Testing for passkey support

Most devices and browsers now support passkeys, albeit with a few quirks. Nevertheless, don’t assume support is universal.

isPasskeySupport

Before prompting the user to register or authenticate with a passkey you should call isPasskeySupport().

frontend/register.ts

import { isPasskeySupport } from "@passlock/client";

if (!isPasskeySupport()) {
  throw new Error("Bad news...")
}

PasskeyUnsupported error

Alternatively test for the PasskeyUnsupported error:

frontend/register.ts

import {
  registerPasskey,
  isRegistrationSuccess,
  isPasskeyUnsupported
} from "@passlock/client";

const result = await registerPasskey({ ... })

if (isRegistrationSuccess(result)) {
  // happy days
} else if (isPasskeyUnsupported(result)) {
  // no passkey support on this device
} else { ... }