feat: expose HeadersArgs & HeadersFunctionArgs type

[mcansh]

add HeadersFunctionArgs (and HeadersArgs) type to be consistent with ActionArgs, LoaderArgs, DataFunctionArgs and allows for using function

import type { HeadersFunctionArgs } from '@remix-run/*';
export function headers({ loaderHeaders }: HeadersFunctionArgs) {
  return {
    "x-my-custom-thing": loaderHeaders.get("x-my-custom-thing") || "fallback"
  }
}

Closes: #

• Docs
• Tests

Testing Strategy:

[changeset-bot]

🦋 Changeset detected

Latest commit: 2d49c81

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

This PR includes changesets to release 18 packages

Name	Type
remix	Patch
@remix-run/cloudflare	Patch
@remix-run/deno	Patch
@remix-run/dev	Patch
@remix-run/eslint-config	Patch
@remix-run/node	Patch
@remix-run/serve	Patch
@remix-run/server-runtime	Patch
@remix-run/cloudflare-pages	Patch
@remix-run/cloudflare-workers	Patch
create-remix	Patch
@remix-run/css-bundle	Patch
@remix-run/architect	Patch
@remix-run/express	Patch
@remix-run/netlify	Patch
@remix-run/testing	Patch
@remix-run/vercel	Patch
@remix-run/react	Patch

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[brophdawg11]

To avoid having 2 aliases of the same thing, I removed HeadersFunctionArgs and we only have HeadersArgs to be consistent with LoaderArgs/ActionArgs. Personally I don't think DataFunctionArgs should have ever been exported since it's really an implementation detail.

The agnostic router uses LoaderFunctionArgs and ActionFunctionArgs so I don't think we need to leak that naming scheme out through Remix.

[github-actions]

🤖 Hello there,

We just published version v0.0.0-nightly-f93d18a-20230517 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version v0.0.0-nightly-aa2e31b-20230518 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!