feat: add signal property to request in vite, node environments

[orisrightpaw]

Gives routes an AbortSignal (as present in the Request object) to know when the other end hangs up prematurely.

Fixes #12823 for vite dev+preview and @sveltejs/adapter-node

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[changeset-bot]

🦋 Changeset detected

Latest commit: 1396477

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

This PR includes changesets to release 2 packages

Name	Type
@sveltejs/adapter-node	Minor
@sveltejs/kit	Minor

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[svelte-docs-bot]

Preview: https://svelte-dev-git-preview-kit-13895-svelte.vercel.app/

[orisrightpaw]

Oops! This is a change to kit core too, not just the node adapter. 🤦

[orisrightpaw]

Demonstration repository

[benmccann]

this doesn't actually touch the adapter-node code at all

Suggested change

'@sveltejs/adapter-node': minor

[Conduitry]

It does touch @sveltejs/kit/node, though, and the Node adapter is bundled, so we need to re-build it and release a new version.

[Conduitry]

On that note, @sveltejs/kit/node's getRequest is also used in local development, in preview mode, and in production in the Vercel adapter. Is this going to have any impact on those?

[orisrightpaw]

On that note, @sveltejs/kit/node's getRequest is also used in local development, in preview mode, and in production in the Vercel adapter. Is this going to have any impact on those?

Yes, it would. Apologies for not being clearer. Though, I wasn't aware that the vercel adapter used getRequest. I'll mark @sveltejs/adapter-vercel for a minor version, as well.

[benmccann]

this would need some documentation. possibly in the adapter-node docs

[orisrightpaw]

this would need some documentation. possibly in the adapter-node docs

Alright. I'll see what I can do.

[orisrightpaw]

After a bit of testing behavior in Vercel, I couldn't get the request to hang up early without a body. It works fine on POST requests with data, but will not work on GET requests. I guess it's just a Vercel thing...? Someone else might be able to get it to work, but from what I can see, I don't think Vercel will tell you when the client cancels the request. I've removed the Vercel package from the changeset.

On another note though, I squashed my commits and wrote some documentation. It's under the adapter-node docs, as @benmccann suggested.