Update

node_modules/@eslint-community/eslint-utils/index.mjs

@@ -262,9 +262,10 @@ function getFunctionHeadLocation(node, sourceCode) {
         start = arrowToken.loc.start;
         end = arrowToken.loc.end;
     } else if (
-        parent.type === "Property" ||
-        parent.type === "MethodDefinition" ||
-        parent.type === "PropertyDefinition"
+        parent &&
+        (parent.type === "Property" ||
+            parent.type === "MethodDefinition" ||
+            parent.type === "PropertyDefinition")
     ) {
         start = /** @type {SourceLocation} */ (parent.loc).start;
         end = getOpeningParenOfParams(node, sourceCode).loc.start;
@@ -1302,6 +1303,11 @@ function getPropertyName(node, initialScope) {
 // eslint-disable-next-line complexity
 function getFunctionNameWithKind(node, sourceCode) {
     const parent = /** @type {RuleNode} */ (node).parent;
+
+    if (!parent) {
+        return ""
+    }
+
     const tokens = [];
     const isObjectMethod = parent.type === "Property" && parent.value === node;
     const isClassMethod =
@@ -1655,6 +1661,10 @@ function hasSideEffect(node, sourceCode, options = {}) {
 function getParentSyntaxParen(node, sourceCode) {
     const parent = /** @type {RuleNode} */ (node).parent;
 
+    if (!parent) {
+        return null
+    }
+
     switch (parent.type) {
         case "CallExpression":
         case "NewExpression":
@@ -2308,6 +2318,9 @@ class ReferenceTracker {
         }
 
         const parent = /** @type {RuleNode} */ (node).parent;
+        if (!parent) {
+            return
+        }
         if (parent.type === "MemberExpression") {
             if (parent.object === node) {
                 const key = getPropertyName(parent);