During October 2025, François Stasse expanded geospatial visualization capabilities in the DefinitelyTyped/DefinitelyTyped repository by delivering new geospatial trace types for Plotly.js, including choroplethmap, densitymap, and scattermap. He focused on updating TypeScript type definitions and strengthening test coverage to ensure robust integration of these features. His work introduced MapLibre-compatible map traces derived from Mapbox, broadening interoperability for developers working with modern mapping libraries. By concentrating on feature delivery and code quality rather than bug fixes, François demonstrated depth in API development and data visualization, leveraging TypeScript and test-driven development to enhance reliability and developer experience within the DefinitelyTyped ecosystem.