Use Process.env instead of Oxygen.env

[cartogram]

Description

Fixes Shopify/hydrogen#1226 by populating process.env in our platforms/worker.ts and hydrogen middleware.

Additional context

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[jplhomer]

Unfortunately, it appears that Vite will find/replace any usage of process.env if the SSR target is a webworker aka our worker bundle: https://github.com/vitejs/vite/blob/c68db4d7ad2c1baee41f280b34ae89a85ba0373d/packages/vite/src/node/plugins/define.ts#L51

This means all process.env instances are wiped from server components 😞

Marking this as blocked until we can find a workaround.

[benjaminsehl]

@wizardlyhel @blittle — should we close this PR in favour of import.meta?

[wizardlyhel]

@frandiox import.meta is a vite thing right?

[blittle]

@wizardlyhel @blittle — should we close this PR in favour of import.meta?

It is a vite thing. I'm wondering how it gets bundled / compiled, because runtimes (vercel, netlify, cloudflare, etc) aren't going to have it defined.

[frandiox]

import.meta is a standard, but import.meta.env is added by Vite. It basically replaces any matches of this by its value at build time (i.e. inlines values in the bundle).

I remember suggesting adding a custom import.meta.secrets.XYZ for the private variables that would be compiled to process.env.XYZ or Oxygen.env.XYZ at build time. Not sure if feasible/desirable, though.

[blittle]

It's just really hard to know what to compile to, because each runtime does env variables slightly different. Which is why we are pushing for some sort of unification standard: WinterTC55/environment-metadata#1

I guess the CLI could have an option to compile to different runtime targets? Vercel, cloudflare, oxygen, etc?

[benjaminsehl]

Now tracking in #1879