Abstracts realpath handling for browser and Node environments

(#1328)

Introduces environment-specific implementations for resolving real file system paths, enabling the codebase to handle symlink resolution in Node.js while providing a placeholder for browsers.

Author: sergeibbb

src/env/browser/realpath.ts

@@ -0,0 +1,6 @@
+export function realpath(_path: string): Promise<string> {
+	// Most likely clients of this function will check for `not-isWeb` before calling,
+	// So we probably should never get here.
+	// But even if we do, cliens should be ready to handle errors of path resolving.
+	return Promise.reject(new Error('Not implemented'));
+}

src/env/node/realpath.ts

@@ -0,0 +1,6 @@
+import { realpath as fs_realpath } from 'fs';
+import { promisify } from 'util';
+
+export function realpath(path: string): Promise<string> {
+	return promisify(fs_realpath)(path);
+}

src/git/gitUri.ts

@@ -1,5 +1,6 @@
 import { Uri } from 'vscode';
 import { isWeb } from '@env/platform';
+import { realpath } from '@env/realpath';
 import { getQueryDataFromScmGitUri } from '../@types/vscode.git.uri';
 import { Schemes } from '../constants';
 import { Container } from '../container';
@@ -254,8 +255,7 @@ export class GitUri extends (Uri as any as UriEx) {
 		// Check for symbolic links (Node.js only)
 		if (configuration.get('advanced.realpath') && !isWeb && uri.scheme === 'file') {
 			try {
-				const { realpathSync } = await import('fs');
-				const realPath = realpathSync(uri.fsPath);
+				const realPath = await realpath(uri.fsPath);
 				if (uri.fsPath !== realPath) {
 					const newUri = Uri.file(realPath);
 					return await this.fromUri(newUri);