Worked on enhancing emberjs/data for Ember 7.0 compatibility by removing deprecated imports and refactoring property manipulation methods. Addressed the transition from the legacy 'import Ember from "ember"' pattern to explicit imports from @ember/object, implementing inline versions of decrementProperty, incrementProperty, and toggleProperty to maintain existing behavior. Eliminated reliance on Ember.libraries in core.ts to align with RFC 1003, ensuring the codebase met new framework standards. Focused on maintaining parity with upstream Ember implementations, particularly around numeric handling and assertions. Utilized TypeScript, JavaScript, and Ember.js to improve maintainability and facilitate safer upgrades for downstream applications.