From f07d7857652521a9c3ec3fd08052221803504250 Mon Sep 17 00:00:00 2001
From: yeonjuan <yeonjuan93@naver.com>
Date: Sat, 6 Aug 2022 21:53:30 +0900
Subject: [PATCH 1/2] fix(eslint-plugin): [no-extra-parens] handle await with
 type assertion

---
 packages/eslint-plugin/src/rules/no-extra-parens.ts | 13 +++++++++++++
 .../tests/rules/no-extra-parens.test.ts             | 11 ++++++++++-
 2 files changed, 23 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 24659aedfe4b..c6f4a0e3518c 100644
--- a/packages/eslint-plugin/src/rules/no-extra-parens.ts
+++ b/packages/eslint-plugin/src/rules/no-extra-parens.ts
@@ -123,6 +123,19 @@ export default util.createRule<Options, MessageIds>({
       },
       // AssignmentExpression
       // AwaitExpression
+      AwaitExpression(node) {
+        if (util.isTypeAssertion(node.argument)) {
+          // reduces the precedence of the node so the rule thinks it needs to be rapped
+          return rules.AwaitExpression({
+            ...node,
+            argument: {
+              ...node.argument,
+              type: AST_NODE_TYPES.SequenceExpression as any,
+            },
+          });
+        }
+        return rules.AwaitExpression(node);
+      },
       BinaryExpression: binaryExp,
       CallExpression: callExp,
       // ClassDeclaration
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 5f5dc37896fa..61f9bb9fcce3 100644
--- a/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
+++ b/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
@@ -19,6 +19,7 @@ ruleTester.run('no-extra-parens', rule, {
   valid: [
     ...batchedSingleLineTests({
       code: `
+async function f(arg: any) { await (arg as Promise<void>); }
 (0).toString();
 (function(){}) ? a() : b();
 (/^a$/).test(x);
@@ -238,6 +239,8 @@ for (a of (b));
 typeof (a);
 a<import('')>((1));
 new a<import('')>((1));
+a<(A)>((1));
+async function f(arg: any) { await ((arg as Promise<void>)); }
       `,
       output: `
 a = b * c;
@@ -248,7 +251,8 @@ for (a of b);
 typeof a;
 a<import('')>(1);
 new a<import('')>(1);
-a<(A)>((1));
+a<(A)>(1);
+async function f(arg: any) { await (arg as Promise<void>); }
       `,
       errors: [
         {
@@ -296,6 +300,11 @@ a<(A)>((1));
           line: 10,
           column: 8,
         },
+        {
+          messageId: 'unexpected',
+          line: 11,
+          column: 37,
+        },
       ],
     }),
     ...batchedSingleLineTests({

From dc3656dbcdaed720abfb4fa979a52fe64cce7538 Mon Sep 17 00:00:00 2001
From: yeonjuan <yeonjuan93@naver.com>
Date: Sun, 7 Aug 2022 19:26:07 +0900
Subject: [PATCH 2/2] apply review

---
 packages/eslint-plugin/src/rules/no-extra-parens.ts       | 5 ++---
 .../eslint-plugin/tests/rules/no-extra-parens.test.ts     | 8 ++++++++
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/packages/eslint-plugin/src/rules/no-extra-parens.ts b/packages/eslint-plugin/src/rules/no-extra-parens.ts
index c6f4a0e3518c..71bfc4f10dc0 100644
--- a/packages/eslint-plugin/src/rules/no-extra-parens.ts
+++ b/packages/eslint-plugin/src/rules/no-extra-parens.ts
@@ -122,10 +122,9 @@ export default util.createRule<Options, MessageIds>({
         }
       },
       // AssignmentExpression
-      // AwaitExpression
       AwaitExpression(node) {
         if (util.isTypeAssertion(node.argument)) {
-          // reduces the precedence of the node so the rule thinks it needs to be rapped
+          // reduces the precedence of the node so the rule thinks it needs to be wrapped
           return rules.AwaitExpression({
             ...node,
             argument: {
@@ -161,7 +160,7 @@ export default util.createRule<Options, MessageIds>({
           });
         }
         if (util.isTypeAssertion(node.alternate)) {
-          // reduces the precedence of the node so the rule thinks it needs to be rapped
+          // reduces the precedence of the node so the rule thinks it needs to be wrapped
           return rules.ConditionalExpression({
             ...node,
             alternate: {
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 61f9bb9fcce3..5a72b6015a21 100644
--- a/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
+++ b/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
@@ -20,6 +20,7 @@ ruleTester.run('no-extra-parens', rule, {
     ...batchedSingleLineTests({
       code: `
 async function f(arg: any) { await (arg as Promise<void>); }
+async function f(arg: Promise<any>) { await arg; }
 (0).toString();
 (function(){}) ? a() : b();
 (/^a$/).test(x);
@@ -240,6 +241,7 @@ typeof (a);
 a<import('')>((1));
 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>)); }
       `,
       output: `
@@ -252,6 +254,7 @@ typeof a;
 a<import('')>(1);
 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>); }
       `,
       errors: [
@@ -303,6 +306,11 @@ async function f(arg: any) { await (arg as Promise<void>); }
         {
           messageId: 'unexpected',
           line: 11,
+          column: 45,
+        },
+        {
+          messageId: 'unexpected',
+          line: 12,
           column: 37,
         },
       ],

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