TypeScript Monorepo Optimization Guide

# Scalable TypeScript Monorepos in Claude Code

Master monorepo setups with Claude's reasoning for config optimization and tool use for package management.

## Turborepo Structure
```
packages/
  ui/ (shared components)
  config/ (eslint, tsconfig)
  app-a/ (Next.js)
  app-b/ (Vite)
  api/ (Node)
turbo.json
pnpm-workspace.yaml
```

## tsconfig.json Strategies
```json
{
  "extends": "./base.json",
  "compilerOptions": {
    "baseUrl": ".",
    "paths": {
      "@ui/*": ["packages/ui/src/*"],
      "#types/*": ["packages/types/*"]
    },
    "noEmit": true,
    "composite": true
  },
  "references": [
    { "path": "../ui" },
    { "path": "../types" }
  ]
}
```
- Base config: Strict, isolatedModules: true, verbatimModuleSyntax
- Paths resolution with `tsup` or `tsx`

## Tooling
- ESLint: `eslint-config-flat` with typescript-eslint
- Prettier: Shared config
- Biome: All-in-one linter/formatter
- Changesets: `changeset` for versioning

## Build & CI
- turbo pipelines: `turbo run build --filter=...`
- Remote caching
- Module Federation for micro-frontends

## Performance Tips
- SkipLibCheck: false for safety
- Incremental: true
- Swc for transpilation

Use Claude to audit configs, suggest path mappings, and simulate builds.