From 87dc1d0fe374caa0e96b199b7a344da334f28bfb Mon Sep 17 00:00:00 2001
From: Rhys Arkins <rhys@arkins.net>
Date: Tue, 21 Dec 2021 16:12:09 +0100
Subject: [PATCH] fix: check for matchResult
---
.../npm/update/locked-dependency/yarn-lock/replace.ts | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/lib/manager/npm/update/locked-dependency/yarn-lock/replace.ts b/lib/manager/npm/update/locked-dependency/yarn-lock/replace.ts
index f2e9adfc68..7e09f3c835 100644
--- a/lib/manager/npm/update/locked-dependency/yarn-lock/replace.ts
+++ b/lib/manager/npm/update/locked-dependency/yarn-lock/replace.ts
@@ -1,3 +1,4 @@
+import { logger } from '../../../../../logger';
import { regEx } from '../../../../../util/regex';
export function replaceConstraintVersion(
@@ -16,6 +17,14 @@ export function replaceConstraintVersion(
const matchString = `(${escaped}((",|,)[^\n:]+)?:\n)(.*\n)*?(\\s+dependencies|\n[@a-z])`;
// yarn will fill in the details later
const matchResult = regEx(matchString).exec(lockFileContent);
+ // istanbul ignore if
+ if (!matchResult) {
+ logger.debug(
+ { depName, constraint, newVersion },
+ 'Could not find constraint in lock file'
+ );
+ return lockFileContent;
+ }
let constraintLine = matchResult[1];
if (newConstraint) {
const newDepNameConstraint = `${depName}@${newConstraint}`;
--
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