Account for null node

Author: JoshuaKGoldberg

README.md

@@ -5312,6 +5312,23 @@ export function transient<T>(target?: T): T {
  * @internal
  */
 // Settings: {"jsdoc":{"mode":"typescript"}}
+
+interface WebTwain {
+  /**
+   * Converts the images specified by the indices to base64 synchronously.
+   * @function WebTwain#ConvertToBase64
+   * @returns {Base64Result}
+
+  ConvertToBase64(): Base64Result;
+  */
+
+  /**
+   * Converts the images specified by the indices to base64 asynchronously.
+   * @function WebTwain#ConvertToBase64
+   * @returns {boolean}
+   */
+  ConvertToBase64(): boolean;
+}
 ````
 
 

src/rules/checkTagNames.js

@@ -123,7 +123,9 @@ export default iterateJsdoc(({
       return false;
     }
 
-    if (context.getFilename().endsWith('.d.ts') && node.parent.type === 'Program') {
+    if (context.getFilename().endsWith('.d.ts') && [
+      'Program', null, undefined,
+    ].includes(node?.parent?.type)) {
       return false;
     }
 

test/rules/assertions/checkTagNames.js

@@ -1282,5 +1282,26 @@ export default {
         },
       },
     },
+    {
+      code: `
+        interface WebTwain {
+          /**
+           * Converts the images specified by the indices to base64 synchronously.
+           * @function WebTwain#ConvertToBase64
+           * @returns {Base64Result}
+       
+          ConvertToBase64(): Base64Result;
+          */
+
+          /**
+           * Converts the images specified by the indices to base64 asynchronously.
+           * @function WebTwain#ConvertToBase64
+           * @returns {boolean}
+           */
+          ConvertToBase64(): boolean;
+        }
+      `,
+      parser: require.resolve('@typescript-eslint/parser'),
+    },
   ],
 };