main and program are classes

src/services/i18n.service.ts

@@ -0,0 +1,19 @@
+import * as fs from 'fs';
+import * as path from 'path';
+
+import { I18nService as BaseI18nService } from 'jslib/services/i18n.service';
+
+export class I18nService extends BaseI18nService {
+    constructor(systemLanguage: string, localesDirectory: string) {
+        super(systemLanguage, localesDirectory, (formattedLocale: string) => {
+            const filePath = path.join(__dirname, this.localesDirectory + '/' + formattedLocale + '/messages.json');
+            const localesJson = fs.readFileSync(filePath, 'utf8');
+            const locales = JSON.parse(localesJson.replace(/^\uFEFF/, '')); // strip the BOM
+            return Promise.resolve(locales);
+        });
+
+        this.supportedTranslationLocales = [
+            'en'
+        ];
+    }
+}

src/services/nodePlatformUtils.service.ts

@@ -50,7 +50,9 @@ export class NodePlatformUtilsService implements PlatformUtilsService {
         return Utils.getHostname(uriString);
     }
 
-    isViewOpen: () => false;
+    isViewOpen() {
+        return false;
+    }
 
     launchUri(uri: string, options?: any): void { }