Copilot Enables Interactive New Year Countdown App
In the final Rubber Duck Thursdays livestream of 2025, the host used GitHub Copilot and custom agents to build an interactive New Year countdown targeting midnight January 1, 2026. The workflow combined a Vite/TypeScript/Tailwind stack, Plan and UI Performance Specialist agents for requirement discovery and reviews, and test-driven development with Copilot to handle time zones and a world-map selector. The episode demonstrates practical AI-assisted development patterns for developers.
Key Points
- 1Used GitHub Copilot and custom agents to scaffold complete Vite/TypeScript/Tailwind countdown workspace quickly
- 2Leveraged Plan agent to ask clarifying questions, surfacing edge cases like timezones, mobile, and celebration behavior
- 3Apply modular architecture, test-driven development, and context-window management to improve AI-assisted engineering workflows
Scoring Rationale
Practical and actionable AI-assisted development patterns drive the score; limited novelty and single-stream depth reduce broader impact.
Sources
Public references used for this report.
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