From e635f4f3e8d81e14c6ac1fc7208503522bae0808 Mon Sep 17 00:00:00 2001
From: Paul Robert Lloyd <paulrobertlloyd@users.noreply.github.com>
Date: Sun, 12 Nov 2023 16:59:28 +0000
Subject: [PATCH 1/5] docs: fix typo in parse.ts comment

---
 src/microformats/parse.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/microformats/parse.ts b/src/microformats/parse.ts
index d8c6fe0a..117c36e0 100644
--- a/src/microformats/parse.ts
+++ b/src/microformats/parse.ts
@@ -86,7 +86,7 @@ export const parseMicroformat = (
   }
 
   /**
-   * There is some ambigutity on how this should be handled.
+   * There is some ambiguity on how this should be handled.
    * At the moment, we're following other parsers and keeping `value` a string
    * and adding `html` as an undocumented property.
    */

From bc9d8d331f53e2d8cc2bc4c5996414b855c0c152 Mon Sep 17 00:00:00 2001
From: Paul Robert Lloyd <paulrobertlloyd@users.noreply.github.com>
Date: Sun, 12 Nov 2023 17:02:29 +0000
Subject: [PATCH 2/5] feat(experimental): add support for authorship (option
 flag)

---
 src/index.ts           | 1 +
 src/types.ts           | 1 +
 src/validator.ts       | 6 +++++-
 test/scenarios.spec.ts | 7 ++++++-
 4 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index 58e9632b..691525d0 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -8,6 +8,7 @@ export interface Options {
     lang?: boolean;
     textContent?: boolean;
     metaformats?: boolean;
+    authorship?: boolean;
   };
 }
 
diff --git a/src/types.ts b/src/types.ts
index 785b6372..9a3c4a36 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -14,6 +14,7 @@ export interface ParserOptions {
     lang?: boolean;
     textContent?: boolean;
     metaformats?: boolean;
+    authorship?: boolean;
   };
 }
 
diff --git a/src/validator.ts b/src/validator.ts
index 4d962418..bc751e44 100644
--- a/src/validator.ts
+++ b/src/validator.ts
@@ -81,7 +81,7 @@ export const validator = (
   if ("experimental" in options) {
     const experimental = assertIsObject(
       options.experimental,
-      ["lang", "textContent", "metaformats"],
+      ["lang", "textContent", "metaformats", "authorship"],
       "experimental",
     );
 
@@ -96,6 +96,10 @@ export const validator = (
     if ("metaformats" in experimental) {
       assertIsBoolean(experimental.metaformats, "experimental.metaformats");
     }
+
+    if ("authorship" in experimental) {
+      assertIsBoolean(experimental.authorship, "experimental.authorship");
+    }
   }
 };
 
diff --git a/test/scenarios.spec.ts b/test/scenarios.spec.ts
index 672e3c6b..8bbca945 100644
--- a/test/scenarios.spec.ts
+++ b/test/scenarios.spec.ts
@@ -67,7 +67,12 @@ describe("mf2() // experimental scenarios", () => {
     it(`should correctly parse ${name}`, () => {
       const result = mf2(input, {
         ...options,
-        experimental: { lang: true, textContent: true, metaformats: true },
+        experimental: {
+          lang: true,
+          textContent: true,
+          metaformats: true,
+          authorship: true,
+        },
       });
       expect(result).to.deep.equal(expected);
     });

From d87355ca70aafe93e2fd447436d7cf237d849742 Mon Sep 17 00:00:00 2001
From: Paul Robert Lloyd <paulrobertlloyd@users.noreply.github.com>
Date: Sun, 12 Nov 2023 17:02:46 +0000
Subject: [PATCH 3/5] feat(experimental): add support for authorship (demo
 option)

