Add Swift 6.2 manifest and trait opt-out

Author: kateinoigakukun

Makefile

@@ -11,8 +11,13 @@ unittest:
 		echo "SWIFT_SDK_ID is not set. Run 'swift sdk list' and pass a matching SDK, e.g. 'make unittest SWIFT_SDK_ID=<id>'."; \
 		exit 2; \
 	}
+ifeq ($(JAVASCRIPTKIT_DISABLE_TRACING_TRAIT),1)
+	TRACING_ARGS :=
+else
+	TRACING_ARGS := --traits Tracing
+endif
 	env JAVASCRIPTKIT_EXPERIMENTAL_BRIDGEJS=1 swift package --swift-sdk "$(SWIFT_SDK_ID)" \
-	    --traits Tracing \
+	    $(TRACING_ARGS) \
 	    --disable-sandbox \
 	    js test --prelude ./Tests/prelude.mjs -Xnode --expose-gc
 

Package.swift

@@ -7,12 +7,7 @@ import PackageDescription
 let shouldBuildForEmbedded = Context.environment["JAVASCRIPTKIT_EXPERIMENTAL_EMBEDDED_WASM"].flatMap(Bool.init) ?? false
 let useLegacyResourceBundling =
     Context.environment["JAVASCRIPTKIT_USE_LEGACY_RESOURCE_BUNDLING"].flatMap(Bool.init) ?? false
-
-let tracingTrait = Trait(
-    name: "Tracing",
-    description: "Enable opt-in Swift <-> JavaScript bridge tracing hooks.",
-    enabledTraits: []
-)
+let enableTracingByEnv = Context.environment["JAVASCRIPTKIT_ENABLE_TRACING"].flatMap(Bool.init) ?? false
 
 let testingLinkerFlags: [LinkerSetting] = [
     .unsafeFlags([
@@ -42,7 +37,6 @@ let package = Package(
         .plugin(name: "BridgeJS", targets: ["BridgeJS"]),
         .plugin(name: "BridgeJSCommandPlugin", targets: ["BridgeJSCommandPlugin"]),
     ],
-    traits: [tracingTrait],
     dependencies: [
         .package(url: "https://github.com/swiftlang/swift-syntax", "600.0.0"..<"603.0.0")
     ],
@@ -59,6 +53,7 @@ let package = Package(
             swiftSettings: [
                 .enableExperimentalFeature("Extern")
             ]
+                + (enableTracingByEnv ? [.define("Tracing")] : [])
                 + (shouldBuildForEmbedded
                     ? [
                         .enableExperimentalFeature("Embedded"),
@@ -79,7 +74,7 @@ let package = Package(
             dependencies: ["JavaScriptKit"],
             swiftSettings: [
                 .enableExperimentalFeature("Extern")
-            ],
+            ] + (enableTracingByEnv ? [.define("Tracing")] : []),
             linkerSettings: testingLinkerFlags
         ),