filterAlertsByDiffRange: add debug logging

Author: cklin

src/upload-lib.ts

@@ -578,7 +578,7 @@ export async function uploadFiles(
     features,
     logger,
   );
-  sarif = filterAlertsByDiffRange(sarif);
+  sarif = filterAlertsByDiffRange(sarif, logger);
   sarif = await fingerprints.addFingerprints(sarif, checkoutPath, logger);
 
   const analysisKey = await api.getAnalysisKey();
@@ -850,7 +850,7 @@ export class InvalidSarifUploadError extends Error {
   }
 }
 
-function filterAlertsByDiffRange(sarif: SarifFile): SarifFile {
+function filterAlertsByDiffRange(sarif: SarifFile, logger: Logger): SarifFile {
   const diffRangeFilePath = path.join(
     actionsUtil.getTemporaryDirectory(),
     "pr-diff-range",
@@ -886,6 +886,7 @@ function filterAlertsByDiffRange(sarif: SarifFile): SarifFile {
             return false;
           }
           const locationPath = path.join(checkoutPath, uri);
+          logger.debug(`Alert location URI: ${uri}, Path: ${locationPath}`);
           return diffRanges.some(
             (range) =>
               range.path === locationPath &&