From cc2f3183834473f9280cb0c3508d38744843cf94 Mon Sep 17 00:00:00 2001
From: Sasha Kondrashov <sasha@thisminute.org>
Date: Sat, 26 Jul 2025 20:21:47 -0400
Subject: [PATCH] add no-unnecessary-type-conversion to strict-type-checked
 ruleset

---
 .../src/configs/eslintrc/strict-type-checked-only.ts             | 1 +
 .../eslint-plugin/src/configs/eslintrc/strict-type-checked.ts    | 1 +
 .../eslint-plugin/src/configs/flat/strict-type-checked-only.ts   | 1 +
 packages/eslint-plugin/src/configs/flat/strict-type-checked.ts   | 1 +
 .../eslint-plugin/src/rules/no-unnecessary-type-conversion.ts    | 1 +
 5 files changed, 5 insertions(+)

diff --git a/packages/eslint-plugin/src/configs/eslintrc/strict-type-checked-only.ts b/packages/eslint-plugin/src/configs/eslintrc/strict-type-checked-only.ts
index 00e4ca12f8a4..b7c48cfc4474 100644
--- a/packages/eslint-plugin/src/configs/eslintrc/strict-type-checked-only.ts
+++ b/packages/eslint-plugin/src/configs/eslintrc/strict-type-checked-only.ts
@@ -30,6 +30,7 @@ export = {
     '@typescript-eslint/no-unnecessary-template-expression': 'error',
     '@typescript-eslint/no-unnecessary-type-arguments': 'error',
     '@typescript-eslint/no-unnecessary-type-assertion': 'error',
+    '@typescript-eslint/no-unnecessary-type-conversion': 'error',
     '@typescript-eslint/no-unnecessary-type-parameters': 'error',
     '@typescript-eslint/no-unsafe-argument': 'error',
     '@typescript-eslint/no-unsafe-assignment': 'error',
diff --git a/packages/eslint-plugin/src/configs/eslintrc/strict-type-checked.ts b/packages/eslint-plugin/src/configs/eslintrc/strict-type-checked.ts
index 43d1df44b53b..4f35f99a428e 100644
--- a/packages/eslint-plugin/src/configs/eslintrc/strict-type-checked.ts
+++ b/packages/eslint-plugin/src/configs/eslintrc/strict-type-checked.ts
@@ -51,6 +51,7 @@ export = {
     '@typescript-eslint/no-unnecessary-type-arguments': 'error',
     '@typescript-eslint/no-unnecessary-type-assertion': 'error',
     '@typescript-eslint/no-unnecessary-type-constraint': 'error',
+    '@typescript-eslint/no-unnecessary-type-conversion': 'error',
     '@typescript-eslint/no-unnecessary-type-parameters': 'error',
     '@typescript-eslint/no-unsafe-argument': 'error',
     '@typescript-eslint/no-unsafe-assignment': 'error',
diff --git a/packages/eslint-plugin/src/configs/flat/strict-type-checked-only.ts b/packages/eslint-plugin/src/configs/flat/strict-type-checked-only.ts
index 4d424ec0968f..0b42bf3aa6cc 100644
--- a/packages/eslint-plugin/src/configs/flat/strict-type-checked-only.ts
+++ b/packages/eslint-plugin/src/configs/flat/strict-type-checked-only.ts
@@ -43,6 +43,7 @@ export default (
       '@typescript-eslint/no-unnecessary-template-expression': 'error',
       '@typescript-eslint/no-unnecessary-type-arguments': 'error',
       '@typescript-eslint/no-unnecessary-type-assertion': 'error',
+      '@typescript-eslint/no-unnecessary-type-conversion': 'error',
       '@typescript-eslint/no-unnecessary-type-parameters': 'error',
       '@typescript-eslint/no-unsafe-argument': 'error',
       '@typescript-eslint/no-unsafe-assignment': 'error',
diff --git a/packages/eslint-plugin/src/configs/flat/strict-type-checked.ts b/packages/eslint-plugin/src/configs/flat/strict-type-checked.ts
index 8753687ce006..483fed907f32 100644
--- a/packages/eslint-plugin/src/configs/flat/strict-type-checked.ts
+++ b/packages/eslint-plugin/src/configs/flat/strict-type-checked.ts
@@ -64,6 +64,7 @@ export default (
       '@typescript-eslint/no-unnecessary-type-arguments': 'error',
       '@typescript-eslint/no-unnecessary-type-assertion': 'error',
       '@typescript-eslint/no-unnecessary-type-constraint': 'error',
+      '@typescript-eslint/no-unnecessary-type-conversion': 'error',
       '@typescript-eslint/no-unnecessary-type-parameters': 'error',
       '@typescript-eslint/no-unsafe-argument': 'error',
       '@typescript-eslint/no-unsafe-assignment': 'error',
diff --git a/packages/eslint-plugin/src/rules/no-unnecessary-type-conversion.ts b/packages/eslint-plugin/src/rules/no-unnecessary-type-conversion.ts
index b9471c87d2bd..09af31518b11 100644
--- a/packages/eslint-plugin/src/rules/no-unnecessary-type-conversion.ts
+++ b/packages/eslint-plugin/src/rules/no-unnecessary-type-conversion.ts
@@ -26,6 +26,7 @@ export default createRule<Options, MessageIds>({
     docs: {
       description:
         'Disallow conversion idioms when they do not change the type or value of the expression',
+      recommended: 'strict',
       requiresTypeChecking: true,
     },
     hasSuggestions: true,