web-infra-dev/rspack

Fast Rust-based bundler for the web with a modernized webpack API 🦀

Stars: 12.9k
Forks: 854
Open beginner issues: 0
Indexed issues: 117
Avg merge: 20h 48m
Merged PRs (30d): 316

Dominant language: Rust
License: MIT
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

117 open issues indexed

[Bug]: 'please file an issue with panic info and backtrace Open

pending triage

Difficulty 4/5 3-5 days Newbie friendliness 38/100

web-infra-dev/rspack#15781 · Opened Sep 19, 2026
[Bug]: Error when an HTML-comment is above DOCTYPE Open

web-infra-dev/rspack#15773 · 1 assignee · Opened Sep 18, 2026
[Bug]: an entry that lists a stylesheet next to a script calls a module the bundle no longer defines (2.2.4+) Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

web-infra-dev/rspack#15766 · Opened Sep 18, 2026
[Bug]: tsconfig `extends` through a symlinked node_modules package fails to resolve (pnpm) Open

web-infra-dev/rspack#15717 · 1 assignee · Opened Sep 16, 2026
[Feature]: reuse compilation dependency snapshots with mutation-safe invalidation Open

web-infra-dev/rspack#15704 · 1 assignee · Opened Sep 15, 2026
[Feature]: Warn when MultiCompiler emits conflicting assets to the same output file Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

web-infra-dev/rspack#15697 · Opened Sep 15, 2026
[Bug]: Panic occurred at runtime. Open

web-infra-dev/rspack#15695 · 4 comments · 1 assignee · Opened Sep 15, 2026
[Bug]: MultiCompiler can publish done while a child has restarted without another invalid hook Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

web-infra-dev/rspack#15682 · Opened Sep 15, 2026
[Bug]: nativeWatcher emits late invalid hooks followed by empty MultiCompiler rebuilds Open

web-infra-dev/rspack#15681 · 1 comment · 1 assignee · Opened Sep 15, 2026
[Bug]: Bundled Watchpack falsely removes directory case aliases on macOS (2.2.4) Open

web-infra-dev/rspack#15677 · 1 assignee · Opened Sep 14, 2026
[Feature]: Add ChunkImportMapPlugin to improve caching of ESM chunks Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

web-infra-dev/rspack#15605 · Opened Sep 10, 2026
[Bug]: `module.buildInfo` becomes stale when caching is enabled and `buildInfo` is mutated by a native loader Open

pending triage

web-infra-dev/rspack#15442 · 1 comment · 1 assignee · Opened Sep 3, 2026
[Bug]: Cannot get final name for export 'easeCubicInOut' Open

need more info need reproduction

web-infra-dev/rspack#15440 · 5 comments · 1 assignee · Opened Sep 3, 2026
[Bug]: output.filename for CSS files Open

web-infra-dev/rspack#15491 · 4 comments · 1 assignee · Opened Sep 2, 2026
fix(cache): skip non-serializable entries during filesystem cache writes Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

web-infra-dev/rspack#15406 · Opened Aug 31, 2026
[Bug]: jsc.transform.reactCompiler drops source-map mappings for compiled component/hook bodies Open

upstream

Difficulty 4/5 3-5 days Newbie friendliness 48/100

web-infra-dev/rspack#15350 · 1 comment · Opened Aug 26, 2026
[Bug]: dev server hangs permanently and stops rebuilding after a plugin throws inside the compilation lifecycle Open

web-infra-dev/rspack#15370 · 1 comment · 1 assignee · Opened Aug 24, 2026
[Bug]: React Compiler transforms postfix increment into non-equivalent code and changes runtime semantics Open

upstream

web-infra-dev/rspack#15256 · 2 comments · 1 reaction · 1 assignee · Opened Aug 20, 2026
[Feature]: Reduce native binding size by disabling unused Pulley compiler backend Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

web-infra-dev/rspack#15215 · Opened Aug 17, 2026
[Tracking]: new cache system Open

tracking issue

web-infra-dev/rspack#15173 · 3 reactions · 1 assignee · Opened Aug 13, 2026
[Bug]: LazyCompilation + HMR forms an infinite rebuild loop — activeModules cleared after each rebuild Open

web-infra-dev/rspack#15062 · 1 assignee · Opened Aug 4, 2026
[Bug]: ~5x memory regression (OOM) building a large graph on @rspack/core 2.1.x (fine on 2.0.x) Open

web-infra-dev/rspack#15021 · 11 comments · 1 reaction · 1 assignee · Opened Jul 31, 2026
[Feature]: support conditionally running loaders based on module contents Open

web-infra-dev/rspack#14983 · 4 comments · 1 assignee · Opened Jul 29, 2026
Diagnostics: memory/time scale as O(error count × line length) with no cap — a 267KB input can drive the build process past 10GB RSS (78GB observed on a real-world file) Open

