UniTask/src/UniTask/Assets/Scenes/EditorTest1.cs

#if UNITY_EDITOR

using System;
using Cysharp.Threading.Tasks;
using UnityEditor;
using UnityEngine;

public class Test1
{
    [MenuItem("Test/Test1")]
    public static async UniTaskVoid TestFunc()
    {
        await DoSomeThing();
        string[] scenes = new string[]
        {
            "Assets/Scenes/SandboxMain.unity",
        };

        try
        {
            Debug.Log("Build Begin");
            BuildPipeline.BuildPlayer(scenes, Application.dataPath + "../target", BuildTarget.StandaloneWindows, BuildOptions.CompressWithLz4);
            Debug.Log("Build After");
        }
        catch (Exception e)
        {
            Debug.LogError(e.Message);
        }
    }

    public static async UniTask DoSomeThing()
    {
        Debug.Log("Dosomething");
        await UniTask.Delay(1500, DelayType.Realtime);
        Debug.Log("Dosomething 2");
        await UniTask.Delay(1000, DelayType.Realtime);
        Debug.Log("Dosomething 3");
    }
}

#endif