From d2fecde3156576eaa749ed31c90a6af5f3c03a0a Mon Sep 17 00:00:00 2001
From: yeonjuan <yeonjuan93@naver.com>
Date: Sat, 29 Oct 2022 23:12:40 +0900
Subject: [PATCH 1/4] fix(eslint-plugin): [no-extra-parens] handle type
 assertion in extends clause

---
 packages/eslint-plugin/src/rules/no-extra-parens.ts | 13 ++++++++++++-
 .../tests/rules/no-extra-parens.test.ts             |  8 ++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/packages/eslint-plugin/src/rules/no-extra-parens.ts b/packages/eslint-plugin/src/rules/no-extra-parens.ts
index 3a4a5973074d..9b4a12cf71a8 100644
--- a/packages/eslint-plugin/src/rules/no-extra-parens.ts
+++ b/packages/eslint-plugin/src/rules/no-extra-parens.ts
@@ -141,7 +141,18 @@ export default util.createRule<Options, MessageIds>({
       },
       BinaryExpression: binaryExp,
       CallExpression: callExp,
-      // ClassDeclaration
+      ClassDeclaration(node) {
+        if (node.superClass?.type === AST_NODE_TYPES.TSAsExpression) {
+          return rules.ClassDeclaration({
+            ...node,
+            superClass: {
+              ...node.superClass,
+              type: AST_NODE_TYPES.SequenceExpression as any,
+            },
+          });
+        }
+        return rules.ClassDeclaration(node);
+      },
       // ClassExpression
       ConditionalExpression(node) {
         // reduces the precedence of the node so the rule thinks it needs to be wrapped
diff --git a/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts b/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
index 6a9e87111aa0..379b93b8305e 100644
--- a/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
+++ b/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
@@ -141,6 +141,7 @@ t.true((me.get as SinonStub).calledWithExactly('/foo', other));
 t.true((<SinonStub>me.get).calledWithExactly('/foo', other));
 (requestInit.headers as Headers).get('Cookie');
 (<Headers> requestInit.headers).get('Cookie');
+class Foo extends (Bar as any) {}
       `,
       parserOptions: {
         ecmaFeatures: {
@@ -254,6 +255,7 @@ new a<import('')>((1));
 a<(A)>((1));
 async function f(arg: Promise<any>) { await (arg); }
 async function f(arg: any) { await ((arg as Promise<void>)); }
+class Foo extends ((Bar as any)) {}
       `,
       output: `
 a = b * c;
@@ -267,6 +269,7 @@ new a<import('')>(1);
 a<(A)>(1);
 async function f(arg: Promise<any>) { await arg; }
 async function f(arg: any) { await (arg as Promise<void>); }
+class Foo extends (Bar as any) {}
       `,
       errors: [
         {
@@ -324,6 +327,11 @@ async function f(arg: any) { await (arg as Promise<void>); }
           line: 12,
           column: 37,
         },
+        {
+          messageId: 'unexpected',
+          line: 13,
+          column: 20,
+        },
       ],
     }),
     ...batchedSingleLineTests({

From 0a93e9f42b4917564d55ae997fb1a65a415d4872 Mon Sep 17 00:00:00 2001
From: yeonjuan <yeonjuan93@naver.com>
Date: Sat, 29 Oct 2022 23:54:24 +0900
Subject: [PATCH 2/4] Add test cases

---
 packages/eslint-plugin/tests/rules/no-extra-parens.test.ts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts b/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
index 379b93b8305e..9e730c8e5535 100644
--- a/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
+++ b/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
@@ -256,6 +256,7 @@ a<(A)>((1));
 async function f(arg: Promise<any>) { await (arg); }
 async function f(arg: any) { await ((arg as Promise<void>)); }
 class Foo extends ((Bar as any)) {}
+class Foo extends (Bar) {}
       `,
       output: `
 a = b * c;
@@ -270,6 +271,7 @@ a<(A)>(1);
 async function f(arg: Promise<any>) { await arg; }
 async function f(arg: any) { await (arg as Promise<void>); }
 class Foo extends (Bar as any) {}
+class Foo extends Bar {}
       `,
       errors: [
         {
@@ -332,6 +334,11 @@ class Foo extends (Bar as any) {}
           line: 13,
           column: 20,
         },
+        {
+          messageId: 'unexpected',
+          line: 14,
+          column: 19,
+        },
       ],
     }),
     ...batchedSingleLineTests({

