Worked on the voiceflow/libs repository to refactor the PrototypeModel interface, focusing on simplifying the data model by removing the optional modelID field. This change, implemented in TypeScript, eliminated an undocumented and unused identifier, thereby reducing complexity for downstream consumers and improving overall maintainability. The approach centered on code refactoring and interface definition, ensuring that no new functionality was introduced while streamlining the codebase for future enhancements. By clarifying the data contract, the work reduced cognitive load for developers and facilitated easier onboarding, setting a foundation for cleaner, more maintainable TypeScript code across the repository moving forward.