# rspack: what changed from 1 to 2

- Product: rspack (https://whatsnew.fyi/product/rspack)
- Vendor: rspack
- Range: changelog entries numbered after v1.7.12 up to and including v2.2.2, stable releases only
- Entries below: 15 releases (newest first)
- Resolved: 1 is v1.7.12 and 2 is v2.2.2, the newest stable release of each major we track
- Carrying security changes: 0 · CVEs mentioned: 0 · Mentioning breaking changes: 0 · Removing or deprecating something: 2
- Page: https://whatsnew.fyi/product/rspack/compare/1...2

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

## What changed (199 changes, grouped by kind)

### Added

#### v2.2.2 (2026-09-01)

- Add infrastructure logging to the new cache
- Add JavascriptModulesPlugin.getChunkFilenameTemplate

#### v2.2.1 (2026-08-27)

- Align wasmStreamingFallback with webpack
- Track dependencies in loader cache

#### v2.2.0 (2026-08-26)

- Implement generation-based memory cache eviction
- Add idle cache compaction with interruption handling
- Integrate module code generation to the new cache
- Add fine-grained new cache options
- Add compat-hashed module ids
- Analyze dynamic imports in Promise.all destructuring
- Integrate new cache into source map devtool plugin
- Add compilation.runtimeTemplate
- Add compact chunk ids
- Support opt-in per-loader caching

#### v2.1.10 (2026-08-13)

- Expose ExternalModule chunkCondition hook
- Implement new cache system
- Integrate new cache to minimize cache

#### v2.1.9 (2026-08-11)

- Warn on unknown import.meta properties
- Add builds for binding-linux-(ppc64,s390x)-gnu
- Support --no-git flag in create-rspack
- Support caseSensitive option in import.meta.glob

#### v2.1.8 (2026-08-04)

- Support cache.name and cache.storage.location options to align with webpack's persistent cache semantics
- Emit css.c and css.r in the hot-update manifest for precise CSS updates
- Inject module origin for import.meta.rstest

#### v2.1.6 (2026-07-28)

- Support import.meta.env

#### v2.1.4 (2026-07-14)

- Support fine-grained import.meta parser options allowing each known import.meta property to be configured independently
- Support static worker new URL output with module.parser.javascript.worker accepting an object form with alias and url
- Support logical assignment for chunk loading global in runtime

#### v2.1.3 (2026-07-07)

- Add name/value accessors to ESMExportSpecifierDependency
- Expose the real Chunk instance to filename functions

#### v2.1.2 (2026-06-30)

- Support `import.meta` style module variables including `import.meta.rspackPublicPath`, `import.meta.rspackBaseUri`, `import.meta.rspackShareScopes`, `import.meta.rspackInitSharing`, `import.meta.rspackNonce`, `import.meta.rspackUniqueId`, `import.meta.rspackVersion`, and `import.meta.rspackHash`

#### v2.1.1 (2026-06-27)

- Add dependencyId and loc to export usage edges in rsdoctor

#### v2.1.0 (2026-06-26)

- Expose module error JS API (also in v2.1.0-beta.0)
- Log persistent cache read and write timings (also in v2.1.0-beta.0)
- Expose getProvidedExports() to JS API (also in v2.1.0-beta.0)
- Support drop inactive branch dependencies for member expressions
- Introduce experimental.runtimeMode (also in v2.1.0-beta.0)
- Support branch guarded export presence for `in` on ESM imports
- Bump swc to support react compiler
- Expose export usage graph to rsdoctor
- Add maxAge and maxGenerations for persistent cache cleanup (also in v2.1.0-beta.0)
- Support riscv64 targets

#### v2.1.0-beta.0 (2026-06-18)

- Support React Compiler in builtin:swc-loader
- Support drop inactive branch dependencies for member expr
- Support branch guarded export presence for in on ESM imports

### Changed

#### v2.2.2 (2026-09-01)

- Optimize deterministic module id assignment
- Share runtimes in flag dependency usage
- Optimize module rendering for chunk assets
- Optimize create module hashes

#### v2.2.1 (2026-08-27)

- Store FactorizeInfo path dependencies as compact slices

#### v2.2.0 (2026-08-26)

- Improve unicode handling and support more CSS modules cases, boost performance
- Cache converted module original source
- Batch splitChunks JavaScript callbacks
- Avoid parsing concatenated module codegen
- Preallocate identifier path buffers
- Intern ArcPath as a single-allocation prehashed path
- Use rayon parallel scheduling for new cache db
- Skip the directory walk for glob patterns without metacharacters

#### v2.1.9 (2026-08-11)

- Cache and order static patterns in copy-plugin
- Limit incremental HMR asset processing
- Avoid unnecessary call wrappers for runtime helpers
- Cache compilation assets proxy
- Avoid copying aligned archive buffers in cache
- Avoid duplicating export dependency data in JSON
- Improve source map convert performance

#### v2.1.8 (2026-08-04)

- cache.storage.directory is now the base directory, with final cache location defaulting to <directory>/<cache.name>

#### v2.1.7 (2026-07-29)

- Share source code across diagnostics to improve performance

#### v2.1.6 (2026-07-28)

- Cache module concatenation analysis across roots
- Reuse module concatenation search state
- Reduce module concatenation hot-path overhead

#### v2.1.4 (2026-07-14)

- Enable parallel wasmtime compilation for improved performance
- Optimize ESM linking passes
- Deduplicate repeated dynamic reexport code
- Reduce hook macro expansion size and optimize performance

#### v2.1.3 (2026-07-07)

- Erase js tap storage types to reduce binary size
- Build rspack source maps directly
- Optimize module hash creation
- Pre-size per-module maps and vecs in mangle_exports

#### v2.1.2 (2026-06-30)

- Deduplicate runtime module macro glue for improved performance
- Avoid cloning side effects artifact in module concatenation

#### v2.1.1 (2026-06-27)

- Add persistent cache for SourceMapDevToolPlugin

#### v2.1.0 (2026-06-26)

- Enable pureFunctions by default
- Make persistent cache max generations default to 3
- Rename persistent cache maxGenerations to maxVersions
- Harden persistent cache version cleanup with typed version
- Make stale version cleanup fire-and-forget

#### v2.1.0-beta.0 (2026-06-18)

- Enable side-effect-free function analysis by default in production builds
- Bump swc to support react compiler

### Fixed

#### v2.2.2 (2026-09-01)

- Generate correct prefetch child assets
- Keep import.meta.url in createRequire when importMeta is disabled
- Align module need_build and FileSystemInfo with webpack
- Support all EnvironmentPlugin default values
- Improve incremental chunk graph reuse
- Await patch delivery before sealing completes in rsdoctor
- Ignore exportsOnly in local ident hashes for CSS
- Fallback eval devtools for modern-module
- Report diagnostics for unsupported context modes

#### v2.2.1 (2026-08-27)

- Correct compact hashed module and chunk IDs naming from compat-hashed to compact-hashed, with deprecated compatibility aliases maintained for backward compatibility
- Disable stats logging by default
- Disable incremental outside development mode
- Run afterCompile before shouldEmit and asset emission
- Clear stale issuer updates between rebuilds
- Exclude asset output path from URLs in CSS
- Bound concurrent asset writes during emit
- Update swc_ecma_minifier to 61.0.4
- Store server compiler ID in native coordinator
- Persist dependency id in metadata
- Normalize restored paths on Windows

#### v2.2.0 (2026-08-26)

- Pass HMR error to Preact refresh recovery handler
- Strip BOM from module content before concatenation in CSS extraction

#### v2.1.10 (2026-08-13)

- Process remaining module copies at lower priorities in split-chunks
- Allow scope hoisting for new URL targets in new-url-relative mode in esm_library
- Bump rkyv to 0.8.18 to fix RUSTSEC-2026-0233, RUSTSEC-2026-0234, and RUSTSEC-2026-0235
- Normalize string context from loaded config in CLI
- Share ExternalModule hooks across core instances
- Fix new cache compile failure on 32-bit platforms

#### v2.1.9 (2026-08-11)

- Improve circular real content hash error diagnostics
- Keep compilation dependency iterators disjoint
- Align cache version semantics with webpack
- Preserve ignored URL when import.meta.url is disabled
- Avoid runtime lock deadlock in napi
- Match compiler prefixes exactly in lazy compilation
- Avoid injecting shared providers into worker entrypoints in Module Federation
- Handle optional chains in member hook traversal
- Support loader context APIs in parallel loaders

#### v2.1.8 (2026-08-04)

- Preserve entry dependency identity in binding
- Preserve Lightning CSS license comments in loader
- Add missing CJS interop runtime requirement for ESM
- Avoid dead require bootstrap in runtime
- Preserve collision-free createRequire imports in runtime
- Clean up compilation-scoped plugin caches
- Hoist test API imports by source order in rstest
- Release custom runtime module generators on close in binding
- Preserve context exports in rspack runtime mode
- Correct full-hash chunk filenames in runtime
- Use POSIX asset keys in copy-plugin
- Remove redundant runtime declarations
- Handle SharedWorker string name option
- Avoid runtime scope conflicts in module factories
- Preserve direct exports bindings

