# Source: https://rsbuild.dev/plugins/list/plugin-vue.md

# Vue plugin

import { SourceCode } from '@theme';

<SourceCode href="https://github.com/web-infra-dev/rsbuild/tree/main/packages/plugin-vue" />

The Vue plugin provides support for Vue 3 SFC (Single File Components). The plugin internally integrates [vue-loader](https://vue-loader.vuejs.org/) v17.

:::tip
For Vue 3 JSX / TSX syntax, please use the [Vue JSX plugin](https://github.com/rstackjs/rsbuild-plugin-vue-jsx).
:::

## Quick start

### Install plugin

Install the plugin with this command:

import { PackageManagerTabs } from '@theme';

<PackageManagerTabs command="add @rsbuild/plugin-vue -D" />

### Register plugin

Register the plugin in your `rsbuild.config.ts` file:

```ts title="rsbuild.config.ts"
import { pluginVue } from '@rsbuild/plugin-vue';

export default {
  plugins: [pluginVue()],
};
```

After registering the plugin, you can import `*.vue` SFC files in your code.

## Options

Customize Vue compilation behavior with these options:

### vueLoaderOptions

Options passed to `vue-loader`. See the [vue-loader documentation](https://vue-loader.vuejs.org/) for detailed usage.

* **Type:** `VueLoaderOptions`
* **Default:**

```js
const defaultOptions = {
  compilerOptions: {
    preserveWhitespace: false,
  },
  experimentalInlineMatchResource: true,
};
```

* **Example:**

```ts
pluginVue({
  vueLoaderOptions: {
    hotReload: false,
  },
});
```

### splitChunks

When [chunkSplit.strategy](/config/performance/chunk-split.md) set to `split-by-experience`, Rsbuild will automatically split `vue` and `router` related packages into separate chunks by default:

* `lib-vue.js`: includes `vue`, `vue-loader`, and their sub-dependencies (`@vue/shared`, `@vue/reactivity`, `@vue/runtime-dom`, `@vue/runtime-core`).
* `lib-router.js`: includes `vue-router`.

This option is used to control this behavior and determine whether the `vue` and `router` related packages need to be split into separate chunks.

* **Type:**

```ts
type SplitVueChunkOptions = {
  vue?: boolean;
  router?: boolean;
};
```

* **Default:**

```ts
const defaultOptions = {
  vue: true,
  router: true,
};
```

* **Example:**

```ts
pluginVue({
  splitChunks: {
    vue: false,
    router: false,
  },
});
```

### test

Customize the matching rule for Vue Single File Components (SFC).

* **Type:** [Rspack.RuleSetCondition](https://rspack.rs/config/module-rules#condition)
* **Default:** `/\.vue$/`
* **Version:** `>= 1.2.1`

This option allows you to extend the Vue plugin to handle additional file types. For example, you can first use a plugin or loader to transform `.md` files into Vue components, then configure the `test` option in the Vue plugin to match both `.vue` and `.md` files:

```ts
pluginVue({
  test: /\.(vue|md)$/,
});
```

## FAQ

### /deep/ selector causes compilation error

`/deep/` is a deprecated usage as of Vue v2.7. Since it is not a valid CSS syntax, CSS compilation tools like Lightning CSS will fail to compile it.

You can use `:deep()` instead. See [Vue - Deep Selectors](https://vuejs.org/api/sfc-css-features.html#deep-selectors) for more details.

```html
<style scoped>
  .a :deep(.b) {
    /* ... */
  }
</style>
```

> You can also refer to [Vue - RFC 0023](https://github.com/vuejs/rfcs/blob/master/active-rfcs/0023-scoped-styles-changes.md) for more details.