From 4ac2dc2e0ed6edc7162cd1f16c2388a2888939a0 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 10:44:14 +0200
Subject: [PATCH 01/23] Revert "feat(core): Explicitly allow `undefined` as
 value for `authToken` option (#805)"

This reverts commit 73787df4521e747b5665c4d9ae7bd00fc3db72b4.
---
 packages/bundler-plugin-core/src/types.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/bundler-plugin-core/src/types.ts b/packages/bundler-plugin-core/src/types.ts
index 064cd89b..accceee5 100644
--- a/packages/bundler-plugin-core/src/types.ts
+++ b/packages/bundler-plugin-core/src/types.ts
@@ -21,7 +21,7 @@ export interface Options {
    *
    * @see https://docs.sentry.io/product/accounts/auth-tokens/#organization-auth-tokens
    */
-  authToken?: string | undefined;
+  authToken?: string;
 
   /**
    * The base URL of your Sentry instance. Use this if you are using a self-hosted

From a17c2e70997dd4876e4aabef04d830c19591e3bf Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 10:55:33 +0200
Subject: [PATCH 02/23] Revert "Revert "feat(core): Explicitly allow
 `undefined` as value for `authToken` option (#805)""

This reverts commit 4ac2dc2e0ed6edc7162cd1f16c2388a2888939a0.
---
 packages/bundler-plugin-core/src/types.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/bundler-plugin-core/src/types.ts b/packages/bundler-plugin-core/src/types.ts
index accceee5..064cd89b 100644
--- a/packages/bundler-plugin-core/src/types.ts
+++ b/packages/bundler-plugin-core/src/types.ts
@@ -21,7 +21,7 @@ export interface Options {
    *
    * @see https://docs.sentry.io/product/accounts/auth-tokens/#organization-auth-tokens
    */
-  authToken?: string;
+  authToken?: string | undefined;
 
   /**
    * The base URL of your Sentry instance. Use this if you are using a self-hosted

From bed70a8f1a4afb9685feea249eefced9bd4bd040 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 11:03:10 +0200
Subject: [PATCH 03/23] some debug logging

---
 .../input/webpack5/webpack.config.js                      | 8 +++++++-
 packages/integration-tests/utils/testIf.ts                | 7 +++++--
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
index fa294910..46e30691 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
@@ -1,8 +1,14 @@
 import { sentryWebpackPlugin } from "@sentry/webpack-plugin";
-import { join } from "path";
+import { join, posix } from "path";
 
 const __dirname = new URL(".", import.meta.url).pathname;
 
+console.log({
+  __dirname,
+  posixInput: posix.join(__dirname, "..", "bundle.js"),
+  input: join(__dirname, "..", "bundle.js"),
+});
+
 export default {
   devtool: "source-map-debugids",
   cache: false,
diff --git a/packages/integration-tests/utils/testIf.ts b/packages/integration-tests/utils/testIf.ts
index 8f47bc78..c6e51cef 100644
--- a/packages/integration-tests/utils/testIf.ts
+++ b/packages/integration-tests/utils/testIf.ts
@@ -22,6 +22,9 @@ export const testIfNodeMajorVersionIsLessThan18: jest.It = function () {
 } as any;
 
 // eslint-disable-next-line no-undef
-export const describeNode18Plus: jest.Describe =
+export function describeNode18Plus(): jest.Describe {
   // eslint-disable-next-line no-undef
-  NODE_MAJOR_VERSION >= 18 ? describe : describe.skip;
+  console.log({ NODE_MAJOR_VERSION, describe, describeSkip: describe.skip });
+  // eslint-disable-next-line no-undef
+  return NODE_MAJOR_VERSION >= 18 ? describe : describe.skip;
+}

From 68c80d65424f00f2823c84f2a9ec4bee5389e87c Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 11:17:15 +0200
Subject: [PATCH 04/23] .

