From c847de9fd9306b5478bccddbc428988614bad340 Mon Sep 17 00:00:00 2001
From: yqiaoxu <yqiaoxu@tencent.com>
Date: Sun, 24 Jul 2022 22:46:54 +0800
Subject: [PATCH 1/2] fix: no-non-null-asserted-optional-chain infinite loop
 problem

---
 .../src/rules/no-non-null-asserted-optional-chain.ts       | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/packages/eslint-plugin/src/rules/no-non-null-asserted-optional-chain.ts b/packages/eslint-plugin/src/rules/no-non-null-asserted-optional-chain.ts
index 9e1b3c94656e..a00aa1e92d4a 100644
--- a/packages/eslint-plugin/src/rules/no-non-null-asserted-optional-chain.ts
+++ b/packages/eslint-plugin/src/rules/no-non-null-asserted-optional-chain.ts
@@ -104,12 +104,13 @@ export default util.createRule({
         const node = child.parent as TSESTree.TSNonNullExpression;
 
         let current = child;
-        while (current) {
+        let isRight = true;
+        while (current && isRight) {
           switch (current.type) {
             case AST_NODE_TYPES.MemberExpression:
               if (current.optional) {
                 // found an optional chain! stop traversing
-                break;
+                isRight = false;
               }
 
               current = current.object;
@@ -118,7 +119,7 @@ export default util.createRule({
             case AST_NODE_TYPES.CallExpression:
               if (current.optional) {
                 // found an optional chain! stop traversing
-                break;
+                isRight = false;
               }
 
               current = current.callee;

From ac7ccb4ae2535e144661ca260349cff786da35cb Mon Sep 17 00:00:00 2001
From: yqiaoxu <yqiaoxu@tencent.com>
Date: Fri, 19 Aug 2022 10:04:20 +0800
Subject: [PATCH 2/2] fix: code modified to a cleaner way

---
 .../no-non-null-asserted-optional-chain.ts    | 50 +++++++++++--------
 1 file changed, 28 insertions(+), 22 deletions(-)

diff --git a/packages/eslint-plugin/src/rules/no-non-null-asserted-optional-chain.ts b/packages/eslint-plugin/src/rules/no-non-null-asserted-optional-chain.ts
index a00aa1e92d4a..41fa2f8e1503 100644
--- a/packages/eslint-plugin/src/rules/no-non-null-asserted-optional-chain.ts
+++ b/packages/eslint-plugin/src/rules/no-non-null-asserted-optional-chain.ts
@@ -102,33 +102,39 @@ export default util.createRule({
       ].join(', ')](child: TSESTree.Node): void {
         // selector guarantees this assertion
         const node = child.parent as TSESTree.TSNonNullExpression;
+        const hasOptionalChain = ((): boolean => {
+          let current = child;
+          while (current) {
+            switch (current.type) {
+              case AST_NODE_TYPES.MemberExpression:
+                if (current.optional) {
+                  // found an optional chain! stop traversing
+                  return true;
+                }
 
-        let current = child;
-        let isRight = true;
-        while (current && isRight) {
-          switch (current.type) {
-            case AST_NODE_TYPES.MemberExpression:
-              if (current.optional) {
-                // found an optional chain! stop traversing
-                isRight = false;
-              }
+                current = current.object;
+                continue;
 
-              current = current.object;
-              continue;
+              case AST_NODE_TYPES.CallExpression:
+                if (current.optional) {
+                  // found an optional chain! stop traversing
+                  return true;
+                }
 
-            case AST_NODE_TYPES.CallExpression:
-              if (current.optional) {
-                // found an optional chain! stop traversing
-                isRight = false;
-              }
+                current = current.callee;
+                continue;
 
-              current = current.callee;
-              continue;
-
-            default:
-              // something that's not a ChainElement, which means this is not an optional chain we want to check
-              return;
+              default:
+                // something that's not a ChainElement, which means this is not an optional chain we want to check
+                return false;
+            }
           }
+
+          return true;
+        })();
+
+        if (!hasOptionalChain) {
+          return;
         }
 
         context.report({

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