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@rspack/dev-server

npm version downloads node version license

Use Rspack with a development server that provides live reloading. This should be used for development only.

@rspack/dev-server is based on webpack-dev-server@5

Installation

First of all, install @rspack/dev-server and @rspack/core by your favorite package manager:

# npm
$ npm install @rspack/dev-server @rspack/core --save-dev

# yarn
$ yarn add @rspack/dev-server @rspack/core --dev

# pnpm
$ pnpm add @rspack/dev-server @rspack/core --save-dev

# bun
$ bun add @rspack/dev-server @rspack/core -D

Usage

There are two recommended ways to use @rspack/dev-server:

With the CLI

The easiest way to use it is with the @rspack/cli.

You can install it in your project by:

# npm
$ npm install @rspack/cli --save-dev

# yarn
$ yarn add @rspack/cli --dev

# pnpm
$ pnpm add @rspack/cli --save-dev

# bun
$ bun add @rspack/cli -D

And then start the development server by:

# with rspack.config.js
$ rspack serve

# with custom config file
$ rspack serve -c ./your.config.js

See CLI for more details.

While starting the development server, you can specify the configuration by the devServer field of your Rspack config file:

// rspack.config.js
module.exports = {
  // ...
  devServer: {
    // the configuration of the development server
    port: 8080
  },
};

See DevServer for all configuration options.

With the API

While it's recommended to run @rspack/dev-server via the CLI, you may also choose to start a server via the API.

import { RspackDevServer } from "@rspack/dev-server";
import rspack from "@rspack/core";
import rspackConfig from './rspack.config.js';

const compiler = rspack(rspackConfig);
const devServerOptions = {
  ...rspackConfig.devServer,
  // override
  port: 8888
};

const server = new RspackDevServer(devServerOptions, compiler);

server.startCallback(() => {
  console.log('Successfully started server on http://localhost:8888');
});

Cause @rspack/dev-server is based on webpack-dev-server@5, you can see the webpack-dev-server API for more methods of the server instance.

Credits

Thanks to the webpack-dev-server project created by @sokra

License

MIT licensed.