---
 packages/integration-tests/utils/testIf.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/integration-tests/utils/testIf.ts b/packages/integration-tests/utils/testIf.ts
index c6e51cef..74ec7ce5 100644
--- a/packages/integration-tests/utils/testIf.ts
+++ b/packages/integration-tests/utils/testIf.ts
@@ -22,9 +22,9 @@ export const testIfNodeMajorVersionIsLessThan18: jest.It = function () {
 } as any;
 
 // eslint-disable-next-line no-undef
-export function describeNode18Plus(): jest.Describe {
+export const describeNode18Plus: jest.Describe = function () {
   // eslint-disable-next-line no-undef
   console.log({ NODE_MAJOR_VERSION, describe, describeSkip: describe.skip });
   // eslint-disable-next-line no-undef
   return NODE_MAJOR_VERSION >= 18 ? describe : describe.skip;
-}
+};

From 61dc829a21e2dc1c615d3a796f172d4662871691 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 12:00:02 +0200
Subject: [PATCH 05/23] ..

---
 packages/integration-tests/utils/testIf.ts | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/packages/integration-tests/utils/testIf.ts b/packages/integration-tests/utils/testIf.ts
index 74ec7ce5..8f47bc78 100644
--- a/packages/integration-tests/utils/testIf.ts
+++ b/packages/integration-tests/utils/testIf.ts
@@ -22,9 +22,6 @@ export const testIfNodeMajorVersionIsLessThan18: jest.It = function () {
 } as any;
 
 // eslint-disable-next-line no-undef
-export const describeNode18Plus: jest.Describe = function () {
+export const describeNode18Plus: jest.Describe =
   // eslint-disable-next-line no-undef
-  console.log({ NODE_MAJOR_VERSION, describe, describeSkip: describe.skip });
-  // eslint-disable-next-line no-undef
-  return NODE_MAJOR_VERSION >= 18 ? describe : describe.skip;
-};
+  NODE_MAJOR_VERSION >= 18 ? describe : describe.skip;

From c6dbbde721d2568b66bc22893dcaf759cba12b09 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 12:00:53 +0200
Subject: [PATCH 06/23] ...

---
 packages/integration-tests/utils/testIf.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/packages/integration-tests/utils/testIf.ts b/packages/integration-tests/utils/testIf.ts
index 8f47bc78..2bd5d297 100644
--- a/packages/integration-tests/utils/testIf.ts
+++ b/packages/integration-tests/utils/testIf.ts
@@ -21,6 +21,8 @@ export const testIfNodeMajorVersionIsLessThan18: jest.It = function () {
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
 } as any;
 
+console.log("xx NODE_MAJOR_VERSION", NODE_MAJOR_VERSION);
+
 // eslint-disable-next-line no-undef
 export const describeNode18Plus: jest.Describe =
   // eslint-disable-next-line no-undef

From 2da54d428425454a6f042287216d931e785cc458 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 12:18:05 +0200
Subject: [PATCH 07/23]  ....

---
 .../debug-ids-already-injected.test.ts               | 12 ++++++------
 .../input/rollup4/rollup.config.js                   |  8 +++++++-
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/debug-ids-already-injected.test.ts b/packages/integration-tests/fixtures/debug-ids-already-injected/debug-ids-already-injected.test.ts
index f0c77f67..8d6feca8 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/debug-ids-already-injected.test.ts
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/debug-ids-already-injected.test.ts
@@ -56,13 +56,13 @@ describeNode18Plus("vite 6 bundle", () => {
 });
 
 describeNode18Plus("webpack 5 bundle", () => {
-  const viteRoot = path.join(__dirname, "input", "webpack5");
+  const webpackRoot = path.join(__dirname, "input", "webpack5");
   const tempDir = createTempDir();
 
   beforeEach(() => {
-    execSync("yarn install", { cwd: viteRoot, stdio: "inherit" });
+    execSync("yarn install", { cwd: webpackRoot, stdio: "inherit" });
     execSync("yarn webpack build", {
-      cwd: viteRoot,
+      cwd: webpackRoot,
       stdio: "inherit",
       env: { ...process.env, SENTRY_TEST_OVERRIDE_TEMP_DIR: tempDir },
     });
@@ -81,13 +81,13 @@ describeNode18Plus("webpack 5 bundle", () => {
 });
 
 describeNode18Plus("rollup bundle", () => {
-  const viteRoot = path.join(__dirname, "input", "rollup4");
+  const rollupRoot = path.join(__dirname, "input", "rollup4");
   const tempDir = createTempDir();
 
   beforeEach(() => {
-    execSync("yarn install", { cwd: viteRoot, stdio: "inherit" });
+    execSync("yarn install", { cwd: rollupRoot, stdio: "inherit" });
     execSync("yarn rollup --config rollup.config.js", {
-      cwd: viteRoot,
+      cwd: rollupRoot,
       stdio: "inherit",
       env: { ...process.env, SENTRY_TEST_OVERRIDE_TEMP_DIR: tempDir },
     });
diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
index 2a43368b..b90b7d6b 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
@@ -1,9 +1,15 @@
 import { defineConfig } from "rollup";
 import { sentryRollupPlugin } from "@sentry/rollup-plugin";
-import { join } from "path";
+import { join, posix } from "path";
 
 const __dirname = new URL(".", import.meta.url).pathname;
 
