From b9134fe03a5ab624c27e8edb9a8d26acbaba9e3b Mon Sep 17 00:00:00 2001
From: Simon Elvery <simon@elvery.net>
Date: Wed, 2 Dec 2020 14:57:46 +1000
Subject: [PATCH] Add whenOdysseyLoaded promise

---
 src/index.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/index.ts b/src/index.ts
index a2c131a..d698dce 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -57,6 +57,9 @@ declare global {
     [PresentationLayerCustomEvents.DA]: CustomEvent<DecoyEventDetail>;
     [PresentationLayerCustomEvents.DI]: CustomEvent<DecoyEventDetail>;
   }
+  interface Window {
+    __ODYSSEY__?: unknown;
+  }
 }
 
 // Shared constants & functions
@@ -170,6 +173,13 @@ export const whenDOMReady: Promise<void> = new Promise(resolve =>
   })()
 );
 
+// Allow us to check for when Odyssey is loaded
+export const whenOdysseyLoaded = new Promise(resolve => {
+  window.__ODYSSEY__
+    ? resolve(window.__ODYSSEY__)
+    : window.addEventListener('odyssey:api', () => resolve(window.__ODYSSEY__));
+});
+
 // Listen for PL decoy deactivations and revoke previously granted DOM permits
 function bindGlobalRevocationHandler() {
   window.addEventListener(PresentationLayerCustomEvents.DI, ({ detail }) => {