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React

在本文档中,你将学习如何使用 Rslib 构建 React 组件库,你可在 示例 中查看 React 相关演示项目。

创建 React 项目

你可以使用 create-rslib 创建 Rslib + React 项目。只需执行以下命令:

npm
yarn
pnpm
bun
npm create rslib@latest

然后,当提示 "Select template" 时选择 React

在现有 Rslib 项目中使用

开发 React 组件,需要在 rslib.config.ts 中设置 target"web"。 这一点至关重要,因为 Rslib 默认将 target 设置为 "node",这与 Rsbuild 的 target 默认值不同。

要编译 React(JSX 和 TSX),你需要注册 Rsbuild React 插件。该插件将自动添加 React 构建所需的配置。

例如,在 rslib.config.ts 中注册:

rslib.config.ts
import { 
function defineConfig(config: RslibConfig): RslibConfig (+3 overloads)

This function helps you to autocomplete configuration types. It accepts a Rslib config object, or a function that returns a config.

defineConfig
} from '@rslib/core';
import {
const pluginReact: (options?: PluginReactOptions) => RsbuildPlugin
pluginReact
} from '@rsbuild/plugin-react';
export default
function defineConfig(config: RslibConfig): RslibConfig (+3 overloads)

This function helps you to autocomplete configuration types. It accepts a Rslib config object, or a function that returns a config.

defineConfig
({
RslibConfig.lib: LibConfig[]
lib
: [
// ... ],
RslibConfig.output?: RslibOutputConfig | undefined

Options for build outputs.

@inheritdoc
output
: {
RslibOutputConfig.target?: RsbuildTarget | undefined

Setting the build target for Rsbuild.

@override@default'node'
target
: 'web',
},
EnvironmentConfig.plugins?: RsbuildPlugins | undefined

Configure Rsbuild plugins.

plugins
: [
function pluginReact(options?: PluginReactOptions): RsbuildPlugin
pluginReact
(/** options here */)],
});

JSX transform

  • 类型: 'automatic' | 'classic' | 'preserve'
  • 默认值: 'automatic'

React 引入了一个 新的 JSX transform 在版本 17 中。这个新的 transform 在使用 JSX 时无需导入 React

默认情况下,Rslib 使用新的 JSX 转换,即 runtime: 'automatic'。这需要 React 16.14.0 或更高版本,且 peerDependencies 中应声明 "react": ">=16.14.0"

要更改 JSX transform,可以在 @rsbuild/plugin-react 中设置 swcReactOptions 选项。

比如要使用 classic runtime 时:

rslib.config.ts
import { 
const pluginReact: (options?: PluginReactOptions) => RsbuildPlugin
pluginReact
} from '@rsbuild/plugin-react';
import {
function defineConfig(config: RslibConfig): RslibConfig (+3 overloads)

This function helps you to autocomplete configuration types. It accepts a Rslib config object, or a function that returns a config.

defineConfig
} from '@rslib/core';
export default
function defineConfig(config: RslibConfig): RslibConfig (+3 overloads)

This function helps you to autocomplete configuration types. It accepts a Rslib config object, or a function that returns a config.

defineConfig
({
RslibConfig.lib: LibConfig[]
lib
: [
// ... ],
RslibConfig.output?: RslibOutputConfig | undefined

Options for build outputs.

@inheritdoc
output
: {
RslibOutputConfig.target?: RsbuildTarget | undefined

Setting the build target for Rsbuild.

@override@default'node'
target
: 'web',
},
EnvironmentConfig.plugins?: RsbuildPlugins | undefined

Configure Rsbuild plugins.

plugins
: [
function pluginReact(options?: PluginReactOptions): RsbuildPlugin
pluginReact
({
swcReactOptions?: ReactConfig | undefined

Configure the behavior of SWC to transform React code, the same as SWC's jsc.transform.react.

swcReactOptions
: {
ReactConfig.runtime?: "automatic" | "classic" | "preserve" | undefined

Decides which runtime to use when transforming JSX.

