fix: markdown html links

[essenmitsosse]

As @alexdln noted: HTML links in markdown to npmjs.com where not converted to local links. In fact all most all processing for links only worked on markdown links. This moves the link transformation and analysis (for TOC + playground) to sanitize-html which parses the HTML after the Markdown has been converted to HTML, to have a single implementation for all links.

Addtional things:

• Add TypeScript playground as playground
• Fixes linked images having an external link icon

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Project	Deployment	Actions	Updated (UTC)
npmx.dev	Ready	Preview, Comment	Feb 11, 2026 5:23pm

2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
docs.npmx.dev	Ignored	Preview	Feb 11, 2026 5:23pm
npmx-lunaria	Ignored		Feb 11, 2026 5:23pm

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

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[coderabbitai]

📝 Walkthrough

Walkthrough

The Readme.vue selector for external links now excludes anchors that contain an img descendant (:not(:has(img))), so icon-after styling applies only to non-image links. server/utils/readme.ts adds an optional path?: string to PlaygroundProvider, registers a TypeScript Playground provider with path: '/play', tightens provider matching to require path prefixes when present, introduces replaceHtmlLink to rewrite npmjs.com hrefs, attaches intermediate title metadata during token rendering, resolves/normalises hrefs during sanitise/transform, and collects playground link metadata for recognised providers.

Possibly related PRs

• feat: replace links in markdown instead of via javascript #1339: Modifies README link handling and Readme.vue link behaviour, touching the same link rewriting and UI handling code.
• fix: convert anchor links in readme content to lowercase #1296: Adjusts anchor href handling in server/utils/readme.ts (in-page hash handling), closely related to the href resolution changes here.
• feat: polish colors and indents #1042: Alters Readme.vue anchor/CSS selectors, overlapping with the external-link selector change in this PR.

Suggested reviewers

• alexdln
• danielroe

🚥 Pre-merge checks | ✅ 1

✅ Passed checks (1 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description clearly relates to the changeset, detailing link processing changes, npmjs.com conversion, TypeScript playground addition, and fixing linked images with external link icons.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

---

No actionable comments were generated in the recent review. 🎉

🧹 Recent nitpick comments

server/utils/readme.ts (1)

414-422: Clean up redundant template literal and handle potential undefined value.

Two issues:

1. Line 414: Double comment // // appears to be a leftover from incomplete cleanup.
2. Line 420: The outer template literal interpolation is redundant, and plainText || title could evaluate to undefined if both are falsy, resulting in data-title-intermediate="undefined".

♻️ Suggested fix

-  // // Resolve link URLs, add security attributes, and collect playground links
+  // Add intermediate title data for playground link collection during sanitisation
   renderer.link = function ({ href, title, tokens }: Tokens.Link) {
     const text = this.parser.parseInline(tokens)
     const titleAttr = title ? ` title="${title}"` : ''
     const plainText = text.replace(/<[^>]*>/g, '').trim()
 
-    const intermediateTitleAttr = `${` data-title-intermediate="${plainText || title}"`}`
+    const intermediateTitleAttr = ` data-title-intermediate="${plainText || title || ''}"`
 
     return `<a href="${href}"${titleAttr}${intermediateTitleAttr}>${text}</a>`
   }

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[coderabbitai]

Actionable comments posted: 2

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (1)

server/utils/readme.ts (1)

504-534: ⚠️ Potential issue | 🔴 Critical

Missing href assignment after resolution.

resolvedHref is computed and used for playground matching and external link detection, but it's never assigned back to attribs.href. The output will retain the original unresolved href, which means:

• Anchor links won't get the user-content- prefix
• Relative URLs won't be resolved to CDN/raw URLs
• npmjs.com redirects won't be applied

🐛 Suggested fix

       const resolvedHref = resolveUrl(attribs.href, packageName, repoInfo)
+      attribs.href = resolvedHref

       const provider = matchPlaygroundProvider(resolvedHref)

🧹 Nitpick comments (1)

server/utils/readme.ts (1)

78-84: Minor: Capitalisation inconsistency in provider name.

"Typescript" should be "TypeScript" (capital S) to match the official branding.

✏️ Suggested fix

   {
     id: 'typescript-playground',
-    name: 'Typescript Playground',
+    name: 'TypeScript Playground',
     domains: ['typescriptlang.org'],
     path: '/play',
     icon: 'typescript',
   },

[coderabbitai]

Actionable comments posted: 1