fix: improve source map comment detection and test fix

Author: IchordeDionysos

.idea/copilotDiffState.xml

@@ -98,7 +98,7 @@ describeBuilder(buildApplication, APPLICATION_BUILDER_INFO, (harness) => {
       );
       expect(jsFiles.length).toBeGreaterThan(0);
 
-      const debugIdRe = /^\s*\/\/\s*#\s*debugId=([0-9a-f-]+)\s*$/m;
+      const debugIdRe = /\/\/# debugId=([^\r\n]*)/;
       const indexHtml = harness.readFile('dist/browser/index.html');
       const importmapMatch = indexHtml.match(/<script type="importmap">([^<]+)<\/script>/);
       const importmap = importmapMatch

packages/angular/build/src/builders/application/tests/options/subresource-integrity_spec.ts

@@ -41,10 +41,10 @@ export function generateDebugId(name: string | Uint8Array): string {
 }
 
 /** Pattern matching an existing `//# debugId=<uuid>` comment anywhere in the file. */
-const DEBUG_ID_COMMENT = /^[ \t]*\/\/[ \t]*#[ \t]*debugId=[^\n]*\n?/m;
+const DEBUG_ID_COMMENT = /\n\/\/# debugId=[^\r\n]*\n?/;
 
 /** Pattern matching the `//# sourceMappingURL=` comment, used to position the debug-id line. */
-const SOURCE_MAPPING_URL_COMMENT = /^[ \t]*\/\/[ \t]*#[ \t]*sourceMappingURL=[^\n]*$/m;
+const SOURCE_MAPPING_URL_COMMENT = /\n\/\/# sourceMappingURL=[^\r\n]*\s*$/;
 
 /**
  * Inserts (or replaces) a `//# debugId=<id>` comment in the given JavaScript text.
@@ -58,11 +58,11 @@ export function injectDebugIdIntoJs(text: string, id: string): string {
 
   // Replace any existing debugId comment to keep the operation idempotent.
   if (DEBUG_ID_COMMENT.test(text)) {
-    return text.replace(DEBUG_ID_COMMENT, `${comment}\n`);
+    return text.replace(DEBUG_ID_COMMENT, `\n${comment}\n`);
   }
 
   if (SOURCE_MAPPING_URL_COMMENT.test(text)) {
-    return text.replace(SOURCE_MAPPING_URL_COMMENT, (match) => `${comment}\n${match}`);
+    return text.replace(SOURCE_MAPPING_URL_COMMENT, (match) => `\n${comment}${match}`);
   }
 
   // No source map reference; append at the very end on its own line.