Webpack plugin adds multiple copies of runtime and common chunks

[denis-sokolov]

When I have multiple <script type="module"> in my HTML, Webpack runtime and common chunks are inlcuded multiple times. It works well in development mode and in production mode without Webpack plugin.

index.html:

<script type="module" src="/foo.ts"></script>
<script type="module" src="/bar.ts"></script>

Output in production mode with Webpack plugin:

<script src="/js/webpack-runtime.98c67bcc4b0110595ecf.js"></script>
<script src="/js/commons.4064fce15ab609e33252.js"></script>
<script src="/js/foo.4967172da949f1357dad.js"></script>
<script src="/js/webpack-runtime.98c67bcc4b0110595ecf.js"></script>
<script src="/js/commons.4064fce15ab609e33252.js"></script>
<script src="/js/bar.1979f3feb1820fe3b1ec.js"></script>

I believe this code is responsible:

https://github.com/snowpackjs/snowpack/blob/282ccf3c413712d3802226ffb298ec42fdec4d48/plugins/plugin-webpack/plugin.js#L57-L75

[denis-sokolov]

This is present in the latest 3.0.11.