web-infra-dev/rspack - CodSpeed

rspack

Blog Docs Changelog

Performance History

Latest Results

chore(ci): use published ancestor for stacked size baseline Use the nearest ancestor that can publish binary-size data when a pull request is stacked on an unpublished branch, and explain the fallback in the comparison comment. Co-authored-by: ScriptedAlchemy <zackary.l.jackson@gmail.com>

seal/binary-limit-stacked-base

6 minutes ago

perf(module-concat): cache incoming analysis across roots Cache runtime-dependent incoming module analysis across root searches while keeping root-specific chunk and ESM checks outside the cache. Add runtime-isolation coverage for multi-runtime builds. Co-authored-by: ScriptedAlchemy <zackary.l.jackson@gmail.com>

seal/module-concat-runtime-cache

10 minutes ago

perf(module-concat): reduce remaining hot-path overhead Share unsupported-syntax payloads, use cached-key sorting for repeated identifiers, and clone root chunk state once per root search. Co-authored-by: ScriptedAlchemy <zackary.l.jackson@gmail.com>

seal/module-concat-hot-paths

10 minutes ago

test(module-concat): add concatenation benchmark baselines Add shared-root, bailout, and unsupported-syntax scenarios so each optimization layer can be compared against identical fixtures. Co-authored-by: ScriptedAlchemy <zackary.l.jackson@gmail.com>

seal/module-concat-benchmarks

11 minutes ago

perf(module-concat): reuse root search state and bailout data Reuse per-root search scratch state, share immutable bailout payloads, and defer warning materialization until needed. Keep runtime-dependent analysis cached while reducing transient allocations in the concatenation search. Co-authored-by: ScriptedAlchemy <zackary.l.jackson@gmail.com>

seal/module-concat-search-state

11 minutes ago

refactor: extract AST options objects with an AstObject derive macro

poc/ast-options-macro

2 hours ago

fix(watcher): run FsWatcher on a single owner task to fix concurrent &mut races NativeWatcher.watch()/close() each spawned a detached task holding an aliased &'static mut NativeWatcher from Reference::share_with. On the multi-thread runtime these tasks mutate the same FsWatcher concurrently: on macOS the race corrupts notify's FSEvents CFMutableArray (use-after-free -> NSInvalidArgumentException / SIGSEGV), and in debug builds it trips tokio's join-waker assertion via the Executor's JoinHandles. FsWatcher is now a handle whose state is owned by a single task spawned in FsWatcher::new. watch()/close() enqueue synchronously and return ack futures, so operations execute strictly in call order (watch receives incremental added/removed sets, where reordering corrupts the watched set). After close, queued Watch ops are rejected through on_error and further Close ops resolve; the task exits when the handle drops. pause()/trigger_event() stay lock-free and synchronous. The binding drops share_with and the unsafe close entirely, and NativeWatchFileSystem detaches its native watcher on close so a subsequent compiler.watch() gets a fresh instance with a full registration.

fix/native-watcher-owner-task

2 hours ago

fix: warn for non-object import.meta.env values and document experiments.env

codex/import-meta-env-runtime

6 hours ago

Latest Branches

-3%

chore(ci): use published ancestor for stacked size baseline#14836

31 minutes ago

95a0422

seal/binary-limit-stacked-base

+15%

perf: cache module concatenation analysis across roots#14832

51 minutes ago

9924a3e

seal/module-concat-runtime-cache

+2%

perf: reduce module concatenation hot-path overhead#14834

39 minutes ago

132119d

seal/module-concat-hot-paths

© 2026 CodSpeed Technology

Home Terms Privacy Docs