On `NODE_ENV` in `/rollup.config.mjs`

Development
1

Good day!

In /rollup.config.mjs, we have

const NODE_ENV = process.env.NODE_ENV || 'development';

(which then pasted to the @rollup/plugin-replace plugin).

Which does it mean?

  1. The environment we are building in.
  2. The environment we are packing for.

(by traces of this)

Thanks!