Add comment about how the main file is a script not a module.

webcomponents · Jan 31, 2024 · 4b1b73f · 4b1b73f
1 parent af7d389
commit 4b1b73f
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/packages/scoped-custom-element-registry/src/scoped-custom-element-registry.ts b/packages/scoped-custom-element-registry/src/scoped-custom-element-registry.ts
@@ -12,6 +12,13 @@
  * http://polymer.github.io/PATENTS.txt
  */
 
+/**
+ * Note: this file is a script, not a module, so toplevel
+ * interfaces are global. This is relevent because those named
+ * after existing global TypeScript types actually add to those
+ * types, as though they were declared in a `declare global` in a module.
+ */
+
 interface CustomElementConstructor {
   observedAttributes?: Array<string>;
   formAssociated?: boolean;