+console.log({
+  __dirname,
+  posixInput: posix.join(__dirname, "..", "bundle.js"),
+  input: join(__dirname, "..", "bundle.js"),
+});
+
 export default defineConfig({
   input: { index: join(__dirname, "..", "bundle.js") },
   output: {

From 1495201acad05cbf165eac7c282a29167f78ef33 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 12:24:51 +0200
Subject: [PATCH 08/23] use posix?

---
 .../input/webpack5/webpack.config.js                          | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
index 46e30691..8d170e1e 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
@@ -12,9 +12,9 @@ console.log({
 export default {
   devtool: "source-map-debugids",
   cache: false,
-  entry: { index: join(__dirname, "..", "bundle.js") },
+  entry: { index: posix.join(__dirname, "..", "bundle.js") },
   output: {
-    path: join(__dirname, "..", "..", "out", "webpack5"),
+    path: posix.join(__dirname, "..", "..", "out", "webpack5"),
     library: {
       type: "commonjs",
     },

From 5e23fc0072989f44f03dd0cea39e3b7cd5ceb123 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 12:45:03 +0200
Subject: [PATCH 09/23] try rollup w/ posix

---
 .../input/rollup4/rollup.config.js                          | 6 ++++--
 .../input/webpack5/webpack.config.js                        | 1 +
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
index b90b7d6b..5d17c0d6 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
@@ -8,12 +8,14 @@ console.log({
   __dirname,
   posixInput: posix.join(__dirname, "..", "bundle.js"),
   input: join(__dirname, "..", "bundle.js"),
+  outputPath: join(__dirname, "..", "..", "out", "rollup4"),
+  posixOutputPath: posix.join(__dirname, "..", "..", "out", "rollup4"),
 });
 
 export default defineConfig({
-  input: { index: join(__dirname, "..", "bundle.js") },
+  input: { index: posix.join(__dirname, "..", "bundle.js") },
   output: {
-    dir: join(__dirname, "..", "..", "out", "rollup4"),
+    dir: posix.join(__dirname, "..", "..", "out", "rollup4"),
     sourcemap: true,
     sourcemapDebugIds: true,
   },
diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
index 8d170e1e..2b55bcb3 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
@@ -7,6 +7,7 @@ console.log({
   __dirname,
   posixInput: posix.join(__dirname, "..", "bundle.js"),
   input: join(__dirname, "..", "bundle.js"),
+  outputPath: posix.join(__dirname, "..", "..", "out", "webpack5"),
 });
 
 export default {

From e645bbf308c7bbdc53974bc14a31fed62420a100 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 13:01:36 +0200
Subject: [PATCH 10/23] move input file into rollup dir

---
 .../debug-ids-already-injected/input/rollup4/rollup.config.js | 4 ++--
 packages/integration-tests/utils/testIf.ts                    | 2 --
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
index 5d17c0d6..f3223bf1 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
@@ -6,14 +6,14 @@ const __dirname = new URL(".", import.meta.url).pathname;
 
 console.log({
   __dirname,
-  posixInput: posix.join(__dirname, "..", "bundle.js"),
+  posixInput: posix.join(__dirname, "bundle.js"),
   input: join(__dirname, "..", "bundle.js"),
   outputPath: join(__dirname, "..", "..", "out", "rollup4"),
   posixOutputPath: posix.join(__dirname, "..", "..", "out", "rollup4"),
 });
 
 export default defineConfig({
-  input: { index: posix.join(__dirname, "..", "bundle.js") },
+  input: { index: posix.join(__dirname, "bundle.js") },
   output: {
     dir: posix.join(__dirname, "..", "..", "out", "rollup4"),
     sourcemap: true,
diff --git a/packages/integration-tests/utils/testIf.ts b/packages/integration-tests/utils/testIf.ts
index 2bd5d297..8f47bc78 100644
--- a/packages/integration-tests/utils/testIf.ts
+++ b/packages/integration-tests/utils/testIf.ts
@@ -21,8 +21,6 @@ export const testIfNodeMajorVersionIsLessThan18: jest.It = function () {
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
 } as any;
 
