@vitejs/plugin-legacy support only output legacy bundle

[xiaoxiangmoe]

Description

In vue-cli v5, vue-cli-service build --no-module will only output the legacy bundles that support all target browsers (loaded via plain <script>s). See Vue CLI --no-module

But @vitejs/plugin-legacy will output both modern and legacy codes.

Suggested solution

Can we add --no-module config in vite-plugin-legacy?

Alternative

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[github-actions]

Hello @xiaoxiangmoe. We like your proposal/feedback and would appreciate a contribution via a Pull Request by you or another community member. We thank you in advance for your contribution and are looking forward to reviewing it!

[sangquangnguyen]

Hi @xiaoxiangmoe , could you try this feature? I used
legacy({ renderModernChunks: false }) then I will get the entry point is index-legacy-123456.js in manifest.json, but when I used it, I will encounter the issue System is not defined, do you know this issue?
<script type="module" src="base_url/index-legacy-123456.js" />

[patak-dev]

@sangquangnguyen would you create a new issue with a minimal reproduction linking to the issue and PR? Thanks!

[sangquangnguyen]

@sangquangnguyen would you create a new issue with a minimal reproduction linking to the issue and PR? Thanks!

Ah, sorry for bothering you 😅 , I just want to have a quick check whether the author of this issue encountered another issue like me or this function works well on their end. I might have some wrong configs, let me do more investigations and create a ticket with the details if needed, thanks @patak-dev for your time ❤️

[sangquangnguyen]

I found out the reason, I saw in manifest.json we have vite/legacy-polyfills-legacy file, we have to include this polyfill-legacy file into the script before the entry point to load all necessary polyfills. Thanks everyone 🚀