Filter which providers should be available to users

wporg-two-factor.php

@@ -12,3 +12,18 @@
 namespace WordPressdotorg\Two_Factor;
 defined( 'WPINC' ) || die();
 
+add_filter( 'two_factor_providers', __NAMESPACE__ . '\two_factor_providers' );
+
+/**
+ * Determine which providers should be available to users.
+ */
+function two_factor_providers( array $providers ) : array {
+	// Match the name => file path format of input var, but the path isn't needed.
+	$desired_providers = array(
+		'Two_Factor_WebAuthn'     => '',
+		'Two_Factor_Totp'         => '',
+		'Two_Factor_Backup_Codes' => '',
+	);
+
+	return array_intersect_key( $providers, $desired_providers );
+}