For AI agents: the complete documentation index is available at https://rspack.rs/llms.txt, the full documentation bundle is available at https://rspack.rs/llms-full.txt, and this page is available as Markdown at https://rspack.rs/plugins/deterministic-chunk-ids-plugin.md.
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      • DeterministicChunkIdsPlugin

      DeterministicChunkIdsPlugin assigns short numeric chunk ids that remain stable between builds, helping with long-term caching.

      optimization.chunkIds: 'deterministic' uses this plugin internally. Add the plugin manually when you need to customize its options.

      Examples

      rspack.config.mjs
      import rspack from '@rspack/core';

export default {
  optimization: {
    chunkIds: false,
  },
  plugins: [
    new rspack.ids.DeterministicChunkIdsPlugin({
      salt: 42,
    }),
  ],
};

      Options

      salt

      • Type: number
      • Default: 10

      The hash salt used when generating ids. Change this value to try a different hash starting value in the same id space.