From e2e783959fac3cccae99bf05f6cec70c7602552a Mon Sep 17 00:00:00 2001
From: Ronen Amiel <ronen.amiel@gmail.com>
Date: Tue, 6 May 2025 16:45:05 +0300
Subject: [PATCH 1/2] initial implementation

---
 .../src/rules/consistent-indexed-object-style.ts     |  6 +++---
 .../rules/consistent-indexed-object-style.test.ts    | 12 ++++++++++++
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/packages/eslint-plugin/src/rules/consistent-indexed-object-style.ts b/packages/eslint-plugin/src/rules/consistent-indexed-object-style.ts
index 3b8130097218..51c186a3ba3d 100644
--- a/packages/eslint-plugin/src/rules/consistent-indexed-object-style.ts
+++ b/packages/eslint-plugin/src/rules/consistent-indexed-object-style.ts
@@ -226,9 +226,9 @@ export default createRule<Options, MessageIds>({
             ...(canFix && {
               fix: (fixer): ReturnType<ReportFixFunction> => {
                 const keyType = context.sourceCode.getText(constraint);
-                const valueType = context.sourceCode.getText(
-                  node.typeAnnotation,
-                );
+                const valueType = node.typeAnnotation
+                  ? context.sourceCode.getText(node.typeAnnotation)
+                  : 'any';
 
                 let recordText = `Record<${keyType}, ${valueType}>`;
 
diff --git a/packages/eslint-plugin/tests/rules/consistent-indexed-object-style.test.ts b/packages/eslint-plugin/tests/rules/consistent-indexed-object-style.test.ts
index 5ecceba510a3..f309f8bb07ad 100644
--- a/packages/eslint-plugin/tests/rules/consistent-indexed-object-style.test.ts
+++ b/packages/eslint-plugin/tests/rules/consistent-indexed-object-style.test.ts
@@ -904,5 +904,17 @@ interface Bar {
 }
       `,
     },
+
+    {
+      code: `
+type Bar = {
+  [k in string];
+};
+      `,
+      errors: [{ column: 12, line: 2, messageId: 'preferRecord' }],
+      output: `
+type Bar = Record<string, any>;
+      `,
+    },
   ],
 });

From ccd2307316b70a02a3fe6b2d4c14b7adfcbedf09 Mon Sep 17 00:00:00 2001
From: Ronen Amiel <ronen.amiel@gmail.com>
Date: Tue, 6 May 2025 17:43:11 +0300
Subject: [PATCH 2/2] naming

---
 .../tests/rules/consistent-indexed-object-style.test.ts       | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/eslint-plugin/tests/rules/consistent-indexed-object-style.test.ts b/packages/eslint-plugin/tests/rules/consistent-indexed-object-style.test.ts
index f309f8bb07ad..2d8b24585827 100644
--- a/packages/eslint-plugin/tests/rules/consistent-indexed-object-style.test.ts
+++ b/packages/eslint-plugin/tests/rules/consistent-indexed-object-style.test.ts
@@ -907,13 +907,13 @@ interface Bar {
 
     {
       code: `
-type Bar = {
+type Foo = {
   [k in string];
 };
       `,
       errors: [{ column: 12, line: 2, messageId: 'preferRecord' }],
       output: `
-type Bar = Record<string, any>;
+type Foo = Record<string, any>;
       `,
     },
   ],