update as per flynn's suggestion

nucleardreamer · Sep 13, 2018 · 7c335b9 · 7c335b9
1 parent 13cab44
commit 7c335b9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/core.js b/lib/core.js
@@ -70,7 +70,7 @@ class Core extends EventEmitter2 {
     if (!this.ready) {
       throw new Error("Oak isn't ready yet, wait your turn!")
     }
-    if (_.isNull(opts.url)) {
+    if (!_.isString(opts.url) || !_.isFunction(opts.url) {
       throw new Error('Oak requires an options url!')
     }