Exclude htmlFlow content by default for filterByTypes, opt in as needed.

test/headings_bad.md

@@ -5,3 +5,9 @@
 ## Heading 2
 
 #### Heading 4 {MD001}
+
+<p>
+###### Not heading
+</p>
+
+<!-- markdownlint-disable-file no-inline-html -->

test/markdownlint-test-micromark.mjs

@@ -63,15 +63,40 @@ test("getMicromarkEvents/filterByPredicate", async(t) => {
   t.deepEqual(tokenTypes, eventTypes);
 });
 
-test("filterByTypes", async(t) => {
-  t.plan(8);
-  const filtered = filterByTypes(
-    await testTokens,
-    [ "atxHeadingText", "codeText", "htmlText", "setextHeadingText" ]
-  );
+test("filterByTypes, htmlFlow false", async(t) => {
+  t.plan(7);
+  const tokens = await testTokens;
+  // eslint-disable-next-line jsdoc/valid-types
+  /** @type import("../micromark/micromark.cjs").TokenType[] */
+  const types = [ "atxHeadingText", "codeText", "htmlText", "setextHeadingText" ];
+  const filtered = filterByTypes(tokens, types);
+  // Using flat tokens
   for (const token of filtered) {
     t.true(token.type.endsWith("Text"));
   }
+  // Not using flat tokens
+  t.deepEqual(
+    filtered,
+    filterByTypes([ ...tokens], types)
+  )
+});
+
+test("filterByTypes, htmlFlow true", async(t) => {
+  t.plan(9);
+  const tokens = await testTokens;
+  // eslint-disable-next-line jsdoc/valid-types
+  /** @type import("../micromark/micromark.cjs").TokenType[] */
+  const types = [ "atxHeadingText", "codeText", "htmlText", "setextHeadingText" ];
+  // Using flat tokens
+  const filtered = filterByTypes(tokens, types, true);
+  for (const token of filtered) {
+    t.true(token.type.endsWith("Text"));
+  }
+  // Not using flat tokens
+  t.deepEqual(
+    filtered,
+    filterByTypes([ ...tokens], types, true)
+  )
 });
 
 test("filterByPredicate/filterByTypes", async(t) => {
@@ -79,6 +104,6 @@ test("filterByPredicate/filterByTypes", async(t) => {
   const tokens = await testTokens;
   const byPredicate = filterByPredicate(tokens, () => true);
   const allTypes = new Set(byPredicate.map(((token) => token.type)));
-  const byTypes = filterByTypes(tokens, [ ...allTypes.values() ]);
+  const byTypes = filterByTypes(tokens, [ ...allTypes.values() ], true);
   t.deepEqual(byPredicate, byTypes);
 });

test/no-alt-text.md

@@ -64,6 +64,10 @@ Uppercase image tag with alt attribute set
 
 Uppercase image tag with no alt set <IMG SRC="cat.png" /> {MD045}
 
+<p>
+  <img src="image.png" /> {MD045}
+</p>
+
 <!-- markdownlint-restore no-inline-html -->
 
 [notitle]: image.jpg

test/snapshots/markdownlint-test-scenarios.js.md

@@ -16101,6 +16101,12 @@ Generated by [AVA](https://avajs.dev).
       ## Heading 2␊
       ␊
       #### Heading 4 {MD001}␊
+      ␊
+      <p>␊
+      ###### Not heading␊
+      </p>␊
+      ␊
+      <!-- markdownlint-disable-file no-inline-html -->␊
       `,
     }
 
@@ -39577,6 +39583,22 @@ Generated by [AVA](https://avajs.dev).
             'no-alt-text',
           ],
         },
+        {
+          errorContext: null,
+          errorDetail: null,
+          errorRange: [
+            3,
+            23,
+          ],
+          fixInfo: null,
+          lineNumber: 68,
+          ruleDescription: 'Images should have alternate text (alt text)',
+          ruleInformation: 'https://github.com/DavidAnson/markdownlint/blob/v0.0.0/doc/md045.md',
+          ruleNames: [
+            'MD045',
+            'no-alt-text',
+          ],
+        },
       ],
       fixed: `# Images with and without alternate text␊
       ␊
@@ -39644,6 +39666,10 @@ Generated by [AVA](https://avajs.dev).
       ␊
       Uppercase image tag with no alt set <IMG SRC="cat.png" /> {MD045}␊
       ␊
+      <p>␊
+        <img src="image.png" /> {MD045}␊
+      </p>␊
+      ␊
       <!-- markdownlint-restore no-inline-html -->␊
       ␊
       [notitle]: image.jpg␊