How to change the element plus class namespace

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I looked at the element-plus docs, I try the office guide.

But it didn't work, and neither did it when I tried to import the index.scss file manually

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I found the export file (dist/contentScripts/style.css), namespace is el startwith

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src/styles/element/index.scss

$--colors: (
        "primary": (
                "base": #9B55FD,
        ),
        "success": (
                "base": #1dc779,
        ),
        "warning": (
                "base": #ffb302,
        ),
        "danger": (
                "base": #e26237,
        ),
        "error": (
                "base": #cf4444,
        ),
        "info": (
                "base": #42b8dd,
        ),
);

// we can add this to custom namespace, default is 'el'
@forward "element-plus/theme-chalk/src/mixins/config.scss" with (
  $namespace: "ec"
);

// You should use them in scss, because we calculate it by sass.
// comment next lines to use default color
@forward "element-plus/theme-chalk/src/common/var.scss" with (
  // do not use same name, it will override.
  $colors: $--colors,
);

// if you want to import all
// @use "element-plus/theme-chalk/src/index.scss" as *;

// You can comment it to hide debug info.
// @debug $--colors;

// custom dark variables
@use "./dark.scss";

src/styles/element/dark.scss

// only scss variables

$--colors: (
        "primary": (
                "base": #9B55FD,
        ),
);

@forward "element-plus/theme-chalk/src/dark/var.scss" with (
  $colors: $--colors
);

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src/styles/index.ts

import '@unocss/reset/normalize.css'
import 'uno.css'
import 'element-plus/dist/index.css'
// manual import
import './element/index.scss'

import './scrollbar.css'

I tried this code, and it didn't work

// vite.config.ts
css: {
  preprocessorOptions: {
    scss: {
      additionalData: `@use "~/styles/element/index.scss" as *;`,
    },
  },}

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I found that all the element plus component class prefixes are customized by me, but the stylesheet is not a custom prefix, it is an el prefix

<el-config-provider namespace="ec">
// some code
</el-config-provider >

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My contentScript code

// mount component to context window
const container = document.createElement('div')
container.id = __NAME__
const root = document.createElement('div')
const styleEl = document.createElement('link')
const shadowDOM = container.attachShadow?.({ mode: __DEV__ ? 'open' : 'closed' }) || container
styleEl.setAttribute('rel', 'stylesheet')
styleEl.setAttribute('href', browser.runtime.getURL('dist/contentScripts/style.css'))
shadowDOM.appendChild(styleEl)
shadowDOM.appendChild(root)
document.body.appendChild(container)
const app = createApp(DrawerApp)
setupApp(app)
app.mount(root)

[_island]

mini repo : https://github.com/QC2168/webext-ele-import-bug

[_island]

Solved!

[Tmk]

can you share your solution to help others?