[SSG] No `200.html` is being rendered

Environment

RootDir: /sandbox Nuxt project info:

---

• Operating System: Linux
• Node Version: v14.18.1
• Nuxt Version: 3.0.0-rc.3
• Package Manager: yarn@1.22.17
• Builder: vite
• User Config: -
• Runtime Modules: -
• Build Modules: -

---

Reproduction

1. Open the sandbox (and possibly clone locally)
2. Run yarn generate
3. See that a fallback file is missing

Describe the bug

When using target: 'static', I expected that a 200.html (or differently named) fallback file is being rendered. Unfortunately, no such file is being generated at the moment.

Even with generate.fallback set to true or 200.html, no file is present after the generation process.

Additional context

_Originally posted by @edwh in https://github.com/nuxt/framework/discussions/4967_

Logs

No response

[manniL]

I currently use a workaround, injecting the route /404.html to the routes to generate.

But this will render the 404.html with the error layout “as is” and won’t allow SPA-like fallback. Which means solving “only” half of the issue.

[hacknug]

There’s also an issue with the types for the fallback property.

According to the inline documentation the value should be boolean | string but it’s actually just string. You can reproduce this by changing the value on the sandbox OP provided.

I looked for the types definition in the repo but I couldn’t find it. If anyone knows where they are, I’ll gladly make the change myself (if this is something that’s manually generated).