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v2.3.0-beta.1 Pre-release

Pre-release

intellild released this 22 Oct 09:24

v2.3.0-beta.1

cdb1996

What's Changed

Breaking Changes 🍭

Thefilter.code loader option (introduced in 2.3.0-beta.0) has been renamed tocodeFilter . If you are upgrading from 2.3.0-beta.0, replacefilter: { code: ... } withcodeFilter: ... in your loader config. No action is needed if you never usedfilter.code .

// 2.3.0-beta.0
{ loader: 'my-loader', filter: { code: 'customMacro(' } }

// 2.3.0-beta.1
{ loader: 'my-loader', codeFilter: 'customMacro(' }

fix!: rename loader filter.code to codeFilter by @SyMind in #16184

New Features 🎉

feat(create-rspack): display version in startup banner by @chenjiahan in #16167

Performance 🚀

perf(resolver): prefer package directories in node_modules by @stormslowly in #16154

Bug Fixes 🐞

fix: release updated allocative crates to resolve napi feature mismatch by @intellild in #16171
fix(HMR): correct hot updated chunk path resolution in Node.js HMR by @hai-x in #16174
fix(release): synchronize workspace versions and CLI peer dependencies by @intellild in #16181
fix: inherit splitChunks request limits in cache groups by @hai-x in #16191
fix(css): calculate CSS module hashes from graph dependencies by @intellild in #16120

Refactor 🔨

refactor(css): share CSS module graph traversal by @intellild in #16119
refactor(css): query placeholders from compiled templates by @intellild in #16169

Document 📖

docs: clarify loader code filters and add examples by @chenjiahan in #16182

Other Changes

test: stabilize lazy barrel cache restoration by @JSerFeng in #16173

Full Changelog: v2.3.0-beta.0...v2.3.0-beta.1

Contributors

stormslowly, chenjiahan, and 4 other contributors

Assets 2

v2.3.0-beta.0 Pre-release

Pre-release

intellild released this 21 Oct 02:43

v2.3.0-beta.0

6d14f85

Highlights

JavaScript parsing with SWC Next

Rspack now uses SWC Next for JavaScript parsing. This beta also includes follow-up compatibility fixes for block-scoped functions, parser source types, and legacy parser behavior. See #16089.

Content-based loader filtering

The new loader filter.code option accepts a string or regular expression and checks the loader's current input before running its normal transform. Loaders can skip files that do not contain the syntax or markers they need to process, avoiding unnecessary transformation work. For example, a loader that transforms customMacro() calls can use filter: { code: 'customMacro(' } to skip inputs without that marker. Pitch functions are unaffected. See #16073.

Better SplitChunks output

Named cache groups now remove redundant module copies from source chunks connected to the same shared chunk, reducing duplicate code in affected builds. Rspack also supports splitChunks.minRemainingSize to avoid splits that leave undersized chunks, bringing JavaScript and extracted CSS output closer to webpack. For example, an affected asynchronous CSS import now retains its expected controls.css filename in production. See #16075 and #15594.

Better watcher compatibility

Native and Node watch file systems now expose watchpack-compatible getTimes(), getTimeInfoEntries(), and collectTimeInfoEntries() APIs. With experiments.nativeWatcher, compiler.fileTimestamps, compiler.contextTimestamps, and the watcher's getInfo() now return real timestamp entries, improving compatibility with plugins that rely on watch metadata, such as ts-loader, webpack-virtual-modules, and vue-loader. The Node watcher also merges time-info entries deterministically so directory timestamps are preserved regardless of dependency iteration order. See the WatchFileSystem API documentation, #15754 and #16126.

Memory improvements and diagnostics

Rspack avoids retaining serialized source maps, reducing memory retained by source objects. Source handling also uses a source-wide UTF-16 index and removes its object pool. See #16072 and #16083.

New allocative-based memory diagnostics help identify which Rust data structures retain memory during builds and HMR updates. See the memory diagnostics guide to capture and analyze snapshots.