#### v2.1.7 (2026-07-29)

- Release module graph connection wrappers

#### v2.1.6 (2026-07-28)

- Materialize namespace object for concatenated modules
- Parse preserved createRequire arguments
- Invalidate module hashes when assigning deterministic and natural ids
- Disable incremental chunk assets for entry fullhash filenames
- Propagate asset emit errors
- Avoid JavaScript output for URL-only assets
- Avoid worker external facade in bundleless output
- Execute worker entry modules in modern-module output
- Preserve defineConfig inference in CLI
- Preserve structured swc diagnostics in swc-loader
- Respect DllPlugin context for concatenated modules
- Scope maxVersions by compiler using compilerPath in cache

#### v2.1.5 (2026-07-21)

- Respect runtime mode in mf identifiers
- Preserve multiple referenced client exports in rsc
- Preserve createRequire().resolve with literal import.meta.url when requireResolve is disabled
- Preserve inline match resource imports in css
- Short-circuit optional import.meta calls
- Preserve exports for dynamic client references in rsc
- Avoid live chunk access when serializing stale stats
- Register hoisted mocks before importActual imports in rstest
- Run FsWatcher on a single owner task to fix concurrent &mut races
- Add module type when options are omitted in module output for worker
- Include output path in chunk render cache keys
- Support real content hash update hooks

#### v2.1.4 (2026-07-14)

- Clean up runtime global rendering
- Clean up chunk wrappers when compiler is garbage collected
- Enable runtime mode ESM context imports
- Revert Module Federation runtime identifiers
- Include paths in native filesystem errors
- Respect RSPACK_BINDING in loader workers
- Invalidate the target compiler for lazy compilation

#### v2.1.3 (2026-07-07)

- Update runtime context during hot updates
- Inline-value check must precede deferred pure checks in concatenation
- Skip re-applying unchanged CSS during HMR
- Preserve asset bytes for binary files
- Dedupe link HMR stylesheets in CSS
- Emit manifest assets with forward-slash names on Windows
- Unwrap dynamic source-phase imports in modern-module output
- Preserve static source-phase external bindings in esm_library
- Distinguish css wrapper sourcemap names
- Keep path data chunk compatible in binding

#### v2.1.2 (2026-06-30)

- Inject runtime require into browser MF runtime
- Preserve import phase in dynamic import external rendering
- Empty references export for cjs and dynamic import tree shaking

#### v2.1.1 (2026-06-27)

- Add guard for link.parentNode in css runtime
- Revert cjs export assignment side effects optimization

#### v2.1.0 (2026-06-26)

- Preserve inline source content for transform sourcemaps (also in v2.1.0-beta.0)
- Remove webpackSource and webpackDefer magic comments (also in v2.1.0-beta.0)
- Apply global overrideStrict for ContextModule (also in v2.1.0-beta.0)
- Filter ignored-subtree events that emit a spurious folder change in watcher
- Handle nested pure function calls in tree-shaking (also in v2.1.0-beta.0)

#### v2.1.0-beta.0 (2026-06-18)

- Filter ignored-subtree events that emit a spurious folder change
- Use ChunkWithSizeInfo delimiter in maxInitialSize chunk naming fallback path
- Wait for in-flight build before closing compiler
- Point wasi-worker-browser export to dist file
- Cache import.meta filename and dirname outside eval

### Removed

#### v2.1.10 (2026-08-13)

- Remove noisy import.meta warnings for unknown properties

#### v2.1.7 (2026-07-29)

- Remove the import.meta.env experimental feature that was introduced in Rspack 2.1.6

## Release notes

### v2.2.2

- Date: 2026-09-01
- Version: v2.2.2
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.2.2
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.2.2

- **added** — Add infrastructure logging to the new cache
- **added** — Add JavascriptModulesPlugin.getChunkFilenameTemplate
- **changed** — Optimize deterministic module id assignment
- **changed** — Share runtimes in flag dependency usage
- **changed** — Optimize module rendering for chunk assets
- **changed** — Optimize create module hashes
- **fixed** — Generate correct prefetch child assets
- **fixed** — Keep import.meta.url in createRequire when importMeta is disabled
- **fixed** — Align module need_build and FileSystemInfo with webpack
- **fixed** — Support all EnvironmentPlugin default values
- **fixed** — Improve incremental chunk graph reuse
- **fixed** — Await patch delivery before sealing completes in rsdoctor
- **fixed** — Ignore exportsOnly in local ident hashes for CSS
- **fixed** — Fallback eval devtools for modern-module
- **fixed** — Report diagnostics for unsupported context modes

##### What's Changed
###### New Features 🎉
* feat(cache): add intrastructure logging to the new cache by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/15338
* feat(javascript): add JavascriptModulesPlugin.getChunkFilenameTemplate by @kakiuwang-ui in https://github.com/web-infra-dev/rspack/pull/15280
###### Performance 🚀
* perf(ids): optimize deterministic module id assignment by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15393
* perf: share runtimes in flag dependency usage by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15388
* perf(core): optimize module rendering for chunk assets by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15394
* perf(core): optimize create module hashes by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15396
###### Bug Fixes 🐞
* fix(stats): generate correct prefetch child assets by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15208
* fix: keep import.meta.url in createRequire when importMeta is disabled by @lazerg in https://github.com/web-infra-dev/rspack/pull/15273
* fix(core): align module need_build and FileSystemInfo with webpack by @hardfist in https://github.com/web-infra-dev/rspack/pull/15374
* fix(types): support all EnvironmentPlugin default values by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15382
* fix: improve incremental chunk graph reuse by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15373
* fix(rsdoctor): await patch delivery before sealing completes by @kakiuwang-ui in https://github.com/web-infra-dev/rspack/pull/15399
* fix(css): ignore exportsOnly in local ident hashes by @mattcosta7 in https://github.com/web-infra-dev/rspack/pull/15364
* fix: fallback eval devtools for modern-module by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/15404
* fix: report diagnostics for unsupported context modes by @dr4gan0x in https://github.com/web-infra-dev/rspack/pull/15361
###### Refactor 🔨
* refactor(loader): reuse filesystem snapshots for cache dependencies by @intellild in https://github.com/web-infra-dev/rspack/pull/15366
* refactor(core): remove BuildInfo clone by @hardfist in https://github.com/web-infra-dev/rspack/pull/15377
###### Document 📖
* docs: correct compact hashed API names by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15358
* docs: improve built-in plugin overview and examples by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15354
* docs: move webpack attribution to page footer by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15365
* docs: improve low-level plugin documentation by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15368
* docs: update webpack plugin compatibility by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15369
* docs: remove version info before Rspack 1.3.0 by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15371
* docs: standardize plugin documentation structure by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15378
* docs: improve BannerPlugin option documentation by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15392
* docs: improve IgnorePlugin documentation by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15395
* docs: improve plugin option documentation by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15398
* docs: remove extra code block spacing in collapse panels by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15403
* docs: improve ContextReplacementPlugin documentation by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15410
* docs: improve CssExtractRspackPlugin documentation by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15411
* docs: improve HtmlRspackPlugin documentation by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15412
* docs: improve HTML plugin guidance by @chenjiahan i

_[Truncated at 4000 characters — full notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.2.2]_

### v2.2.1

- Date: 2026-08-27
- Version: v2.2.1
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.2.1
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.2.1

- **fixed** — Correct compact hashed module and chunk IDs naming from compat-hashed to compact-hashed, with deprecated compatibility aliases maintained for backward compatibility
- **added** — Align wasmStreamingFallback with webpack
- **added** — Track dependencies in loader cache
- **changed** — Store FactorizeInfo path dependencies as compact slices
- **fixed** — Disable stats logging by default
- **fixed** — Disable incremental outside development mode
- **fixed** — Run afterCompile before shouldEmit and asset emission
- **fixed** — Clear stale issuer updates between rebuilds
- **fixed** — Exclude asset output path from URLs in CSS
- **fixed** — Bound concurrent asset writes during emit
- **fixed** — Update swc_ecma_minifier to 61.0.4
- **fixed** — Store server compiler ID in native coordinator
- **fixed** — Persist dependency id in metadata
- **fixed** — Normalize restored paths on Windows

##### Highlights

###### Corrected `compact-hashed` IDs naming

Rspack 2.2.0 introduced compact hashed module and chunk IDs under the mistakenly named `compat-hashed` option and `CompatHashedModuleIdsPlugin` / `CompatHashedChunkIdsPlugin` APIs. Rspack 2.2.1 corrects these names to `compact-hashed`, `CompactHashedModuleIdsPlugin`, and `CompactHashedChunkIdsPlugin`.

