v1.6.0-beta.1

What's Changed

Highlights 💡

EsmLibraryPlugin supports preserveModules

EsmLibraryPlugin now provides experimental support for the preserveModules feature. This allows you to maintain your source code structure as is while bundling all libraries within the node_modules folder. You can try it out using the following configuration example:

Feel free to copy and use it!

import { rspack } from "@rspack/core";
import path from 'node:path'

export default{
  entry: "./index.js",
  output: {
    chunkFormat: false,  // required, EsmLibraryPlugin handles how chunk renders 
    chunkLoading: 'import',  // required, using es module dynamic import syntax to load other chunks
  },
  optimization: {
    runtimeChunk: true,  // recommended if you have async chunks
    concatenateModules: false,  // required, EsmLibraryPlugin handles scope hoisting
  },
  plugins: [
    new rspack.experiments.EsmLibraryPlugin({
      preserveModules: path.resolve(__dirname, './src')
    })
  ],
};

Experimental supports for defer import

Rspack now supports defer import, you can enable it by experiments.deferImport = true. It is worth noting that we currently only support import defer, import.defer() will be implemented in the near future.

export default {
  experiments: {
    deferImport: true
  }
}

Performance Improvements ⚡

• perf(cli): switch to cac and refactor code by @chenjiahan in #11893
• perf: replace graceful-fs with node:fs by @chenjiahan in #11894
• perf: remove JS side config validation by @chenjiahan in #11897
• perf(core): adjust default_blocking_threads to 4 in linux with slower fs by @hardfist in #11908
• perf: add support for module.unsafeCache configuration by @SyMind in #11898
• perf: don't drop rust compiler instance in non-watch mode by @hardfist in #11920
• perf: move crypto imports to lazy require calls by @chenjiahan in #11930
• perf: replace node:assert with explicit error checks by @chenjiahan in #11928
• perf(cli): replace colorette with picocolors by @chenjiahan in #11932
• perf: lazy load node:worker_threads to improve startup time by @chenjiahan in #11931

New Features 🎉

• feat(esm): remove empty unneeded runtime chunks by @JSerFeng in #11892
• feat(create-rspack): add type annotations to JS configs by @chenjiahan in #11896
• feat: support defer import by @ahabhgk in #11871
• feat: EsmLibraryPlugin supports preserveModules by @JSerFeng in #11921

Bug Fixes 🐞

• fix: should export from entry chunk for cjs reexport default by @JSerFeng in #11884
• fix: should not cache dependency instance in DynamicEntryPlugin by @SyMind in #11888
• fix: updated dependencies sync to persistent cache by @jerrykingxyz in #11910
• fix: no need to create compiler instance when closing compiler by @chenjiahan in #11923
• fix: should allow override can_inline_use in flag dependency usage plugin by @ahabhgk in #11934
• fix: perf regression caused by is_deferred by @ahabhgk in #11944

Refactor 🔨

• refactor: make artifact collect affected dependencies by @jerrykingxyz in #11905
• refactor: clean up default stats plugins by @chenjiahan in #11904
• refactor: consolidate ModuleError and ModuleWarning classes by @chenjiahan in #11935

Document Updates 📖

• docs(config): optimization.chunkIds update by @vsn4ik in #11900
• docs: add guide for setting thread pool size via environment variable by @chenjiahan in #11912
• docs: fix zh readme miss two line in credits by @WuMingDao in #11917
• docs: sync zh and en readme by @WuMingDao in #11918

Other Changes

• test: use promise instead of done callback by @9aoy in #11872
• chore(deps): update pnpm to v10.18.3 by @renovate[bot] in #11875
• chore: enable some Rslint rules by @chenjiahan in #11869
• chore: release v1.6.0-beta.0 by @JSerFeng in #11830
• chore(deps): update patch npm dependencies by @renovate[bot] in #11874
• chore(deps): update github-actions by @renovate[bot] in #11873
• chore: remove outdated OTP release scripts by @chenjiahan in #11885
• chore(deps): update dependency @playwright/test to v1.56.0 by @renovate[bot] in #11876
• chore: eliminate pnpm install platform warnings by @chenjiahan in #11889
• chore: clean up unused dependencies in test tools package by @chenjiahan in #11886
• chore(deps): update dependency react-refresh to ^0.18.0 by @renovate[bot] in #11810
• test(normalCases): use promise instead of done callback by @9aoy in #11879
• chore(deps): upgrade zod from v3 to v4 and update imports by @chenjiahan in #11883
• chore: Using env to enable sftrace by @quininer in #11880
• test: rewrite hot test cases with NEXT_HMR by @LingyuCoder in #11882
• test: migrate config tests to rstest by @9aoy in #11895
• test: use jsdom runner to run most cases by @LingyuCoder in #11901
• test: Revert 'migrate config tests to rstest (#11895)' by @9aoy in #11902
• test: add warn while closing compiler with failure by @LingyuCoder in #11909
• test: migrate config tests to rstest by @9aoy in #11911
• ci: fix lazy-compilation/persistent-cache ci failed by @jerrykingxyz in #11926
• test: use jsdom runner to run all cases by @LingyuCoder in #11924
• chore: enable Rslint rule: no-empty-interface by @shuga2704 in #11915
• chore: switch to self-hosted macOS runners by @stormslowly in #11925
• chore: fix rustflags not work for dev profile by @quininer in #11936
• test: display error location in jsdom by @LingyuCoder in #11937
• chore(deps): update patch npm dependencies by @renovate[bot] in #11957
• chore(deps): update dependency @arco-design/web-react to ^2.66.6 by @renovate[bot] in #11958
• chore(deps): update dependency @module-federation/runtime-tools to v0.21.1 by @renovate[bot] in #11959
• chore(deps): update crates swc_core to v45.0.1 by @chenjiahan in #11951

New Contributors

• @WuMingDao made their first contribution in #11917
• @shuga2704 made their first contribution in #11915

Full Changelog: v1.6.0-beta.0...v1.6.0-beta.1