1 files changed, 19 insertions, 0 deletions
diff --git a/packages/browser/src/helpers/browserSupportsWebAuthnAutofill.ts b/packages/browser/src/helpers/browserSupportsWebAuthnAutofill.ts
new file mode 100644
index 0000000..d0a5ca6
--- /dev/null
+++ b/packages/browser/src/helpers/browserSupportsWebAuthnAutofill.ts
@@ -0,0 +1,19 @@
+/* eslint-disable @typescript-eslint/ban-ts-comment */
+/**
+ * Determine if the browser supports conditional UI, so that WebAuthn credentials can
+ * be shown to the user in the browser's typical password autofill popup.
+ */
+export async function browserSupportsWebAuthnAutofill(): Promise<boolean> {
+  // Just for Chrome Canary right now; the PublicKeyCredential logic below is the real API
+  // @ts-ignore
+  if (navigator.credentials.conditionalMediationSupported) {
+    return true;
+  }
+
+  return (
+    // @ts-ignore
+    PublicKeyCredential.isConditionalMediationAvailable
+    // @ts-ignore
+    && PublicKeyCredential.isConditionalMediationAvailable()
+  );
+}