The names introduced in 2.2.0 remain available as deprecated compatibility aliases, but we recommend upgrading to Rspack 2.2.1 and using the corrected names:

```js
module.exports = {
  optimization: {
    moduleIds: 'compact-hashed',
    chunkIds: 'compact-hashed',
  },
};
```

##### What's Changed
###### New Features 🎉
* feat(wasm): align wasmStreamingFallback with webpack by @CoderSerio in https://github.com/web-infra-dev/rspack/pull/15334
* feat: track dependencies in loader cache by @intellild in https://github.com/web-infra-dev/rspack/pull/15325
###### Performance 🚀
* perf(core): store FactorizeInfo path dependencies as compact slices by @stormslowly in https://github.com/web-infra-dev/rspack/pull/15306
###### Bug Fixes 🐞
* fix(cli): disable stats logging by default by @hardfist in https://github.com/web-infra-dev/rspack/pull/15328
* fix: disable incremental outside development mode by @hardfist in https://github.com/web-infra-dev/rspack/pull/15332
* fix(core): run afterCompile before shouldEmit and asset emission by @kakiuwang-ui in https://github.com/web-infra-dev/rspack/pull/15326
* fix(cache): clear stale issuer updates between rebuilds by @zhsama in https://github.com/web-infra-dev/rspack/pull/15276
* fix(css): exclude asset output path from URLs by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15315
* fix(core): bound concurrent asset writes during emit by @lazerg in https://github.com/web-infra-dev/rspack/pull/15342
* fix(minify): update swc_ecma_minifier to 61.0.4 by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15343
* fix(ids): correct compact hashed API names by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15356
* fix(rsc): store server compiler ID in native coordinator by @SyMind in https://github.com/web-infra-dev/rspack/pull/15307
* fix(cache): persist dependency id in metadata by @hardfist in https://github.com/web-infra-dev/rspack/pull/15345
* fix(cache): normalize restored paths on Windows by @hardfist in https://github.com/web-infra-dev/rspack/pull/15357
###### Refactor 🔨
* refactor(split-chunks): skip disjoint group cleanup by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15318
###### Document 📖
* docs: 2.2.0 release blog by @stormslowly in https://github.com/web-infra-dev/rspack/pull/15240
* docs: clarify incremental mode requirement by @hardfist in https://github.com/web-infra-dev/rspack/pull/15339
* docs: move LLMs UI to page outline by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15341
* docs: reorganize plugin documentation by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15347
###### Other Changes
* chore(deps): migrate to @rstackjs/doc-ui v1.14.9 by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15349

##### New Contributors
* @CoderSerio made their first contribution in https://github.com/web-infra-dev/rspack/pull/15334

**Full Changelog**: https://github.com/web-infra-dev/rspack/compare/v2.2.0...v2.2.1

### v2.2.0

- Date: 2026-08-26
- Version: v2.2.0
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.2.0
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.2.0

- **added** — Implement generation-based memory cache eviction
- **added** — Add idle cache compaction with interruption handling
- **changed** — Improve unicode handling and support more CSS modules cases, boost performance
- **added** — Integrate module code generation to the new cache
- **added** — Add fine-grained new cache options
- **added** — Add compat-hashed module ids
- **added** — Analyze dynamic imports in Promise.all destructuring
- **added** — Integrate new cache into source map devtool plugin
- **added** — Add compilation.runtimeTemplate
- **added** — Add compact chunk ids
- **added** — Support opt-in per-loader caching
- **changed** — Cache converted module original source
- **changed** — Batch splitChunks JavaScript callbacks
- **changed** — Avoid parsing concatenated module codegen
- **changed** — Preallocate identifier path buffers
- **changed** — Intern ArcPath as a single-allocation prehashed path
- **changed** — Use rayon parallel scheduling for new cache db
- **changed** — Skip the directory walk for glob patterns without metacharacters
- **fixed** — Pass HMR error to Preact refresh recovery handler
- **fixed** — Strip BOM from module content before concatenation in CSS extraction

##### What's Changed

##### 🎉 See [Announcing Rspack 2.2](https://rspack.rs/blog/announcing-2-2) for more details.

###### New Features 🎉
* feat: implement generation-based memory cache eviction by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/15181
* feat: add idle cache compaction with interruption handling by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/15182
* feat(css): improve unicode handling and support more css modules cases, boost performance by @intellild in https://github.com/web-infra-dev/rspack/pull/14809
* feat: integrate module code generation to the new cache by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/15194
* feat(cache): add fine-grained new cache options by @hardfist in https://github.com/web-infra-dev/rspack/pull/15261
* feat(ids): add compat-hashed module ids by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14926
* feat: analyze dynamic imports in Promise.all destructuring by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/15249
* feat: integrate new cache into source map devtool plugin  by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/15269
* feat(core): add compilation.runtimeTemplate by @kakiuwang-ui in https://github.com/web-infra-dev/rspack/pull/15305
* feat(ids): add compact chunk ids by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14959
* feat(loader): support opt-in per-loader caching by @intellild in https://github.com/web-infra-dev/rspack/pull/15236
###### Performance 🚀
* perf(binding): cache converted module original source by @SyMind in https://github.com/web-infra-dev/rspack/pull/15174
* perf: batch splitChunks JavaScript callbacks by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/15147
* perf(binding): exclude test loaders from release builds by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15209
* perf(binding): exclude perfetto from release WASI builds by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15221
* perf(binding): align release WASI optimizations by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15227
* perf(binding): optimize React Compiler crates for size by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15230
* perf: avoid parsing concatenated module codegen by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14852
* perf: preallocate identifier path buffers by @intellild in https://github.com/web-infra-dev/rspack/pull/15220
* perf(paths): intern ArcPath as a single-allocation prehashed path by @stormslowly in https://github.com/web-infra-dev/rspack/pull/15205
* perf: use rayon parallel scheduling for new cache db by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/15251
* perf(core): skip the directory walk for glob patterns without metacharacters by @lazerg in https://github.com/web-infra-dev/rspack/pull/15297
* perf(split-chunks): skip single-chunk used exports grouping by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15312
* perf(core): precompile filename templates cache by @intellild in https://github.com/web-infra-dev/rspack/pull/15195
###### Bug Fixes 🐞
* fix: pass HMR error to Preact refresh recovery handler by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15179
* fix(cache): limit shutdown compaction to a single pass by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/15188
* fix(types): add missing stats fields by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15206
* fix(css-extract): strip BOM from module content before concatenation by @doxxx93 in https://github.com/web-infra-dev/rspack/pull/15169
* fix(core): decouple incremental artifacts from cache! by @hardfist in https://github.com/web-infra-dev/rspack/pull/15229
* fix(asset): preserve ESM imports in module output for "preserve" importMode by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/15165
* fix(css): CSS module dashed identifier a

_[Truncated at 4000 characters — full notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.2.0]_

### v2.1.10

- Date: 2026-08-13
- Version: v2.1.10
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.10
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.1.10

- **removed** — Remove noisy import.meta warnings for unknown properties
- **added** — Expose ExternalModule chunkCondition hook
- **added** — Implement new cache system
- **added** — Integrate new cache to minimize cache
- **fixed** — Process remaining module copies at lower priorities in split-chunks
- **fixed** — Allow scope hoisting for new URL targets in new-url-relative mode in esm_library
- **fixed** — Bump rkyv to 0.8.18 to fix RUSTSEC-2026-0233, RUSTSEC-2026-0234, and RUSTSEC-2026-0235
- **fixed** — Normalize string context from loaded config in CLI
- **fixed** — Share ExternalModule hooks across core instances
- **fixed** — Fix new cache compile failure on 32-bit platforms

> [!NOTE]
> **Removed noisy `import.meta` warnings**
>
> Rspack 2.1.9 introduced warnings for unknown `import.meta` properties. Because they proved overly noisy in real-world builds, Rspack 2.1.10 removes them to reduce unnecessary diagnostics for custom or runtime-specific extensions. See #15166 for detail.

