refactor(compiler-cli): decouple schema checker from typescript

Makes the `DomSchemaChecker` from TypeScript APIs.

packages/compiler-cli/private/hybrid_analysis.ts

@@ -8,20 +8,21 @@
 
 // TCB generation exports for ng-hybrid-preprocessor
 export {generateTypeCheckBlock} from '../src/ngtsc/typecheck/src/type_check_block';
-export type {
-  TypeCheckingConfig,
-  TcbComponentMetadata,
-  TcbTypeCheckBlockMetadata,
-  TcbTypeParameter,
-  TypeCheckId,
-  TcbDirectiveMetadata,
-  TemplateDiagnostic,
-  TcbReferenceMetadata,
-  SourceMapping,
-  OutOfBandDiagnosticRecorder,
+export {
+  type TypeCheckingConfig,
+  type TcbComponentMetadata,
+  type TcbTypeCheckBlockMetadata,
+  type TcbTypeParameter,
+  type TypeCheckId,
+  type TcbDirectiveMetadata,
+  type TemplateDiagnostic,
+  type TcbReferenceMetadata,
+  type SourceMapping,
+  type OutOfBandDiagnosticRecorder,
+  type DomSchemaChecker,
   OutOfBadDiagnosticCategory,
 } from '../src/ngtsc/typecheck/api';
-export {DomSchemaChecker, RegistryDomSchemaChecker} from '../src/ngtsc/typecheck/src/dom';
+export {RegistryDomSchemaChecker} from '../src/ngtsc/typecheck/src/dom';
 export {Environment} from '../src/ngtsc/typecheck/src/environment';
 export {TcbGenericContextBehavior} from '../src/ngtsc/typecheck/src/ops/context';
 export {ImportManager} from '../src/ngtsc/translator';

packages/compiler-cli/src/ngtsc/typecheck/api/index.ts

@@ -13,3 +13,4 @@ export * from './context';
 export * from './scope';
 export * from './symbols';
 export * from './oob';
+export * from './schema';

packages/compiler-cli/src/ngtsc/typecheck/api/schema.ts

@@ -0,0 +1,82 @@
+/*!
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.dev/license
+ */
+
+import {ParseSourceSpan, SchemaMetadata, TmplAstHostElement} from '@angular/compiler';
+import {TypeCheckId} from './api';
+
+/**
+ * Checks every non-Angular element/property processed in a template and potentially produces
+ * diagnostics related to improper usage.
+ *
+ * A `DomSchemaChecker`'s job is to check DOM nodes and their attributes written used in templates
+ * and produce diagnostics if the nodes don't conform to the DOM specification. It acts as a
+ * collector for these diagnostics, and can be queried later to retrieve the list of any that have
+ * been generated.
+ */
+export interface DomSchemaChecker<T> {
+  /**
+   * Get the diagnostics that have been generated via `checkElement` and `checkProperty` calls
+   * thus far.
+   */
+  readonly diagnostics: ReadonlyArray<T>;
+
+  /**
+   * Check a non-Angular element and record any diagnostics about it.
+   *
+   * @param id Template ID, suitable for resolution with a `TcbSourceResolver`.
+   * @param tagName Tag name of the element in question
+   * @param sourceSpanForDiagnostics Span that should be used when reporting diagnostics.
+   * @param schemas Any active schemas for the template, which might affect the validity of the
+   * element.
+   * @param hostIsStandalone Indicates whether the element's host is a standalone component.
+   */
+  checkElement(
+    id: TypeCheckId,
+    tagName: string,
+    sourceSpanForDiagnostics: ParseSourceSpan,
+    schemas: SchemaMetadata[],
+    hostIsStandalone: boolean,
+  ): void;
+
+  /**
+   * Check a property binding on an element and record any diagnostics about it.
+   *
+   * @param id the type check ID, suitable for resolution with a `TcbSourceResolver`.
+   * @param tagName tag name of the element.
+   * @param name the name of the property being checked.
+   * @param span the source span of the binding. This is redundant with `element.attributes` but is
+   * passed separately to avoid having to look up the particular property name.
+   * @param schemas any active schemas for the template, which might affect the validity of the
+   * property.
+   */
+  checkTemplateElementProperty(
+    id: string,
+    tagName: string,
+    name: string,
+    span: ParseSourceSpan,
+    schemas: SchemaMetadata[],
+    hostIsStandalone: boolean,
+  ): void;
+
+  /**
+   * Check a property binding on a host element and record any diagnostics about it.
+   * @param id the type check ID, suitable for resolution with a `TcbSourceResolver`.
+   * @param element the element node in question.
+   * @param name the name of the property being checked.
+   * @param span the source span of the binding.
+   * @param schemas any active schemas for the template, which might affect the validity of the
+   * property.
+   */
+  checkHostElementProperty(
+    id: string,
+    element: TmplAstHostElement,
+    name: string,
+    span: ParseSourceSpan,
+    schemas: SchemaMetadata[],
+  ): void;
+}

