Worked on enhancing type safety and stability for 2D mapping features within the Esri/instant-apps-components repository. Addressed a bug by refining TypeScript interface definitions, specifically aliasing __esri.MapViewConstraints to __esri.View2dConstraints, which ensured correct typing for view constraints in mapping components. This adjustment reduced the risk of build and runtime errors, supporting safer API consumption and clearer integration paths for future development. The work focused on interface definition and TypeScript, improving code hygiene and developer experience for downstream consumers. Although no new features were added, the targeted fix contributed to more robust and maintainable mapping library interactions.