make callback optional

6 years ago · 3c1734c1fc
parent fb534a3d50
commit 3c1734c1fc
1 changed files with 1 additions and 1 deletions
--- a/src/internal/scheduler.js
+++ b/src/internal/scheduler.js
@ -19,7 +19,7 @@ export function add_render_callback(fn) {
 }
 export function nextTick(fn) {
-	add_render_callback(fn);
+	if (fn) add_render_callback(fn);
 	schedule_update();
 	return update_promise;
 }