feat(@angular/build): provide file dependencies map on compilation initialize result

packages/angular/build/src/tools/angular/compilation/angular-compilation.ts

@@ -76,6 +76,7 @@ export abstract class AngularCompilation {
     referencedFiles: readonly string[];
     externalStylesheets?: ReadonlyMap<string, string>;
     templateUpdates?: ReadonlyMap<string, string>;
+    fileDependencies?: ReadonlyMap<string, readonly string[]>;
   }>;
 
   abstract emitAffectedFiles(): Iterable<EmitFileResult> | Promise<Iterable<EmitFileResult>>;

packages/angular/build/src/tools/angular/compilation/aot-compilation.ts

@@ -62,6 +62,7 @@ export class AotCompilation extends AngularCompilation {
     referencedFiles: readonly string[];
     externalStylesheets?: ReadonlyMap<string, string>;
     templateUpdates?: ReadonlyMap<string, string>;
+    fileDependencies?: ReadonlyMap<string, readonly string[]>;
   }> {
     // Dynamically load the Angular compiler CLI package
     const { NgtscProgram, OptimizeFor } = await AngularCompilation.loadCompilerCli();
@@ -175,13 +176,15 @@ export class AotCompilation extends AngularCompilation {
       findAffectedFiles(typeScriptProgram, angularCompiler, usingBuildInfo),
     );
 
+    const fileDependencies = new Map<string, string[]>();
+
     // Get all files referenced in the TypeScript/Angular program including component resources
     const referencedFiles = typeScriptProgram
       .getSourceFiles()
       .filter((sourceFile) => !angularCompiler.ignoreForEmit.has(sourceFile))
       .flatMap((sourceFile) => {
         const resourceDependencies = angularCompiler.getResourceDependencies(sourceFile);
-
+        fileDependencies.set(sourceFile.fileName, resourceDependencies);
         // Also invalidate Angular diagnostics for a source file if component resources are modified
         if (this.#state && hostOptions.modifiedFiles?.size) {
           for (const resourceDependency of resourceDependencies) {
@@ -212,6 +215,7 @@ export class AotCompilation extends AngularCompilation {
       referencedFiles,
       externalStylesheets: hostOptions.externalStylesheets,
       templateUpdates,
+      fileDependencies,
     };
   }
 

packages/angular/build/src/tools/angular/compilation/parallel-worker.ts

@@ -45,58 +45,63 @@ export async function initialize(request: InitRequest) {
     }
   });
 
-  const { compilerOptions, referencedFiles, externalStylesheets, templateUpdates } =
-    await compilation.initialize(
-      request.tsconfig,
-      {
-        fileReplacements: request.fileReplacements,
-        sourceFileCache,
-        modifiedFiles: sourceFileCache.modifiedFiles,
-        transformStylesheet(data, containingFile, stylesheetFile, order, className) {
-          const requestId = randomUUID();
-          const resultPromise = new Promise<string>((resolve, reject) =>
-            stylesheetRequests.set(requestId, [resolve, reject]),
-          );
-
-          request.stylesheetPort.postMessage({
-            requestId,
-            data,
-            containingFile,
-            stylesheetFile,
-            order,
-            className,
-          });
-
-          return resultPromise;
-        },
-        processWebWorker(workerFile, containingFile) {
-          Atomics.store(request.webWorkerSignal, 0, 0);
-          request.webWorkerPort.postMessage({ workerFile, containingFile });
-
-          Atomics.wait(request.webWorkerSignal, 0, 0);
-          const result = receiveMessageOnPort(request.webWorkerPort)?.message;
-
-          if (result?.error) {
-            throw result.error;
-          }
-
-          return result?.workerCodeFile ?? workerFile;
-        },
+  const {
+    compilerOptions,
+    referencedFiles,
+    externalStylesheets,
+    templateUpdates,
+    fileDependencies,
+  } = await compilation.initialize(
+    request.tsconfig,
+    {
+      fileReplacements: request.fileReplacements,
+      sourceFileCache,
+      modifiedFiles: sourceFileCache.modifiedFiles,
+      transformStylesheet(data, containingFile, stylesheetFile, order, className) {
+        const requestId = randomUUID();
+        const resultPromise = new Promise<string>((resolve, reject) =>
+          stylesheetRequests.set(requestId, [resolve, reject]),
+        );
+
+        request.stylesheetPort.postMessage({
+          requestId,
+          data,
+          containingFile,
+          stylesheetFile,
+          order,
+          className,
+        });
+
+        return resultPromise;
       },
-      (compilerOptions) => {
-        Atomics.store(request.optionsSignal, 0, 0);
-        request.optionsPort.postMessage(compilerOptions);
+      processWebWorker(workerFile, containingFile) {
+        Atomics.store(request.webWorkerSignal, 0, 0);
+        request.webWorkerPort.postMessage({ workerFile, containingFile });
 
-        Atomics.wait(request.optionsSignal, 0, 0);
-        const result = receiveMessageOnPort(request.optionsPort)?.message;
+        Atomics.wait(request.webWorkerSignal, 0, 0);
+        const result = receiveMessageOnPort(request.webWorkerPort)?.message;
 
         if (result?.error) {
           throw result.error;
         }
 
-        return result?.transformedOptions ?? compilerOptions;
+        return result?.workerCodeFile ?? workerFile;
       },
-    );
+    },
+    (compilerOptions) => {
+      Atomics.store(request.optionsSignal, 0, 0);
+      request.optionsPort.postMessage(compilerOptions);
+
+      Atomics.wait(request.optionsSignal, 0, 0);
+      const result = receiveMessageOnPort(request.optionsPort)?.message;
+
+      if (result?.error) {
+        throw result.error;
+      }
+
+      return result?.transformedOptions ?? compilerOptions;
+    },
+  );
 
   return {
     externalStylesheets,
@@ -109,6 +114,7 @@ export async function initialize(request: InitRequest) {
       sourceMap: compilerOptions.sourceMap,
       inlineSourceMap: compilerOptions.inlineSourceMap,
     },
+    fileDependencies,
   };
 }