fix: false positives in 5.4.0 for functions that aren't ESLint rules

fixes #450

Author: aladdin-add

lib/utils.js

@@ -139,15 +139,26 @@ function getRuleExportsESM(ast, scopeManager) {
           possibleNodes.push(specifier.local);
         }
         if (statement.declaration) {
-          if (statement.declaration.type === 'VariableDeclaration') {
-            for (const declarator of statement.declaration.declarations) {
-              if (declarator.init) {
-                possibleNodes.push(declarator.init);
-              }
-            }
-          } else {
-            possibleNodes.push(statement.declaration);
-          }
+          let nodes = [];
+
+          nodes =
+            statement.declaration.type === 'VariableDeclaration'
+              ? statement.declaration.declarations.map(
+                  (declarator) => declarator.init
+                )
+              : [statement.declaration];
+
+          // named exports like `export const rule = { ... };`
+          // skip if it's function-style to avoid false positives
+          // refs: https://github.com/eslint-community/eslint-plugin-eslint-plugin/issues/450
+          possibleNodes.push(
+            ...nodes.filter(
+              (node) =>
+                node &&
+                node.type !== 'FunctionDeclaration' &&
+                node.type !== 'FunctionExpression'
+            )
+          );
         }
         break;
       }

tests/lib/utils.js

@@ -86,6 +86,14 @@ describe('utils', () => {
         'export default function () { return {}; }',
         'export default function (foo, bar) { return {}; }',
 
+        // named export of functions
+        // refs: https://github.com/eslint-community/eslint-plugin-eslint-plugin/issues/450
+        'export function foo(options) { return {}; }',
+        'export async function foo(options) { return {}; }',
+        'export const foo = function (options) { return {}; }',
+        'export function foo(options) { return; }',
+        'export function foo({opt1, opt2}) { return {}; }',
+
         // Incorrect TypeScript helper structure:
         'export default foo()({ create() {}, meta: {} });',
         'export default foo().bar({ create() {}, meta: {} });',