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Showing content from https://github.com/rspack-contrib/rspack-plugin-react-refresh below:

rspack-contrib/rspack-plugin-react-refresh: React refresh plugin for Rspack.

React refresh plugin for Rspack.

First you need to install this plugin and its dependencies:

npm add @rspack/plugin-react-refresh react-refresh -D
# or
yarn add @rspack/plugin-react-refresh react-refresh -D
# or
pnpm add @rspack/plugin-react-refresh react-refresh -D
# or
bun add @rspack/plugin-react-refresh react-refresh -D

Import the plugin in your code:

• ES modules:

// Named import (recommended)
import { ReactRefreshRspackPlugin } from "@rspack/plugin-react-refresh";

• CommonJS:

const ReactRefreshRspackPlugin = require("@rspack/plugin-react-refresh");

Enabling React Fast Refresh functionality primarily involves two aspects: code injection and code transformation.

• Code injection will inject some code from the react-refresh package, as well as some custom runtime code, all of which are integrated in this plugin and can be injected through.
• Code transformation can be added through loaders, such as jsc.transform.react.refresh for swc-loader or the react-refresh/babel for babel-loader.

const ReactRefreshPlugin = require("@rspack/plugin-react-refresh");
const isDev = process.env.NODE_ENV === "development";

module.exports = {
  experiments: {
    rspackFuture: {
      disableTransformByDefault: true,
    },
  },
  // ...
  mode: isDev ? "development" : "production",
  module: {
    rules: [
      {
        test: /\.jsx$/,
        use: {
          loader: "builtin:swc-loader",
          options: {
            jsc: {
              parser: {
                syntax: "ecmascript",
                jsx: true,
              },
              transform: {
                react: {
                  development: isDev,
                  refresh: isDev,
                },
              },
            },
          },
        },
      },
    ],
  },
  plugins: [isDev && new ReactRefreshPlugin()].filter(Boolean),
};

Compared to the previous approach, this method decouples the React Fast Refresh code injection logic from the transformation logic. The code injection logic is handled uniformly by this plugin, while the code transformation is handled by loaders. This means that this plugin can be used in conjunction with builtin:swc-loader, swc-loader, or babel-loader.

• For usage with builtin:swc-loader, you can refer to the example at examples/react-refresh, When using with swc-loader, simply replace builtin:swc-loader with swc-loader.
• For usage with babel-loader, you can refer to the example at examples/react-refresh-babel-loader

• Type: Rspack.RuleSetCondition
• Default: /\.([cm]js|[jt]sx?|flow)$/i

Include files to be processed by the plugin. The value is the same as the rule.test option in Rspack.

new ReactRefreshPlugin({
  include: [/\.jsx$/, /\.tsx$/],
});

• Type: Rspack.RuleSetCondition
• Default: /node_modules/

Exclude files from being processed by the plugin. The value is the same as the rule.exclude option in Rspack.

new ReactRefreshPlugin({
  exclude: [/node_modules/, /some-other-module/],
});

• Type: Rspack.RuleSetCondition
• Default: undefined

Can be used to exclude certain resources from being processed by the plugin by the resource query. The value is the same as the rule.resourceQuery option in Rspack.

For example, to exclude all resources with the raw query, such as import rawTs from './ReactComponent.ts?raw';, use the following:

new ReactRefreshPlugin({
  resourceQuery: { not: /raw/ },
});

• Type: boolean
• Default: false

Whether to force enable the plugin.

By default, the plugin will not be enabled in non-development environments. If you want to force enable the plugin, you can set this option to true.

new ReactRefreshPlugin({
  forceEnable: true,
});

It is useful if you want to:

• Use the plugin in production.
• Use the plugin with the none mode without setting NODE_ENV.
• Use the plugin in environments we do not support, such as electron-prerender (WARNING: Proceed at your own risk).

• Type: string
• Default: output.uniqueName || output.library

Sets a namespace for the React Refresh runtime.

It is most useful when multiple instances of React Refresh is running together simultaneously.

• Type: boolean | OverlayOptions
• Default: false

Modify the behavior of the error overlay.

Checkout OverlayOptions type signature for more details.

• Enable the error overlay:

new ReactRefreshPlugin({
  overlay: true,
});

• Configure the error overlay:

new ReactRefreshPlugin({
  overlay: {
    // ...
  },
});

Thanks to the react-refresh-webpack-plugin created by @pmmmwh, which inspires implement this plugin.

@rspack/plugin-react-refresh is MIT licensed.

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