The plugin fails to work in Vite@3

[dylanzbot]

Describe the bug

In the development environment of Vite@2, after the plugin is executed, <script type="importmap"> is at the top of the head tag, and /@vite/client is below it, this is no problem; but in the development environment of Vite@3, because Vite adjusted the injection rules of the plugin execution result(applyHtmlTransforms function), <script type="importmap"> was under /@vite/client, and the browser could not parse the import maps.

在Vite@2的开发环境中，插件执行完后在head标签中<script type="importmap">位于最顶部，/@vite/client在它下面，这个没有问题；但是在Vite@3的开发环境中，由于Vite调整了插件执行结果的注入规则（applyHtmlTransforms函数），导致<script type="importmap">在/@vite/client下面，浏览器就无法解析 Import maps 了。

System Info

Vite 3.0.8

Personal solution

enforce: 'post', // or delete it

I tested it, it works.