Merge pull request #1318 from glimmerjs/bugfix/ensure-hash-works-with…

…-custom-tags Ensure hash works with custom tags
glimmerjs · May 27, 2021 · b9036f3 · b9036f3
2 parents 3a70a19 + ed371df
commit b9036f3
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/packages/@glimmer/runtime/lib/helpers/hash.ts b/packages/@glimmer/runtime/lib/helpers/hash.ts
@@ -6,8 +6,12 @@ import { combine, Tag, tagFor, track } from '@glimmer/validator';
 import { deprecate } from '@glimmer/global-context';
 import { internalHelper } from './internal-helper';
 
-function tagForKey(hash: CapturedNamedArguments, key: string): Tag {
-  return track(() => valueForRef(hash[key]));
+function tagForKey(namedArgs: CapturedNamedArguments, key: string): Tag {
+  return track(() => {
+    if (key in namedArgs) {
+      valueForRef(namedArgs[key]);
+    }
+  });
 }
 
 let hashProxyFor: (args: CapturedNamedArguments) => Record<string, unknown>;