Month: 2025-10 — Consolidated CDP debugging infrastructure across Hermes and React Native, delivering removal of legacy CDPHandler, restoration where needed, and stabilization to ensure Hermes debugging support for non-V1 builds while simplifying CI/configuration.

September 2025 highlights: Focused on Hermes API consolidation, runtime exposure, and SHUnit integration to streamline Hermes usage across Facebook Hermes and React Native. Delivered API surface consolidation and backend enhancements, unified instrumentation for opcode/stats, and introduced SHUnit support enabling flexible JavaScript evaluation. Expanded Hermes runtime exposure via hermes.h and centralized profiling under JSI Instrumentation. Refactors migrated IHermesExtra into IHermes and relocated related methods, reducing maintenance burden and improving cross-repo consistency. No major bugs fixed this month; the work primarily established a stronger foundation for RN integration and performance diagnostics.

July 2025 monthly summary: Focused on stabilizing test suites and improving error diagnostics in Hermes repos, delivering measurable business value through fewer flaky tests and quicker debugging.

Month: 2025-05. Focused on hardening runtime configuration to improve reliability and cross-environment compatibility. Delivered a feature that enables ArrayBuffer by default in the hardened Hermes runtime, reducing manual configuration and potential runtime errors. No major bugs fixed this month; primary effort was feature delivery and stabilizing the initialization path.

February 2025 monthly summary for repository mrousavy/hermes. Focus was on strengthening CI testing for iOS by updating the iPhone simulator version in the GitHub Actions workflow to maintain compatibility with the latest Xcode and macOS tooling. This change reduces environment drift and accelerates feedback for iOS builds.

January 2025 monthly summary focusing on the Hermes repository with emphasis on robustness and test coverage. Delivered a critical bug fix to the NaN hashing path and added regression tests to ensure stability across NaN representations, improving hashing consistency for data structures and memoization.