From f49a65b2ec8f66291a01b52f47ccd162e835efc2 Mon Sep 17 00:00:00 2001
From: Alexander Wang <alex@terrastruct.com>
Date: Mon, 25 Sep 2023 11:29:33 -0700
Subject: [PATCH] invoke callback if defined

---
 d2js/js.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/d2js/js.go b/d2js/js.go
index 0f64cc9509..a846c6ab8c 100644
--- a/d2js/js.go
+++ b/d2js/js.go
@@ -26,6 +26,10 @@ func main() {
 	js.Global().Set("d2Parse", js.FuncOf(jsParse))
 	js.Global().Set("d2Encode", js.FuncOf(jsEncode))
 	js.Global().Set("d2Decode", js.FuncOf(jsDecode))
+	initCallback := js.Global().Get("onWasmInitialized")
+	if !initCallback.IsUndefined() {
+		initCallback.Invoke()
+	}
 	select {}
 }