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feat: provide rss and atom feeds for the blog - #2562
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| Layer / File(s) | Summary |
|---|---|
Feed generation and routes package.json, server/utils/feeds.ts, server/routes/blog/rss.xml.get.ts, server/routes/blog/atom.xml.get.ts |
Adds the feed dependency, builds feed data from non-draft posts, and serves RSS 2.0 and Atom 1.0 output. |
Feed links and response configuration app/pages/blog/index.vue, nuxt.config.ts |
Adds RSS and Atom alternate links. Configures prerendering, content types, CORS headers, and handling for the generated blog posts file. |
Feed validation test/e2e/feeds.spec.ts |
Checks alternate links on /blog and validates content types, response bodies, and CORS headers for both endpoints. |
Sequence Diagram(s)
sequenceDiagram
participant Browser
participant BlogPage
participant FeedRoute
participant getFeed
Browser->>BlogPage: load /blog
BlogPage-->>Browser: return RSS and Atom alternate links
Browser->>FeedRoute: request selected feed
FeedRoute->>getFeed: request RSS or Atom output
getFeed-->>FeedRoute: return populated feed
FeedRoute-->>Browser: return RSS or Atom XML
Possibly related PRs
- npmx-dev/npmx.dev#3238: Changes release-post author metadata and content that the feed uses for its entries.
Suggested reviewers: alexdln
Merge Risk: 
Moderate · up to 14d80
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The RSS feed contains invalid author fields that strict readers may reject, and the tests do not validate feed content. Correct the author serialization and strengthen body validation before merging.
Security architecture risk: 
Low · up to fc076
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The new feeds expose public blog metadata through two narrowly scoped endpoints, with explicit draft filtering and no request-controlled data access. No concrete security regression was identified. Production packaging and publication recovery remain unverified.
Retained concerns
No architecture-level concerns identified.Security review details
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Security Blast Radius
- inferred — The demonstrated new exposure is unauthenticated syndication of visible blog-post metadata and associated author and asset URLs. Neither handler accepts request-derived selectors, tenant identifiers, or credentials, so no request-driven expansion into private records is demonstrated.
Trust Boundaries and Controls
- observed — The input boundary is repository-authored blog data validated by the existing producer, not arbitrary HTTP request content. The new helper copies selected fields into feed output and performs no server-side fetch of post, image, or author URLs.
Hardening Proposals
- proposed — Add feed-body assertions that draft records never appear, including when the generated input contains drafts. This would protect the publication boundary; the existing response checks do not establish that invariant.
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Pre-merge checks: 
3 · 
1
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Failed checks: 1 warning Passed checks: 3 passed-
Full details: Out of Scope Changes check
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Explanation
The feed routes, feed generator, discovery links, MIME types, CORS configuration, dependency, build configuration, and e2e test support the blog feed feature in issue
#2489. No unrelated change is demonstrated.
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Full details: Linked Issues check
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Explanation
Issue
#2489requests RSS support for the blog. The PR adds/blog/rss.xml, feed generation, discovery metadata, absolute URLs, CORS, and an e2e check. However, the available evidence does not show that the reported RSS author-field validation errors were fixed. The e2e test checks headers and non-empty content, but it does not verify valid RSS structure or author fields.Resolution
Make
/blog/rss.xmlproduce validator-compliant RSS author fields. Add automated assertions for RSS structure and author fields.
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Finishing Touches
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Generate unit tests (beta)
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- Create a new PR
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- Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts
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📊 Dependency Size ChangesWarning This PR adds 447.8 kB of new dependencies, which exceeds the threshold of 200 kB.