  • "automatic" - Automatically imports the functions that JSX transpiles to. This is the modern approach introduced in React 17+ that eliminates the need to manually import React in every file that uses JSX.
  • "classic" - Uses the traditional JSX transform that relies on React.createElement calls. Requires React to be in scope, which was the standard behavior before React 17.
  • "preserve" - Leaves JSX syntax unchanged without transforming it.
@default"classic"
runtime
: 'classic',
}, }), ], });

当你希望在构建产物中保留原始 JSX 时,可以将 runtime 设置为 'preserve'。该模式可以保持 JSX 语法原样,不做任何转换,方便后续由其他打包工具处理。

Warning

使用 runtime: 'preserve' 时,必须设置 bundle: false 启用 bundleless 模式 使文件保持非打包状态。

若要输出 .jsx 后缀的文件,可通过 output.filename 配置 JS 文件名模版:

rslib.config.ts
import { 
const pluginReact: (options?: PluginReactOptions) => RsbuildPlugin
pluginReact
} from '@rsbuild/plugin-react';
import {
function defineConfig(config: RslibConfig): RslibConfig (+3 overloads)

This function helps you to autocomplete configuration types. It accepts a Rslib config object, or a function that returns a config.

defineConfig
} from '@rslib/core';
export default
function defineConfig(config: RslibConfig): RslibConfig (+3 overloads)

This function helps you to autocomplete configuration types. It accepts a Rslib config object, or a function that returns a config.

defineConfig
({
RslibConfig.lib: LibConfig[]
lib
: [
{
LibConfig.bundle?: boolean | undefined

Whether to bundle the library.

@defaultValuetrue@seehttps://rslib.rs/config/lib/bundle
bundle
: false,
LibConfig.format?: Format | undefined

Output format for the generated JavaScript files.

@defaultValue'esm'@seehttps://rslib.rs/config/lib/format
format
: 'esm',
LibConfig.output?: RslibOutputConfig | undefined

Options for build outputs.

@inheritdoc
output
: {
OutputConfig.filename?: FilenameConfig | undefined

Sets the filename of output files.

filename
: {
js?: Filename | undefined

The name of the JavaScript files.

@default

- dev: '[name].js'

  • prod: '[name].[contenthash:10].js'
js
: '[name].jsx',
}, }, }, ],
EnvironmentConfig.plugins?: RsbuildPlugins | undefined

Configure Rsbuild plugins.

plugins
: [
function pluginReact(options?: PluginReactOptions): RsbuildPlugin
pluginReact
({
swcReactOptions?: ReactConfig | undefined

Configure the behavior of SWC to transform React code, the same as SWC's jsc.transform.react.

swcReactOptions
: {
ReactConfig.runtime?: "automatic" | "classic" | "preserve" | undefined

Decides which runtime to use when transforming JSX.

  • "automatic" - Automatically imports the functions that JSX transpiles to. This is the modern approach introduced in React 17+ that eliminates the need to manually import React in every file that uses JSX.
  • "classic" - Uses the traditional JSX transform that relies on React.createElement calls. Requires React to be in scope, which was the standard behavior before React 17.
  • "preserve" - Leaves JSX syntax unchanged without transforming it.
@default"classic"
runtime
: 'preserve',
}, }), ], });

JSX import source

  • 类型: string
  • 默认值: 'react'

runtime 的值为 'automatic',可以通过 importSource 指定 JSX transform 的 import 路径。

例如,当使用 Emotion,你可以设置 importSource'@emotion/react':

rslib.config.ts
import { 
const pluginReact: (options?: PluginReactOptions) => RsbuildPlugin
pluginReact
} from '@rsbuild/plugin-react';
import {
function defineConfig(config: RslibConfig): RslibConfig (+3 overloads)

This function helps you to autocomplete configuration types. It accepts a Rslib config object, or a function that returns a config.

defineConfig
} from '@rslib/core';
export default
function defineConfig(config: RslibConfig): RslibConfig (+3 overloads)

This function helps you to autocomplete configuration types. It accepts a Rslib config object, or a function that returns a config.

defineConfig
({
RslibConfig.lib: LibConfig[]
lib
: [
// ... ],
RslibConfig.output?: RslibOutputConfig | undefined

Options for build outputs.

