James worked on Esri/harfbuzz and w3c/csswg-drafts, focusing on code safety and documentation clarity. He addressed a critical bug in harfbuzz by adding explicit return statements in C++ switch-case blocks, preventing fallthrough and improving color font rendering reliability. In another update, he fixed undefined behavior in shrink_vector handling, ensuring safe memory management when operating on empty vectors. James also improved documentation in the CSSWG drafts repository, aligning text-decoration-trim property details with current CSS grammar. His work demonstrated careful attention to low-level programming, technical writing, and memory management, contributing to more robust and maintainable code across both projects.