diff --git a/extensions/github-authentication/.vscodeignore b/extensions/github-authentication/.vscodeignore
index 0f1797efe95..fd8583ab8d1 100644
--- a/extensions/github-authentication/.vscodeignore
+++ b/extensions/github-authentication/.vscodeignore
@@ -3,7 +3,7 @@ src/**
 !src/common/config.json
 out/**
 build/**
-extension.webpack.config.js
-extension-browser.webpack.config.js
+esbuild.mts
+esbuild.browser.mts
 tsconfig*.json
 package-lock.json
diff --git a/extensions/github-authentication/esbuild.browser.mts b/extensions/github-authentication/esbuild.browser.mts
new file mode 100644
index 00000000000..20745e1d087
--- /dev/null
+++ b/extensions/github-authentication/esbuild.browser.mts
@@ -0,0 +1,40 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+import * as path from 'node:path';
+import type { Plugin } from 'esbuild';
+import { run } from '../esbuild-extension-common.mts';
+
+const srcDir = path.join(import.meta.dirname, 'src');
+const outDir = path.join(import.meta.dirname, 'dist', 'browser');
+
+/**
+ * Plugin that rewrites `./node/*` imports to `./browser/*` for the web build,
+ * replacing the platform-specific implementations with their browser equivalents.
+ */
+const platformModulesPlugin: Plugin = {
+	name: 'platform-modules',
+	setup(build) {
+		build.onResolve({ filter: /\/node\// }, args => {
+			if (args.kind !== 'import-statement' || !args.resolveDir) {
+				return;
+			}
+			const remapped = args.path.replace('/node/', '/browser/');
+			return build.resolve(remapped, { resolveDir: args.resolveDir, kind: args.kind });
+		});
+	},
+};
+
+run({
+	platform: 'browser',
+	entryPoints: {
+		'extension': path.join(srcDir, 'extension.ts'),
+	},
+	srcDir,
+	outdir: outDir,
+	additionalOptions: {
+		plugins: [platformModulesPlugin],
+		tsconfig: path.join(import.meta.dirname, 'tsconfig.browser.json'),
+	},
+}, process.argv);
diff --git a/extensions/github-authentication/extension.webpack.config.js b/extensions/github-authentication/esbuild.mts
similarity index 51%
rename from extensions/github-authentication/extension.webpack.config.js
rename to extensions/github-authentication/esbuild.mts
index 166c1d8b1e3..2b75ca703da 100644
--- a/extensions/github-authentication/extension.webpack.config.js
+++ b/extensions/github-authentication/esbuild.mts
@@ -2,12 +2,17 @@
  *  Copyright (c) Microsoft Corporation. All rights reserved.
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
-// @ts-check
-import withDefaults from '../shared.webpack.config.mjs';
+import * as path from 'node:path';
+import { run } from '../esbuild-extension-common.mts';
 
-export default withDefaults({
-	context: import.meta.dirname,
-	entry: {
-		extension: './src/extension.ts',
+const srcDir = path.join(import.meta.dirname, 'src');
+const outDir = path.join(import.meta.dirname, 'dist');
+
+run({
+	platform: 'node',
+	entryPoints: {
+		'extension': path.join(srcDir, 'extension.ts'),
 	},
-});
+	srcDir,
+	outdir: outDir,
+}, process.argv);
diff --git a/extensions/github-authentication/extension-browser.webpack.config.js b/extensions/github-authentication/extension-browser.webpack.config.js
deleted file mode 100644
index 70a7fd87cf4..00000000000
--- a/extensions/github-authentication/extension-browser.webpack.config.js
+++ /dev/null
@@ -1,24 +0,0 @@
-/*---------------------------------------------------------------------------------------------
- *  Copyright (c) Microsoft Corporation. All rights reserved.
- *  Licensed under the MIT License. See License.txt in the project root for license information.
- *--------------------------------------------------------------------------------------------*/
-// @ts-check
-import path from 'path';
-import { browser as withBrowserDefaults } from '../shared.webpack.config.mjs';
-
-export default withBrowserDefaults({
-	context: import.meta.dirname,
-	node: false,
-	entry: {
-		extension: './src/extension.ts',
-	},
-	resolve: {
-		alias: {
-			'uuid': path.resolve(import.meta.dirname, 'node_modules/uuid/dist/esm-browser/index.js'),
-			'./node/authServer': path.resolve(import.meta.dirname, 'src/browser/authServer'),
-			'./node/crypto': path.resolve(import.meta.dirname, 'src/browser/crypto'),
-			'./node/fetch': path.resolve(import.meta.dirname, 'src/browser/fetch'),
-			'./node/buffer': path.resolve(import.meta.dirname, 'src/browser/buffer'),
-		}
-	}
-});
diff --git a/extensions/github-authentication/package.json b/extensions/github-authentication/package.json
index e343bb19900..28877821ed1 100644
--- a/extensions/github-authentication/package.json
+++ b/extensions/github-authentication/package.json
@@ -79,9 +79,9 @@
   "browser": "./dist/browser/extension.js",
   "scripts": {
     "compile": "gulp compile-extension:github-authentication",
-    "compile-web": "npx webpack-cli --config extension-browser.webpack.config --mode none",
+    "compile-web": "node esbuild.browser.mts",
     "watch": "gulp watch-extension:github-authentication",
-    "watch-web": "npx webpack-cli --config extension-browser.webpack.config --mode none --watch --info-verbosity verbose",
+    "watch-web": "node esbuild.browser.mts --watch",
     "vscode:prepublish": "npm run compile"
   },
   "dependencies": {
diff --git a/extensions/github-authentication/src/browser/authServer.ts b/extensions/github-authentication/src/browser/authServer.ts
index 60b53c713a8..b53642ee74a 100644
--- a/extensions/github-authentication/src/browser/authServer.ts
+++ b/extensions/github-authentication/src/browser/authServer.ts
@@ -10,3 +10,9 @@ export function startServer(_: any): any {
 export function createServer(_: any): any {
 	throw new Error('Not implemented');
 }
+
+export class LoopbackAuthServer {
+	constructor(..._args: any[]) {
+		throw new Error('Not implemented');
+	}
+}
diff --git a/extensions/github-authentication/tsconfig.browser.json b/extensions/github-authentication/tsconfig.browser.json
new file mode 100644
index 00000000000..233289b8bd5
--- /dev/null
+++ b/extensions/github-authentication/tsconfig.browser.json
@@ -0,0 +1,8 @@
+{
+	"extends": "./tsconfig.json",
+	"compilerOptions": {},
+	"exclude": [
+		"./src/node/**",
+		"./src/test/**"
+	]
+}