@inheritdoc
output
: {
RslibOutputConfig.target?: RsbuildTarget | undefined

Setting the build target for Rsbuild.

@override@default'node'
target
: 'web',
},
EnvironmentConfig.plugins?: RsbuildPlugins | undefined

Configure Rsbuild plugins.

plugins
: [
function pluginReact(options?: PluginReactOptions): RsbuildPlugin
pluginReact
({
swcReactOptions?: ReactConfig | undefined

Configure the behavior of SWC to transform React code, the same as SWC's jsc.transform.react.

swcReactOptions
: {
ReactConfig.importSource?: string | undefined

Declares the module specifier to be used for importing the jsx and jsxs factory functions when using runtime 'automatic'

@default"react"
importSource
: '@emotion/react',
}, }), ], });

React Compiler

React Compiler 是一个构建时工具,它可以自动优化你的 React 应用。它支持纯 JavaScript,并且了解 React 的规则,因此你无需重写任何代码即可使用它。

在开始使用 React Compiler 之前,建议阅读 React Compiler 文档,以了解 React Compiler 的功能、当前状态和使用方法。

如何使用

在 Rslib 中使用 React Compiler 的步骤如下:

  1. 升级 reactreact-dom 版本到 19。如果你暂时无法升级,可以在 React 17 或 18 项目中安装 react-compiler-runtime,以允许编译后的代码在 19 之前的版本上运行。
  2. 目前 React Compiler 仅提供了 Babel 插件,你需要安装 @rsbuild/plugin-babelbabel-plugin-react-compiler
  3. 在你的 Rslib 配置文件中注册 Babel 插件:
rslib.config.ts
import { pluginBabel } from '@rsbuild/plugin-babel';
import { pluginReact } from '@rsbuild/plugin-react';
import { defineConfig } from '@rslib/core';

export default defineConfig({
  plugins: [
    pluginReact(),
    pluginBabel({
      include: /\.[jt]sx?$/,
      exclude: [/[\\/]node_modules[\\/]/],
      babelLoaderOptions(opts) {
        opts.plugins ??= [];
        opts.plugins.unshift('babel-plugin-react-compiler');
      },
    }),
  ],
});
Tip

include 使用 /\.[jt]sx?$/ 来匹配 .js.jsx.ts.tsx 文件。这样可以确保 React Compiler 能够优化组件和自定义 Hooks,因为自定义 Hooks 通常定义在 .ts 文件中。exclude 中的 node_modules 可以防止编译器处理第三方依赖。

如果你只想编译 JSX/TSX 文件,可以使用 include: /\.(?:jsx|tsx)$/,但 .ts 文件中的自定义 Hooks 将不会被优化。

你也可以参考 示例项目

配置

通过以下方式来传入 React Compiler 的配置:

rslib.config.ts
import { pluginBabel } from '@rsbuild/plugin-babel';
import { pluginReact } from '@rsbuild/plugin-react';
import { defineConfig } from '@rslib/core';

const ReactCompilerConfig = {
  /* ... */
};

export default defineConfig({
  plugins: [
    pluginReact(),
    pluginBabel({
      include: /\.[jt]sx?$/,
      exclude: [/[\\/]node_modules[\\/]/],
      babelLoaderOptions(opts) {
        opts.plugins ??= [];
        opts.plugins.unshift([
          'babel-plugin-react-compiler',
          ReactCompilerConfig,
        ]);
      },
    }),
  ],
});

对于 React 17 和 18 的项目,除了安装 react-compiler-runtime,还需要指定 target

rslib.config.ts
const ReactCompilerConfig = {
  target: '18', // '17' | '18' | '19'
};

SVGR

阅读 SVGR 了解更多详细信息。

进一步了解