Unexpected behavior when getting a value from .env file for expireIn property - auth.module.ts

auth.module.ts

auth.module.ts
import { forwardRef, Module } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import { JwtModule } from '@nestjs/jwt';
import { UsersModule } from 'src/users/users.module';
import { AuthController } from './auth.controller';
import { AuthService } from './auth.service';

@Module({
  imports: [
    forwardRef(() => UsersModule),
    JwtModule.registerAsync({
      // imports: [ConfigModule],
      inject: [ConfigService],
      useFactory: async (configService: ConfigService) => ({
        secret: configService.get('JWT_SECRET'),
        signOptions: {
          expiresIn: configService.get<number>('JWT_EXP_H', 60),
        },
      }),
    }),
  ],
  controllers: [AuthController],
  providers: [AuthService],
  exports: [JwtModule],
})
export class AuthModule {}