Reflect Metadata wasnt imported into production build

Environment

---

• Operating System: Darwin
• Node Version: v18.6.0
• Nuxt Version: 3.0.0-rc.8
• Package Manager: yarn@1.22.19
• Builder: vite
• User Config: modern, alias, css, runtimeConfig, httpApi, modules, buildModules, vite, build, intlify
• Runtime Modules: @pinia/nuxt@0.3.1, ./modules/uikit, ./api/module, @vueuse/nuxt@8.9.4
• Build Modules: floating-vue/nuxt

---

Reproduction

I was using reflect-metdata in global middleware in nuxt-rc6 and it was working perfectly. After upgrade to rc8 i face issue after production build (using nuxt build) and nuxi preview i see next error:

[nuxt] [request error] [unhandled] [500] Reflect.getMetadata is not a function

Describe the bug

I was using reflect-metdata in global middleware in nuxt-rc6 and it was working perfectly. After upgrade to rc8 i face issue after production build (using nuxt build) and nuxi preview i see next error:

[nuxt] [request error] [unhandled] [500] Reflect.getMetadata is not a function

Additional context

No response

Logs

No response

[oleghalin]

@dmitryT93 yeah, you need to make dummy check for import

import * as Reflect from "reflect-metadata";

export default () => {
  if (!Reflect) {
    throw new Error("Reflect wasnt imported");
  }
};

After this change builder works properly and dont treeshake it

[danielroe]

Please see instead https://github.com/nuxt/framework/issues/2561#issuecomment-1233047751.