adapter-static documentation references process.env.NODE_ENV which no longer works

[Glench]

Describe the bug

When using the example code in this section of the README, process.env.NODE_ENV is undefined when access in svelte.config.js.

It'd be great if this section of the README was updated with the correct code that would make Github Pages work in dev and production modes, for example. I tried to use vite's import.meta.env but that didn't have the required information either unfortunately.

Reproduction

You can test this with a console.log(process.env.NODE_ENV) in svelte.config.js. The bug is that it's undefined whereas before it was development when run with npm run dev.

Logs

No response

System Info

System:
    OS: macOS 12.6
    CPU: (4) x64 Intel(R) Core(TM) i3-1000NG4 CPU @ 1.10GHz
    Memory: 163.72 MB / 8.00 GB
    Shell: 3.2.57 - /bin/bash
  Binaries:
    Node: 17.5.0 - /usr/local/bin/node
    Yarn: 1.22.17 - /usr/local/bin/yarn
    npm: 8.4.1 - /usr/local/bin/npm
  Browsers:
    Brave Browser: 90.1.24.82
    Chrome: 106.0.5249.119
    Edge: 107.0.1418.24
    Firefox: 105.0.3
    Safari: 16.0
  npmPackages:
    @sveltejs/adapter-auto: next => 1.0.0-next.85
    @sveltejs/adapter-static: ^1.0.0-next.46 => 1.0.0-next.46
    @sveltejs/kit: next => 1.0.0-next.526
    svelte: ^3.44.0 => 3.52.0
    vite: ^3.1.0 => 3.2.1

Severity

blocked

Additional Information

No response