Command line interface

@rspack/cli is the command line tool for Rspack, providing a variety of commands to make working with Rspack easier.

If you do not have @rspack/cli installed, please read the Quick start section first.
If you are using Rsbuild, please refer to the Rsbuild CLI section.

Compatible with webpack-cli

@rspack/cli is not compatible with webpack-cli, so there will be some differences between the two.

All commands

To view all available CLI commands, run the following command in the project directory:

npx rspack -h

Common flags

Rspack CLI provides several common flags that can be used with all commands:

Flag	Description
-c, --config [value]	Specify the path to the configuration file, see Specify the configuration file
--configLoader	Specify the loader to load the config file, can be `native` or `register`, defaults to `register`
--configName	Specify the name of the configuration to use.
--nodeEnv	Set the value of `process.env.NODE_ENV`, defaults to `development` for `rspack dev`, and `production` for `rspack build` and `rspack preview`
-h, --help	Show help information
-v, --version	Show version number

TIP

All flags in Rspack CLI support the camelCase and kebab-case, for example, both --configLoader and --config-loader are valid.

rspack build

rspack build is used to run Rspack build, which will generate the output files in the output.path directory.

npx rspack build  # Read the `rspack.config.*` configuration file by default

rspack build can be abbreviated as rspack b:

npx rspack b

Use the -c or --config flag to specify the configuration file path:

npx rspack build -c ./your.config.js

The complete flags are as follows:

rspack build

Options:
      --entry          entry file                                        [array]
  -o, --outputPath     output path dir                                  [string]
  -m, --mode           mode                                             [string]
  -w, --watch          watch                          [boolean] [default: false]
      --env            env passed to config function                     [array]
  -d, --devtool        devtool                        [boolean] [default: false]
      --analyze        analyze                        [boolean] [default: false]
      --json           emit stats json
      --profile        capture timing information for each module
                                                      [boolean] [default: false]

rspack dev

rspack dev is used to run Rspack dev server, which will start a local dev server that will listen for file changes and automatically refresh the browser.

npx rspack dev

Use the -c or --config flag to specify the configuration file path:

npx rspack dev -c ./your.config.js

rspack dev can be abbreviated as rspack serve or rspack s:

npx rspack s
npx rspack serve

The complete flags are as follows:

rspack dev

Options:
      --entry          entry file                                        [array]
  -o, --outputPath     output path dir                                  [string]
  -m, --mode           mode                                             [string]
  -w, --watch          watch                          [boolean] [default: false]
      --env            env passed to config function                     [array]
  -d, --devtool        devtool                        [boolean] [default: false]
      --hot            enables hot module replacement
      --port           allows to specify a port to use                  [number]
      --host           allows to specify a hostname to use              [string]

rspack preview

rspack preview is used to preview the production build output locally, note that you need to build the output first by running the rspack build command.

npx rspack preview

The complete flags are as follows:

rspack preview [dir]

run the rspack server for build output

Positionals:
  dir  directory want to preview                                        [string]

Options:
      --publicPath  static resource server path                         [string]
      --port        preview server port                                 [number]
      --host        preview server host                                 [string]
      --open        open browser                                       [boolean]
      --server      Configuration items for the server.                 [string]

ON THIS PAGE

#Command line interface

#All commands

#Common flags

#rspack build

#rspack dev

#rspack preview

Command line interface

All commands

Common flags

rspack build

rspack dev

rspack preview