版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/transducers.js/0.3.2/transducers.js
- https://cdn.bootcdn.net/ajax/libs/transducers.js/0.3.2/transducers.min.js
- https://cdn.bootcdn.net/ajax/libs/transducers.js/0.3.2/transducers.min.js.map