Over a two-month period, contributed to Shopify’s Polaris and ui-extensions repositories by focusing on both deprecation management and scalable UI patterns. In Polaris, worked with TypeScript and JavaScript to deprecate legacy Fullscreen Bar and Page Actions components, implementing migration guidance, user-facing messaging, and documentation updates to streamline transitions to modern APIs. The approach included status banners and navigation redirects to minimize disruption. In ui-extensions, developed a reusable IndexTable pattern for the admin interface, enabling consistent, filterable, and sortable data grids for complex datasets. This work emphasized maintainable front-end development, code refactoring, and clear documentation to support future extensibility.