web-infra-dev/rspack#14961 · 5 comments · 1 assignee · Opened Jul 27, 2026
[Bug]: persistent cache restores stale output when pnpm peer-context symlink retargets without a package-version change Open

web-infra-dev/rspack#14894 · 1 assignee · Opened Jul 21, 2026
[Feature]: Reuse loader transform results across persistent module-graph invalidation Open

web-infra-dev/rspack#14893 · 1 comment · 1 assignee · Opened Jul 21, 2026
[Bug]: missing file snapshot record keeps changed module output stale Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

web-infra-dev/rspack#14865 · Opened Jul 20, 2026
[Bug]: missing snapshot_build recovery keeps stale build-dependency output Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

web-infra-dev/rspack#14864 · Opened Jul 20, 2026
[Bug]: missing meta record leaves dependency IDs inconsistent during recovery Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

web-infra-dev/rspack#14863 · 1 comment · Opened Jul 20, 2026
[Bug]: minimize recovery can cross-wire cached outputs between assets Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 68/100

web-infra-dev/rspack#14862 · 2 comments · Opened Jul 20, 2026
[Bug]: incomplete snapshot_missing recovery keeps a newly created dependency unresolved Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 50/100

web-infra-dev/rspack#14861 · Opened Jul 20, 2026
[Bug]: missing module graph cache entry aborts persistent-cache recovery Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

web-infra-dev/rspack#14860 · 1 comment · Opened Jul 20, 2026
[Bug]: corrupt persistent-cache meta recovery panics Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

web-infra-dev/rspack#14859 · Opened Jul 20, 2026
[Bug]: corrupt persistent-cache module graph recovery panics Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

web-infra-dev/rspack#14858 · Opened Jul 20, 2026
[Bug]: incremental rebuild does not restore a side-effect-only import after sideEffects is re-enabled Open

web-infra-dev/rspack#14855 · 1 assignee · Opened Jul 20, 2026
[Docs]: LightningCssMinimizerRspackPlugin default targets ("fully supports es6") can inflate CSS by downleveling modern selectors Open

web-infra-dev/rspack#14816 · 1 assignee · Opened Jul 16, 2026
HMR preserve finalization leaves re-instantiated modules active and concurrent runners share warnings Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

web-infra-dev/rspack#14792 · Opened Jul 14, 2026
[Perf]: nativeWatcher registers ignored descendants for recursive context dependencies Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

web-infra-dev/rspack#14789 · Opened Jul 14, 2026
[Feature]: getLocalIdent-style callback (or pluggable local ident function) for native CSS Modules Open

web-infra-dev/rspack#14773 · 1 reaction · 1 assignee · Opened Jul 13, 2026
[Perf]: identical SplitChunks work and ChunkSplit mutations repeat on every hot rebuild Open

web-infra-dev/rspack#14770 · 1 assignee · Opened Jul 13, 2026
[Perf]: native watcher drops concrete created child paths from raw change events Open

web-infra-dev/rspack#14766 · 1 comment · 1 assignee · Opened Jul 13, 2026
Persistent-cache snapshot work scales with unchanged Tailwind file dependencies during HMR Open

web-infra-dev/rspack#14765 · 1 comment · 1 assignee · Opened Jul 13, 2026
Persistent cache stops writing in watch mode after cache directory is removed Open

bug cache ready-for-agent

Difficulty 4/5 3-5 days Newbie friendliness 58/100

web-infra-dev/rspack#14723 · 1 comment · Opened Jul 8, 2026
[Feature]: Support for React Compiler 'logger' option Open

pending triage

web-infra-dev/rspack#14718 · 1 assignee · Opened Jul 7, 2026
panic: should have bucket pack metas (rspack_storage write_scope.rs:107:16) Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

web-infra-dev/rspack#14708 · Opened Jul 6, 2026
[Feature]: expose a JS hook to recover from NormalModuleFactory resolution failures Open

feat

Difficulty 5/5 Over a week Newbie friendliness 38/100

web-infra-dev/rspack#14640 · 2 comments · 1 reaction · Opened Jun 30, 2026
[Bug]: modification to virtual files in thisCompilation root can't be read by loaders Open

same as webpack

web-infra-dev/rspack#14616 · 1 comment · 1 assignee · Opened Jun 29, 2026
[Tracking]: webpack compatibility gaps in Rspack Open

tracking issue

web-infra-dev/rspack#14556 · 5 comments · 1 assignee · Opened Jun 24, 2026
[Bug]: RSC client component not added to manifest when using DLL Reference plugin Open

web-infra-dev/rspack#14344 · 1 comment · 1 assignee · Opened Jun 10, 2026
Support layer-scoped externals via `externals.byLayer` Open

feat

web-infra-dev/rspack#14238 · 1 assignee · Opened May 31, 2026

A short digest of beginner-friendly GitHub issues.