first commit

myteamwallet_backend/src/config/app.config.ts

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+import { registerAs } from '@nestjs/config';
+
+export default registerAs('app', () => ({
+  nodeEnv: process.env.NODE_ENV,
+  name: process.env.APP_NAME,
+  workingDirectory: process.env.PWD || process.cwd(),
+  frontendDomain: process.env.FRONTEND_DOMAIN,
+  backendDomain: process.env.BACKEND_DOMAIN,
+  port: parseInt(process.env.APP_PORT || process.env.PORT, 10) || 3000,
+  apiPrefix: process.env.API_PREFIX || 'api',
+  fallbackLanguage: process.env.APP_FALLBACK_LANGUAGE || 'en',
+  headerLanguage: process.env.APP_HEADER_LANGUAGE || 'x-custom-lang',
+}));