-console.log("xx NODE_MAJOR_VERSION", NODE_MAJOR_VERSION);
-
 // eslint-disable-next-line no-undef
 export const describeNode18Plus: jest.Describe =
   // eslint-disable-next-line no-undef

From bcd33410c8e4de1ed231bcdd74f1cf907a3dc197 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 13:09:08 +0200
Subject: [PATCH 11/23] check and add

---
 .../input/rollup4/bundle.js                          |  2 ++
 .../input/rollup4/rollup.config.js                   | 12 ++++++------
 2 files changed, 8 insertions(+), 6 deletions(-)
 create mode 100644 packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/bundle.js

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/bundle.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/bundle.js
new file mode 100644
index 00000000..74cb2663
--- /dev/null
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/bundle.js
@@ -0,0 +1,2 @@
+// eslint-disable-next-line no-console
+console.log("Hello world");
diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
index f3223bf1..7b053b47 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
@@ -1,21 +1,21 @@
 import { defineConfig } from "rollup";
 import { sentryRollupPlugin } from "@sentry/rollup-plugin";
-import { join, posix } from "path";
+import { join } from "path";
+import { existsSync } from "fs";
 
 const __dirname = new URL(".", import.meta.url).pathname;
 
 console.log({
   __dirname,
-  posixInput: posix.join(__dirname, "bundle.js"),
-  input: join(__dirname, "..", "bundle.js"),
+  input: join(__dirname, "bundle.js"),
+  existsInput: existsSync(join(__dirname, "bundle.js")),
   outputPath: join(__dirname, "..", "..", "out", "rollup4"),
-  posixOutputPath: posix.join(__dirname, "..", "..", "out", "rollup4"),
 });
 
 export default defineConfig({
-  input: { index: posix.join(__dirname, "bundle.js") },
+  input: { index: join(__dirname, "bundle.js") },
   output: {
-    dir: posix.join(__dirname, "..", "..", "out", "rollup4"),
+    dir: join(__dirname, "..", "..", "out", "rollup4"),
     sourcemap: true,
     sourcemapDebugIds: true,
   },

From 9a0cb11a2363d951f1ca03b8a8414da0b9b9d851 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 13:17:28 +0200
Subject: [PATCH 12/23] wtf

---
 .../input/rollup4/rollup.config.js                          | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
index 7b053b47..a92d35c0 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
@@ -1,6 +1,6 @@
 import { defineConfig } from "rollup";
 import { sentryRollupPlugin } from "@sentry/rollup-plugin";
-import { join } from "path";
+import { join, posix } from "path";
 import { existsSync } from "fs";
 
 const __dirname = new URL(".", import.meta.url).pathname;
@@ -9,11 +9,13 @@ console.log({
   __dirname,
   input: join(__dirname, "bundle.js"),
   existsInput: existsSync(join(__dirname, "bundle.js")),
+  existsInputPosix: existsSync(posix.join(__dirname, "bundle.js")),
+  existsInputDumb: existsSync(`${__dirname}/bundle.js`),
   outputPath: join(__dirname, "..", "..", "out", "rollup4"),
 });
 
 export default defineConfig({
-  input: { index: join(__dirname, "bundle.js") },
+  input: { index: `${__dirname}/bundle.js` },
   output: {
     dir: join(__dirname, "..", "..", "out", "rollup4"),
     sourcemap: true,

From 7ec598a0aebad5189e83768d7977f6413d13c720 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 13:24:43 +0200
Subject: [PATCH 13/23] more logging

---
 .../debug-ids-already-injected/input/rollup4/inputFile.js      | 2 ++
 .../debug-ids-already-injected/input/rollup4/rollup.config.js  | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/inputFile.js

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/inputFile.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/inputFile.js
new file mode 100644
index 00000000..74cb2663
--- /dev/null
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/inputFile.js
@@ -0,0 +1,2 @@
+// eslint-disable-next-line no-console
+console.log("Hello world");
diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
index a92d35c0..4bdd9b4a 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
@@ -1,7 +1,7 @@
 import { defineConfig } from "rollup";
 import { sentryRollupPlugin } from "@sentry/rollup-plugin";
 import { join, posix } from "path";
-import { existsSync } from "fs";
+import { existsSync, readdirSync } from "fs";
 
 const __dirname = new URL(".", import.meta.url).pathname;
 