Total size change: 447.8 kB |
Codecov Report❌ Patch coverage is
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Actionable comments posted: 4
🧹 Nitpick comments (3)
test/e2e/feeds.spec.ts (1)
20-49: Test is mostly solid; a couple of small robustness nits.
expect(href.slice(0, 16)).toBe('https://npmx.dev')is correct arithmetic ('https://npmx.dev'.length === 16) but brittle — any host-name change silently breaks both the prefix check and the derivedurl = href.slice(16). Prefer matching on the parsed URL so intent is obvious and the "derive path from href" step can't go wrong:- // href is an absolute link - expect(href.slice(0, 16)).toBe('https://npmx.dev') - - const { contentType, corsHeader } = await page.evaluate(async href => { - // Fetch the same path as in the alternate link - const url = href.slice(16) - const response = await fetch(url) + // href must be an absolute URL on the production origin + const parsed = new URL(href) + expect(parsed.origin).toBe('https://npmx.dev') + + const { contentType, corsHeader } = await page.evaluate(async path => { + const response = await fetch(path) return { contentType: response.headers.get('Content-Type'), corsHeader: response.headers.get('Access-Control-Allow-Origin'), } - }, href) + }, parsed.pathname)
await expect(locator).toHaveAttribute('href')without a second argument checks existence (fine), and the subsequentgetAttribute('href')+expect(href).not.toBeNull()+typeof href !== 'string'guard is a bit redundant. You can drop the first assertion and keep the null/string guard, sinceexpect(href).not.toBeNull()already fails the test on absence.Minor:
response.headers.get('Content-Type')returns the full header value, which may include charset parameters (application/rss+xml; charset=utf-8) depending on the server. Right nowtoBe(feed.contentType)would break if Nitro ever adds a charset. Considerexpect(contentType).toMatch(new RegExp('^' + feed.contentType))to be forward-compatible.🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In `@test/e2e/feeds.spec.ts` around lines 20 - 49, The test should parse the alternate link href with the URL API instead of slicing and remove the redundant locator existence assert; change the code to getAttribute('href') into href, guard for null/string, then create const parsed = new URL(href) and assert parsed.origin === 'https://npmx.dev' (or the intended host) and pass parsed.pathname+parsed.search into page.evaluate for fetching; finally relax the content-type check to match the media type prefix (e.g., use a startsWith or regex like '^' + feed.contentType) when asserting response.headers.get('Content-Type') so charset parameters won't break the test — update references: locator, href, page.evaluate, response.headers.get and the expect(contentType) assertion accordingly.nuxt.config.ts (1)
195-206: CORS + Content-Type via route rules — looks good.Matches the PR checklist (enable CORS, serve correct MIME types) and the values are exactly what
test/e2e/feeds.spec.tsasserts. One small thought: if you want feeds to be cacheable by intermediaries, consider adding aCache-Control: public, max-age=…header alongside — otherwise feed aggregators may hit the origin more often than needed.🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In `@nuxt.config.ts` around lines 195 - 206, The route rules for '/rss.xml', '/atom.xml', and '/feed.json' currently set CORS and Content-Type but lack caching; update the headers object in nuxt.config.ts for the route keys '/rss.xml', '/atom.xml', and '/feed.json' to include a Cache-Control header (e.g. 'Cache-Control': 'public, max-age=3600') so intermediaries can cache feeds; modify the headers for the RouteRule entries (the objects used for these paths) accordingly and run/update any tests that assert exact header sets if needed.app/pages/blog/index.vue (1)
19-40: Remove hard-coded feed URLs and title; use root-relative hrefs or derive from site config.The three hard-coded
https://npmx.dev/*hrefs and the fixed'Blog - npmx'title duplicate values already present innuxt.config.ts(site.url,site.name) and inserver/utils/feeds.ts. If the canonical origin ever changes (staging, preview branches, a rename), these links will silently point at the wrong host. Also note these are already absolute on a blog page onnpmx.dev— a root-relativehref(/rss.xml, etc.) is equally valid for<link rel="alternate">and would avoid hard-coding the origin on the client.Consider either:
Option A — root-relative hrefs
- href: 'https://npmx.dev/rss.xml', + href: '/rss.xml', ... - href: 'https://npmx.dev/atom.xml', + href: '/atom.xml', ... - href: 'https://npmx.dev/feed.json', + href: '/feed.json',Option B — derive from site config
const siteConfig = useSiteConfig() const origin = siteConfig.url // 'https://npmx.dev' useHead({ link: [ { rel: 'alternate', title: `${siteConfig.name} Blog`, type: 'application/rss+xml', href: `${origin}/rss.xml` }, { rel: 'alternate', title: `${siteConfig.name} Blog`, type: 'application/atom+xml', href: `${origin}/atom.xml` }, { rel: 'alternate', title: `${siteConfig.name} Blog`, type: 'application/feed+json', href: `${origin}/feed.json` }, ], })Note:
useSiteConfig()is already used elsewhere in the codebase (app/components/OgImage/Splash.takumi.vue), making Option B a viable pattern. Also consider updating the matching hard-coded URLs inserver/utils/feeds.tsfor consistency.🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In `@app/pages/blog/index.vue` around lines 19 - 40, Replace the hard-coded feed hrefs and title in the useHead call with either root-relative paths or values derived from the site's config: stop using 'https://npmx.dev/*' and the fixed 'Blog - npmx' string in the link array inside useHead; instead call useSiteConfig() (already used elsewhere), read siteConfig.url (if you need absolute origin) and siteConfig.name (for the title), and set hrefs to '/rss.xml', '/atom.xml', '/feed.json' or to `${siteConfig.url}/rss.xml` etc., and set title to `${siteConfig.name} Blog`; update the same pattern in server/utils/feeds.ts as well for consistency.
