From 379ff5c35c7578aed1ff2b78263ab3c2dd2f4873 Mon Sep 17 00:00:00 2001
From: Matthew Miller <matthew@millerti.me>
Date: Mon, 20 Jun 2022 10:54:16 -0700
Subject: Attempt to cast PublicKeyCredential for new method

---
 packages/typescript-types/src/index.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'packages/typescript-types')

diff --git a/packages/typescript-types/src/index.ts b/packages/typescript-types/src/index.ts
index b4bafc0..b0c8d2c 100644
--- a/packages/typescript-types/src/index.ts
+++ b/packages/typescript-types/src/index.ts
@@ -163,6 +163,14 @@ export interface PublicKeyCredentialDescriptorFuture extends Omit<PublicKeyCrede
   transports?: AuthenticatorTransportFuture[];
 }
 
+/**
+ * A super class of TypeScript's `PublicKeyCredential` that knows about upcoming WebAuthn methods
+ */
+export interface PublicKeyCredentialFuture extends PublicKeyCredential {
+  // See https://github.com/w3c/webauthn/issues/1745
+  isConditionalMediationAvailable(): Promise<boolean>;
+}
+
 /**
  * The two types of credentials as defined by bit 3 ("Backup Eligibility") in authenticator data:
  * - `"singleDevice"` credentials will never be backed up
-- 
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