_runtime(multithreaded) is only available in Swift 6.0 and later

kateinoigakukun · kateinoigakukun · commit a0c460260757 · 2024-06-27T15:32:47.000+09:00
diff --git a/Sources/JavaScriptEventLoop/JavaScriptEventLoop.swift b/Sources/JavaScriptEventLoop/JavaScriptEventLoop.swift
@@ -61,7 +61,7 @@ public final class JavaScriptEventLoop: SerialExecutor, @unchecked Sendable {
         return _shared
     }
 
-    #if _runtime(_multithreaded)
+    #if compiler(>=6.0) && _runtime(_multithreaded)
     // In multi-threaded environment, we have an event loop executor per
     // thread (per Web Worker). A job enqueued in one thread should be
     // executed in the same thread under this global executor.

Original file line number	Diff line number	Diff line change
`@@ -61,7 +61,7 @@ public final class JavaScriptEventLoop: SerialExecutor, @unchecked Sendable {`
`61`	`61`	`return _shared`
`62`	`62`	`}`
`63`	`63`
`64`		`- #if _runtime(_multithreaded)`
	`64`	`+ #if compiler(>=6.0) && _runtime(_multithreaded)`
`65`	`65`	`// In multi-threaded environment, we have an event loop executor per`
`66`	`66`	`// thread (per Web Worker). A job enqueued in one thread should be`
`67`	`67`	`// executed in the same thread under this global executor.`