Make setters optional (#2193)

systemjs · Jun 1, 2020 · d37f7ca · d37f7ca
1 parent 8d9bca4
commit d37f7ca
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/system-core.js b/src/system-core.js
@@ -113,8 +113,10 @@ function getOrCreateLoad (loader, id, firstParentUrl) {
         }
       }
       if (changed)
-        for (var i = 0; i < importerSetters.length; i++)
-          importerSetters[i](ns);
+        for (var i = 0; i < importerSetters.length; i++) {
+          var setter = importerSetters[i];
+          if (setter) setter(ns);
+        }
       return value;
     }
     var declared = registration[1](_export, registration[1].length === 2 ? {