Screen-related work for phetsims/joist#827

phetsims · Aug 3, 2022 · fd1f75e · fd1f75e
1 parent 15dabe4
commit fd1f75e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/js/isArray.js → js/isArray.ts b/js/isArray.js → js/isArray.ts
@@ -7,8 +7,9 @@
  */
 
 import phetCore from './phetCore.js';
+import IntentionalAny from './types/IntentionalAny.js';
 
-function isArray( array ) {
+function isArray( array: IntentionalAny ): array is IntentionalAny[] {
   // yes, this is actually how to do this. see http://stackoverflow.com/questions/4775722/javascript-check-if-object-is-array
   return Object.prototype.toString.call( array ) === '[object Array]';
 }