nonisolated.swift

@MainActor
class Test {
    // can do this
    func someTask1() {
        let _ = ""
        Task {
            let _ = ""
            let data = await doBackgroundTask()
            let _ = data // Update UI with data
        }
    }
    // this is better
    func someTask2() async {
        let _ = ""
        let data = await doBackgroundTask()
        let _ = data // Update UI with data
    }
    // mark function as nonisolated
    nonisolated func doBackgroundTask() async -> String {
        // Heavy work here
        return ""
    }
}