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feat(infra): extract rel=alternate feed links from email HTML

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Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Julien Herr
2026-05-25 17:08:48 +02:00
parent df5546fedd
commit 3c48181c05
2 changed files with 75 additions and 0 deletions
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src/infrastructure/html-processor.test.ts
+47
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@@ -4,6 +4,7 @@ import {
extractInlineCids,
htmlToText,
extractLinks,
extractFeedLinks,
} from "./html-processor";
import type { AttachmentData } from "../types";
@@ -348,3 +349,49 @@ describe("extractLinks", () => {
expect(extractLinks("")).toEqual([]);
});
});
describe("extractFeedLinks", () => {
it("extracts rel=alternate links that carry a type", () => {
const html = `<html><head>
<link rel="alternate" type="application/rss+xml" href="https://blog.example.com/feed.xml">
<link rel="alternate" type="application/atom+xml" href="https://blog.example.com/atom.xml">
</head><body>hi</body></html>`;
expect(extractFeedLinks(html)).toEqual([
{
href: "https://blog.example.com/feed.xml",
type: "application/rss+xml",
},
{
href: "https://blog.example.com/atom.xml",
type: "application/atom+xml",
},
]);
});
it("ignores non-alternate rels and links without a type", () => {
const html = `<head>
<link rel="stylesheet" type="text/css" href="https://x.com/a.css">
<link rel="alternate" href="https://x.com/notype">
</head>`;
expect(extractFeedLinks(html)).toEqual([]);
});
it("absolutizes a relative href against the base", () => {
const html = `<head><link rel="alternate" type="application/rss+xml" href="/feed.xml"></head>`;
expect(extractFeedLinks(html, "https://blog.example.com")).toEqual([
{
href: "https://blog.example.com/feed.xml",
type: "application/rss+xml",
},
]);
});
it("drops a relative href when no base is given", () => {
const html = `<head><link rel="alternate" type="application/rss+xml" href="/feed.xml"></head>`;
expect(extractFeedLinks(html)).toEqual([]);
});
it("returns [] for plain-text bodies", () => {
expect(extractFeedLinks("just text https://x.com/feed")).toEqual([]);
});
});