Fix

rules/no-negation-in-equality-check.js

@@ -3,7 +3,11 @@ const {
 	fixSpaceAroundKeyword,
 	addParenthesizesToReturnOrThrowExpression,
 } = require('./fix/index.js');
-const {needsSemicolon} = require('./utils/index.js');
+const {
+	needsSemicolon,
+	isParenthesized,
+	isOnSameLine,
+} = require('./utils/index.js');
 
 const MESSAGE_ID_ERROR = 'no-negation-in-equality-check/error';
 const MESSAGE_ID_SUGGESTION = 'no-negation-in-equality-check/suggestion';
@@ -54,7 +58,7 @@ const create = context => ({
 
 						const tokenAfterBang = sourceCode.getTokenAfter(bangToken);
 
-						const {parent} = node;
+						const {parent} = binaryExpression;
 						if (
 							(parent.type === 'ReturnStatement' || parent.type === 'ThrowStatement')
 							&& !isParenthesized(binaryExpression, sourceCode)

test/snapshots/no-negation-in-equality-check.mjs.md

@@ -105,32 +105,59 @@ Generated by [AVA](https://avajs.dev).
       3 | }␊
     `
 
-## invalid(6): function x() { return! foo === bar; }
+## invalid(6): function x() { return! foo === bar; throw! foo === bar; }
 
 > Input
 
     `␊
       1 | function x() {␊
       2 | 	return!␊
       3 | 		foo === bar;␊
-      4 | }␊
+      4 | 	throw!␊
+      5 | 		foo === bar;␊
+      6 | }␊
     `
 
-> Error 1/1
+> Error 1/2
 
     `␊
       1 | function x() {␊
     > 2 | 	return!␊
         | 	      ^ Negated expression in not allowed here.␊
       3 | 		foo === bar;␊
-      4 | }␊
+      4 | 	throw!␊
+      5 | 		foo === bar;␊
+      6 | }␊
+    ␊
+    --------------------------------------------------------------------------------␊
+    Suggestion 1/1: Switch to '!==' check.␊
+      1 | function x() {␊
+      2 | 	return  (␊
+      3 | 		foo !== bar);␊
+      4 | 	throw!␊
+      5 | 		foo === bar;␊
+      6 | }␊
+    `
+
+> Error 2/2
+
+    `␊
+      1 | function x() {␊
+      2 | 	return!␊
+      3 | 		foo === bar;␊
+    > 4 | 	throw!␊
+        | 	     ^ Negated expression in not allowed here.␊
+      5 | 		foo === bar;␊
+      6 | }␊
     ␊
     --------------------------------------------------------------------------------␊
     Suggestion 1/1: Switch to '!==' check.␊
       1 | function x() {␊
-      2 | 	return ␊
-      3 | 		foo !== bar;␊
-      4 | }␊
+      2 | 	return!␊
+      3 | 		foo === bar;␊
+      4 | 	throw  (␊
+      5 | 		foo !== bar);␊
+      6 | }␊
     `
 
 ## invalid(7): foo !(a) === b