Add sendable checking

Author: 0xTim

Package.swift

@@ -37,10 +37,15 @@ let package = Package(
                 .product(name: "Crypto", package: "swift-crypto"),
                 .product(name: "_CryptoExtras", package: "swift-crypto"),
                 .product(name: "Logging", package: "swift-log"),
-            ]
+            ],
+            swiftSettings: [.enableExperimentalFeature("StrictConcurrency=complete")]
         ),
-        .testTarget(name: "WebAuthnTests", dependencies: [
-            .target(name: "WebAuthn")
-        ])
+        .testTarget(
+            name: "WebAuthnTests",
+            dependencies: [
+                .target(name: "WebAuthn")
+            ],
+            swiftSettings: [.enableExperimentalFeature("StrictConcurrency=complete")]
+        )
     ]
 )

Sources/WebAuthn/Ceremonies/Shared/AuthenticatorAttachment.swift

@@ -18,7 +18,7 @@
 /// - SeeAlso: [WebAuthn Level 3 Editor's Draft §5.4.5. Authenticator Attachment Enumeration (enum AuthenticatorAttachment)](https://w3c.github.io/webauthn/#enum-attachment)
 /// - SeeAlso: [WebAuthn Level 3 Editor's Draft §6.2.1. Authenticator Attachment Modality](https://w3c.github.io/webauthn/#sctn-authenticator-attachment-modality)
 ///
-public struct AuthenticatorAttachment: UnreferencedStringEnumeration {
+public struct AuthenticatorAttachment: UnreferencedStringEnumeration, Sendable {
     public var rawValue: String
     public init(_ rawValue: String) {
         self.rawValue = rawValue

Sources/WebAuthn/Ceremonies/Shared/CredentialType.swift

@@ -17,7 +17,7 @@
 /// Only ``CredentialType/publicKey`` is supported by WebAuthn.
 /// - SeeAlso: [Credential Management Level 1 Editor's Draft §2.1.2. Credential Type Registry](https://w3c.github.io/webappsec-credential-management/#sctn-cred-type-registry)
 /// - SeeAlso: [WebAuthn Level 3 Editor's Draft §5.1. PublicKeyCredential Interface](https://w3c.github.io/webauthn/#iface-pkcredential)
-public struct CredentialType: UnreferencedStringEnumeration {
+public struct CredentialType: UnreferencedStringEnumeration, Sendable {
     public var rawValue: String
     public init(_ rawValue: String) {
         self.rawValue = rawValue