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# @tsconfig/node16
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@tsconfig/node16 provides a TypeScript configuration base specifically optimized for Node.js 16 runtime environments. It establishes optimal compiler settings including ES2021 target support, Node.js 16 module resolution, strict type checking, and performance optimizations for Node.js 16 applications.
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## Package Information
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- **Package Name**: @tsconfig/node16
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- **Package Type**: npm
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- **Language**: JSON (TypeScript configuration)
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- **Installation**: `npm install --save-dev @tsconfig/node16`
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## Core Usage
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Add to your `tsconfig.json`:
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```json
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{
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  "extends": "@tsconfig/node16/tsconfig.json"
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}
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```
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Alternative installation methods:
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```bash
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# npm
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npm install --save-dev @tsconfig/node16
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# yarn
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yarn add --dev @tsconfig/node16
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```
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## Basic Usage
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Create or update your `tsconfig.json` file to extend the Node.js 16 configuration:
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```json
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{
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  "extends": "@tsconfig/node16/tsconfig.json",
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  "compilerOptions": {
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    // Your additional options can override or extend the base
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    "outDir": "./dist",
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    "rootDir": "./src"
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  },
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  "include": ["src/**/*"],
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  "exclude": ["node_modules", "dist"]
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}
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```
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## Architecture
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The configuration is structured as a single JSON file that provides:
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- **Base Configuration**: Core TypeScript compiler options optimized for Node.js 16
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- **Module System**: Node.js 16 module resolution with ES module interoperability
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- **Type Safety**: Strict type checking enabled by default
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- **Performance**: Library checking optimization for faster builds
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- **Standards Compliance**: ES2021 target for modern JavaScript features
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## Capabilities
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### TypeScript Configuration
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Provides the complete TypeScript configuration optimized for Node.js 16 environments.
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```json { .api }
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{
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  "$schema": "https://json.schemastore.org/tsconfig",
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  "display": "Node 16",
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  "_version": "16.1.0",
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  "compilerOptions": {
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    "lib": ["es2021"],
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    "module": "node16",
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    "target": "es2021",
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    "strict": true,
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    "esModuleInterop": true,
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    "skipLibCheck": true,
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    "moduleResolution": "node16"
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  }
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}
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```
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### Configuration Properties
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#### Schema and Metadata
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```json { .api }
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{
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  "$schema": "https://json.schemastore.org/tsconfig",
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  "display": "Node 16",
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  "_version": "16.1.0"
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}
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```
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- **$schema**: Provides JSON schema validation and IDE support
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- **display**: Human-readable name for the configuration
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- **_version**: Version of this specific configuration base
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#### Compiler Options
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```json { .api }
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{
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  "compilerOptions": {
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    "lib": ["es2021"],
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    "module": "node16", 
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    "target": "es2021",
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    "strict": true,
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    "esModuleInterop": true,
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    "skipLibCheck": true,
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    "moduleResolution": "node16"
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  }
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}
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```
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**Core Settings:**
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- **lib**: `["es2021"]` - Includes ES2021 standard library definitions
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- **module**: `"node16"` - Uses Node.js 16 specific module system
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- **target**: `"es2021"` - Compiles to ES2021 JavaScript features
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- **moduleResolution**: `"node16"` - Uses Node.js 16 module resolution algorithm
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**Type Safety:**
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- **strict**: `true` - Enables all strict type checking options
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- **esModuleInterop**: `true` - Enables importing CommonJS modules as ES modules
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**Performance:**
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- **skipLibCheck**: `true` - Skips type checking of library files for faster builds
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### Extension Usage
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The configuration is designed to be extended in your project's `tsconfig.json`:
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```json { .api }
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{
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  "extends": "@tsconfig/node16/tsconfig.json"
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}
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```
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You can combine with additional configurations using TypeScript 5.0+ multiple extends:
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```json { .api }
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{
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  "extends": [
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    "@tsconfig/node16/tsconfig.json", 
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    "@tsconfig/strictest/tsconfig.json"
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  ]
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}
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```
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## Configuration Features
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### Node.js 16 Optimization
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- **ES2021 Target**: Leverages modern JavaScript features available in Node.js 16
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- **Node16 Module System**: Full support for ES modules and CommonJS interoperability
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- **Performance Tuned**: Optimized for Node.js 16 runtime characteristics
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### Type Safety
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- **Strict Mode**: All strict type checking options enabled
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- **Module Interoperability**: Seamless integration between module systems
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- **Standards Compliant**: Follows TypeScript and Node.js best practices
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### Build Performance
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- **Library Check Skip**: Faster builds by skipping type checking of node_modules
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- **Optimized Resolution**: Node.js 16 specific module resolution for faster lookups
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- **Minimal Configuration**: Focused set of essential options for optimal performance