---
 demo/demo.js        |  3 ++-
 demo/index.tpl.html | 10 ++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/demo/demo.js b/demo/demo.js
index 9ecd6e7e..04399b37 100644
--- a/demo/demo.js
+++ b/demo/demo.js
@@ -34,9 +34,10 @@ window.parseHtml = () => {
   const lang = document.getElementById("lang").checked;
   const textContent = document.getElementById("textContent").checked;
   const metaformats = document.getElementById("metaformats").checked;
+  const authorship = document.getElementById("authorship").checked;
 
   return parse(html, {
     baseUrl,
-    experimental: { lang, textContent, metaformats },
+    experimental: { lang, textContent, metaformats, authorship },
   });
 };
diff --git a/demo/index.tpl.html b/demo/index.tpl.html
index 1bfd10c8..ad8d32aa 100644
--- a/demo/index.tpl.html
+++ b/demo/index.tpl.html
@@ -83,6 +83,16 @@ <h3>Experimental options</h3>
             />
             <span>Metaformats parsing</span>
           </label>
+          <label>
+            <input
+              type="checkbox"
+              name="authorship"
+              id="authorship"
+              value="true"
+              checked
+            />
+            <span>Authorship discovery</span>
+          </label>
         </p>
 
         <div class="submit">

From c01370de6acf79cfbc4f1d9c49336c5424470676 Mon Sep 17 00:00:00 2001
From: Paul Robert Lloyd <paulrobertlloyd@users.noreply.github.com>
Date: Sun, 12 Nov 2023 17:12:25 +0000
Subject: [PATCH 4/5] feat(experimental): add support for authorship (test
 suite)

---
 ...ship-h-card-with-rel-author-to-rel-me.html | 16 ++++
 ...ship-h-card-with-rel-author-to-rel-me.json | 38 ++++++++++
 ...rship-h-card-with-rel-author-to-u-url.html | 16 ++++
 ...rship-h-card-with-rel-author-to-u-url.json | 38 ++++++++++
 .../authorship-h-card-with-rel-author.html    | 21 +++++
 .../authorship-h-card-with-rel-author.json    | 37 +++++++++
 .../experimental/authorship-h-card.html       | 19 +++++
 .../experimental/authorship-h-card.json       | 31 ++++++++
 .../experimental/authorship-h-feed.html       | 30 ++++++++
 .../experimental/authorship-h-feed.json       | 76 +++++++++++++++++++
 .../experimental/authorship-p-author.html     | 16 ++++
 .../experimental/authorship-p-author.json     | 20 +++++
 12 files changed, 358 insertions(+)
 create mode 100644 test/suites/experimental/authorship-h-card-with-rel-author-to-rel-me.html
 create mode 100644 test/suites/experimental/authorship-h-card-with-rel-author-to-rel-me.json
 create mode 100644 test/suites/experimental/authorship-h-card-with-rel-author-to-u-url.html
 create mode 100644 test/suites/experimental/authorship-h-card-with-rel-author-to-u-url.json
 create mode 100644 test/suites/experimental/authorship-h-card-with-rel-author.html
 create mode 100644 test/suites/experimental/authorship-h-card-with-rel-author.json
 create mode 100644 test/suites/experimental/authorship-h-card.html
 create mode 100644 test/suites/experimental/authorship-h-card.json
 create mode 100644 test/suites/experimental/authorship-h-feed.html
 create mode 100644 test/suites/experimental/authorship-h-feed.json
 create mode 100644 test/suites/experimental/authorship-p-author.html
 create mode 100644 test/suites/experimental/authorship-p-author.json

