From 5659295b883034296d84aaefc3b00072797a63f9 Mon Sep 17 00:00:00 2001
From: Karl-Philipp Wulfert <krlwlfrt@gmail.com>
Date: Tue, 28 May 2019 11:05:45 +0200
Subject: [PATCH] fix: fix regression with copyright years

---
 src/common.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/common.ts b/src/common.ts
index a67dd41b..ddffd018 100644
--- a/src/common.ts
+++ b/src/common.ts
@@ -534,7 +534,7 @@ export function checkCopyrightYears(path: PathLike, subDir: PathLike): void {
       .map((date) => parseInt(date.split('-')[0], 10))
       .filter((year) => {
         const stringYear = year.toString();
-        if (seen.indexOf(year) >= 0 || stringYear.match(/[0-9]{4}/) !== null) {
+        if (seen.indexOf(year) >= 0 || stringYear.match(/[0-9]{4}/) === null) {
           return false;
         }