refactor(functions): migrate Functions to HTTPRuntime

Package.swift

@@ -54,6 +54,29 @@ let package = Package(
         "Helpers",
       ]
     ),
+    .target(
+      name: "HTTPRuntime"
+    ),
+    .testTarget(
+      name: "HTTPRuntimeTests",
+      dependencies: [
+        "HTTPRuntime"
+      ]
+    ),
+    .target(
+      name: "HTTPRuntimeTestHelpers",
+      dependencies: [
+        "HTTPRuntime",
+        .product(name: "InlineSnapshotTesting", package: "swift-snapshot-testing"),
+      ]
+    ),
+    .testTarget(
+      name: "HTTPRuntimeTestHelpersTests",
+      dependencies: [
+        "HTTPRuntime",
+        "HTTPRuntimeTestHelpers",
+      ]
+    ),
     .target(
       name: "Auth",
       dependencies: [
@@ -84,8 +107,8 @@ let package = Package(
       name: "Functions",
       dependencies: [
         .product(name: "ConcurrencyExtras", package: "swift-concurrency-extras"),
-        .product(name: "HTTPTypes", package: "swift-http-types"),
         "Helpers",
+        "HTTPRuntime",
       ]
     ),
     .testTarget(
@@ -247,7 +270,9 @@ let package = Package(
 // Test targets migrated to Swift Testing get full Swift 6 checking, same as
 // production targets. Everything else stays pinned to v5 until its migration
 // phase lands (see SDK-435).
-let swift6TestTargets: Set<String> = ["SupabaseTests", "HelpersTests"]
+let swift6TestTargets: Set<String> = [
+  "SupabaseTests", "HelpersTests", "HTTPRuntimeTests", "HTTPRuntimeTestHelpersTests",
+]
 
 for target in package.targets {
   // Test targets never opted into `ExistentialAny` below, so bumping swift-tools-version

Sources/Functions/Deprecated.swift

@@ -0,0 +1,67 @@
+//
+//  Deprecated.swift
+//  Functions
+//
+//  Created by Guilherme Souza on 13/07/26.
+//
+public import Foundation
+public import Helpers
+
+extension FunctionsClient {
+
+  /// Creates a new Functions client.
+  /// - Parameters:
+  ///   - url: The base URL of the Functions endpoint.
+  ///   - headers: Additional headers to include in every request.
+  ///   - region: The region string to invoke functions in.
+  ///   - logger: A logger for request and response diagnostics.
+  ///   - fetch: A custom fetch handler. Defaults to `URLSession.shared`.
+  ///   - decoder: The JSON decoder used to decode response bodies.
+  @_disfavoredOverload
+  @available(
+    *, deprecated, message: "Use init(url:options:) with a FunctionsClientOptions instead."
+  )
+  public convenience init(
+    url: URL,
+    headers: [String: String] = [:],
+    region: String? = nil,
+    logger: (any SupabaseLogger)? = nil,
+    fetch: @escaping FetchHandler = { try await URLSession.shared.data(for: $0) },
+    decoder: JSONDecoder = JSONDecoder()
+  ) {
+    self.init(
+      url: url,
+      options: FunctionsClientOptions(
+        headers: headers, region: region, logger: logger, decoder: decoder, session: .shared),
+      transport: FetchHandlerTransport(fetch: fetch)
+    )
+  }
+
+  /// Creates a new Functions client.
+  /// - Parameters:
+  ///   - url: The base URL of the Functions endpoint.
+  ///   - headers: Additional headers to include in every request.
+  ///   - region: The region to invoke functions in.
+  ///   - logger: A logger for request and response diagnostics.
+  ///   - fetch: A custom fetch handler. Defaults to `URLSession.shared`.
+  ///   - decoder: The JSON decoder used to decode response bodies.
+  @available(
+    *, deprecated, message: "Use init(url:options:) with a FunctionsClientOptions instead."
+  )
+  public convenience init(
+    url: URL,
+    headers: [String: String] = [:],
+    region: FunctionRegion? = nil,
+    logger: (any SupabaseLogger)? = nil,
+    fetch: @escaping FetchHandler = { try await URLSession.shared.data(for: $0) },
+    decoder: JSONDecoder = JSONDecoder()
+  ) {
+    self.init(
+      url: url,
+      options: FunctionsClientOptions(
+        headers: headers, region: region?.rawValue, logger: logger, decoder: decoder,
+        session: .shared),
+      transport: FetchHandlerTransport(fetch: fetch)
+    )
+  }
+}