diff --git a/test/suites/experimental/authorship-h-card-with-rel-author-to-rel-me.html b/test/suites/experimental/authorship-h-card-with-rel-author-to-rel-me.html
new file mode 100644
index 00000000..f7a39387
--- /dev/null
+++ b/test/suites/experimental/authorship-h-card-with-rel-author-to-rel-me.html
@@ -0,0 +1,16 @@
+<!-- This next entry is by Virginia Woolf. Her URL is https://virginia.example, and her photo is at https://virginia.example/photo.jpg. -->
+
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>Entry with rel=author (links to h-card with rel=me)</title>
+  </head>
+  <body class="h-entry">
+    <div class="e-content">
+      <p>A woman must have money and a room of her own if she is to write fiction.</p>
+    </div>
+    <footer>
+      <a href="https://virginia.woolf" rel="author">About Virginia Woolf</a>
+    </footer>
+  </body>
+</html>
diff --git a/test/suites/experimental/authorship-h-card-with-rel-author-to-rel-me.json b/test/suites/experimental/authorship-h-card-with-rel-author-to-rel-me.json
new file mode 100644
index 00000000..7dc6d92d
--- /dev/null
+++ b/test/suites/experimental/authorship-h-card-with-rel-author-to-rel-me.json
@@ -0,0 +1,38 @@
+{
+  "items": [
+    {
+      "type": ["h-entry"],
+      "lang": "en",
+      "properties": {
+        "author": [
+          {
+            "type": ["h-card"],
+            "lang": "en",
+            "properties": {
+              "name": ["Virginia Woolf"],
+              "photo": ["https://virginia.example/photo.jpg"],
+              "url": ["https://virginia.example"]
+            },
+            "value": "Virginia Woolf"
+          }
+        ],
+        "content": [
+          {
+            "value": "A woman must have money and a room of her own if she is to write fiction.",
+            "lang": "en",
+            "html": "<p>A woman must have money and a room of her own if she is to write fiction.</p>"
+          }
+        ]
+      }
+    }
+  ],
+  "rel-urls": {
+    "https://virginia.woolf": {
+      "rels": ["author"],
+      "text": "About Virginia Woolf"
+    }
+  },
+  "rels": {
+    "author": ["https://virginia.woolf"]
+  }
+}
diff --git a/test/suites/experimental/authorship-h-card-with-rel-author-to-u-url.html b/test/suites/experimental/authorship-h-card-with-rel-author-to-u-url.html
new file mode 100644
index 00000000..8ddc1ee1
--- /dev/null
+++ b/test/suites/experimental/authorship-h-card-with-rel-author-to-u-url.html
@@ -0,0 +1,16 @@
+<!-- This is a haiku by Basho. His URL is https://basho.example, and his photo is at https://basho.example/photo.jpg. -->
+
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>Entry with rel=author (links to h-card with u-url and u-uid)</title>
+  </head>
+  <body class="h-entry">
+    <div class="e-content" lang="jp">
+      <p>古池や<br />蛙飛び込む<br />水の音</p>
+    </div>
+    <footer>
+      <a href="https://basho.example" rel="author">About Basho</a>
+    </footer>
+  </body>
+</html>
diff --git a/test/suites/experimental/authorship-h-card-with-rel-author-to-u-url.json b/test/suites/experimental/authorship-h-card-with-rel-author-to-u-url.json
new file mode 100644
index 00000000..c12dde7e
--- /dev/null
+++ b/test/suites/experimental/authorship-h-card-with-rel-author-to-u-url.json
@@ -0,0 +1,38 @@
+{
+  "items": [
+    {
+      "type": ["h-entry"],
+      "lang": "en",
+      "properties": {
+        "author": [
+          {
+            "type": ["h-card"],
+            "lang": "en",
+            "properties": {
+              "name": ["Basho"],
+              "photo": ["https://basho.example/photo.jpg"],
+              "url": ["https://basho.example"]
+            },
+            "value": "Basho"
+          }
+        ],
+        "content": [
+          {
+            "value": "古池や\n蛙飛び込む\n水の音",
+            "lang": "jp",
+            "html": "<p>古池や<br>蛙飛び込む<br>水の音</p>"
+          }
+        ]
+      }
+    }
+  ],
+  "rel-urls": {
+    "https://basho.example": {
+      "rels": ["author"],
+      "text": "About Basho"
+    }
+  },
+  "rels": {
+    "author": ["https://basho.example"]
+  }
+}
diff --git a/test/suites/experimental/authorship-h-card-with-rel-author.html b/test/suites/experimental/authorship-h-card-with-rel-author.html
new file mode 100644
index 00000000..72190360
--- /dev/null
+++ b/test/suites/experimental/authorship-h-card-with-rel-author.html
@@ -0,0 +1,21 @@
