From 72c97cc750d7eebba65133e22dc066ec8777c00e Mon Sep 17 00:00:00 2001
From: alexcjohnson <alex@plot.ly>
Date: Wed, 6 Jan 2021 18:13:22 -0500
Subject: [PATCH 1/3] update component gen for MDN update Jan 2021

---
 scripts/extract-attributes.js | 2 +-
 scripts/extract-elements.js   | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/scripts/extract-attributes.js b/scripts/extract-attributes.js
index 8409d58f..ec4e1a85 100644
--- a/scripts/extract-attributes.js
+++ b/scripts/extract-attributes.js
@@ -55,7 +55,7 @@ const attributeMap = supportedAttributes.reduce((map, reactAttribute) => {
  * descriptions and supported elements.
  */
 function extractAttributes($) {
-    const $table = $('#Attribute_list').parent().find('table');
+    const $table = $('#Attribute_list,#attribute_list').parent().find('table');
     if($table.length !== 1) {
         throw new Error('page structure changed at ' + htmlURL);
     }
diff --git a/scripts/extract-elements.js b/scripts/extract-elements.js
index 14863e55..f2062cf7 100644
--- a/scripts/extract-elements.js
+++ b/scripts/extract-elements.js
@@ -13,6 +13,9 @@ const dataPath = './data/elements.txt';
 function extractElements($) {
     const excludeElements = [
         'html', 'head', 'body', 'style', 'h1–h6', 'input',
+        // out of scope, different namespaces - but Mozilla added these to the
+        // above reference page Jan 2021 so we need to exclude them now.
+        'svg', 'math',
         // obsolete, non-standard, or deprecated tags
         'image', 'dir', 'tt', 'applet', 'noembed', 'bgsound', 'menu', 'menuitem',
         'noframes'

From aea3d2be3a2528d0773cc71f76d1428b23ae95e5 Mon Sep 17 00:00:00 2001
From: alexcjohnson <alex@plot.ly>
Date: Wed, 6 Jan 2021 18:20:02 -0500
Subject: [PATCH 2/3] error message if element count changes from expectation

---
 scripts/extract-elements.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/scripts/extract-elements.js b/scripts/extract-elements.js
index f2062cf7..93ba47e7 100644
--- a/scripts/extract-elements.js
+++ b/scripts/extract-elements.js
@@ -6,6 +6,7 @@ const request = require('request');
 
 const refUrl = 'https://developer.mozilla.org/en-US/docs/Web/HTML/Element';
 const dataPath = './data/elements.txt';
+const expectedElCount = 131;
 
 /**
  * From the MDN HTML elements reference, extract a list of elements.
@@ -59,6 +60,12 @@ request(refUrl, (error, response, html) => {
     }
     const $ = cheerio.load(html);
     const elements = extractElements($);
+    if (elements.length !== expectedElCount) {
+        throw new Error(
+            'Unexpected number of elements extracted from ' + refUrl +
+            ' Check the output and edit expectedElCount if this is intended.'
+        );
+    }
     const out = elements.join('\n');
 
     fs.writeFileSync(dataPath, out);

From 08c4ce14390210d7f8104152fabda40668c9effe Mon Sep 17 00:00:00 2001
From: alexcjohnson <alex@plot.ly>
Date: Wed, 6 Jan 2021 19:45:14 -0500
Subject: [PATCH 3/3] add reference to MDN PR with the math & svg addition

---
 scripts/extract-elements.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/extract-elements.js b/scripts/extract-elements.js
index 93ba47e7..d7a5f4f8 100644
--- a/scripts/extract-elements.js
+++ b/scripts/extract-elements.js
@@ -16,6 +16,7 @@ function extractElements($) {
         'html', 'head', 'body', 'style', 'h1–h6', 'input',
         // out of scope, different namespaces - but Mozilla added these to the
         // above reference page Jan 2021 so we need to exclude them now.
+        // see https://github.com/mdn/content/pull/410
         'svg', 'math',
         // obsolete, non-standard, or deprecated tags
         'image', 'dir', 'tt', 'applet', 'noembed', 'bgsound', 'menu', 'menuitem',