# rspack v2.1.9

- Product: rspack (https://whatsnew.fyi/product/rspack)
- Vendor: rspack
- 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

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'.

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- **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 module handling
- **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 loading
- **fixed** — Avoid injecting shared providers into worker entrypoints in Module Federation
- **fixed** — Handle optional chains in member hook traversal

##### 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 @LingyuCoder in https://github.com/web-infra-dev/rspack/pull/15051
* perf: limit incremental HMR asset processing by @LingyuCoder 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 @LingyuCoder 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 @LingyuCoder 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 @hardfist in https:

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