Improve error handling in newPackage command

Refactored the extension's newPackage command to separate error handling for directory and file creation, providing more specific error messages. Also updated the default file content in package.json to include a newline.

Author: Mqxx

package.json

@@ -29,7 +29,7 @@
       "properties": {
         "newPackage.fileContent": {
           "type": "string",
-          "default": "export {};",
+          "default": "export {};\n",
           "markdownDescription": "Default content for the created file.\nSupported variables:\n- `${fileName}` - The file name\n- `${packageName}` - The package name",
           "scope": "resource",
           "editPresentation": "multilineText"

src/extension.ts

@@ -3,57 +3,57 @@ import { mkdir, writeFile } from 'node:fs/promises';
 import { join } from 'node:path';
 
 export async function activate(context: vscode.ExtensionContext) {
-    const disposable = vscode.commands.registerCommand('extension.newPackage', async (uri: vscode.Uri) => {
-        try {
-            // Zielverzeichnis ermitteln
-            let targetDir: string;
-            if (uri && uri.fsPath) {
-                targetDir = uri.fsPath;
-            } else if (vscode.workspace.workspaceFolders && vscode.workspace.workspaceFolders.length > 0) {
-                targetDir = vscode.workspace.workspaceFolders[0].uri.fsPath;
-            } else {
-                vscode.window.showErrorMessage('No workspace folder open.');
-                return;
-            }
-
-            // Ordnername abfragen
-            const folderName = await vscode.window.showInputBox({
-                prompt: 'Enter the new package name',
-                placeHolder: 'my_package'
-            });
-
-            if (!folderName) {
-                return;
-            }
-
-            const config = vscode.workspace.getConfiguration('newPackage');
-            const fileNameSetting = config.get<string>('fileName', 'index.ts');
-            const fileContentTemplate = config.get<string>('fileContent', '');
-
-            const packagePath = join(targetDir, folderName);
-
-            // Ordner anlegen
-            await mkdir(packagePath, { recursive: true });
-
-            // Template-Variablen ersetzen
-            const fileContent = fileContentTemplate
-                .replace(/\$\{fileName\}/g, fileNameSetting)
-                .replace(/\$\{packageName\}/g, folderName);
-
-            // Datei schreiben
-            const filePath = join(packagePath, fileNameSetting);
-            await writeFile(filePath, fileContent, { encoding: 'utf8' });
-
-            // Datei im Editor öffnen
-            const doc = await vscode.workspace.openTextDocument(filePath);
-            await vscode.window.showTextDocument(doc);
-
-        } catch (error) {
-            vscode.window.showErrorMessage(`Failed to create package: ${String(error)}`);
-        }
+  const disposable = vscode.commands.registerCommand('extension.newPackage', async (uri: vscode.Uri) => {
+    let targetDir: string;
+    if (uri && uri.fsPath) {
+      targetDir = uri.fsPath;
+    } else if (vscode.workspace.workspaceFolders && vscode.workspace.workspaceFolders.length > 0) {
+      targetDir = vscode.workspace.workspaceFolders[0].uri.fsPath;
+    } else {
+      vscode.window.showErrorMessage('No workspace folder open.');
+      return;
+    }
+
+    const folderName = await vscode.window.showInputBox({
+      prompt: 'Enter the new package name',
+      placeHolder: 'my_package'
     });
 
-    context.subscriptions.push(disposable);
+    if (!folderName) {
+      return;
+    }
+
+    const config = vscode.workspace.getConfiguration('newPackage');
+    const fileNameSetting = config.get<string>('fileName', 'index.ts');
+    const fileContentTemplate = config.get<string>('fileContent', '');
+
+    const packagePath = join(targetDir, folderName);
+
+    try {
+      await mkdir(packagePath, { recursive: true });
+    } catch (error) {
+      vscode.window.showErrorMessage('Failed to create directory:\n${String(error)}`);');
+      return;
+    }
+
+    const fileContent = fileContentTemplate
+      .replace(/\$\{fileName\}/g, fileNameSetting)
+      .replace(/\$\{packageName\}/g, folderName);
+      
+    const filePath = join(packagePath, fileNameSetting);
+    
+    try {
+      await writeFile(filePath, fileContent, { encoding: 'utf8' });
+    } catch (error) {
+      vscode.window.showErrorMessage('Failed to create file:\n${String(error)}`);');
+      return;
+    }
+
+    const doc = await vscode.workspace.openTextDocument(filePath);
+    await vscode.window.showTextDocument(doc);
+  });
+
+  context.subscriptions.push(disposable);
 }
 
 export function deactivate() {}