June 2026 monthly summary for web-infra-dev/rspack focused on stabilizing module identification and core performance to deliver faster builds and better cache behavior. Key features delivered: (1) Deterministic Module IDs Plugin — introduces a plugin that assigns stable numeric IDs to modules with configurable options (context, max length, conflict handling) and includes user documentation. (2) Module Rule Options Caching — caches resolved module rule options to speed up rule processing and improve maintainability. Notable test and reliability fixes accompanying these features (e.g., test type inline fix for deterministic module IDs, reusable module rule ID assignment).

May 2026 focused on stabilizing and modernizing the build/tooling stack while expanding documentation and examples to empower developers. Key work spanned migrating build/config merge to rspack-merge, strengthening CLI config handling, performance optimizations, and enhancing documentation and onboarding materials. Deliverables targeted business value: more reliable builds, smaller binaries, safer defaults, clearer production guidance, and improved developer experience across repositories.

April 2026 performance summary: Focused on strengthening TypeScript 6.0 compatibility and modernizing the core dependency stack across two key repositories. Delivered a TS config improvement in rslib and completed a major rspack ecosystem upgrade, enabling more stable builds and faster upgrade cycles for downstream teams.

March 2026 monthly summary for web-infra-dev/rspack focused on enhancing import.meta handling and groundwork for broader ESM flexibility. Implemented a new preserve-unknown option to retain unknown import.meta properties for runtime evaluation, improving robustness in ESM output scenarios and enabling flexible module compatibility.

January 2026 monthly summary for web-infra-dev/rspack: Implemented and validated a critical fix in the JavaScript parser for correct handling of require.resolve during module resolution. The change prevents require.resolve from being treated as a plain require(), by adding a local-variable check and dedicated tests, thereby stabilizing builds and module resolution behavior. This work addresses related issues (#10479) and was validated through test coverage and code reviews. Key commits include acfcb911eca2599cc55f89b9d223238f70742950.