##### What's Changed
###### New Features 🎉
* feat: expose ExternalModule chunkCondition hook by @intellild in https://github.com/web-infra-dev/rspack/pull/15093
* feat: new cache system by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/15110
* feat: integrate new cache to minimize cache by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/15150
###### Bug Fixes 🐞
* fix(split-chunks): process remaining module copies at lower priorities by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/15079
* fix(esm_library): allow scope hoisting for `new URL` targets in new-url-relative mode by @elecmonkey in https://github.com/web-infra-dev/rspack/pull/15155
* fix(deps): bump rkyv to 0.8.18 (fixes RUSTSEC-2026-0233/0234/0235) by @jesses-canva in https://github.com/web-infra-dev/rspack/pull/15156
* fix(cli): normalize string `context` from loaded config by @stormslowly in https://github.com/web-infra-dev/rspack/pull/15162
* fix: share ExternalModule hooks across core instances by @intellild in https://github.com/web-infra-dev/rspack/pull/15163
* fix: new cache compile failed on 32-bit platforms by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/15175
###### Refactor 🔨
* refactor: migrate rspack_dojang into monorepo by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15124
###### Document 📖
* docs: document Baseline queries by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15167
* docs: document __webpack_layer__ by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15170
###### Other Changes
* chore: clean up CODEOWNERS by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15159
* chore(deps): update rstack to v0.5.1 by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15160
* test: add CSS benchmarks by @intellild in https://github.com/web-infra-dev/rspack/pull/15106
* revert: unknown import.meta property warnings by @intellild in https://github.com/web-infra-dev/rspack/pull/15166
* test: add Baseline query coverage by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15168
* chore(ci): drop binary size limit from required check by @stormslowly in https://github.com/web-infra-dev/rspack/pull/15171

##### New Contributors
* @jesses-canva made their first contribution in https://github.com/web-infra-dev/rspack/pull/15156

**Full Changelog**: https://github.com/web-infra-dev/rspack/compare/v2.1.9...v2.1.10

### v2.1.9

- Date: 2026-08-11
- Version: v2.1.9
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.9
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.1.9

- **added** — Warn on unknown import.meta properties
- **added** — Add builds for binding-linux-(ppc64,s390x)-gnu
- **added** — Support --no-git flag in create-rspack
- **added** — Support caseSensitive option in import.meta.glob
- **changed** — Cache and order static patterns in copy-plugin
- **changed** — Limit incremental HMR asset processing
- **changed** — Avoid unnecessary call wrappers for runtime helpers
- **changed** — Cache compilation assets proxy
- **changed** — Avoid copying aligned archive buffers in cache
- **changed** — Avoid duplicating export dependency data in JSON
- **changed** — Improve source map convert performance
- **fixed** — Improve circular real content hash error diagnostics
- **fixed** — Keep compilation dependency iterators disjoint
- **fixed** — Align cache version semantics with webpack
- **fixed** — Preserve ignored URL when import.meta.url is disabled
- **fixed** — Avoid runtime lock deadlock in napi
- **fixed** — Match compiler prefixes exactly in lazy compilation
- **fixed** — Avoid injecting shared providers into worker entrypoints in Module Federation
- **fixed** — Handle optional chains in member hook traversal
- **fixed** — Support loader context APIs in parallel loaders

##### What's Changed
###### New Features 🎉
* feat: warn on unknown import.meta properties by @intellild in https://github.com/web-infra-dev/rspack/pull/14785
* feat: add builds for binding-linux-(ppc64,s390x)-gnu by @logonoff in https://github.com/web-infra-dev/rspack/pull/14962
* feat(create-rspack): support --no-git by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15133
* feat: support caseSensitive in import.meta.glob by @intellild in https://github.com/web-infra-dev/rspack/pull/14811
###### Performance 🚀
* perf(copy-plugin): cache and order static patterns by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/15051
* perf: limit incremental HMR asset processing by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/15063
* perf: avoid unnecessary call wrappers for runtime helpers by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15065
* perf: cache compilation assets proxy by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15070
* perf(cache): avoid copying aligned archive buffers by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/15024
* perf(json): avoid duplicating export dependency data by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/15023
* perf: improve source map convert performance by @intellild in https://github.com/web-infra-dev/rspack/pull/15138
###### Bug Fixes 🐞
* fix: improve circular real content hash error diagnostics by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14973
* fix: keep compilation dependency iterators disjoint by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/15072
* fix(cache): align cache version semantics with webpack by @hardfist in https://github.com/web-infra-dev/rspack/pull/15000
* fix: preserve ignored URL when import.meta.url is disabled by @intellild in https://github.com/web-infra-dev/rspack/pull/15075
* fix(napi): avoid runtime lock deadlock by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15077
* fix(lazy): match compiler prefixes exactly by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/15073
* fix(mf): avoid injecting shared providers into worker entrypoints by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15059
* fix: handle optional chains in member hook traversal by @zhsama in https://github.com/web-infra-dev/rspack/pull/15076
* fix: support loader context APIs in parallel loaders by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15092
* fix: warn on invalid chunk names by @HashemKhalifa in https://github.com/web-infra-dev/rspack/pull/14854
* fix: preserve imports in impure class expressions by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15098
* fix: preserve worker entrypoints when async chunks are disabled by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15096
* fix: align loader context docs and types with implementation by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15095
* fix(rstest): make import.meta.rstest resolver optional by @9aoy in https://github.com/web-infra-dev/rspack/pull/15097
* fix: handle context changes in import.meta.glob hooks by @intellild in https://github.com/web-infra-dev/rspack/pull/14897
* fix(types): align public API docs with declarations by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15107
* fix: preserve worker entrypoints during module deduplication by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14902
* fix(cli): restore config key completions in defineConfig by @upupming in https://github.com/web-infra-dev/rspack/pull/15140
* fix: deduplicate parse errors by source range by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15146
###### Refactor 🔨
* refactor: extract parser options with AstObject derive by @intellild in https://github.com/web-infra-dev/rspack/pull/14886
* refactor: remove dead Rust code with Hawk by

_[Truncated at 4000 characters — full notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.9]_

### v2.1.8

- Date: 2026-08-04
- Version: v2.1.8
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.8
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.1.8

- **added** — Support cache.name and cache.storage.location options to align with webpack's persistent cache semantics
- **added** — Emit css.c and css.r in the hot-update manifest for precise CSS updates
- **added** — Inject module origin for import.meta.rstest
- **changed** — cache.storage.directory is now the base directory, with final cache location defaulting to <directory>/<cache.name>
- **fixed** — Preserve entry dependency identity in binding
- **fixed** — Preserve Lightning CSS license comments in loader
- **fixed** — Add missing CJS interop runtime requirement for ESM
- **fixed** — Avoid dead require bootstrap in runtime
- **fixed** — Preserve collision-free createRequire imports in runtime
- **fixed** — Clean up compilation-scoped plugin caches
- **fixed** — Hoist test API imports by source order in rstest
- **fixed** — Release custom runtime module generators on close in binding
- **fixed** — Preserve context exports in rspack runtime mode
- **fixed** — Correct full-hash chunk filenames in runtime
- **fixed** — Use POSIX asset keys in copy-plugin
- **fixed** — Remove redundant runtime declarations
- **fixed** — Handle SharedWorker string name option
- **fixed** — Avoid runtime scope conflicts in module factories
- **fixed** — Preserve direct exports bindings

##### Highlights

###### Persistent cache storage options now align with webpack

Rspack now supports `cache.name` and `cache.storage.location`, aligning with webpack's persistent cache semantics. `cache.storage.directory` is now the base directory, while the final cache location defaults to `<directory>/<cache.name>`. Default cache paths remain unchanged.

If you previously used `storage.directory` as the exact cache path, migrate it to `storage.location`. Existing cache data is not migrated automatically.

```diff
cache: {
  type: 'persistent',
  storage: {
    type: 'filesystem',
-   directory: '/custom/cache',
+   location: '/custom/cache',
  },
}
```

##### What's Changed
###### New Features 🎉
* feat(rstest): inject module origin for import.meta.rstest by @9aoy in https://github.com/web-infra-dev/rspack/pull/15006
* feat: align persistent cache storage options with webpack by @hardfist in https://github.com/web-infra-dev/rspack/pull/15049
* feat(hmr): emit css.c / css.r in the hot-update manifest for precise CSS updates by @stormslowly in https://github.com/web-infra-dev/rspack/pull/14682
###### Performance 🚀
* perf: avoid cloning Lightning CSS stylesheet AST by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14982
* perf: avoid cloning CSS module lists during ordering by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14984
* perf(copy): offload asset reads by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15022
* perf: share source across linking diagnostics by @hardfist in https://github.com/web-infra-dev/rspack/pull/15048
###### Bug Fixes 🐞
* fix(binding): preserve entry dependency identity by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/14964
* fix(loader): preserve lightningcss license comments by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14980
* fix(esm): add missing CJS interop runtime requirement by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14978
* fix(runtime): avoid dead require bootstrap by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14991
* fix(runtime): preserve collision-free createRequire imports by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14994
* fix: clean up compilation-scoped plugin caches by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/14999
* fix(rstest): hoist test API imports by source order by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/15007
* fix(binding): release custom runtime module generators on close by @SyMind in https://github.com/web-infra-dev/rspack/pull/15008
* fix: preserve context exports in rspack runtime mode by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15001
* fix(runtime): correct full-hash chunk filenames by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/14997
* fix(copy-plugin): use POSIX asset keys by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/15015
* fix(runtime): remove redundant runtime declarations by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14993
* fix(worker): handle SharedWorker string name option by @elecmonkey in https://github.com/web-infra-dev/rspack/pull/15012
* fix: avoid runtime scope conflicts in module factories by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15002
* fix: preserve direct exports bindings by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15003
* fix(dll): serialize buildMeta.defaultObject as redirect-warn by @tusharsingh308 in https://github.com/web-infra-dev/rspack/pull/15016
* fix(json): match webpack source map behavior for generated modules by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/15014
* fix: keep property name when global is used in object shorthand by @lazerg in https://github.com/web-infra-dev/rspack/pull/15054
* fix: prevent compiler abort for exported rspackRequire by @LingyuCoder i

_[Truncated at 4000 characters — full notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.8]_

### v2.1.7

- Date: 2026-07-29
- Version: v2.1.7
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.7
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.1.7

- **removed** — Remove the import.meta.env experimental feature that was introduced in Rspack 2.1.6
- **changed** — Share source code across diagnostics to improve performance
- **fixed** — Release module graph connection wrappers

> **Notice:** The `import.meta.env` experimental feature introduced in Rspack 2.1.6 has been removed in Rspack 2.1.7.