+<!-- This is an entry by Patañjali. His URL is https://patanjali.example, and he uses no photo. -->
+
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>Entry with separate h-card and rel=author</title>
+  </head>
+  <body class="h-entry">
+    <div class="e-content">
+      <p>For one who sees the distinction, there is no further confusing of the mind with the self.</p>
+    </div>
+    <p class="p-author h-card">
+      <a href="https://patanjali.example" class="u-url">
+        <span class="p-name">Patañjali</span>
+      </a>
+    </p>
+    <footer>
+      <a href="https://patanjali.example" rel="author">About Patañjali</a>
+    </footer>
+  </body>
+</html>
diff --git a/test/suites/experimental/authorship-h-card-with-rel-author.json b/test/suites/experimental/authorship-h-card-with-rel-author.json
new file mode 100644
index 00000000..d416ddf7
--- /dev/null
+++ b/test/suites/experimental/authorship-h-card-with-rel-author.json
@@ -0,0 +1,37 @@
+{
+  "items": [
+    {
+      "type": ["h-entry"],
+      "lang": "en",
+      "properties": {
+        "author": [
+          {
+            "type": ["h-card"],
+            "lang": "en",
+            "properties": {
+              "name": ["Patañjali"],
+              "url": ["https://patanjali.example"]
+            },
+            "value": "Patañjali"
+          }
+        ],
+        "content": [
+          {
+            "value": "For one who sees the distinction, there is no further confusing of the mind with the self.",
+            "lang": "en",
+            "html": "<p>For one who sees the distinction, there is no further confusing of the mind with the self.</p>"
+          }
+        ]
+      }
+    }
+  ],
+  "rel-urls": {
+    "https://patanjali.example": {
+      "rels": ["author"],
+      "text": "About Patañjali"
+    }
+  },
+  "rels": {
+    "author": ["https://patanjali.example"]
+  }
+}
diff --git a/test/suites/experimental/authorship-h-card.html b/test/suites/experimental/authorship-h-card.html
new file mode 100644
index 00000000..1675d431
--- /dev/null
+++ b/test/suites/experimental/authorship-h-card.html
@@ -0,0 +1,19 @@
+<!-- The name of the author of this entry is Homer. His URL is https://homer.example, he uses https://homer.example/photo.jpg as his photo. -->
+
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>Entry with h-card</title>
+  </head>
+  <body class="h-entry">
+    <div class="e-content">
+      <p>Even in the house of Hades there is left something, a soul and an image, but there is no real heart of life in it.</p>
+    </div>
+    <footer class="p-author h-card">
+      <a href="https://homer.example" class="u-url">
+        <img src="https://homer.example/photo.jpg" class="u-photo" width="64" />
+        <div class="p-name">Homer</div>
+      </a>
+    </footer>
+  </body>
+</html>
diff --git a/test/suites/experimental/authorship-h-card.json b/test/suites/experimental/authorship-h-card.json
new file mode 100644
index 00000000..673d02e3
--- /dev/null
+++ b/test/suites/experimental/authorship-h-card.json
@@ -0,0 +1,31 @@
+{
+  "items": [
+    {
+      "type": ["h-entry"],
+      "lang": "en",
+      "properties": {
+        "author": [
+          {
+            "type": ["h-card"],
+            "lang": "en",
+            "properties": {
+              "name": ["Homer"],
+              "photo": ["https://homer.example/photo.jpg"],
+              "url": ["https://homer.example"]
+            },
+            "value": "Homer"
+          }
+        ],
+        "content": [
+          {
+            "value": "Even in the house of Hades there is left something, a soul and an image, but there is no real heart of life in it.",
+            "lang": "en",
+            "html": "<p>Even in the house of Hades there is left something, a soul and an image, but there is no real heart of life in it.</p>"
+          }
+        ]
+      }
+    }
+  ],
+  "rel-urls": {},
+  "rels": {}
+}
diff --git a/test/suites/experimental/authorship-h-feed.html b/test/suites/experimental/authorship-h-feed.html
new file mode 100644
index 00000000..97ecd685
--- /dev/null
+++ b/test/suites/experimental/authorship-h-feed.html
@@ -0,0 +1,30 @@
+<!-- The name of the author of this entry is Aristotle. His URL is https://aristotle.example, he uses https://aristotle.example/photo.jpg as his photo. -->
+
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>Feed with h-card</title>
+  </head>
+  <body class="h-feed">
