From bfe3eec6e3fa6a828fa37a5aca29c14271bec778 Mon Sep 17 00:00:00 2001
From: eternal-flame-AD <yume@yumechi.jp>
Date: Tue, 3 Sep 2024 00:37:58 -0500
Subject: [PATCH] require url when only format is specified

Signed-off-by: eternal-flame-AD <yume@yumechi.jp>
---
 js/igv.d.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/js/igv.d.ts b/js/igv.d.ts
index 0eb015065..48b18b355 100644
--- a/js/igv.d.ts
+++ b/js/igv.d.ts
@@ -45,7 +45,8 @@ export type TypeFormatPair<T extends TrackType> = {
     type?: T;
     // if we know the format, type is not required
     format: TrackFormatOf<T>;
-    url?: string;
+    // in this case URL can be anything
+    url: Deferrable<string>;
 } | {
     type?: T;
     format?: TrackFormatOf<T>;