From f9d980fc0a9753802d27a8228c591ff0c9478a88 Mon Sep 17 00:00:00 2001
From: yeonjuan <yeonjuan93@naver.com>
Date: Sun, 30 Oct 2022 00:01:05 +0900
Subject: [PATCH 3/4] Handle class expression

---
 .../eslint-plugin/src/rules/no-extra-parens.ts    | 13 ++++++++++++-
 .../tests/rules/no-extra-parens.test.ts           | 15 +++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/packages/eslint-plugin/src/rules/no-extra-parens.ts b/packages/eslint-plugin/src/rules/no-extra-parens.ts
index 9b4a12cf71a8..a44276a0a761 100644
--- a/packages/eslint-plugin/src/rules/no-extra-parens.ts
+++ b/packages/eslint-plugin/src/rules/no-extra-parens.ts
@@ -153,7 +153,18 @@ export default util.createRule<Options, MessageIds>({
         }
         return rules.ClassDeclaration(node);
       },
-      // ClassExpression
+      ClassExpression(node) {
+        if (node.superClass?.type === AST_NODE_TYPES.TSAsExpression) {
+          return rules.ClassExpression({
+            ...node,
+            superClass: {
+              ...node.superClass,
+              type: AST_NODE_TYPES.SequenceExpression as any,
+            },
+          });
+        }
+        return rules.ClassExpression(node);
+      },
       ConditionalExpression(node) {
         // reduces the precedence of the node so the rule thinks it needs to be wrapped
         if (util.isTypeAssertion(node.test)) {
diff --git a/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts b/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
index 9e730c8e5535..0960c7e40825 100644
--- a/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
+++ b/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
@@ -142,6 +142,7 @@ t.true((<SinonStub>me.get).calledWithExactly('/foo', other));
 (requestInit.headers as Headers).get('Cookie');
 (<Headers> requestInit.headers).get('Cookie');
 class Foo extends (Bar as any) {}
+const foo = class extends (Bar as any) {}
       `,
       parserOptions: {
         ecmaFeatures: {
@@ -257,6 +258,8 @@ async function f(arg: Promise<any>) { await (arg); }
 async function f(arg: any) { await ((arg as Promise<void>)); }
 class Foo extends ((Bar as any)) {}
 class Foo extends (Bar) {}
+const foo = class extends ((Bar as any)) {}
+const foo = class extends (Bar) {}
       `,
       output: `
 a = b * c;
@@ -272,6 +275,8 @@ async function f(arg: Promise<any>) { await arg; }
 async function f(arg: any) { await (arg as Promise<void>); }
 class Foo extends (Bar as any) {}
 class Foo extends Bar {}
+const foo = class extends (Bar as any) {}
+const foo = class extends Bar {}
       `,
       errors: [
         {
@@ -339,6 +344,16 @@ class Foo extends Bar {}
           line: 14,
           column: 19,
         },
+        {
+          messageId: 'unexpected',
+          line: 15,
+          column: 28,
+        },
+        {
+          messageId: 'unexpected',
+          line: 16,
+          column: 27,
+        },
       ],
     }),
     ...batchedSingleLineTests({

From a45d11302b22822b7465901540cd6e58e1ee8279 Mon Sep 17 00:00:00 2001
From: yeonjuan <yeonjuan93@naver.com>
Date: Sun, 30 Oct 2022 00:11:38 +0900
Subject: [PATCH 4/4] Add test cases

---
 packages/eslint-plugin/tests/rules/no-extra-parens.test.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts b/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
index 0960c7e40825..369f55101f28 100644
--- a/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
+++ b/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
@@ -141,7 +141,9 @@ t.true((me.get as SinonStub).calledWithExactly('/foo', other));
 t.true((<SinonStub>me.get).calledWithExactly('/foo', other));
 (requestInit.headers as Headers).get('Cookie');
 (<Headers> requestInit.headers).get('Cookie');
+class Foo {}
 class Foo extends (Bar as any) {}
+const foo = class {};
 const foo = class extends (Bar as any) {}
       `,
       parserOptions: {

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