NODE_ENV explicitly specified

[or2e]

Describe the feature

I have experienced that when running a build project using node ./.output/server/index.mjs vue.js was running in dev mode, because if you don't define NODE_ENV=production node ./.output/server/index.mjs, then you will get a dev build of vue.js (by default) https://github.com/vuejs/core/blob/main/packages/runtime-core/index.js

Do you think it is necessary to add this note to the doc? (https://nuxt.com/docs/getting-started/deployment#nodejs-server)

Additional information

• Would you be willing to help implement this feature?
• Could this feature be implemented as a module?

Final checks

• Read the contribution guide.
• Check existing discussions and issues.

[danielroe]

cc: @pi0 It seems we have a regression with tracing export conditions as the Vue dev build is also getting picked.

reproduction from linked issue: https://stackblitz.com/edit/nuxt-examples-tnmdbb?file=package.json.

[pi0]

Checking reproduction, it seems that @vue/runtime-core/package.json is not using any export conditions (was it before?) that nitro externals tracer could rewrite for. Since @vue/runtime-core/index.js uses two require for two builds, nitro also (correctly) traces two builds so I don't think it is a bug but something definitely worth to fix.

On vue side, we had been tracing it for a long time for supporting exports field in their package.json @danielroe do you remember why latestly it wasn't introduced?

For a solution in Nitro we can:

• Add NODE_ENV by default in runtime entry for externals using it (Inject NODE_ENV with production value by default for production runtime unjs/nitro#2046)
• Add a new feature to allow manually rewriting written externals files in a hook and then use it for nuxt>vue deps (Allow mocking and aliasing externals unjs/nitro#1118)

[danielroe]

This is now resolved (for vue) in the latest release of @vue/runtime-core! 🎉

See bundle size diff in https://github.com/nuxt/nuxt/pull/25036/files#diff-04a7585c5d6ddd5cf80321c69bc6e07cd85e9e86ae35fa5f9c036651f137c312.