don't send empty Prefer header

Reading-eScience-Centre · Mar 24, 2016 · 1064646 · 1064646
1 parent 86937e2
commit 1064646
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/api.js b/src/api.js
@@ -386,6 +386,9 @@ export class API {
     if (options.range) {
       uris.push(Range)
     }
+    if (uris.length === 0) {
+      return {}
+    }
     return {
       Prefer: 'return=representation; ' + 
               'include="' + uris.join(' ') + '"'