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.
Inline comments:
In `@nuxt.config.ts`:
- Around line 243-251: The esbuild exclude regex under the esbuild options
currently targets node_modules/.cache/nuxt/.nuxt/blog/posts.ts which won't match
Nuxt's actual buildDir (e.g. .nuxt/blog/posts.ts); update the exclude pattern in
the esbuild.options.exclude to allow the generated .nuxt/blog/posts.ts (or
otherwise include .nuxt/**/blog/posts.ts) so the `#blog/posts` import isn't
excluded, and add a simple runtime/build-time assertion or log of the resolved
buildDir used by Nuxt (referenced from server/utils/feeds.ts) to surface
mismatches early; also fix the comment path to use forward slashes
(server/utils/feeds.ts) for consistency.
In `@package.json`:
- Line 136: Move the "feed" package from devDependencies to dependencies in
package.json so it is available at runtime; update package.json by removing
"feed": "5.2.0" from devDependencies and adding the same entry under
dependencies. This ensures imports in server/utils/feeds.ts (used by the
/rss.xml, /atom.xml and /feed.json routes with prerender: true) are present in
production builds and prevents runtime errors if those routes are ever rendered
on-demand.
In `@server/utils/feeds.ts`:
- Around line 4-17: Add a short clarifying comment above the module-level
variable "feed" explaining that this cache is build-time only because getFeed()
calls generateFeed() once at module import (used for prerendered /rss.xml,
/atom.xml, /feed.json), and that if prerendering/ISR is removed the cache will
become stale and must be invalidated or regenerated (e.g., reset feed or call
generateFeed on each request); reference the "feed" variable, the getFeed()
function and generateFeed() to make the intended lifetime and required
invalidation explicit for future maintainers.
- Around line 19-54: generateFeed currently passes post.image through unchanged
causing broken thumbnails; update the feed.addItem call in function generateFeed
to normalize post.image the same way author.avatar is normalized (e.g., if
post.image exists, set image to new URL(post.image, siteUrl).toString()), and
replace the hard-coded title/description/id/link values with values pulled from
the shared site config (useSiteConfig() or equivalent) so title/description/site
URL are derived from the single source of truth used by nuxt.config.ts and
app/pages/blog/index.vue.
---
Nitpick comments:
In `@app/pages/blog/index.vue`:
- Around line 19-40: Replace the hard-coded feed hrefs and title in the useHead
call with either root-relative paths or values derived from the site's config:
stop using 'https://npmx.dev/*' and the fixed 'Blog - npmx' string in the link
array inside useHead; instead call useSiteConfig() (already used elsewhere),
read siteConfig.url (if you need absolute origin) and siteConfig.name (for the
title), and set hrefs to '/rss.xml', '/atom.xml', '/feed.json' or to
`${siteConfig.url}/rss.xml` etc., and set title to `${siteConfig.name} Blog`;
update the same pattern in server/utils/feeds.ts as well for consistency.
