it is a single parser file that parses the Xmind file into a clean json. I have been using Xmind for a whole year, and I am a paid account. However, this software is known for its closed environment. And I found https://Xmind.work, disallow chinese accounts to log-in. I have to find an alternative software to replace it to provide better cloud services and looser policies for chinese users.
$ path/to/QXmindParser.exe path/to/your_xmind_file.xmind