index.js

// config/product-specific/index.js
const config = require(`@/config/product-specific/${process.env.VUE_APP_DEV_PRODUCT}`);

export default config.default;

// App.vue
import config from '@/config/product-specific';

export default defineComponent({
  setup() {
    const products = computed(() => config.products);

    return {
      products
    };
  }
});