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Title: NestJS + GraphQL i18n Translations Not Loading Correctly

Description: I am working on a NestJS + GraphQL application and trying to set up internationalization (i18n) using nestjs-i18n. However, translations are either not being applied correctly or not loading as expected. The log statement this.i18nService.getSupportedLanguages() returns an empty array ([]), which suggests that the translations are not being loaded properly.

Setup

I have configured the i18n module in my app.module.ts as follows:

app.module.ts

@Module({
  imports: [
    I18nModule.forRootAsync({
      useFactory: () => ({
        fallbackLanguage: 'en',
        loader: I18nJsonLoader,
        loaderOptions: {
          path: join(__dirname, '/i18n/'),
          watch: true,
        },
      }),
      resolvers: [
        { use: QueryResolver, options: ['lang'] },
        AcceptLanguageResolver,
        new HeaderResolver(['x-lang']),
      ],
    }),
  ],
})
export class AppModule {}

Interceptor for Translating Response Messages

I am using an interceptor to modify response messages dynamically:

translate.interceptor.ts

import {
  CallHandler,
  ExecutionContext,
  Injectable,
  NestInterceptor,
} from '@nestjs/common';
import { GqlExecutionContext } from '@nestjs/graphql';
import { I18nService } from 'nestjs-i18n';
import { Observable } from 'rxjs';
import { mergeMap } from 'rxjs/operators';

@Injectable()
export class TranslateInterceptor implements NestInterceptor {
  constructor(private readonly i18nService: I18nService) {}

  intercept(context: ExecutionContext, next: CallHandler): Observable<any> {
    const ctx = GqlExecutionContext.create(context);
    const req = ctx.getContext().req;
    const lang = req.headers['accept-language'] || 'pt-BR';

    return next.handle().pipe(
      mergeMap(async (responseData) => {
        if (typeof responseData === 'object' && responseData.message) {
          console.log(
            '

                本文标签：
                nodejsIssue with i18n Translation in NestJSGraphQLStack Overflow

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