# HG changeset patch
# User Vitaliy <vitalij@gmx.com>
# Date 1793607108 0
# Node ID ac698bbb140f04a6cf11f96d6e79d311d329251d
# Parent  bb6c97aab762ef6612fa992f1fcf689d6831e681
Bug 2077169 - [devtools] Guard build-debugger.js against null match. r=devtools-reviewers,nchevobbe

Differential Revision: https://phabricator.services.mozilla.com/D338065


diff --git a/devtools/client/shared/build/build-debugger.js b/devtools/client/shared/build/build-debugger.js
--- a/devtools/client/shared/build/build-debugger.js
+++ b/devtools/client/shared/build/build-debugger.js
@@ -52,17 +52,21 @@ function transformMC({ types: t }) {
           if (value.startsWith(".")) {
             // Create full path
             // e.g. z:\build\build\src\devtools\client\debugger\src\utils\source-queue
             let newValue = _path.join(_path.dirname(filePath), value);
 
             // Select the devtools portion of the path
             // e.g. devtools\client\debugger\src\utils\source-queue
             if (!newValue.startsWith("devtools")) {
-              newValue = newValue.match(/.*(devtools.*)/)[1];
+              const m = newValue.match(/.*(devtools.*)/);
+              if (!m) {
+                return;
+              }
+              newValue = m[1];
             }
 
             // Replace forward slashes with back slashes
             // e.g devtools/client/debugger/src/utils/source-queue
             newValue = newValue.replace(/\\/g, "/");
 
             value = newValue;
           }