feat: More cli client tests and documentation.

Sources/CliClient/CliClient.swift

@@ -34,12 +34,23 @@ public struct CliClient {
 
   /// Represents the parameters needed to create an `MQTTClient`.
   ///
-  ///
   public struct ClientRequest: Sendable {
+
+    /// The environment variables used to create the client.
     public let environment: EnvVars
+
+    /// The event loop group for the client.
     public let eventLoopGroup: MultiThreadedEventLoopGroup
+
+    /// A logger to use with the client.
     public let logger: Logger?
 
+    /// Create a new client request.
+    ///
+    /// - Parameters:
+    ///   - environment: The environment variables to use.
+    ///   - eventLoopGroup: The event loop group to use on the client.
+    ///   - logger: An optional logger to use on the client.
     public init(
       environment: EnvVars,
       eventLoopGroup: MultiThreadedEventLoopGroup,
@@ -122,11 +133,10 @@ extension EnvVars {
     @Dependency(\.environment) var environment
 
     let defaultEnvVars = EnvVars()
-    let encoder = environment.jsonEncoder()
-    let decoder = environment.jsonDecoder()
+    let coders = environment.coders()
 
-    let defaultEnvDict = (try? encoder.encode(defaultEnvVars))
-      .flatMap { try? decoder.decode([String: String].self, from: $0) }
+    let defaultEnvDict = (try? coders.encode(defaultEnvVars))
+      .flatMap { try? coders.decode([String: String].self, from: $0) }
       ?? [:]
 
     let dotEnvDict = try await environment.dotEnvDict(path: dotEnvFile)
@@ -135,7 +145,7 @@ extension EnvVars {
       .merging(dotEnvDict, uniquingKeysWith: { $1 })
 
     var envVars = (try? JSONSerialization.data(withJSONObject: envVarsDict))
-      .flatMap { try? decoder.decode(EnvVars.self, from: $0) }
+      .flatMap { try? coders.decode(EnvVars.self, from: $0) }
       ?? defaultEnvVars
 
     if let version {
@@ -162,7 +172,7 @@ public extension MQTTClient {
       eventLoopGroupProvider: .shared(eventLoopGroup),
       logger: logger,
       configuration: .init(
-        version: .parseOrDefualt(string: envVars.version),
+        version: .parseOrDefault(string: envVars.version),
         disablePing: false,
         userName: envVars.userName,
         password: envVars.password
@@ -171,10 +181,11 @@ public extension MQTTClient {
   }
 }
 
-extension MQTTClient.Version {
+@_spi(Internal)
+public extension MQTTClient.Version {
   static let `default` = Self.v3_1_1
 
-  static func parseOrDefualt(string: String?) -> Self {
+  static func parseOrDefault(string: String?) -> Self {
     guard let string, let value = Self(string: string) else {
       return .default
     }