##### What's Changed
###### Performance 🚀
* perf: share source code across diagnostics by @hardfist in https://github.com/web-infra-dev/rspack/pull/14967
###### Bug Fixes 🐞
* fix: revert "feat: support import.meta.env" by @intellild in https://github.com/web-infra-dev/rspack/pull/14975
* fix(binding): release module graph connection wrappers by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14965
###### Other Changes
* chore: release version 2.1.6 by @SyMind in https://github.com/web-infra-dev/rspack/pull/14966

**Full Changelog**: https://github.com/web-infra-dev/rspack/compare/v2.1.6...v2.1.7

### v2.1.6

- Date: 2026-07-28
- Version: v2.1.6
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.6
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.1.6

- **added** — Support import.meta.env
- **changed** — Cache module concatenation analysis across roots
- **changed** — Reuse module concatenation search state
- **changed** — Reduce module concatenation hot-path overhead
- **fixed** — Materialize namespace object for concatenated modules
- **fixed** — Parse preserved createRequire arguments
- **fixed** — Invalidate module hashes when assigning deterministic and natural ids
- **fixed** — Disable incremental chunk assets for entry fullhash filenames
- **fixed** — Propagate asset emit errors
- **fixed** — Avoid JavaScript output for URL-only assets
- **fixed** — Avoid worker external facade in bundleless output
- **fixed** — Execute worker entry modules in modern-module output
- **fixed** — Preserve defineConfig inference in CLI
- **fixed** — Preserve structured swc diagnostics in swc-loader
- **fixed** — Respect DllPlugin context for concatenated modules
- **fixed** — Scope maxVersions by compiler using compilerPath in cache

##### What's Changed
###### New Features 🎉
* feat: support import.meta.env by @intellild in https://github.com/web-infra-dev/rspack/pull/14483
###### Performance 🚀
* perf: cache module concatenation analysis across roots by @ScriptedAlchemy in https://github.com/web-infra-dev/rspack/pull/14832
* perf: reuse module concatenation search state by @ScriptedAlchemy in https://github.com/web-infra-dev/rspack/pull/14833
* perf: reduce module concatenation hot-path overhead by @ScriptedAlchemy
 in https://github.com/web-infra-dev/rspack/pull/14834
###### Bug Fixes 🐞
* fix: materialize namespace object for concatenated modules by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14882
* fix: parse preserved createRequire arguments by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14813
* fix: invalidate module hashes when assigning deterministic and natural ids by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14878
* fix: disable incremental chunk assets for entry fullhash filenames by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14890
* fix: propagate asset emit errors by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14891
* fix(asset): avoid JavaScript output for URL-only assets by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14885
* fix(rslib): avoid worker external facade in bundleless output by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14900
* fix: execute worker entry modules in modern-module output by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14876
* fix(cli): preserve defineConfig inference by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14924
* fix(swc-loader): preserve structured swc diagnostics by @SyMind in https://github.com/web-infra-dev/rspack/pull/14921
* fix: respect DllPlugin context for concatenated modules by @hardfist in https://github.com/web-infra-dev/rspack/pull/14923
* fix(ci): resolve the binary-size base for stacked PRs by @stormslowly in https://github.com/web-infra-dev/rspack/pull/14903
* fix(cache): scope maxVersions by compiler using compilerPath by @hardfist in https://github.com/web-infra-dev/rspack/pull/14954
###### Refactor 🔨
* refactor(esm-library): remove redundant module marking by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14875
* refactor(runtime): collect runtime module variables from templates by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14917
* refactor(runtime): simplify modern-module output by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14741
###### Document 📖
* docs: recommend TypeScript 7 for ts-checker-rspack-plugin by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14901
* docs: refresh Rstack slogan by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14928
* docs: mention Vue DevTools integration by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14932
* docs: clarify resolve.modules behavior by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14953
* docs: fix formatting in split-chunks-plugin.mdx by @davidjb in https://github.com/web-infra-dev/rspack/pull/14963
###### Other Changes
* chore(deps): update dependency @module-federation/runtime-tools to v2.8.0 by @renovate[bot] in https://github.com/web-infra-dev/rspack/pull/14848
* chore(deps): update rust crate either to 1.16.0 by @renovate[bot] in https://github.com/web-infra-dev/rspack/pull/14693
* test(module-concat): add concatenation benchmark baselines by @@ScriptedAlchemy in https://github.com/web-infra-dev/rspack/pull/14831
* chore(ci): upload ci-profile binary size from main CI by @stormslowly in https://github.com/web-infra-dev/rspack/pull/14868
* chore(deps): upgrade Rslib to 1.0.0-beta.1 by @Timeless0911 in https://github.com/web-infra-dev/rspack/pull/14925
* chore(deps): update patch npm dependencies by @renovate[bot] in https://github.com/web-infra-dev/rspack/pull/148

_[Truncated at 4000 characters — full notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.6]_

### v2.1.5

- Date: 2026-07-21
- Version: v2.1.5
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.5
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.1.5

- **fixed** — Respect runtime mode in mf identifiers
- **fixed** — Preserve multiple referenced client exports in rsc
- **fixed** — Preserve createRequire().resolve with literal import.meta.url when requireResolve is disabled
- **fixed** — Preserve inline match resource imports in css
- **fixed** — Short-circuit optional import.meta calls
- **fixed** — Preserve exports for dynamic client references in rsc
- **fixed** — Avoid live chunk access when serializing stale stats
- **fixed** — Register hoisted mocks before importActual imports in rstest
- **fixed** — Run FsWatcher on a single owner task to fix concurrent &mut races
- **fixed** — Add module type when options are omitted in module output for worker
- **fixed** — Include output path in chunk render cache keys
- **fixed** — Support real content hash update hooks

##### What's Changed
###### Bug Fixes 🐞
* fix: respect runtime mode in mf identifiers by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14782
* fix(rsc): preserve multiple referenced client exports by @SyMind in https://github.com/web-infra-dev/rspack/pull/14794
* fix: preserve createRequire().resolve with literal import.meta.url when requireResolve is disabled by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14783
* fix(css): preserve inline match resource imports by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14803
* fix: short-circuit optional import.meta calls by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14806
* fix(rsc): preserve exports for dynamic client references by @SyMind in https://github.com/web-infra-dev/rspack/pull/14807
* fix(stats): avoid live chunk access when serializing stale stats by @SyMind in https://github.com/web-infra-dev/rspack/pull/14808
* fix(rstest): register hoisted mocks before importActual imports by @fi3ework in https://github.com/web-infra-dev/rspack/pull/14810
* fix(watcher): run FsWatcher on a single owner task to fix concurrent &mut races by @stormslowly in https://github.com/web-infra-dev/rspack/pull/14829
* fix(worker): add module type when options are omitted in module output by @elecmonkey in https://github.com/web-infra-dev/rspack/pull/14874
* fix: include output path in chunk render cache keys by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14877
* fix: support real content hash update hooks by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14660
###### Refactor 🔨
* refactor(binding): remove compilation pointer from async dependency block by @SyMind in https://github.com/web-infra-dev/rspack/pull/14797
* refactor(core): improve referenced export data struct by @SyMind in https://github.com/web-infra-dev/rspack/pull/14796
###### Other Changes
* chore(skills): add webpack test gap diff script by @intellild in https://github.com/web-infra-dev/rspack/pull/14805
* chore: update Rsdoctor diff action version by @yifancong in https://github.com/web-infra-dev/rspack/pull/14812
* chore(deps): update napi by @renovate[bot] in https://github.com/web-infra-dev/rspack/pull/14837
* chore(deps): update dependency @rslint/core to v0.7.0 by @renovate[bot] in https://github.com/web-infra-dev/rspack/pull/14849
* chore: update simd-json and value-trait to fix stringify issue  for CPUs without AVX/SSE4 capabilities by @intellild in https://github.com/web-infra-dev/rspack/pull/14828
* chore: add rspack perf codspeed goal skill by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14550

