catch the case where cache-control header may not exist

byu-oit · Jan 6, 2021 · 455dd78 · 455dd78
1 parent c720249
commit 455dd78
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/lib/index.js b/lib/index.js
@@ -313,8 +313,12 @@ async function getPem (cache) {
 function getMaxAge (headers) {
   debug('getting max age from cache control header')
   const cacheControl = headers['cache-control']
-  let [, maxAge] = cacheControl.match(/max-age=(\d+)/) // Get digits
-  maxAge = parseInt(maxAge, 10)
+  let maxAge
+  if (cacheControl) {
+    const match = cacheControl.match(/max-age=(\d+)/) // Get digits
+    maxAge = match[1]
+    maxAge = parseInt(maxAge, 10)
+  }
   if (!maxAge) {
     debug('defaulting max age to 3600')
     return 3600