From 27a1d89941b6f2a19e52a84db599a5bc6c58104d Mon Sep 17 00:00:00 2001
From: Amiel Martin <amiel.martin@gmail.com>
Date: Thu, 16 Sep 2021 12:22:00 -0800
Subject: [PATCH] Update src/labeler.ts

Safer access of pull_request data.

Co-authored-by: Josh Dales <30500472+joshdales@users.noreply.github.com>
---
 src/labeler.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/labeler.ts b/src/labeler.ts
index 93eeef7a..675e1d91 100644
--- a/src/labeler.ts
+++ b/src/labeler.ts
@@ -216,10 +216,10 @@ function checkAll(changedFiles: string[], globs: string[]): boolean {
 
 function checkBranch(glob: string): boolean {
   const matcher = new Minimatch(glob);
-  const branchName = github.context.payload.pull_request!.head.ref;
+  const branchName = github.context.payload.pull_request?.head.ref;
   core.debug(` checking "branch" pattern against ${branchName}`);
   core.debug(`  - ${printPattern(matcher)}`);
-  if (!matcher.match(branchName)) {
+  if (branchName || !matcher.match(branchName)) {
     core.debug(`   ${printPattern(matcher)} did not match`);
     return false;
   }