packages/compiler-cli/src/ngtsc/typecheck/src/context.ts

@@ -37,11 +37,12 @@ import {
   TypeCtorMetadata,
   TemplateContext,
   OutOfBandDiagnosticRecorder,
+  DomSchemaChecker,
 } from '../api';
 import {makeTemplateDiagnostic} from '../diagnostics';
 
 import {adaptTypeCheckBlockMetadata} from './tcb_adapter';
-import {DomSchemaChecker, RegistryDomSchemaChecker} from './dom';
+import {RegistryDomSchemaChecker} from './dom';
 import {Environment} from './environment';
 import {OutOfBandDiagnosticRecorderImpl} from './oob';
 import {ReferenceEmitEnvironment} from './reference_emit_environment';
@@ -134,7 +135,7 @@ export interface PendingShimData {
   /**
    * The `DomSchemaChecker` in use for this template, which records any schema-related diagnostics.
    */
-  domSchemaChecker: DomSchemaChecker;
+  domSchemaChecker: DomSchemaChecker<TemplateDiagnostic>;
 
   /**
    * Shim file in the process of being generated.
@@ -678,7 +679,7 @@ class InlineTcbOp implements Op {
     readonly meta: TypeCheckBlockMetadata,
     readonly config: TypeCheckingConfig,
     readonly reflector: ReflectionHost,
-    readonly domSchemaChecker: DomSchemaChecker,
+    readonly domSchemaChecker: DomSchemaChecker<unknown>,
     readonly oobRecorder: OutOfBandDiagnosticRecorder<unknown>,
   ) {}
 

packages/compiler-cli/src/ngtsc/typecheck/src/dom.ts

@@ -15,7 +15,7 @@ import {
 import ts from 'typescript';
 
 import {ErrorCode, ngErrorCode} from '../../diagnostics';
-import {TemplateDiagnostic, TypeCheckId} from '../api';
+import {DomSchemaChecker, TemplateDiagnostic, TypeCheckId} from '../api';
 import {makeTemplateDiagnostic} from '../diagnostics';
 
 import {TypeCheckSourceResolver} from './tcb_util';
@@ -23,83 +23,11 @@ import {TypeCheckSourceResolver} from './tcb_util';
 export const REGISTRY = new DomElementSchemaRegistry();
 const REMOVE_XHTML_REGEX = /^:xhtml:/;
 
-/**
- * Checks every non-Angular element/property processed in a template and potentially produces
- * `ts.Diagnostic`s related to improper usage.
- *
- * A `DomSchemaChecker`'s job is to check DOM nodes and their attributes written used in templates
- * and produce `ts.Diagnostic`s if the nodes don't conform to the DOM specification. It acts as a
- * collector for these diagnostics, and can be queried later to retrieve the list of any that have
- * been generated.
- */
-export interface DomSchemaChecker {
-  /**
-   * Get the `ts.Diagnostic`s that have been generated via `checkElement` and `checkProperty` calls
-   * thus far.
-   */
-  readonly diagnostics: ReadonlyArray<TemplateDiagnostic>;
-
-  /**
-   * Check a non-Angular element and record any diagnostics about it.
-   *
-   * @param id Template ID, suitable for resolution with a `TcbSourceResolver`.
-   * @param tagName Tag name of the element in question
-   * @param sourceSpanForDiagnostics Span that should be used when reporting diagnostics.
-   * @param schemas Any active schemas for the template, which might affect the validity of the
-   * element.
-   * @param hostIsStandalone Indicates whether the element's host is a standalone component.
-   */
-  checkElement(
-    id: TypeCheckId,
-    tagName: string,
-    sourceSpanForDiagnostics: ParseSourceSpan,
-    schemas: SchemaMetadata[],
-    hostIsStandalone: boolean,
-  ): void;
-
-  /**
-   * Check a property binding on an element and record any diagnostics about it.
-   *
-   * @param id the type check ID, suitable for resolution with a `TcbSourceResolver`.
-   * @param tagName tag name of the element.
-   * @param name the name of the property being checked.
-   * @param span the source span of the binding. This is redundant with `element.attributes` but is
-   * passed separately to avoid having to look up the particular property name.
-   * @param schemas any active schemas for the template, which might affect the validity of the
-   * property.
-   */
-  checkTemplateElementProperty(
-    id: string,
-    tagName: string,
-    name: string,
-    span: ParseSourceSpan,
-    schemas: SchemaMetadata[],
-    hostIsStandalone: boolean,
-  ): void;
-
-  /**
-   * Check a property binding on a host element and record any diagnostics about it.
-   * @param id the type check ID, suitable for resolution with a `TcbSourceResolver`.
-   * @param element the element node in question.
-   * @param name the name of the property being checked.
-   * @param span the source span of the binding.
-   * @param schemas any active schemas for the template, which might affect the validity of the
-   * property.
-   */
-  checkHostElementProperty(
-    id: string,
-    element: TmplAstHostElement,
-    name: string,
-    span: ParseSourceSpan,
-    schemas: SchemaMetadata[],
-  ): void;
-}
-
 /**
  * Checks non-Angular elements and properties against the `DomElementSchemaRegistry`, a schema
  * maintained by the Angular team via extraction from a browser IDL.
  */
-export class RegistryDomSchemaChecker implements DomSchemaChecker {
+export class RegistryDomSchemaChecker implements DomSchemaChecker<TemplateDiagnostic> {
   private _diagnostics: TemplateDiagnostic[] = [];
 
