July 2026 monthly summary for oxc-project/oxc focusing on performance optimization of the No-Obj-Calls lint rule, with added test coverage and verification of correctness. No major bugs fixed this month; effort centered on delivering high-value performance and stability improvements.

June 2026 monthly performance summary: Delivered cross-repo performance and stability improvements across JetBrains/typescript-go, oxc, and TanStack/virtual. Business value focused on faster developer feedback (linting, parsing), lower memory/cpu costs, and smoother virtualization under dynamic UI changes. Key features shipped include core parsing/scanning performance improvements, linter performance/memory optimizations, and virtualizer stability plus range calculation performance. Major bugs fixed address end-anchored scroll drift during resizes and multi-frame reflows, improving UX stability. Technologies demonstrated include data-structure optimizations, zero-allocation or reduced-allocation patterns, keyed symbol lookups, closure elimination on hot paths, regression testing, and cross-repo collaboration.