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algorithms/AGENTS.md
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# AGENTS.md
## Repository Purpose
TypeScript algorithms learning library with demo UI. Also publishes as a npm library.
## Essential Commands
**Development:**
- `npm run dev` - Start Vite dev server (demo UI in src/)
- `npm run build` - Build library (tsc + vite build → dist/)
- `npm run test` - Run tests with Vitest
- `npm run test:report` - Run tests with verbose output
- `npm run coverage` - Run tests with coverage report
**Add New Algorithm:**
- `npm run add:module <name>` - Create new algorithm module in lib/
- Generates: `.ts`, `.test.ts`, `index.ts`, `readme.md`
- Creates test with sample data [-12, 1, 4, 6, 22]
## Architecture
**Dual Structure:**
- `src/` - Vite demo application (development only)
- `lib/` - Library source code (gets built to dist/)
**Library Entry:**
- Main: `./lib/main.ts` → exports setupCounter
- Build outputs: `dist/counter.{js,umd.cjs}`
- Types: `./index.d.ts`
**Algorithm Pattern:**
Each algorithm in lib/ has:
- Implementation in `<name>.ts`
- Test in `<name>.test.ts`
- Index re-export in `index.ts`
- README with complexity analysis
## Build Order
When publishing: `npm run build` → generates library files in dist/
## Testing
- Uses Vitest (not Jest)
- Test files alongside implementations in lib/
- Default test array: [-12, 1, 4, 6, 22]