Don't require that there are listeners, to support unit tests, see ph…

…etsims/tambo#126
phetsims · Jan 26, 2021 · 79d751a · 79d751a
1 parent 35f2dad
commit 79d751a
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/js/asyncLoader.js b/js/asyncLoader.js
@@ -40,7 +40,6 @@ class AsyncLoader {
   proceedIfReady() {
     if ( this.pendingLocks.length === 0 ) {
       assert && assert( !this.loadComplete, 'cannot complete load twice' );
-      assert && assert( this.listeners.length > 0, 'async requires at least one listener' );
       this.loadComplete = true;
 
       this.listeners.forEach( listener => listener() );