   get diagnostics(): ReadonlyArray<TemplateDiagnostic> {

packages/compiler-cli/src/ngtsc/typecheck/src/ops/context.ts

@@ -7,12 +7,12 @@
  */
 
 import {BoundTarget, SchemaMetadata} from '@angular/compiler';
-import {DomSchemaChecker} from '../dom';
 import {
   TypeCheckId,
   TcbDirectiveMetadata,
   TcbPipeMetadata,
   OutOfBandDiagnosticRecorder,
+  DomSchemaChecker,
 } from '../../api';
 import {Environment} from '../environment';
 
@@ -56,7 +56,7 @@ export class Context {
 
   constructor(
     readonly env: Environment,
-    readonly domSchemaChecker: DomSchemaChecker,
+    readonly domSchemaChecker: DomSchemaChecker<unknown>,
     readonly oobRecorder: OutOfBandDiagnosticRecorder<unknown>,
     readonly id: TypeCheckId,
     readonly boundTarget: BoundTarget<TcbDirectiveMetadata>,

packages/compiler-cli/src/ngtsc/typecheck/src/type_check_block.ts

@@ -6,8 +6,12 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-import {OutOfBandDiagnosticRecorder, TcbComponentMetadata, TcbTypeCheckBlockMetadata} from '../api';
-import {DomSchemaChecker} from './dom';
+import {
+  DomSchemaChecker,
+  OutOfBandDiagnosticRecorder,
+  TcbComponentMetadata,
+  TcbTypeCheckBlockMetadata,
+} from '../api';
 import {Environment} from './environment';
 import {createHostBindingsBlockGuard} from './host_bindings';
 import {Context} from './ops/context';
@@ -43,7 +47,7 @@ export function generateTypeCheckBlock(
   component: TcbComponentMetadata,
   name: string,
   meta: TcbTypeCheckBlockMetadata,
-  domSchemaChecker: DomSchemaChecker,
+  domSchemaChecker: DomSchemaChecker<unknown>,
   oobRecorder: OutOfBandDiagnosticRecorder<unknown>,
 ): string {
   const tcb = new Context(

packages/compiler-cli/src/ngtsc/typecheck/src/type_check_file.ts

@@ -11,9 +11,13 @@ import {AbsoluteFsPath} from '../../file_system';
 import {Reference, ReferenceEmitter} from '../../imports';
 import {ClassDeclaration, ReflectionHost} from '../../reflection';
 import {ImportManager} from '../../translator';
-import {OutOfBandDiagnosticRecorder, TypeCheckBlockMetadata, TypeCheckingConfig} from '../api';
+import {
+  DomSchemaChecker,
+  OutOfBandDiagnosticRecorder,
+  TypeCheckBlockMetadata,
+  TypeCheckingConfig,
+} from '../api';
 
-import {DomSchemaChecker} from './dom';
 import {Environment} from './environment';
 import {ensureTypeCheckFilePreparationImports} from './tcb_util';
 import {generateTypeCheckBlock} from './type_check_block';
@@ -64,7 +68,7 @@ export class TypeCheckFile extends Environment {
   addTypeCheckBlock(
     ref: Reference<ClassDeclaration<ts.ClassDeclaration>>,
     meta: TypeCheckBlockMetadata,
-    domSchemaChecker: DomSchemaChecker,
+    domSchemaChecker: DomSchemaChecker<unknown>,
     oobRecorder: OutOfBandDiagnosticRecorder<unknown>,
     genericContextBehavior: TcbGenericContextBehavior,
   ): void {

packages/compiler-cli/src/ngtsc/typecheck/testing/index.ts

@@ -99,12 +99,12 @@ import {
   TypeCheckingConfig,
 } from '../api/api';
 import {TemplateTypeCheckerImpl} from '../src/checker';
-import {DomSchemaChecker} from '../src/dom';
 import {TypeCheckShimGenerator} from '../src/shim';
 import {TypeCheckFile} from '../src/type_check_file';
 import {sfExtensionData} from '../../shims';
 import {freshCompilationTicket, NgCompiler, NgCompilerHost} from '../../core';
 import {TcbGenericContextBehavior} from '../src/ops/context';
+import {DomSchemaChecker} from '../api/schema';
 
 export function typescriptLibDts(): TestFile {
   return {
@@ -1027,7 +1027,7 @@ function parseInputOutputMappingArray(values: string[]) {
   );
 }
 
-export class NoopSchemaChecker implements DomSchemaChecker {
+export class NoopSchemaChecker implements DomSchemaChecker<TemplateDiagnostic> {
   get diagnostics(): ReadonlyArray<TemplateDiagnostic> {
     return [];
   }