December 11, 2023

#Announcing Rsbuild 0.2

The Rsbuild 0.2 contains some incompatible API changes. Please refer to the current documentation for upgrading.

#Targets

We will move the target option of createRsbuild to rsbuild config, this change allows user to configure targets in the rsbuild config file.

• before:

const rsbuild = await createRsbuild({
  target: ['web', 'node'],
});

• after:

// rsbuild.config.ts
export default {
  output: {
    targets: ['web', 'node'],
  },
};

Only affect JavaScript API. Users using the Rsbuild CLI do not need to change.

#Entry

Remove the deprecated source.entries config.

source.entries has been renamed to source.entry since Rsbuild 0.1.0, and we will remove the legacy source.entries config in Rsbuild v0.2.0.

• before:

// rsbuild.config.ts
export default {
  source: {
    entries: {},
  },
};

• after:

// rsbuild.config.ts
export default {
  source: {
    entry: {},
  },
};

#Write to disk

dev.writeToDisk defaults to false.

Motivation:

• Reduce fs overhead and improve dev server performance.
• Avoid trigger watcher of UnoCSS and other tools. See #654.
• Align the default behavior with webpack-dev-middleware and other community dev servers.

User can enable writeToDisk manually:

export default {
  dev: {
    writeToDisk: true,
  },
};

#Babel plugin

@rsbuild/plugin-babel will move all babel-loader options to babelLoaderOptions:

• before:

pluginBabel({
  plugins: [],
  presets: [],
});

• after:

pluginBabel([
  babelLoaderOptions: {
    plugins: [],
    presets: [],
  }
]);

This change allows us to add more options for pluginBabel, such as include and exclude.

#Source map

output.disableSourceMap has been renamed to output.sourceMap.

• before:

export default {
  output: {
    disableSourceMap: {
      js: true,
      css: true,
    },
  },
};

• after:

export default {
  output: {
    sourceMap: {
      js: false,
      css: false,
    },
  },
};

The default value of source map has also been updated to improve build performance.

• before: generate JS / CSS source map in development, generate JS source map in production.
• after: generate JS source map in development, no source map are generated in production.

#Inject styles

Rename output.disableCssExtract to output.injectStyles to be clearer:

• before:

export default {
  output: {
    disableCssExtract: true,
  },
};

• after:

export default {
  output: {
    injectStyles: true,
  },
};