53808
Improves the recognition of the `input`/`input.required` functions to
not depend on external module resolution. This is useful for local
compilation and for transforms operating on a single file/ isolated
module.
PR Close#53808
Currently when someone declares a signal or non-signal input on a static
class member, the compiler will not yield any diagnostic. We can detect
these mistakes and report a diagnostic to help our users.
PR Close#53808
This commit addds two diagnostics for two scenarios where signal inputs
are declared incorrectly:
- a signal input is also annotated with `@Input` in the TypeScript
sources.
- a signal input is also declared in the `inputs` option of
`@Directive/`@Component`.
PR Close#53808
Given that the TCB output changes with signal inputs, and one of our
important considerations was auto-completion, we need some unit tests
that verify and guarantee proper completion with signal inputs being
bound in templates. This commit adds these.
PR Close#53808
This commit adds a transform for supporting input signals in JIT
environments. The transform will be wired up for Angular CLI
applications automatically. An integration test verifies that this fixes
unit testing with signal inputs.
The transform basically will take the signal input metadata and
transform it into `@Input` decorators that can provide static
information to the Angular JIT runtime when the directive/component
definition is compiled.
PR Close#53808
This commit does two things:
- exposes `addImports` so that it can be used by transforms that we are
adding to the compiler. e.g. the signal input to `@Input` transform.
- `updates `addImports` to support/use the transform context factory.
This will allow us to write proper transforms using `addImports`. Also
leverages this in the Ivy JS/DTS transforms.
PR Close#53808
Moves the signal input class member extraction logic into the dedicated
input function file. This makes the code for signal inputs more
self-contained.
This commit then re-exposes the function as part of `ngtsc/annotations`
so that it can be used later for a transform that will take the signal
input metadata and translate it into a `@Input` decorator. This allows
us to remove code duplication and guarantees consistency/correctness
PR Close#53808
We recently landed a commit to introduce support for generic type
checking of signal inputs. For that we had to implement logic that
will generate imports for inline type constructors. This required
changes to the context logic and `TypeCtorOp` file-level op.
This commit ensures that everything is working as expected, specifically
in cases where an inline type ctor is generated and imports would be
needed to unwrap the class members for `InputSignal`.
PR Close#53808
This commit creates a small http server Angular application playground
for playing with signal inputs. This is useful for development and also
validates some of the common input patterns.
PR Close#53808
Whenever a required input is accessed too early in a
directive/component, the signal input will throw an error.
This is necessary so that we can support required inputs
with intuitive typings that do not include `undefined` for
the short period of time where Angular is creating the component and
then assigning inputs later (Angular currently has no way of setting
inputs as part of the class creation when `new Dir()` happens)
PR Close#53808
Paul Gschwendtner