From 7ea02c8ab1e7846430beed508a8fe144cf0978ec Mon Sep 17 00:00:00 2001
From: Chris Kerr <chriskerr@me.com>
Date: Thu, 22 Dec 2022 15:35:19 +1000
Subject: [PATCH] update onmount typing to prevent async function return

---
 src/runtime/internal/lifecycle.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/runtime/internal/lifecycle.ts b/src/runtime/internal/lifecycle.ts
index e75bbdc501..9717509190 100644
--- a/src/runtime/internal/lifecycle.ts
+++ b/src/runtime/internal/lifecycle.ts
@@ -31,7 +31,7 @@ export function beforeUpdate(fn: () => any) {
  * 
  * https://svelte.dev/docs#run-time-svelte-onmount
  */
-export function onMount(fn: () => any) {
+export function onMount(fn: (() => () => void) | (() => void | Promise<void>)) {
 	get_current_component().$$.on_mount.push(fn);
 }