web-infra-dev/rspack - CodSpeed

rspack

Blog Docs Changelog

Performance History

Latest Results

perf(sources): give source map mappings spare capacity back Mappings are appended to a growing Vec<u8>, so a finished map can keep up to half of its allocation unused. Source maps are retained for the rest of the compilation, so shrink the buffer once encoding is complete, but only when the spare capacity is large enough to justify the copy.

seal/tighten-owned-mappings

5 hours ago

perf: share Module and KnownBuildInfo accessors

seal/share-module-accessors

13 hours ago

chore(deps): update napi

renovate/napi

14 hours ago

fix(binding): align lazy source declarations and absent maps

seal/perf-original-source-lazy

14 hours ago

perf: use static replacement contents where possible `ReplaceSource` stores a `&'static str` content without borrowing or allocating, so the call sites that stringified a constant, a boolean or a static value now produce the same output with one allocation less per replacement: - the `"undefined"` of unsupported require properties and of `ExportInfoDependency` when the property does not resolve (the latter built it eagerly even when it did resolve), and the `)` / `))` suffix of runtime requirement writes; - the import.meta.rsc binding constant; - the `true` / `false` text of `IsIncludedDependency`.

seal/replacement-inline-content

14 hours ago

perf(binding): materialize module original sources lazily Module._originalSource used to convert both the source text and the source map JSON eagerly and cache the resulting JS object, so every module whose original source was read kept a raw source map string alive in the JS heap until the compilation was released. Expose the binding source through a lazy N-API view and let the JS adapter defer building the equivalent SourceMapSource/RawSource until an API that needs the map is actually used.

seal/perf-original-source-lazy

14 hours ago

fix(types): allow shouldEmit hooks to return void (#15881)

main

14 hours ago

fix(types): allow shouldEmit hooks to return void

chenjiahan/fix-should-emit-hook-type

15 hours ago

Latest Branches

0%

perf(sources): give source map mappings spare capacity back#15884

8 hours ago

688c115

seal/tighten-owned-mappings

0%

perf: share Module and KnownBuildInfo accessors#15883

13 hours ago

dd2d335

seal/share-module-accessors

+4%

chore(deps): update napi#15199

14 hours ago

19bbd74

renovate/napi

© 2026 CodSpeed Technology

Home Terms Privacy Docs