@@ -12,6 +12,7 @@ console.log({
   existsInputPosix: existsSync(posix.join(__dirname, "bundle.js")),
   existsInputDumb: existsSync(`${__dirname}/bundle.js`),
   outputPath: join(__dirname, "..", "..", "out", "rollup4"),
+  allFilesInDirname: readdirSync(__dirname),
 });
 
 export default defineConfig({

From 6f202773f98785d03c853b4e3b90e72ae4dc47e9 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 13:30:21 +0200
Subject: [PATCH 14/23] so __dirname is the problem?

---
 .../debug-ids-already-injected/input/rollup4/rollup.config.js   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
index 4bdd9b4a..42927ed0 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
@@ -12,7 +12,7 @@ console.log({
   existsInputPosix: existsSync(posix.join(__dirname, "bundle.js")),
   existsInputDumb: existsSync(`${__dirname}/bundle.js`),
   outputPath: join(__dirname, "..", "..", "out", "rollup4"),
-  allFilesInDirname: readdirSync(__dirname),
+  allFilesInDirname: readdirSync(join(__dirname, ".")),
 });
 
 export default defineConfig({

From a181caf6760e1b47bcd028813381120ba523e6e4 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 13:35:35 +0200
Subject: [PATCH 15/23] try w/o __dirname

---
 .../input/rollup4/rollup.config.js                        | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
index 42927ed0..fae55104 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
@@ -7,18 +7,18 @@ const __dirname = new URL(".", import.meta.url).pathname;
 
 console.log({
   __dirname,
-  input: join(__dirname, "bundle.js"),
+  input: "./bundle.js",
   existsInput: existsSync(join(__dirname, "bundle.js")),
   existsInputPosix: existsSync(posix.join(__dirname, "bundle.js")),
   existsInputDumb: existsSync(`${__dirname}/bundle.js`),
   outputPath: join(__dirname, "..", "..", "out", "rollup4"),
-  allFilesInDirname: readdirSync(join(__dirname, ".")),
+  // allFilesInDirname: readdirSync(join(__dirname, ".")),
 });
 
 export default defineConfig({
-  input: { index: `${__dirname}/bundle.js` },
+  input: { index: "./bundle.js" },
   output: {
-    dir: join(__dirname, "..", "..", "out", "rollup4"),
+    dir: join("..", "..", "out", "rollup4"),
     sourcemap: true,
     sourcemapDebugIds: true,
   },

From a36492bef15bf3b76665d2a5fc033b1f36206e51 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 14:42:50 +0200
Subject: [PATCH 16/23] fileURLToPath

---
 .../input/webpack5/webpack.config.js                           | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
index 2b55bcb3..5bb1fd23 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
@@ -1,7 +1,8 @@
 import { sentryWebpackPlugin } from "@sentry/webpack-plugin";
 import { join, posix } from "path";
+import { fileURLToPath } from "url";
 
-const __dirname = new URL(".", import.meta.url).pathname;
+const __dirname = fileURLToPath(new URL(".", import.meta.url));
 
 console.log({
   __dirname,

From 86d08a512dcdd1a8bee59ae37adfbfbdce120088 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 14:43:15 +0200
Subject: [PATCH 17/23] simplify

---
 .../debug-ids-already-injected/input/webpack5/webpack.config.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
index 5bb1fd23..a4b49c01 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
@@ -2,7 +2,7 @@ import { sentryWebpackPlugin } from "@sentry/webpack-plugin";
 import { join, posix } from "path";
 import { fileURLToPath } from "url";
 
-const __dirname = fileURLToPath(new URL(".", import.meta.url));
+const __dirname = fileURLToPath(import.meta.url);
 
 console.log({
   __dirname,

From 72fe442002ffd66ee34d1b6bbc2463f0821667ab Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 14:51:01 +0200
Subject: [PATCH 18/23] avoid posix

