From 80cde783081fd4badd326964b4f53cc20a2f1e12 Mon Sep 17 00:00:00 2001
From: Kirk Waiblinger <53019676+kirkwaiblinger@users.noreply.github.com>
Date: Sun, 31 Aug 2025 18:47:42 -0600
Subject: [PATCH] add workaround

---
 .../src/getTSConfigRootDirFromStack.ts        |  5 +++++
 .../tests/getTsconfigRootDirFromStack.test.ts | 22 +++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/packages/typescript-eslint/src/getTSConfigRootDirFromStack.ts b/packages/typescript-eslint/src/getTSConfigRootDirFromStack.ts
index 1d4c558eabe4..7e3da09e4ec5 100644
--- a/packages/typescript-eslint/src/getTSConfigRootDirFromStack.ts
+++ b/packages/typescript-eslint/src/getTSConfigRootDirFromStack.ts
@@ -41,6 +41,11 @@ export function getTSConfigRootDirFromStack(): string | undefined {
 
     const parsedPath = path.parse(stackFrameFilePath);
     if (/^eslint\.config\.(c|m)?(j|t)s$/.test(parsedPath.base)) {
+      if (process.platform === 'win32') {
+        // workaround for https://github.com/typescript-eslint/typescript-eslint/issues/11530
+        // (caused by https://github.com/unjs/jiti/issues/397)
+        return parsedPath.dir.replaceAll('/', path.sep);
+      }
       return parsedPath.dir;
     }
   }
diff --git a/packages/typescript-eslint/tests/getTsconfigRootDirFromStack.test.ts b/packages/typescript-eslint/tests/getTsconfigRootDirFromStack.test.ts
index 8f37d5833df5..92139b45896a 100644
--- a/packages/typescript-eslint/tests/getTsconfigRootDirFromStack.test.ts
+++ b/packages/typescript-eslint/tests/getTsconfigRootDirFromStack.test.ts
@@ -48,4 +48,26 @@ describe(getTSConfigRootDirFromStack, () => {
     expect(Error.prepareStackTrace).toBe(dummyFunction);
     Error.prepareStackTrace = prepareStackTrace;
   });
+
+  it.runIf(isWindows)(
+    'works when jiti gives non-normalized stack traces on windows',
+    () => {
+      vi.spyOn(Error, 'captureStackTrace').mockImplementationOnce(
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        (target: any, _constructorOpt) => {
+          target.stack = [
+            {
+              getFileName() {
+                return 'F:/a/b/eslint.config.ts';
+              },
+            },
+          ];
+        },
+      );
+
+      const inferredTsconfigRootDir = getTSConfigRootDirFromStack();
+
+      expect(inferredTsconfigRootDir).toBe('F:\\a\\b');
+    },
+  );
 });