In `@nuxt.config.ts`:
- Around line 195-206: The route rules for '/rss.xml', '/atom.xml', and
'/feed.json' currently set CORS and Content-Type but lack caching; update the
headers object in nuxt.config.ts for the route keys '/rss.xml', '/atom.xml', and
'/feed.json' to include a Cache-Control header (e.g. 'Cache-Control': 'public,
max-age=3600') so intermediaries can cache feeds; modify the headers for the
RouteRule entries (the objects used for these paths) accordingly and run/update
any tests that assert exact header sets if needed.
In `@test/e2e/feeds.spec.ts`:
- Around line 20-49: The test should parse the alternate link href with the URL
API instead of slicing and remove the redundant locator existence assert; change
the code to getAttribute('href') into href, guard for null/string, then create
const parsed = new URL(href) and assert parsed.origin === 'https://npmx.dev' (or
the intended host) and pass parsed.pathname+parsed.search into page.evaluate for
fetching; finally relax the content-type check to match the media type prefix
(e.g., use a startsWith or regex like '^' + feed.contentType) when asserting
response.headers.get('Content-Type') so charset parameters won't break the test
— update references: locator, href, page.evaluate, response.headers.get and the
expect(contentType) assertion accordingly.
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⛔ Files ignored due to path filters (1)
pnpm-lock.yamlis excluded by!**/pnpm-lock.yaml
📒 Files selected for processing (8)
app/pages/blog/index.vuenuxt.config.tspackage.jsonserver/routes/atom.xml.get.tsserver/routes/feed.json.get.tsserver/routes/rss.xml.get.tsserver/utils/feeds.tstest/e2e/feeds.spec.ts
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Actionable comments posted: 2
- 🪄 Fix CodeRabbit comments on this PR
🤖 Prompt to fix review comments
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only still-valid issues, skip the rest with a brief reason, keep changes
minimal, and validate.
Inline comments:
In `@server/utils/feeds.ts`:
- Around line 28-33: Update getFeed() so RSS item objects omit the incompatible
author field, while preserving the current author array for Atom output. Use the
feed library’s format-specific item construction or an appropriate valid
extension such as dc:creator, ensuring non-draft RSS items never emit name-only
author values.
In `@test/e2e/feeds.spec.ts`:
- Around line 43-46: Update the feed response assertions near the contentType
and corsHeader checks to read the response text, parse it with DOMParser using
application/xml, verify the root element is rss for RSS feeds or feed for Atom
feeds, and require at least one item or entry element.
After applying the fix, consider running `coderabbit review --agent` for local
review. Visit https://docs.coderabbit.ai/cli?utm_source=ghpr
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⛔ Files ignored due to path filters (1)
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📒 Files selected for processing (7)
app/pages/blog/index.vuenuxt.config.tspackage.jsonserver/routes/blog/atom.xml.get.tsserver/routes/blog/rss.xml.get.tsserver/utils/feeds.tstest/e2e/feeds.spec.ts
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@trueberryless This is ready as far as I'm concerned. I couldn't figure out if I can request a review from you or other maintainers in the GitHub UI, I hope this way is okay. |
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Thanks for the update, @Kiwow!
Don't worry, I got the GitHub notification, just took some time to get back to this.
I took the liberty of setting prerendered to true and setting stable timestamps for the feed, so now this looks perfect to me as well 🚀
I'm opening this as a draft so that progress on it is transparent. Feedback is appreciated even before it's ready!
🔗 Linked issue
Resolves #2489
The plan
feedpackagemodules/blog.tsis creating in.nuxt/blog/posts.ts, possibly in the same module setup<link rel="alternate">elements for readers to find the feedsChecklist
Before merging, I need to make sure that:
Issues / obstacles:
The feed package currently doesn't support JSON Feed 1.1, which added support for multiple authors. This means it silently throws away all but the first author we specify in an the
authorarray. Manually parsing the object after it gets generated and adding in the other authors is an option, but then we'd be lying about the version that we're serving. Alternatively, it shouldn't be that hard to write the JSON Feed serializer ourselves (thefeedimplementation is a bit over 100 lines of code)RSS (the spec) seemingly doesn't support multiple authors at all, or just in convention, where you put everyone into an
<author>tag. I'll have to try and test some readers / find how feeds handle multiple authors to figure out a good solution. Either way, thefeedpackage includes multiple<author>tags, which seems to be valid in Atom but not in RSS.Also see my update comment on this