Stabilize importLocalScripts (#100)

Author: Tewr

src/BlazorWorker/BlazorWorker.js

@@ -209,7 +209,13 @@ window.BlazorWorker = function () {
         const empty = {};
 
         // Import module script from a path relative to approot
-        self.importLocalScripts = async (urls) => {
+        self.importLocalScripts = async (...urls) => {
+            if (urls === undefined || urls === null) {
+                return;
+            }
+            if (!urls.map) {
+                urls = [urls]
+            }
             const mappedUrls = urls.map(url => initConf.appRoot + (url.startsWith('/') ? '' : '/') + url);
             for (const url of mappedUrls) {
                 await import(url);