fix(qwik-city): support Deno as package manager for production builds

[ianlet]

Summary

Fixes #8364. When using Deno to manage dependencies and run builds (deno task build.client + deno task build.server), two issues prevented a working production build:

1. Client manifest not passed to server build — The Vite plugin's temp file mechanism was gated on node/bun only, so Deno builds got null manifests and Code(31) errors.
2. SSG stubbed out — The Deno SSG entry called Deno.exit(1) instead of delegating to the Node implementation, which works under Deno's Node compatibility layer.

Changes

• Extract hasNodeCompat() predicate to include deno in all 4 env gates in the Vite plugin (vite.ts)
• Route Deno to the Node SSG module at runtime, same as Bun (static/index.ts)
• Remove dead static/deno/ stub and its build step (scripts/qwik-city.ts)

Test plan

• Unit tests pass (pnpm test.unit) — 771 tests, including 2 new Deno-specific tests
• pnpm build --qwik --qwikcity --dev succeeds
• Validated end-to-end with a Deno project: client build writes manifest, server build reads it, SSG runs successfully — all without patches

[changeset-bot]

🦋 Changeset detected

Latest commit: 0314b61

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 5 packages

Name	Type
@builder.io/qwik	Patch
@builder.io/qwik-city	Patch
eslint-plugin-qwik	Patch
@builder.io/qwik-react	Patch
create-qwik	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[promptless-for-oss]

@ianlet ✅ Promptless drafted a docs update: #8386

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@builder.io/qwik@8385

npm i https://pkg.pr.new/@builder.io/qwik-city@8385

npm i https://pkg.pr.new/eslint-plugin-qwik@8385

npm i https://pkg.pr.new/create-qwik@8385

commit: 0314b61

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[shairez]

@ianlet do you know what this promptless app is by any chance?
It started commenting on our PRs after this PR was created

[ianlet]

@shairez nope, no idea. I wrote to you about it in private.

[wmertens]

This looks good to me, but in v2 this code has seen some changes and I won't try to port it.

So I'm ok with merging if you first create a PR to add this for v2 @ianlet ?

[ianlet]

@wmertens will do 🫡

[Copilot]

Pull request overview

This PR fixes Qwik City production builds when dependencies/builds are run under Deno by treating Deno as Node-compatible for the Vite manifest handoff and by routing Deno SSG to the existing Node implementation.

Changes:

• Update the Qwik Vite plugin to consider deno a Node-compatible environment for temp-manifest read/write logic.
• Make @builder.io/qwik-city/static resolve Deno to the Node SSG entry module (same behavior as Bun).
• Remove the unused Deno SSG stub and its build step, and add Deno-focused unit coverage for the Vite plugin config behavior.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
scripts/qwik-city.ts	Removes the build step for the deleted Deno SSG stub bundle.
packages/qwik/src/optimizer/src/plugins/vite.unit.ts	Adds Deno-specific unit tests and enables mocking sys.env as deno.
packages/qwik/src/optimizer/src/plugins/vite.ts	Centralizes Node-compat detection and includes deno in manifest-passing and vendor-scan env gates.
packages/qwik-city/src/static/index.ts	Routes Deno SSG to the Node entry module instead of a Deno-specific bundle.
packages/qwik-city/src/static/deno/index.ts	Deletes the previous stub implementation that exited with failure.
.changeset/deno-production-builds.md	Adds a changeset documenting the Deno production build fix.

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[wmertens]