During November 2025, this developer enhanced the adobe/react-spectrum-charts repository by implementing dual axis support for line charts, enabling users to visualize two distinct metrics on separate axes for more effective cross-scale data comparisons. The work focused on expanding the charting library’s capabilities, with careful attention to feature quality and release readiness. Utilizing React for front end development and leveraging both JavaScript and TypeScript, the developer concentrated exclusively on new feature delivery rather than bug fixes. This contribution improved multi-metric visualization options for data-driven dashboards, demonstrating proficiency in charting logic and modern UI development within a collaborative open source environment.