+    <article class="h-entry">
+      <div class="e-content">
+        <p>Quality is not an act, it is a habit.</p>
+      </div>
+    </article>
+    <article class="h-entry">
+      <div class="e-content">
+        <p>Whosoever is delighted in solitude is either a wild beast or a god.</p>
+      </div>
+    </article>
+    <footer class="p-author h-card">
+      <a href="https://aristotle.example" class="u-url">
+        <img
+          src="https://aristotle.example/photo.jpg"
+          class="u-photo"
+          width="64"
+        />
+        <div class="p-name">Aristotle</div>
+      </a>
+    </footer>
+  </body>
+</html>
diff --git a/test/suites/experimental/authorship-h-feed.json b/test/suites/experimental/authorship-h-feed.json
new file mode 100644
index 00000000..607f8ab3
--- /dev/null
+++ b/test/suites/experimental/authorship-h-feed.json
@@ -0,0 +1,76 @@
+{
+  "items": [
+    {
+      "type": ["h-feed"],
+      "lang": "en",
+      "properties": {
+        "author": [
+          {
+            "type": ["h-card"],
+            "lang": "en",
+            "properties": {
+              "name": ["Aristotle"],
+              "photo": ["https://aristotle.example/photo.jpg"],
+              "url": ["https://aristotle.example"]
+            },
+            "value": "Aristotle"
+          }
+        ]
+      },
+      "children": [
+        {
+          "type": ["h-entry"],
+          "lang": "en",
+          "properties": {
+            "author": [
+              {
+                "type": ["h-card"],
+                "lang": "en",
+                "properties": {
+                  "name": ["Aristotle"],
+                  "photo": ["https://aristotle.example/photo.jpg"],
+                  "url": ["https://aristotle.example"]
+                },
+                "value": "Aristotle"
+              }
+            ],
+            "content": [
+              {
+                "html": "<p>Quality is not an act, it is a habit.</p>",
+                "lang": "en",
+                "value": "Quality is not an act, it is a habit."
+              }
+            ]
+          }
+        },
+        {
+          "type": ["h-entry"],
+          "lang": "en",
+          "properties": {
+            "author": [
+              {
+                "type": ["h-card"],
+                "lang": "en",
+                "properties": {
+                  "name": ["Aristotle"],
+                  "photo": ["https://aristotle.example/photo.jpg"],
+                  "url": ["https://aristotle.example"]
+                },
+                "value": "Aristotle"
+              }
+            ],
+            "content": [
+              {
+                "html": "<p>Whosoever is delighted in solitude is either a wild beast or a god.</p>",
+                "lang": "en",
+                "value": "Whosoever is delighted in solitude is either a wild beast or a god."
+              }
+            ]
+          }
+        }
+      ]
+    }
+  ],
+  "rel-urls": {},
+  "rels": {}
+}
diff --git a/test/suites/experimental/authorship-p-author.html b/test/suites/experimental/authorship-p-author.html
new file mode 100644
index 00000000..497682bc
--- /dev/null
+++ b/test/suites/experimental/authorship-p-author.html
@@ -0,0 +1,16 @@
+<!-- The name of the author of this entry is William Shakespeare. There is no extra information available about him on this page, just his name is the correct answer. -->
+
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>Entry with p-author</title>
+  </head>
+  <body class="h-entry">
+    <div class="e-content">
+      <p>To be, or not to be: that is the question.</p>
+    </div>
+    <footer>
+      <p class="p-author">William Shakespeare</p>
+    </footer>
+  </body>
+</html>
diff --git a/test/suites/experimental/authorship-p-author.json b/test/suites/experimental/authorship-p-author.json
new file mode 100644
index 00000000..35bb5433
--- /dev/null
+++ b/test/suites/experimental/authorship-p-author.json
@@ -0,0 +1,20 @@
+{
+  "items": [
+    {
+      "type": ["h-entry"],
+      "lang": "en",
+      "properties": {
+        "author": ["William Shakespeare"],
+        "content": [
+          {
+            "value": "To be, or not to be: that is the question.",
+            "lang": "en",
+            "html": "<p>To be, or not to be: that is the question.</p>"
+          }
+        ]
+      }
+    }
+  ],
+  "rel-urls": {},
+  "rels": {}
+}

