no-undefined-references: add GFM table support

Closes GH-325.
Closes GH-326.

Author: AaronMoat

packages/remark-lint-no-undefined-references/index.js

@@ -106,6 +106,7 @@
  *   [*Uranus*][] is the seventh planet from the Sun.
  *
  *   [Neptune][neptune][more] is the eighth and farthest planet from the Sun.
+ *
  * @example
  *   {"label": "output", "name": "not-ok.md"}
  *
@@ -148,6 +149,21 @@
  *   1:8-1:18: Unexpected reference to undefined definition, expected corresponding definition (`mercury`) for a footnote or escaped opening bracket (`\[`) for regular text
  *
  * @example
+ *   {"gfm": true, "label": "input", "name": "gfm-table.md"}
+ *
+ *   | [Planet]          | [Radius]  |
+ *   | ----------------- | --------- |
+ *   | [Mercury]         | 2439.7 km |
+ *
+ *   [planet]: https://example.com/planet/
+ *
+ * @example
+ *   {"gfm": true, "label": "output", "name": "gfm-table.md"}
+ *
+ *   1:23-1:31: Unexpected reference to undefined definition, expected corresponding definition (`radius`) for a link or escaped opening bracket (`\[`) for regular text
+ *   3:3-3:12: Unexpected reference to undefined definition, expected corresponding definition (`mercury`) for a link or escaped opening bracket (`\[`) for regular text
+ *
+ * @example
  *   {"config": {"allowShortcutLink": true}, "label": "input", "name": "allow-shortcut-link.md"}
  *
  *   [Mercury] is the first planet from the Sun and the smallest in the Solar
@@ -244,7 +260,11 @@ const remarkLintNoUndefinedReferences = lintRule(
         footnoteDefinitionIdentifiers.add(normalizeIdentifier(node.identifier))
       }
 
-      if (node.type === 'heading' || node.type === 'paragraph') {
+      if (
+        node.type === 'heading' ||
+        node.type === 'paragraph' ||
+        node.type === 'tableCell'
+      ) {
         phrasingStacks.push([...parents, node])
       }
     })

packages/remark-lint-no-undefined-references/package.json

@@ -2,6 +2,7 @@
   "author": "Titus Wormer <[email protected]> (https://wooorm.com)",
   "bugs": "https://github.com/remarkjs/remark-lint/issues",
   "contributors": [
+    "Aaron Moat <[email protected]>",
     "Merlijn Vos <[email protected]>",
     "Murderlon <[email protected]>",
     "Titus Wormer <[email protected]>"

packages/remark-lint-no-undefined-references/readme.md

@@ -289,6 +289,28 @@ Solar System.
 1:8-1:18: Unexpected reference to undefined definition, expected corresponding definition (`mercury`) for a footnote or escaped opening bracket (`\[`) for regular text
 ```
 
+##### `gfm-table.md`
+
+###### In
+
+> 👉 **Note**: this example uses
+> GFM ([`remark-gfm`][github-remark-gfm]).
+
+```markdown
+| [Planet]          | [Radius]  |
+| ----------------- | --------- |
+| [Mercury]         | 2439.7 km |
+
+[planet]: https://example.com/planet/
+```
+
+###### Out
+
+```text
+1:23-1:31: Unexpected reference to undefined definition, expected corresponding definition (`radius`) for a link or escaped opening bracket (`\[`) for regular text
+3:3-3:12: Unexpected reference to undefined definition, expected corresponding definition (`mercury`) for a link or escaped opening bracket (`\[`) for regular text
+```
+
 ##### `allow-shortcut-link.md`
 
 When configured with `{ allowShortcutLink: true }`.