trim referrer cookie values

Author: dnywh

src/utils/attributionUtils.ts

@@ -49,10 +49,11 @@ const getCookie = (name: string): string | null => {
   if (!value) return null;
 
   const cleanedValue = normaliseReferrer(value);
+  const trimmedValue = cleanedValue.trim();
 
-  if (!cleanedValue.trim()) return null;
+  if (!trimmedValue) return null;
 
-  return cleanedValue;
+  return trimmedValue;
 };
 
 const getExternalDocumentReferrer = (): string | null => {

src/utils/referrer.ts

@@ -10,7 +10,7 @@ export function normaliseReferrer(
 export function normaliseReferrer(referrer: string | undefined) {
   if (referrer === undefined) return undefined;
 
-  let current = referrer;
+  let current = referrer.trim();
 
   for (let i = 0; i < 3 && encodedReferrerPrefix.test(current); i += 1) {
     try {