---
 .../input/webpack5/webpack.config.js                        | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
index a4b49c01..68f39880 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
@@ -1,11 +1,13 @@
 import { sentryWebpackPlugin } from "@sentry/webpack-plugin";
 import { join, posix } from "path";
 import { fileURLToPath } from "url";
+import { existsSync } from "fs";
 
 const __dirname = fileURLToPath(import.meta.url);
 
 console.log({
   __dirname,
+  existsDirname: existsSync(__dirname),
   posixInput: posix.join(__dirname, "..", "bundle.js"),
   input: join(__dirname, "..", "bundle.js"),
   outputPath: posix.join(__dirname, "..", "..", "out", "webpack5"),
@@ -14,9 +16,9 @@ console.log({
 export default {
   devtool: "source-map-debugids",
   cache: false,
-  entry: { index: posix.join(__dirname, "..", "bundle.js") },
+  entry: { index: join(__dirname, "..", "bundle.js") },
   output: {
-    path: posix.join(__dirname, "..", "..", "out", "webpack5"),
+    path: join(__dirname, "..", "..", "out", "webpack5"),
     library: {
       type: "commonjs",
     },

From 178a3a1d3eb7e72b16c03bb3c75600e9185a029e Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 15:41:39 +0200
Subject: [PATCH 19/23] use move bundle.js into webpack dir

---
 .../debug-ids-already-injected/input/webpack5/bundle.js   | 2 ++
 .../input/webpack5/webpack.config.js                      | 8 ++++----
 2 files changed, 6 insertions(+), 4 deletions(-)
 create mode 100644 packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/bundle.js

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/bundle.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/bundle.js
new file mode 100644
index 00000000..74cb2663
--- /dev/null
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/bundle.js
@@ -0,0 +1,2 @@
+// eslint-disable-next-line no-console
+console.log("Hello world");
diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
index 68f39880..36977208 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
@@ -8,15 +8,15 @@ const __dirname = fileURLToPath(import.meta.url);
 console.log({
   __dirname,
   existsDirname: existsSync(__dirname),
-  posixInput: posix.join(__dirname, "..", "bundle.js"),
-  input: join(__dirname, "..", "bundle.js"),
-  outputPath: posix.join(__dirname, "..", "..", "out", "webpack5"),
+  posixInput: posix.join(__dirname, "bundle.js"),
+  input: join(__dirname, "bundle.js"),
+  outputPath: posix.join(__dirname, "..", "out", "webpack5"),
 });
 
 export default {
   devtool: "source-map-debugids",
   cache: false,
-  entry: { index: join(__dirname, "..", "bundle.js") },
+  entry: { index: join(__dirname, "bundle.js") },
   output: {
     path: join(__dirname, "..", "..", "out", "webpack5"),
     library: {

From 8ea60fa614a8c63e55bd5c118d00554baf5a5be5 Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 15:43:09 +0200
Subject: [PATCH 20/23] use basename

---
 .../input/webpack5/webpack.config.js                          | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
index 36977208..bd12b2c3 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
@@ -1,9 +1,9 @@
 import { sentryWebpackPlugin } from "@sentry/webpack-plugin";
-import { join, posix } from "path";
+import { join, posix, basename } from "path";
 import { fileURLToPath } from "url";
 import { existsSync } from "fs";
 
-const __dirname = fileURLToPath(import.meta.url);
+const __dirname = basename(fileURLToPath(import.meta.url));
 
 console.log({
   __dirname,

From a8e1ac3cb6800718a0a591bbc7a8cbe02ad0670c Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 17:17:55 +0200
Subject: [PATCH 21/23] dirname, not basename

---
 .../input/webpack5/webpack.config.js                          | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
index bd12b2c3..e8112636 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
@@ -1,9 +1,9 @@
 import { sentryWebpackPlugin } from "@sentry/webpack-plugin";
-import { join, posix, basename } from "path";
+import { join, posix, dirname } from "path";
 import { fileURLToPath } from "url";
 import { existsSync } from "fs";
 
-const __dirname = basename(fileURLToPath(import.meta.url));
+const __dirname = dirname(fileURLToPath(import.meta.url));
 
 console.log({
   __dirname,

From cd53aaab08b077d1d07d959bf229a5585b47f27c Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 17:21:50 +0200
Subject: [PATCH 22/23] start ci?


