Fix: keyword-spacing private name compat (refs #14857) (#14946)

* Fix: keyword-spacing private name compat (refs #14857)

* Update tests/lib/rules/keyword-spacing.js

Co-authored-by: Milos Djermanovic <milos.djermanovic@gmail.com>

Co-authored-by: Milos Djermanovic <milos.djermanovic@gmail.com>

Author: nzakas

lib/rules/keyword-spacing.js

@@ -403,7 +403,15 @@ module.exports = {
          */
         function checkSpacingForForInStatement(node) {
             checkSpacingAroundFirstToken(node);
-            checkSpacingAroundTokenBefore(node.right);
+
+            const inToken = sourceCode.getTokenBefore(node.right, astUtils.isNotOpeningParenToken);
+            const previousToken = sourceCode.getTokenBefore(inToken);
+
+            if (previousToken.type !== "PrivateIdentifier") {
+                checkSpacingBefore(inToken);
+            }
+
+            checkSpacingAfter(inToken);
         }
 
         /**
@@ -419,7 +427,15 @@ module.exports = {
             } else {
                 checkSpacingAroundFirstToken(node);
             }
-            checkSpacingAround(sourceCode.getTokenBefore(node.right, astUtils.isNotOpeningParenToken));
+
+            const ofToken = sourceCode.getTokenBefore(node.right, astUtils.isNotOpeningParenToken);
+            const previousToken = sourceCode.getTokenBefore(ofToken);
+
+            if (previousToken.type !== "PrivateIdentifier") {
+                checkSpacingBefore(ofToken);
+            }
+
+            checkSpacingAfter(ofToken);
         }
 
         /**

tests/lib/rules/keyword-spacing.js

@@ -379,6 +379,10 @@ ruleTester.run("keyword-spacing", rule, {
         { code: "<Foo onClick={class {}} />", parserOptions: { ecmaVersion: 6, ecmaFeatures: { jsx: true } } },
         { code: "<Foo onClick={ class{}} />", options: [NEITHER], parserOptions: { ecmaVersion: 6, ecmaFeatures: { jsx: true } } },
 
+        // private names
+        { code: "class C {\n#x;\nfoo() {\nfor (this.#x of bar){}}}", options: [{ before: false }], parserOptions: { ecmaVersion: 2022 } },
+        { code: "class C {\n#x;\nfoo() {\nfor (this.#x in bar){}}}", options: [{ before: false }], parserOptions: { ecmaVersion: 2022 } },
+
         //----------------------------------------------------------------------
         // const
         //----------------------------------------------------------------------