turborepo

# Turborepo Skill Build system for JavaScript/TypeScript monorepos. Turborepo caches task outputs and runs tasks in parallel based on dependency graph. ## IMPORTANT: Package Tasks, Not Root Tasks **DO NOT create Root Tasks. ALWAYS create package tasks.** When creating tasks/scripts/pipelines, you MUST: 1. Add the script to each relevant package's `package.json` 2. Register the task in root `turbo.json` 3. Root `package.json` only delegates via `turbo run <task>` **DO NOT** put task logic in root `package.json`. This defeats Turborepo's parallelization. ```json // DO THIS: Scripts in each package // apps/web/package.json { "scripts": { "build": "next build", "lint": "eslint .", "test": "vitest" } } // apps/api/package.json { "scripts": { "build": "tsc", "lint": "eslint .", "test": "vitest" } } // packages/ui/package.json { "scripts": { "build": "tsc", "lint": "eslint .", "test": "vitest" } } ``` ```json // turbo.json - register tasks { "tasks": { "build": { "dependsOn": ["^build"], "outputs": ["dist/**"] }, "lint": {}, "test": { "dependsOn": ["build"] } } } ``` ```json // Root package.json - ONLY delegates, no task logic { "scripts": { "build": "turbo run build", "lint": "turbo run lint", "test": "turbo run test" } } ``` ```json // DO NOT DO THIS - defeats parallelization // Root package.json { "scripts": { "build": "cd apps/web && next build && cd ../api && tsc", "lint": "eslint apps/ packages/", "test": "vitest" } }...