From d190378cb71b7578e7502bbbe6a1fb4eead270fd Mon Sep 17 00:00:00 2001
From: Paul Robert Lloyd <paulrobertlloyd@users.noreply.github.com>
Date: Sun, 12 Nov 2023 21:28:14 +0000
Subject: [PATCH 5/5] feat(experimental): add support for authorship (wip)

---
 src/helpers/authorship.ts | 108 ++++++++++++++++++++++++++++++++++++++
 src/microformats/parse.ts |  10 ++++
 src/parser.ts             |   1 +
 src/types.ts              |  15 +++++-
 4 files changed, 133 insertions(+), 1 deletion(-)
 create mode 100644 src/helpers/authorship.ts

diff --git a/src/helpers/authorship.ts b/src/helpers/authorship.ts
new file mode 100644
index 00000000..47c40f7e
--- /dev/null
+++ b/src/helpers/authorship.ts
@@ -0,0 +1,108 @@
+import {
+  Author,
+  Image,
+  MicroformatProperty,
+  MicroformatRoot,
+  Rels,
+} from "../types";
+
+function getPlainText(values: MicroformatProperty[]): string | null {
+  if (values.length === 0) {
+    return null;
+  }
+
+  const value = values[0] as Author;
+  let plainText: string | null;
+  if (value.value !== undefined && typeof value.value === "string") {
+    plainText = value.value;
+  } else if (typeof value === "string") {
+    plainText = value;
+  } else {
+    plainText = null;
+  }
+
+  return plainText && plainText.trim();
+}
+
+const parseAuthor = (hCard: MicroformatRoot) => {
+  // TODO: Figure out how to stop TypeScript complaining about missing `value`
+  const result: Author = {};
+
+  if (hCard.properties !== undefined) {
+    // Use first (or only) name
+    const names = hCard.properties.name as string[];
+    if (names?.length > 0) {
+      result.name = names[0];
+    }
+
+    // Use first (or only) photo
+    const photos = hCard.properties.photo as Image[];
+    if (photos?.length > 0) {
+      const photo = getPlainText(photos);
+      if (photo) {
+        result.photo = photo;
+      }
+    }
+
+    // Use first (or only) URL
+    const urls = hCard.properties.url as string[];
+    if (urls?.length > 0) {
+      result.url = urls[0];
+    }
+  } else if (hCard) {
+    if (URL.canParse(String(hCard))) {
+      result.url = String(hCard);
+    } else {
+      result.name = String(hCard);
+    }
+  }
+
+  return result as Author;
+};
+
+const findEntryAuthor = (hEntry: MicroformatRoot) => {
+  const values = hEntry.properties.author || [];
+
+  if (Object.keys(values).length === 0) {
+    return;
+  }
+
+  return parseAuthor(values[0] as MicroformatRoot);
+};
+
+const findFeedAuthor = () => false;
+
+export const findAuthor = async (item: MicroformatRoot, rels: Rels) => {
+  // 1. If no `h-entry` then there’s no post to find authorship for.
+  const itemIsEntry = item.type && item.type[0] === "h-entry";
+  if (!itemIsEntry) {
+    return false;
+  }
+
+  // 2. Parse the `h-entry`
+  const entryAuthor = findEntryAuthor(item);
+  const feedAuthor = findFeedAuthor(); // TODO
+
+  // 3 & 4. Return author in `h-entry`, else find author in parent `h-feed`
+  const author = entryAuthor ? entryAuthor : feedAuthor;
+
+  // 5. Return `author` if `h-card`
+  const authorIsCard = author && author.type[0] === "h-card";
+  if (authorIsCard) {
+    return author;
+  }
+
+  // 6. Use `h-card` fetched from rel=author
+  const authorPage = author.properties?.url || rels.author;
+  if (authorPage) {
+    // Fetch `authorPage` and parse result using `parseMicroformat`
+    // This is an async function, which would bubble up to the parent function
+  }
+
+  // 7. From the parsed `authorPage`, return the first `h-card` that either:
+  //    * Has a value for `u-url` (or `u-uid`) that matches the `authorPage` URL
+  //    * Has a value for `u-url` that matches a `rel=me` on the `authorPage`
+
+  // 8. Else, no deterministic author can be found
+  return author;
+};
diff --git a/src/microformats/parse.ts b/src/microformats/parse.ts
index 117c36e0..2fef6dd8 100644
--- a/src/microformats/parse.ts
+++ b/src/microformats/parse.ts
@@ -5,6 +5,7 @@ import {
   Element,
 } from "../types";
 import { microformatProperties } from "./properties";
+import { findAuthor } from "../helpers/authorship";
 import { textContent } from "../helpers/textContent";
 import { getAttributeValue, getClassNames } from "../helpers/attributes";
 import { findChildren } from "../helpers/findChildren";
@@ -66,6 +67,15 @@ export const parseMicroformat = (
     item.lang = lang;
   }
 