**Full Changelog**: https://github.com/web-infra-dev/rspack/compare/v2.1.4...v2.1.5

### v2.1.4

- Date: 2026-07-14
- Version: v2.1.4
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.4
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.1.4

- **added** — Support fine-grained import.meta parser options allowing each known import.meta property to be configured independently
- **added** — Support static worker new URL output with module.parser.javascript.worker accepting an object form with alias and url
- **added** — Support logical assignment for chunk loading global in runtime
- **changed** — Enable parallel wasmtime compilation for improved performance
- **changed** — Optimize ESM linking passes
- **fixed** — Clean up runtime global rendering
- **fixed** — Clean up chunk wrappers when compiler is garbage collected
- **fixed** — Enable runtime mode ESM context imports
- **fixed** — Revert Module Federation runtime identifiers
- **fixed** — Include paths in native filesystem errors
- **fixed** — Respect RSPACK_BINDING in loader workers
- **fixed** — Invalidate the target compiler for lazy compilation
- **changed** — Deduplicate repeated dynamic reexport code
- **changed** — Reduce hook macro expansion size and optimize performance

##### Highlights

###### Fine-grained `import.meta` parser options

`module.parser.javascript.importMeta` now accepts an object so each known `import.meta` property can be configured independently, on top of the existing `true` / `false` / `'preserve-unknown'` values. Properties set to `false` are preserved for runtime evaluation, omitted properties keep their default behavior, and unknown properties are preserved. Both webpack-compatible keys (`dirname`, `filename`, `main`, `url`, `webpack`, `webpackContext`) and Rspack-specific keys (`rspackHash`, `rspackPublicPath`, `glob`, ...) are supported.

```js title="rspack.config.mjs"
export default {
  module: {
    parser: {
      javascript: {
        importMeta: {
          // keep `import.meta.url` for runtime evaluation
          url: false,
          // keep the compile-time replacement of `import.meta.webpack`
          webpack: true,
        },
      },
    },
  },
};
```

###### Static worker URL output

`module.parser.javascript.worker` now accepts an object form with `alias` and `url`, alongside the existing `boolean` and `string[]` forms. With `url: 'new-url-relative'` and `output.module` enabled, Rspack emits a static `new URL()` expression for `new Worker(new URL(..., import.meta.url))` instead of runtime code, honoring `output.publicPath` and `output.workerPublicPath`.

```js title="rspack.config.mjs"
export default {
  output: {
    module: true,
    chunkFilename: '[name].bundle.js',
  },
  module: {
    parser: {
      javascript: {
        worker: {
          url: 'new-url-relative',
        },
      },
    },
  },
};
```

```js
new Worker(new URL('./worker.js', import.meta.url));

// would become 👇
new Worker(new URL('./worker.bundle.js', import.meta.url));
```

##### What's Changed
###### New Features 🎉
* feat(runtime): support logical assignment for chunk loading global by @fireairforce in https://github.com/web-infra-dev/rspack/pull/14655
* feat: support persistent cache for module hashes by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14717
* feat: support static worker new URL output by @intellild in https://github.com/web-infra-dev/rspack/pull/14728
* feat: support fine-grained import.meta parser options by @intellild in https://github.com/web-infra-dev/rspack/pull/14631
###### Performance 🚀
* perf(swc): enable parallel wasmtime compilation by @hardfist in https://github.com/web-infra-dev/rspack/pull/14716
* perf(hook): reduce hook macro expansion size and optimize performance by @intellild in https://github.com/web-infra-dev/rspack/pull/14633
* perf: optimize ESM linking passes by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14758
* perf: deduplicate repeated dynamic reexport code by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14748
###### Bug Fixes 🐞
* fix(ci): pick binary-size base by build-triggering commit by @stormslowly in https://github.com/web-infra-dev/rspack/pull/14715
* fix: clean up runtime global rendering by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14735
* fix(binding): clean up chunk wrappers when compiler is GCed by @SyMind in https://github.com/web-infra-dev/rspack/pull/14736
* fix: enable runtime mode esm context imports by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14740
* fix: revert Module Federation runtime identifiers by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14761
* fix(fs): include paths in native filesystem errors by @hardfist in https://github.com/web-infra-dev/rspack/pull/14760
* fix: respect RSPACK_BINDING in loader workers by @hardfist in https://github.com/web-infra-dev/rspack/pull/14775
* fix: invalidate the target compiler for lazy compilation by @Kanary-channelio in https://github.com/web-infra-dev/rspack/pull/14781
###### Refactor 🔨
* refactor(binding): avoid unsafe compilation access in chunk and module by @SyMind in https://github.com/web-infra-

_[Truncated at 4000 characters — full notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.4]_

### v2.1.3

- Date: 2026-07-07
- Version: v2.1.3
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.3
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.1.3

- **added** — Add name/value accessors to ESMExportSpecifierDependency
- **added** — Expose the real Chunk instance to filename functions
- **changed** — Erase js tap storage types to reduce binary size
- **changed** — Build rspack source maps directly
- **changed** — Optimize module hash creation
- **changed** — Pre-size per-module maps and vecs in mangle_exports
- **fixed** — Update runtime context during hot updates
- **fixed** — Inline-value check must precede deferred pure checks in concatenation
- **fixed** — Skip re-applying unchanged CSS during HMR
- **fixed** — Preserve asset bytes for binary files
- **fixed** — Dedupe link HMR stylesheets in CSS
- **fixed** — Emit manifest assets with forward-slash names on Windows
- **fixed** — Unwrap dynamic source-phase imports in modern-module output
- **fixed** — Preserve static source-phase external bindings in esm_library
- **fixed** — Distinguish css wrapper sourcemap names
- **fixed** — Keep path data chunk compatible in binding

##### What's Changed
###### New Features 🎉
* feat: add name/value accessors to ESMExportSpecifierDependency ([#14641](https://github.com/web-infra-dev/rspack/pull/14641) by @yashwanth195)
* feat(core): expose the real Chunk instance to filename functions ([#14549](https://github.com/web-infra-dev/rspack/pull/14549) by @JSerFeng)
###### Performance 🚀
* perf: erase js tap storage types to reduce binary size ([#14636](https://github.com/web-infra-dev/rspack/pull/14636) by @intellild)
* perf: build rspack source maps directly ([#14621](https://github.com/web-infra-dev/rspack/pull/14621) by @intellild)
* perf: optimize module hash creation ([#14654](https://github.com/web-infra-dev/rspack/pull/14654) by @LingyuCoder)
* perf(mangle_exports): pre-size per-module maps and vecs ([#14705](https://github.com/web-infra-dev/rspack/pull/14705) by @stormslowly)
###### Bug Fixes 🐞
* fix: update runtime context during hot updates ([#14644](https://github.com/web-infra-dev/rspack/pull/14644) by @LingyuCoder)
* fix(concatenation): inline-value check must precede deferred pure checks ([#14663](https://github.com/web-infra-dev/rspack/pull/14663) by @guru-irl)
* fix(css): skip re-applying unchanged CSS during HMR ([#14580](https://github.com/web-infra-dev/rspack/pull/14580) by @stormslowly)
* fix(asset): preserve asset bytes for binary files ([#14670](https://github.com/web-infra-dev/rspack/pull/14670) by @hardfist)
* fix(css): dedupe link HMR stylesheets ([#14666](https://github.com/web-infra-dev/rspack/pull/14666) by @intellild)
* fix(mf): emit manifest assets with forward-slash names on Windows ([#14667](https://github.com/web-infra-dev/rspack/pull/14667) by @johncarmack1984)
* fix(esm_library): unwrap dynamic source-phase imports in modern-module output ([#14673](https://github.com/web-infra-dev/rspack/pull/14673) by @elecmonkey)
* fix(esm_library): preserve static source-phase external bindings ([#14674](https://github.com/web-infra-dev/rspack/pull/14674) by @elecmonkey)
* fix(bench): pin glibc string-func dispatch to stabilize simulation benches ([#14704](https://github.com/web-infra-dev/rspack/pull/14704) by @stormslowly)
* fix(css): distinguish css wrapper sourcemap names ([#14675](https://github.com/web-infra-dev/rspack/pull/14675) by @intellild)
* fix(binding): keep path data chunk compatible ([#14698](https://github.com/web-infra-dev/rspack/pull/14698) by @JSerFeng)
###### Refactor 🔨
* refactor: use rspack runtime module prefix ([#14630](https://github.com/web-infra-dev/rspack/pull/14630) by @LingyuCoder)
* refactor: split content hash from std Hash ([#14384](https://github.com/web-infra-dev/rspack/pull/14384) by @intellild)
* refactor: rename hash objects for clearer semantics ([#14642](https://github.com/web-infra-dev/rspack/pull/14642) by @intellild)
* refactor: use rspack scheme for source map defaults ([#14635](https://github.com/web-infra-dev/rspack/pull/14635) by @LingyuCoder)
* refactor(runtime): collect runtime writes from ejs define ([#14651](https://github.com/web-infra-dev/rspack/pull/14651) by @LingyuCoder)
* refactor(napi): remove napi tokio runtime dependency ([#14696](https://github.com/web-infra-dev/rspack/pull/14696) by @hardfist)
###### Other Changes
* test: register misc bundle benchmark ([#14632](https://github.com/web-infra-dev/rspack/pull/14632) by @hardfist)
* chore(release): stream per-package publish output ([#14585](https://github.com/web-infra-dev/rspack/pull/14585) by @stormslowly)
* chore(deps): update github-actions ([#14638](https://github.com/web-infra-dev/rspack/pull/14638) by @renovate[bot])
* ci: replace rust-cache with sccache (TOS) on self-hosted runners ([#14567](https://github.com/web-infra-dev/rspack/pull/14567) by @stormslowly)
* ci: reset lynx-infra/cache action to d6bd70b ([#14646](https://github.com/web-infra-dev/rspack/pull/14646) by @stormslowly)
* chore(ci): run binary size limit on linux mini runner ([#14648](https://github.com/web-infra-dev/rspack/pul

