min-repro-builder

name	min-repro-builder
description	create minimal reproduction cases for bugs. Trigger when asked to isolate an issue, create a test case, or debug a complex interaction.

Minimal Repro Builder

Isolate bugs by creating a minimal, self-contained reproduction environment.

Workflow

1. Select the Canvas Identify where to build the repro.

   • Unit Test: tests/repro.test.js (for logic/state).
   • Component: src/ui/Repro.tsx (for UI/rendering).
   • Scene: src/scenes/ReproScene.tsx (for game loop/audio).

2. Minimize State Start with initialState and strip everything not needed.

   • Need: player.money, audioManager.
   • Don't Need: inventory, unlocks (unless relevant).

3. Reuse Assets Do not add new media/data files. Use existing assets where possible:

   • src/assets/rhythm_songs.json
   • public/placeholder.png (if exists)

4. Inject the Bug Force the condition.

   • Example: "Set player.health = -1 on init to test death screen."

5. Document Usage "To run the repro, import ReproScene in the current TSX app route/scene entry point and set it as the initial route."

Example

Input: "The game crashes when the player has 0 fuel and tries to travel."

Action:

1. Create tests/repro_travel_crash.test.js.
2. Import gameReducer.
3. Set up state: fuel: 0.
4. Dispatch TRAVEL action.
5. Assert: Should throw an error.

Output: "Created tests/repro_travel_crash.test.js. Run with node --test tests/repro_travel_crash.test.js. Confirmed it throws an error."

Skill sync: compatible with React 19.2.6 / Vite 8.0.10 / Tailwind 4.2.4 baseline as of 2026-05-20.