diff --git a/packages/typescript-estree/src/parser.ts b/packages/typescript-estree/src/parser.ts
index 3701a8862b3..69132424ba2 100644
--- a/packages/typescript-estree/src/parser.ts
+++ b/packages/typescript-estree/src/parser.ts
@@ -351,7 +351,8 @@ function applyParserOptionsToExtra(options: TSESTreeOptions): void {
 
 function warnAboutTSVersion(): void {
   if (!isRunningSupportedTypeScriptVersion && !warnedAboutTSVersion) {
-    const isTTY = typeof process === undefined ? false : process.stdout?.isTTY;
+    const isTTY =
+      typeof process === 'undefined' ? false : process.stdout?.isTTY;
     if (isTTY) {
       const border = '=============';
       const versionWarning = [