we need to initialize plugins as empty array

[salmin89]

else you get this error:

error during build:
Build failed with 1 error:

[plugin crx:manifest-post] /@crx/manifest
TypeError: plugins is not iterable

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Name	Status	Preview	Comments	Updated (UTC)
vite-plugin-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 8, 2025 1:38pm

[salmin89]

if you want to test rolldown in the playground, take react for example and update vite to:

 "vite": "npm:rolldown-vite@latest",

and @vitejs/plugin-react to @vitejs/plugin-react-oxc

--- "@vitejs/plugin-react": "^4.3.4",
+++ "@vitejs/plugin-react-oxc": "^0.2.3",

[FliPPeDround]

I added rolldown-react under the playgrounds folder. After testing, when running build, the content script was not injected into the page as expected.

[salmin89]

I added rolldown-react under the playgrounds folder. After testing, when running build, the content script was not injected into the page as expected.

looks like the plugins are not being detected in build mode.
options.plugins is undefined

buildStart(options) {
    if (options.plugins) crxPlugins = options.plugins as CrxPlugin[]
}

[FliPPeDround]

I added rolldown-react under the playgrounds folder. After testing, when running build, the content script was not injected into the page as expected.

looks like the plugins are not being detected in build mode. options.plugins is undefined

buildStart(options) {
    if (options.plugins) crxPlugins = options.plugins as CrxPlugin[]
}

Yes, in rolldown-vite, the parameters in buildStart are not entirely identical to those in Vite. I'm currently unsure whether rolldown-vite doesn't support crxjs's syntax or if this is a bug in rolldown-vite.

[salmin89]

I think we can grab the plugins from this hook:

configResolved(config) {
        if (config.plugins) plugins = config.plugins as CrxPlugin[]
},

but even with that in place I'm still getting some errors when building. Same error for building vite6 and vite7 though. I think it might be related to the vite version miss-match in the repo

[crx:web-accessible-resources] TypeError: OutputBundle["manifest.json"] is undefined.

[salmin89]

upgrading vite-plugin to at least 6 - and silencing some type errors solved the problems, and I managed to get play-rolldown-react to build. I'll push a commit to this PR just for educational purposes

[salmin89]

@FliPPeDround just pushed the fixes. buildStart still resolves plugins incase you need to build older vite versions.