Allow exclamation mark as valid header character (#745)

JakeChampion · May 28, 2020 · 92d78df · 92d78df
1 parent eadff53
commit 92d78df
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fetch.js b/fetch.js
@@ -44,7 +44,7 @@ function normalizeName(name) {
   if (typeof name !== 'string') {
     name = String(name)
   }
-  if (/[^a-z0-9\-#$%&'*+.^_`|~]/i.test(name) || name === '') {
+  if (/[^a-z0-9\-#$%&'*+.^_`|~!]/i.test(name) || name === '') {
     throw new TypeError('Invalid character in header field name')
   }
   return name.toLowerCase()