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<!--info-header-start--><h1>Integer </h1><blockquote><p>by HuaBing <a href="https://github.com/hbcraft" target="_blank">@hbcraft</a></p></blockquote><p><a href="https://tsch.js.org/10969/play" target="_blank"></a> &nbsp;&nbsp;&nbsp;<a href="./README.zh-CN.md" target="_blank"></a> </p><!--info-header-end-->

Please complete type Integer<T>, type T inherits from number, if T is an integer return it, otherwise return never.

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