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Vue JSX Plugin

Source

The Vue plugin provides support for Vue 3 JSX / TSX syntax. The plugin internally integrates @vue/babel-plugin-jsx.

Quick Start

Install Plugin

You can install the plugin using the following command:

npm
yarn
pnpm
bun
npm add @rsbuild/plugin-babel @rsbuild/plugin-vue-jsx -D

Register Plugin

You can register the plugin in the rsbuild.config.ts file:

rsbuild.config.ts
import { pluginBabel } from '@rsbuild/plugin-babel';
import { pluginVueJsx } from '@rsbuild/plugin-vue-jsx';

export default {
  plugins: [
    pluginBabel({
      include: /\.(?:jsx|tsx)$/,
      exclude: /[\\/]node_modules[\\/]/,
    }),
    pluginVueJsx(),
  ],
};

After registering the plugin, you can use Vue's JSX / TSX syntax in .jsx, .tsx, and .vue files.

TIP

Since the Vue JSX plugin relies on Babel for compilation, you need to additionally add the Babel plugin.

Babel compilation will introduce extra overhead, in the example above, we use include to match .jsx and .tsx files, thereby reducing the performance cost brought by Babel.

Vue SFC

When using JSX in Vue SFC, you need to add lang="jsx" or lang="tsx" to the <script> tag.

  • JSX:
App.vue
<script lang="jsx">
  const vnode = <div>hello</div>;
</script>
  • TSX:
App.vue
<script lang="tsx">
  const vnode = <div>hello</div>;
</script>

JSX Type Inference

When using Vue >= 3.3, please set "jsxImportSource": "vue" in tsconfig.json to enable JSX type inference.

tsconfig.json
{
  "compilerOptions": {
    "jsxImportSource": "vue"
  }
}

For more details, see Vue - JSX Type Inference.

Options

If you need to customize the compilation behavior of Vue, you can use the following configs.

vueJsxOptions

Options passed to @vue/babel-plugin-jsx, please refer to the @vue/babel-plugin-jsx documentation for detailed usage.

  • Type:
type VueJSXPluginOptions = {
  /** transform `on: { click: someCallback }` to `onClick: someCallback` */
  transformOn?: boolean;
  /** enable optimization or not. */
  optimize?: boolean;
  /** merge static and dynamic class / style attributes / onSomething handlers */
  mergeProps?: boolean;
  /** configuring custom elements */
  isCustomElement?: (tag: string) => boolean;
  /** enable object slots syntax */
  enableObjectSlots?: boolean;
  /** Replace the function used when compiling JSX expressions */
  pragma?: string;
};

  • Default: {}

  • Example:

pluginVueJsx({
  vueJsxOptions: {
    transformOn: true,
  },
});