_[Truncated at 4000 characters — full notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.3]_

### v2.1.2

- Date: 2026-06-30
- Version: v2.1.2
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.2
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.1.2

- **added** — Support `import.meta` style module variables including `import.meta.rspackPublicPath`, `import.meta.rspackBaseUri`, `import.meta.rspackShareScopes`, `import.meta.rspackInitSharing`, `import.meta.rspackNonce`, `import.meta.rspackUniqueId`, `import.meta.rspackVersion`, and `import.meta.rspackHash`
- **changed** — Deduplicate runtime module macro glue for improved performance
- **changed** — Avoid cloning side effects artifact in module concatenation
- **fixed** — Inject runtime require into browser MF runtime
- **fixed** — Preserve import phase in dynamic import external rendering
- **fixed** — Empty references export for cjs and dynamic import tree shaking

##### What's Changed
##### Highlights 💡

###### Support `import.meta` style module variables

<!-- obsidian --><p>Rspack now exposes more module variables through <code>import.meta</code>, which aligns better with the ESM specification than CommonJS-style injected globals. When authoring ESM modules, <code>import.meta</code> is now the recommended way to access these runtime values.</p>
<p>The newly supported <code>import.meta</code> properties are:</p>

New import.meta API | Existing runtime variable
-- | --
`import.meta.rspackPublicPath` | `__webpack_public_path__`
`import.meta.rspackBaseUri` | `__webpack_base_uri__`
`import.meta.rspackShareScopes` | `__webpack_share_scopes__`
`import.meta.rspackInitSharing` | `__webpack_init_sharing__`
`import.meta.rspackNonce` | `__webpack_nonce__`
`import.meta.rspackUniqueId` | `__rspack_unique_id__`
`import.meta.rspackVersion` | `__rspack_version__`
`import.meta.rspackHash` | `__webpack_hash__`



###### New Features 🎉
* feat: support `import.meta` style module variables ([#14539](https://github.com/web-infra-dev/rspack/pull/14539) by @LingyuCoder)
###### Performance 🚀
* perf: deduplicate runtime module macro glue ([#14620](https://github.com/web-infra-dev/rspack/pull/14620) by @intellild)
* perf: avoid cloning side effects artifact in module concatenation ([#14622](https://github.com/web-infra-dev/rspack/pull/14622) by @hardfist)
###### Bug Fixes 🐞
* fix(browser): inject runtime require into browser MF runtime ([#14590](https://github.com/web-infra-dev/rspack/pull/14590) by @CPunisher)
* fix(ci): build wasm in release debug so the wasm binding gets published ([#14614](https://github.com/web-infra-dev/rspack/pull/14614) by @stormslowly)
* fix(rslib): preserve import phase in dynamic import external rendering ([#14615](https://github.com/web-infra-dev/rspack/pull/14615) by @elecmonkey)
* fix: empty references export for cjs and dynamic import tree shaking ([#14629](https://github.com/web-infra-dev/rspack/pull/14629) by @ahabhgk)
###### Document 📖
* docs: document asset/resource emit generator option ([#14602](https://github.com/web-infra-dev/rspack/pull/14602) by @chenjiahan)
* docs: document json parser parse option ([#14606](https://github.com/web-infra-dev/rspack/pull/14606) by @chenjiahan)
* docs: document more rule use options ([#14610](https://github.com/web-infra-dev/rspack/pull/14610) by @chenjiahan)
* docs: update module variable docs for import.meta ([#14618](https://github.com/web-infra-dev/rspack/pull/14618) by @LingyuCoder)
* docs: enable Rspress anchor checks ([#14627](https://github.com/web-infra-dev/rspack/pull/14627) by @chenjiahan)
###### Other Changes
* chore(deps): update patch npm dependencies ([#14595](https://github.com/web-infra-dev/rspack/pull/14595) by @renovate[bot])
* chore(deps): update dependency @babel/preset-react to ^7.29.7 ([#14597](https://github.com/web-infra-dev/rspack/pull/14597) by @renovate[bot])
* chore(deps): update dependency @ast-grep/napi to ^0.44.0 ([#14596](https://github.com/web-infra-dev/rspack/pull/14596) by @renovate[bot])
* chore(deps): update dependency @rsbuild/core to v2.1.1 ([#14603](https://github.com/web-infra-dev/rspack/pull/14603) by @renovate[bot])
* chore(deps): update dependency @rspack/dev-server to ^2.1.0 ([#14604](https://github.com/web-infra-dev/rspack/pull/14604) by @renovate[bot])
* chore(deps): update dependency @shikijs/transformers to ^4.3.0 - autoclosed ([#14605](https://github.com/web-infra-dev/rspack/pull/14605) by @renovate[bot])
* chore(deps): update dependency mermaid to ^11.16.0 ([#14607](https://github.com/web-infra-dev/rspack/pull/14607) by @renovate[bot])
* chore(deps): update dependency ts-checker-rspack-plugin to ^1.5.1 ([#14608](https://github.com/web-infra-dev/rspack/pull/14608) by @renovate[bot])
* chore(deps): update dependency @rsbuild/plugin-sass to v2 ([#14609](https://github.com/web-infra-dev/rspack/pull/14609) by @renovate[bot])
* chore: remove o

_[Truncated at 4000 characters — full notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.2]_

### v2.1.1

- Date: 2026-06-27
- Version: v2.1.1
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.1
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.1.1

- **added** — Add dependencyId and loc to export usage edges in rsdoctor
- **changed** — Add persistent cache for SourceMapDevToolPlugin
- **fixed** — Add guard for link.parentNode in css runtime
- **fixed** — Revert cjs export assignment side effects optimization

##### What's Changed

###### New Features 🎉
* feat(rsdoctor): add dependencyId and loc to export usage edges by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14577

###### Performance 🚀

* perf(devtool): add persistent cache for SourceMapDevToolPlugin by @SyMind in https://github.com/web-infra-dev/rspack/pull/14473

###### Bug Fixes 🐞

* fix(css): add guard for link.parentNode in css runtime by @BeiyanYunyi in https://github.com/web-infra-dev/rspack/pull/14566
* fix: revert cjs export assignment side effects optimization by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14600

###### Other Changes

* docs: v2.1 release blog by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14527
* refactor(runtime): structure runtime requirements by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14574
* chore(deps): update dependency @rslint/core to v0.6.3 by @renovate[bot] in https://github.com/web-infra-dev/rspack/pull/14594
* chore(deps): update dependency @module-federation/runtime-tools to v2.6.0 by @renovate[bot] in https://github.com/web-infra-dev/rspack/pull/14598

##### New Contributors
* @BeiyanYunyi made their first contribution in https://github.com/web-infra-dev/rspack/pull/14566

**Full Changelog**: https://github.com/web-infra-dev/rspack/compare/v2.1.0...v2.1.1

### v2.1.0

- Date: 2026-06-26
- Version: v2.1.0
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.0
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.1.0

