# Builders

## Library Builder (tsup)

Used for: TypeScript libraries in `@packages/`

**Invokes:** `tsup [--clean] [--watch]`

**Expects:**
- `tsup.config.ts` OR tsup in build script
- Output in `dist/`

**Verifies:** `dist/index.js` exists

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## NestJS Builder (nest build)

Used for: NestJS backend services

**Invokes:** `nest build [--watch]`

**Expects:**
- `nest-cli.json`
- `.swcrc` (for SWC compilation)
- Output in `dist/`

**Verifies:** `dist/main.js` exists

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## Frontend Builder (vite build)

Used for: React frontends

**Invokes:** `vite build`

**Expects:**
- `vite.config.ts`
- React in dependencies
- Output in `dist/`

**Verifies:** `dist/index.html` exists