+  if (isEnabled(options, "authorship")) {
+    const author = findAuthor(item, options.rels);
+
+    if (author) {
+      console.log("author", author);
+      // item.properties.author = author;
+    }
+  }
+
   if (children.length) {
     item.children = children.map((child) =>
       parseMicroformat(child, { ...options, inherited }),
diff --git a/src/parser.ts b/src/parser.ts
index 339be208..ae7fc213 100644
--- a/src/parser.ts
+++ b/src/parser.ts
@@ -23,6 +23,7 @@ export const parser = (
     baseUrl,
     idRefs,
     inherited: { roots: [], lang },
+    rels,
   };
   let items = findChildren(doc, isMicroformatRoot).map((mf) =>
     parseMicroformat(mf, parsingOptions),
diff --git a/src/types.ts b/src/types.ts
index 9a3c4a36..14f8e7dd 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -27,6 +27,7 @@ export interface ParsingOptions extends ParserOptions {
     roots: BackcompatRoot[];
     lang?: string;
   };
+  rels: Rels;
 }
 
 export interface ParsedDocument {
@@ -46,6 +47,13 @@ export interface MicroformatRoot {
   value?: MicroformatProperty;
 }
 
+export interface Author {
+  name?: string;
+  value: string;
+  photo?: string;
+  url?: string;
+}
+
 export interface Image {
   alt: string;
   value?: string;
@@ -57,7 +65,12 @@ export interface Html {
   lang?: string;
 }
 
-export type MicroformatProperty = MicroformatRoot | Image | Html | string;
+export type MicroformatProperty =
+  | MicroformatRoot
+  | Author
+  | Image
+  | Html
+  | string;
 
 export type Rels = Record<string, string[]>;