stack.pulse
#stacks/rspack/tooling

Rspack release notes, breaking changes, and upgrade notes.

Fast Rust-based web bundler with webpack-compatible API StackPulse turns upstream changelogs into scannable summaries with risky changes, deprecations, migration notes, and source links.

releases
10
breaking
0
security
2
deprecated
1
migrations
2

Get source-linked upgrade notes and occasional sponsor recommendations. No GitHub login required.

what stackpulse tracks

Rspack releases from GitHub

StackPulse watches Rspack release notes and keeps the original source link close to every summary.

upgrade risk

Breaking changes and deprecations

Risky changes are separated from normal feature notes so you can scan upgrade impact before changing production dependencies.

migration notes

Source-backed next steps

Migration steps and recommended actions are only shown when the upstream release notes support them.

# latest_releases

source-backed
v2.1.1mediumfeatureJun 27, 2026

v2.1.1

This release introduces a new feature in rsdoctor, improves performance with persistent cache for SourceMapDevToolPlugin, and includes several bug fixes and dependency updates.

affected

Developers using rsdoctor and SourceMapDevToolPlugin may benefit from the new features and performance improvements.

release_signals
+Added dependencyId and loc to export usage edges in rsdoctor
view source on github->
v2.1.0highfeatureJun 26, 2026

v2.1.0

Rspack 2.1 introduces several new features, including enhanced JS API capabilities, improved persistent cache management, and experimental runtime mode. Performance optimizations and bug fixes are also a significant part of this release.

affected

Developers using Rspack for module bundling and performance optimization will benefit from the new features and improvements.

action

Upgrade to Rspack 2.1 to take advantage of new features and performance improvements.

release_signals
+Expose module error JS API
+Log persistent cache read and write timings
+Expose `getProvidedExports()` to JS API
+Introduce experimental.runtimeMode
+Support riscv64 targets
view source on github->
v2.1.0-rc.0mediumfeaturesecurityJun 23, 2026

v2.1.0-rc.0

This release introduces performance optimizations, bug fixes, and documentation updates. Key changes include making persistent cache max generations default to 3 and multiple performance improvements.

release_signals
!chore(deps): update dependency http-proxy-middleware to v4.1.1 [security]
+feat: make persistent cache max generations default to 3
view source on github->
v2.1.0-beta.0highfeatureJun 18, 2026

v2.1.0-beta.0

This release introduces support for React Compiler in Rspack's built-in SWC loader and enables side-effect-free function analysis by default for improved tree shaking. It also includes numerous performance optimizations and bug fixes.

affected

React developers and users relying on tree shaking optimizations will benefit from this release.

action

Update to v2.1.0-beta.0 to leverage React Compiler support and improved tree shaking.

release_signals
+Support React Compiler in `builtin:swc-loader`
+Side-effect-free function analysis enabled by default
+Expose module error JS API
+Log persistent cache read and write timings
+Introduce experimental.runtimeMode
view source on github->
v1.7.12lowJun 17, 2026

v1.7.12

Minor bug fix release aligning logger timing with webpack phase boundaries, along with documentation and CI updates.

affected

Null

action

Null

view source on github->
v2.0.8mediumfeatureJun 10, 2026

v2.0.8

This release primarily addresses a bug in the JS parser that caused runtime errors and includes minor CI and benchmarking improvements.

affected

Users experiencing runtime errors due to recent JS parser changes are affected.

action

Update to v2.0.8 to resolve runtime errors caused by the JS parser.

view source on github->
v2.0.7criticaldeprecationmigrationfeatureJun 10, 2026

v2.0.7

This release introduces several new features, performance improvements, and bug fixes. However, it has been deprecated due to a critical issue that may generate incorrect build outputs. Users are advised to upgrade to v2.0.8 instead.

affected

Users of v2.0.7 are affected by incorrect build outputs.

action

Upgrade to v2.0.8 immediately.

release_signals
!v2.0.7 has been deprecated due to incorrect build outputs
+Added SyncModuleIdsPlugin
+Supported CSS modules options `container`, `function`, `grid`, and `pure`
+Enabled source phase import for WebAssembly modules
+Implemented granularity-safe native watcher scan
+Improved circular check plugin
migration_steps1 steps
  1. 01Upgrade to v2.0.8 to avoid incorrect build outputs
view source on github->
v2.0.6highfeatureJun 2, 2026

v2.0.6

This release introduces validation for React Server Components boundaries, exposes the `DeterministicModuleIdsPlugin` for better caching control, and improves CSS Modules `composes` cascade order.

affected

Developers using React Server Components, CSS Modules, or requiring deterministic module IDs for caching are affected.

action

Update to v2.0.6 to benefit from the new features and improvements.

release_signals
+Validate `server-only` and `client-only` imports in React Server Components.
+Expose `DeterministicModuleIdsPlugin` for fine-grained module ID control.
+Preserve `composes` cascade order in CSS Modules.
view source on github->
v2.0.5highfeaturesecurityMay 28, 2026

v2.0.5

This release introduces support for `import.meta.glob`, aligning Rspack with Vite and Turbopack, and adds more control over CSS module parsing. Performance improvements and bug fixes are also included.

affected

Developers using Rspack for bundling and CSS module parsing will benefit from new features and performance improvements.

release_signals
!Fix: Block prototype-pollution payloads in --env parsing
+Support for `import.meta.glob` with various options
+More controllable CSS module parsing for `@import`, animations, custom idents, and dashed idents
+Optimized getter generation for const exports
+Inline const for default export
+Performance optimizations across various modules
view source on github->
v2.0.4highmigrationfeatureMay 20, 2026

v2.0.4

This release introduces optimizations for constant inlining, tree-shaking, and CSS Modules, alongside performance improvements and bug fixes. Key highlights include enhanced CSS global module support and configurable CSS Modules local ident options.

affected

Developers using Rspack for bundling and CSS Modules will benefit from improved optimizations and configurability.

release_signals
+Inline const with module declarations for better dead code elimination
+Tree shake namespace default reexport to remove unused exports
+CSS global module type for gradual migration of global CSS
+CSS Modules local ident options for configurable class names
+Circular modules info plugin for better debugging
view source on github->