Port github-authentication extension to use esbuild

extensions/github-authentication/esbuild.browser.mts

@@ -0,0 +1,39 @@
+/*---------------------------------------------------------------------------------------------
+ *  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],
+	},
+}, process.argv);