Unity editor script to remove all empty folders from a project. Ideal for cleaning to upload on git repositories

EditorRemoveEmptyFolders.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
using System.IO;

public class EditorRemoveEmptyFolders {

	[MenuItem("Project Tools/Maintenance/Remove Empty Folders")]
	public static void RemoveEmptyFolders()
	{
		var path = Application.dataPath;
		List<string> dirsToRemove = new List<string>();
		FindDirectoriesToRemove(path, dirsToRemove);

		dirsToRemove.Reverse();
		foreach (string dir in dirsToRemove) {
			if (Directory.Exists(dir)) {
				Debug.Log("<color=red>Deleting: " + dir + "</color>");
				Directory.Delete(dir, true);
				if (File.Exists(dir + ".meta")) {
					File.Delete(dir + ".meta");
				}
			}
		}
	}


	static bool FindDirectoriesToRemove(string path, List<string> dirList)
	{
		bool hasOnlyMetas = true;

		List<string> metaExtensions = new List<string>();
		metaExtensions.Add(".meta");
		metaExtensions.Add(".ds_store");

		foreach (var file in Directory.GetFiles(path)) {
			var ext = Path.GetExtension(file).ToLower();
			hasOnlyMetas = hasOnlyMetas && metaExtensions.Contains(ext);
			if (!hasOnlyMetas) {
				break;
			}
		}

		var allSubdirsHasOnlyMetas = true;
		foreach (var directory in Directory.GetDirectories(path)) {
			var subdirHasOnlyMetas = FindDirectoriesToRemove(directory, dirList);
			allSubdirsHasOnlyMetas = allSubdirsHasOnlyMetas && subdirHasOnlyMetas;
		}

		var result = hasOnlyMetas && allSubdirsHasOnlyMetas;
		if (result) {
			dirList.Add(path);
		}

		return result;
	}
}