From 6c72029a6bfe5087fc1652dfd6a57d97f4bf599f Mon Sep 17 00:00:00 2001
From: Lukas Stracke <lukas.stracke@sentry.io>
Date: Thu, 9 Oct 2025 18:59:32 +0200
Subject: [PATCH 23/23] delete per-dir bundle.js, use fileUrlToPath everywhere

---
 .../input/rollup4/bundle.js                   |  2 --
 .../input/rollup4/inputFile.js                |  2 --
 .../input/rollup4/rollup.config.js            | 20 +++++--------------
 .../input/vite6/vite.config.js                |  5 ++++-
 .../input/webpack5/bundle.js                  |  2 --
 .../input/webpack5/webpack.config.js          | 13 ++----------
 6 files changed, 11 insertions(+), 33 deletions(-)
 delete mode 100644 packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/bundle.js
 delete mode 100644 packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/inputFile.js
 delete mode 100644 packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/bundle.js

diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/bundle.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/bundle.js
deleted file mode 100644
index 74cb2663..00000000
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/bundle.js
+++ /dev/null
@@ -1,2 +0,0 @@
-// eslint-disable-next-line no-console
-console.log("Hello world");
diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/inputFile.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/inputFile.js
deleted file mode 100644
index 74cb2663..00000000
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/inputFile.js
+++ /dev/null
@@ -1,2 +0,0 @@
-// eslint-disable-next-line no-console
-console.log("Hello world");
diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
index fae55104..1a528566 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/rollup4/rollup.config.js
@@ -1,24 +1,14 @@
 import { defineConfig } from "rollup";
 import { sentryRollupPlugin } from "@sentry/rollup-plugin";
-import { join, posix } from "path";
-import { existsSync, readdirSync } from "fs";
+import { join, dirname } from "path";
+import { fileURLToPath } from "url";
 
-const __dirname = new URL(".", import.meta.url).pathname;
-
-console.log({
-  __dirname,
-  input: "./bundle.js",
-  existsInput: existsSync(join(__dirname, "bundle.js")),
-  existsInputPosix: existsSync(posix.join(__dirname, "bundle.js")),
-  existsInputDumb: existsSync(`${__dirname}/bundle.js`),
-  outputPath: join(__dirname, "..", "..", "out", "rollup4"),
-  // allFilesInDirname: readdirSync(join(__dirname, ".")),
-});
+const __dirname = dirname(fileURLToPath(import.meta.url));
 
 export default defineConfig({
-  input: { index: "./bundle.js" },
+  input: { index: join(__dirname, "..", "bundle.js") },
   output: {
-    dir: join("..", "..", "out", "rollup4"),
+    dir: join(__dirname, "..", "..", "out", "rollup4"),
     sourcemap: true,
     sourcemapDebugIds: true,
   },
diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/vite6/vite.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/vite6/vite.config.js
index 0d763cdb..bb319442 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/vite6/vite.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/vite6/vite.config.js
@@ -1,6 +1,9 @@
 import { defineConfig } from "vite";
 import { sentryVitePlugin } from "@sentry/vite-plugin";
-import { join } from "path";
+import { join, dirname } from "path";
+import { fileURLToPath } from "url";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
 
 export default defineConfig({
   clearScreen: false,
diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/bundle.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/bundle.js
deleted file mode 100644
index 74cb2663..00000000
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/bundle.js
+++ /dev/null
@@ -1,2 +0,0 @@
-// eslint-disable-next-line no-console
-console.log("Hello world");
diff --git a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
index e8112636..ae1d0882 100644
--- a/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
+++ b/packages/integration-tests/fixtures/debug-ids-already-injected/input/webpack5/webpack.config.js
@@ -1,22 +1,13 @@
 import { sentryWebpackPlugin } from "@sentry/webpack-plugin";
-import { join, posix, dirname } from "path";
+import { join, dirname } from "path";
 import { fileURLToPath } from "url";
-import { existsSync } from "fs";
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 
-console.log({
-  __dirname,
-  existsDirname: existsSync(__dirname),
-  posixInput: posix.join(__dirname, "bundle.js"),
-  input: join(__dirname, "bundle.js"),
-  outputPath: posix.join(__dirname, "..", "out", "webpack5"),
-});
-
 export default {
   devtool: "source-map-debugids",
   cache: false,
-  entry: { index: join(__dirname, "bundle.js") },
+  entry: { index: join(__dirname, "..", "bundle.js") },
   output: {
     path: join(__dirname, "..", "..", "out", "webpack5"),
     library: {