try-claudekit/docs/tech-stack.md

Tech Stack

Category	Tool	Version	Purpose
Runtime	Matter.js	^0.20.0	2D rigid-body physics engine
Rendering	Canvas2D	(built-in)	Fruit drawing, UI overlay, game-over screen
Build	Vite	^8.0.4	Dev server, ES module bundling, production builds
Testing	Vitest	^4.1.4	Unit and integration tests
Language	JavaScript (ES Modules)	—	Vanilla JS, no framework
Dev Tooling	ClaudeKit	—	Git hooks for linting, type-checking, testing, self-review

Project Structure

src/
  main.js          Entry point: initializes game, attaches event listeners
  game.js          Game class: orchestrates engine, renderer, input, state
  physics.js       Matter.js engine setup, world configuration, walls
  renderer.js      Canvas2D rendering: fruits, walls, UI overlay
  input.js         Mouse/touch input handling, drop control
  fruits.js        Fruit definitions (sizes, colors, labels, progression)
  merger.js        Collision detection callback, merge logic, scoring
  constants.js     Game dimensions, physics tuning, timing constants
  style.css        Page styling
  *.test.js        Vitest test files
index.html         Single HTML page with canvas element
specs/             Feature and bugfix specifications
docs/              Documentation