Experiments#

Enable and try out some experimental features.

• Type： Object

experiments.incrementalRebuild#

Enable incremental rebuild. true will try to reuse the results of the last build when rebuild to improve build speed, supports configuration of different stages, the default is enabled.

• Type： boolean | { make?: boolean, emitAsset?: boolean }
• Default： true

experiments.outputModule#

• Type： boolean
• Default： true

Once enabled, Rspack will output ECMAScript module syntax whenever possible. For instance, import() to load chunks, ESM exports to expose chunk data, among others.

module.exports = {
  experiments: {
    outputModule: true,
  },
};

experiments.css#

• Type： boolean
• Default： true

Once enabled, Rspack will enable native CSS support, Note that if you're using style-loader and css-loader, you should disable this option because style-loader and css-loader will conflict with native CSS.