- **added** — Expose module error JS API
- **added** — Log persistent cache read and write timings
- **added** — Expose getProvidedExports() to JS API
- **added** — Support drop inactive branch dependencies for member expressions
- **added** — Introduce experimental.runtimeMode
- **added** — Support branch guarded export presence for `in` on ESM imports
- **added** — Bump swc to support react compiler
- **added** — Expose export usage graph to rsdoctor
- **added** — Add maxAge and maxGenerations for persistent cache cleanup
- **added** — Support riscv64 targets
- **changed** — Enable pureFunctions by default
- **changed** — Make persistent cache max generations default to 3
- **changed** — Rename persistent cache maxGenerations to maxVersions
- **changed** — Harden persistent cache version cleanup with typed version
- **changed** — Make stale version cleanup fire-and-forget
- **fixed** — Preserve inline source content for transform sourcemaps
- **fixed** — Remove webpackSource and webpackDefer magic comments
- **fixed** — Apply global overrideStrict for ContextModule
- **fixed** — Filter ignored-subtree events that emit a spurious folder change in watcher
- **fixed** — Handle nested pure function calls in tree-shaking

##### What's Changed
#####  🎉 See [Announcing Rspack 2.1](https://rspack.rs/blog/announcing-2-1) for more details.
###### New Features 🎉
* feat: expose module error JS API by @SyMind in https://github.com/web-infra-dev/rspack/pull/14351
* feat(cache): log persistent cache read and write timings by @hardfist in https://github.com/web-infra-dev/rspack/pull/14314
* feat(module_graph): expose `getProvidedExports()` to JS API by @logonoff in https://github.com/web-infra-dev/rspack/pull/14349
* feat: support drop inactive branch dependencies for member expr by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14382
* feat(runtime): introduce experimental.runtimeMode by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14254
* feat: support branch guarded export presence for `in` on ESM imports by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14426
* feat: bump swc to support react compiler by @CPunisher in https://github.com/web-infra-dev/rspack/pull/14435
* feat(runtime): runtime internals of rspack runtime mode by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14427
* feat(rsdoctor): expose export usage graph by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14291
* feat: enable pureFunctions by default by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14465
* feat(cache): add maxAge and maxGenerations for persistent cache cleanup by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/14296
* feat: make persistent cache max generations default to 3 by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14534
* feat: rename persistent cache `maxGenerations` to `maxVersions` by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14545
* feat: harden persistent cache version cleanup with typed version by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14552
* feat: support riscv64 targets by @swwind in https://github.com/web-infra-dev/rspack/pull/14447
* feat(cache): make stale version cleanup fire-and-forget by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14564
###### Performance 🚀
* perf: remove serde json by @SyMind in https://github.com/web-infra-dev/rspack/pull/14272
* perf: use mask intersects instead of flag iteration for scope globals by @stormslowly in https://github.com/web-infra-dev/rspack/pull/14353
* perf: add ASCII fast path for dependency location column computation by @stormslowly in https://github.com/web-infra-dev/rspack/pull/14355
* perf: force DFA automaton for real content hash scanning by @stormslowly in https://github.com/web-infra-dev/rspack/pull/14356
* perf(core): reduce memcpy overhead by @hardfist in https://github.com/web-infra-dev/rspack/pull/14381
* perf: reduce flag dependency usage key allocations by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14417
* perf: reduce build chunk graph preparation work by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14421
* perf(sources): avoid cloning source maps with borrowed fields by @SyMind in https://github.com/web-infra-dev/rspack/pull/14380
* perf: optimize module concatenation traversal by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14422
* perf(loader-runner): cache esm loader imports by @hardfist in https://github.com/web-infra-dev/rspack/pull/14434
* perf(core): optimize resource parsing by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14456
* perf(ci): drop redundant cargo check from rust CI by @stormslowly in https://github.com/web-infra-dev/rspack/pull/14461
* perf: avoid JavaScriptTracer overhead when tracing is disabled by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14468
* perf(loader-runner): reduce loader object construction overhead by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14477
* perf: optimize compilation entrypoints getter by @chenjiahan in https://github.com/web-infra-dev/rspack/pull/14485
* perf: redu

_[Truncated at 4000 characters — full notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.0]_

### v2.1.0-beta.0

- Date: 2026-06-18
- Version: v2.1.0-beta.0
- Original notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.0-beta.0
- Permalink: https://whatsnew.fyi/product/rspack/releases/v2.1.0-beta.0

- **added** — Support React Compiler in builtin:swc-loader
- **added** — Expose module error JS API
- **added** — Log persistent cache read and write timings
- **added** — Expose getProvidedExports() to JS API
- **added** — Support drop inactive branch dependencies for member expr
- **added** — Introduce experimental.runtimeMode
- **added** — Support branch guarded export presence for in on ESM imports
- **added** — Add maxAge and maxGenerations for persistent cache cleanup
- **changed** — Enable side-effect-free function analysis by default in production builds
- **changed** — Bump swc to support react compiler
- **fixed** — Preserve inline source content for transform sourcemaps
- **fixed** — Remove webpackSource and webpackDefer magic comments
- **fixed** — Apply global overrideStrict for ContextModule
- **fixed** — Filter ignored-subtree events that emit a spurious folder change
- **fixed** — Use ChunkWithSizeInfo delimiter in maxInitialSize chunk naming fallback path
- **fixed** — Wait for in-flight build before closing compiler
- **fixed** — Point wasi-worker-browser export to dist file
- **fixed** — Handle nested pure function calls in tree-shaking
- **fixed** — Cache import.meta filename and dirname outside eval

##### Highlights 💡

###### Support React Compiler in `builtin:swc-loader`

React projects can now use React Compiler directly through Rspack's built-in SWC loader. See the [React Compiler guide](https://rspack.rs/guide/tech/react#using-builtinswc-loader) for details.

```js
export default {
  module: {
    rules: [
      {
        test: /\.[cm]?[jt]sx?$/,
        loader: 'builtin:swc-loader',
        options: {
          jsc: {
            transform: {
              reactCompiler: true,
            },
          },
        },
      },
    ],
  },
};
```

###### Side-effect-free function analysis by default

Rspack's side-effect-free function analysis is now enabled by default in production builds. It can detect pure function calls through the `#__NO_SIDE_EFFECTS__` notation and `pureFunctions` configuration, including exported functions across module boundaries. When the returned value is unused, Rspack can remove the call more reliably and improve tree shaking results without extra configuration. See [`experiments.pureFunctions`](https://rspack.rs/config/experiments#experimentspurefunctions) for details.

```js
// lib.js
/*@__NO_SIDE_EFFECTS__*/ 
export function call() {
  console.log('hi')
}

// barrel.js
import { call } from './lib'

const value = call()

// if value is unused, call can be removed
export { value }
```

<img width="873" height="479" alt="image" src="https://github.com/user-attachments/assets/44b3e233-18cc-4be0-b3b1-a1697c649424" />

##### What's Changed
###### New Features 🎉
* feat: expose module error JS API by @SyMind in https://github.com/web-infra-dev/rspack/pull/14351
* feat(cache): log persistent cache read and write timings by @hardfist in https://github.com/web-infra-dev/rspack/pull/14314
* feat(module_graph): expose `getProvidedExports()` to JS API by @logonoff in https://github.com/web-infra-dev/rspack/pull/14349
* feat: support drop inactive branch dependencies for member expr by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14382
* feat(runtime): introduce experimental.runtimeMode by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14254
* feat: support branch guarded export presence for `in` on ESM imports by @ahabhgk in https://github.com/web-infra-dev/rspack/pull/14426
* feat: bump swc to support react compiler by @CPunisher in https://github.com/web-infra-dev/rspack/pull/14435
* feat(runtime): runtime internals of rspack runtime mode by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14427
* feat(rsdoctor): expose export usage graph by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14291
* feat: enable pureFunctions by default by @JSerFeng in https://github.com/web-infra-dev/rspack/pull/14465
* feat(cache): add maxAge and maxGenerations for persistent cache cleanup by @matthewdavis-oai in https://github.com/web-infra-dev/rspack/pull/14296
###### Performance 🚀
* perf: remove serde json by @SyMind in https://github.com/web-infra-dev/rspack/pull/14272
* perf: use mask intersects instead of flag iteration for scope globals by @stormslowly in https://github.com/web-infra-dev/rspack/pull/14353
* perf: add ASCII fast path for dependency location column computation by @stormslowly in https://github.com/web-infra-dev/rspack/pull/14355
* perf: force DFA automaton for real content hash scanning by @stormslowly in https://github.com/web-infra-dev/rspack/pull/14356
* perf(core): reduce memcpy overhead by @hardfist in https://github.com/web-infra-dev/rspack/pull/14381
* perf: reduce flag dependency usage key allocations by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14417
* perf: reduce build chunk graph preparation work by @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/14421
* perf(sources): avoid cloning source maps with borrowed fields by @SyMind in https://github.com/web-infra-dev/rspack/pull/14380
* perf: optimize module concatenation traversal by @Lingy

_[Truncated at 4000 characters — full notes: https://github.com/web-infra-dev/rspack/releases/tag/v2.1.0-beta.0]_