Project: Update findFolder to return null when no folder is found

Author: runegan

lib/modules/project.js

@@ -43,21 +43,23 @@ aeq.project = aeq.extend({}, {
 	},
 
 	/**
-	 * Find folder by name in target folder, or root
+	 * Find folder by name in target folder.
 	 * @method
 	 * @memberof aeq.project
-	 * @param  {string} name                                       Folder name to find
-	 * @param  {FolderItem|string} [parentFolder=app.project.root] Folder to search in by name or item, or root if undefined
-	 * @return {FolderItem}                                        ArrayEx of folder items
+	 * @param  {string} name                                       Folder name to find.
+	 * @param  {FolderItem|string} [parentFolder=app.project.root] Folder to search in by name or item, or root if undefined.
+	 * @return {FolderItem|null}                                   FolderItem with the name. Or `null` if not found.
 	 */
 	findFolder: function(name, parentFolder){
 		var folders = aeq.project.getFolders(parentFolder);
 
 		var folder = aeq.filter(folders, function(folder) {
 			return folder.name == name;
 		});
-
-		return folder[0];
+		if (folder.length) {
+			return folder[0];
+		}
+		return null;
 	},
 
 	/**
@@ -69,11 +71,13 @@ aeq.project = aeq.extend({}, {
 	 * @return {FolderItem|null}                                   Target folder item, or null
 	 */
 	getFolder: function(folder, parentFolder){
-		if (aeq.isFolderItem(folder))
+		if (aeq.isFolderItem(folder)) {
 			return folder;
+		}
 
-		if (aeq.isString(folder))
+		if (aeq.isString(folder)) {
 			return aeq.project.findFolder(folder, parentFolder);
+		}
 
 		return null;
 	},