From bf729fa50adbc422b858ba2dcb138357b6a5f7f6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Moreno?= <joaomoreno@users.noreply.github.com>
Date: Thu, 29 Jan 2026 19:27:20 +0100
Subject: [PATCH] strip out git askpass sourcemap footer (#291673)

fixes #282020
---
 build/lib/extensions.ts                    | 23 +++++++++++++++++-----
 extensions/git/extension.webpack.config.js |  2 ++
 2 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/build/lib/extensions.ts b/build/lib/extensions.ts
index 24462a3b26e..e06f1510a66 100644
--- a/build/lib/extensions.ts
+++ b/build/lib/extensions.ts
@@ -98,14 +98,22 @@ function fromLocalWebpack(extensionPath: string, webpackConfigFileName: string,
 	const result = es.through();
 
 	const packagedDependencies: string[] = [];
+	const stripOutSourceMaps: string[] = [];
 	const packageJsonConfig = require(path.join(extensionPath, 'package.json'));
 	if (packageJsonConfig.dependencies) {
-		const webpackRootConfig = require(path.join(extensionPath, webpackConfigFileName)).default;
+		const webpackConfig = require(path.join(extensionPath, webpackConfigFileName));
+		const webpackRootConfig = webpackConfig.default;
 		for (const key in webpackRootConfig.externals) {
 			if (key in packageJsonConfig.dependencies) {
 				packagedDependencies.push(key);
 			}
 		}
+
+		if (webpackConfig.StripOutSourceMaps) {
+			for (const filePath of webpackConfig.StripOutSourceMaps) {
+				stripOutSourceMaps.push(filePath);
+			}
+		}
 	}
 
 	// TODO: add prune support based on packagedDependencies to vsce.PackageManager.Npm similar
@@ -177,10 +185,15 @@ function fromLocalWebpack(extensionPath: string, webpackConfigFileName: string,
 						// * rewrite sourceMappingURL
 						// * save to disk so that upload-task picks this up
 						if (path.extname(data.basename) === '.js') {
-							const contents = (data.contents as Buffer).toString('utf8');
-							data.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, function (_m, g1) {
-								return `\n//# sourceMappingURL=${sourceMappingURLBase}/extensions/${path.basename(extensionPath)}/${relativeOutputPath}/${g1}`;
-							}), 'utf8');
+							if (stripOutSourceMaps.indexOf(data.relative) >= 0) { // remove source map
+								const contents = (data.contents as Buffer).toString('utf8');
+								data.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, ''), 'utf8');
+							} else {
+								const contents = (data.contents as Buffer).toString('utf8');
+								data.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, function (_m, g1) {
+									return `\n//# sourceMappingURL=${sourceMappingURLBase}/extensions/${path.basename(extensionPath)}/${relativeOutputPath}/${g1}`;
+								}), 'utf8');
+							}
 						}
 
 						this.emit('data', data);
diff --git a/extensions/git/extension.webpack.config.js b/extensions/git/extension.webpack.config.js
index 15cf273015b..34f801e2eca 100644
--- a/extensions/git/extension.webpack.config.js
+++ b/extensions/git/extension.webpack.config.js
@@ -13,3 +13,5 @@ export default withDefaults({
 		['git-editor-main']: './src/git-editor-main.ts'
 	}
 });
+
+export const StripOutSourceMaps = ['dist/askpass-main.js'];