@tsconfig/node20

@tsconfig/node20 provides a base TypeScript configuration optimized for Node.js 20 applications. It includes pre-configured compiler options with ES2023 library support, NodeNext module system, ES2022 target, strict type checking, and proper ES module interoperability.

Package Information

• Package Name: @tsconfig/node20
• Package Type: npm
• Language: TypeScript Configuration
• Installation: npm install --save-dev @tsconfig/node20

Core Imports

TypeScript configuration packages are used through the extends mechanism in tsconfig.json files:

{
  "extends": "@tsconfig/node20/tsconfig.json"
}

The package provides a single configuration file that can be extended in any TypeScript project. No direct code imports are required - the configuration is applied automatically by the TypeScript compiler.

Basic Usage

Create or update your project's tsconfig.json:

{
  "extends": "@tsconfig/node20/tsconfig.json",
  "compilerOptions": {
    // Your additional options here
    "outDir": "./dist",
    "rootDir": "./src"
  },
  "include": [
    "src/**/*"
  ],
  "exclude": [
    "node_modules",
    "dist"
  ]
}

Alternative installation via Yarn:

yarn add --dev @tsconfig/node20

Architecture

@tsconfig/node20 follows the TypeScript configuration inheritance model:

• Base Configuration: Provides a foundation of Node.js 20 optimized compiler options
• Extension Mechanism: Uses TypeScript's extends field to inherit configurations
• Composition Pattern: Allows layering additional options on top of the base configuration
• Compiler Integration: Integrates directly with the TypeScript compiler's configuration resolution system

The architecture enables:

• Modular Configuration: Separate base configurations from project-specific settings
• Inheritance Chain: Multiple configurations can be extended in sequence
• Override Capability: Project-specific options can override base configuration values
• Tool Compatibility: Works with all TypeScript-compatible build tools and IDEs

Capabilities

Base Configuration Extension

Extends the provided Node.js 20 optimized TypeScript configuration through the TypeScript extends mechanism.

Usage in tsconfig.json:

{
  "extends": "@tsconfig/node20/tsconfig.json"
}

The base configuration provides the following compiler options:

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "display": "Node 20",
  "_version": "20.1.0",
  "compilerOptions": {
    "lib": ["es2023"],
    "module": "nodenext",
    "target": "es2022",
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "moduleResolution": "node16"
  }
}

Compiler Options Configuration

The package configures TypeScript for optimal Node.js 20 development:

Library Support

{
  "lib": ["es2023"]
}

Includes ES2023 standard library features for modern JavaScript functionality.

Module System

{
  "module": "nodenext",
  "moduleResolution": "node16"
}

Configures Node.js ESM support with modern module resolution.

Target Environment

{
  "target": "es2022"
}

Targets ES2022 features compatible with Node.js 20.

Type Safety

{
  "strict": true,
  "esModuleInterop": true,
  "skipLibCheck": true
}

Enables strict type checking with ES module interoperability and optimized compilation.

Configuration Properties

Schema and Metadata

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "display": "Node 20",
  "_version": "20.1.0"
}

• $schema: JSON schema for TypeScript configuration validation
• display: Human-readable configuration name
• _version: Internal version tracking for the configuration

Compiler Options

{
  "compilerOptions": {
    "lib": ["es2023"],
    "module": "nodenext", 
    "target": "es2022",
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "moduleResolution": "node16"
  }
}

• lib: ES2023 library includes for modern JavaScript features
• module: NodeNext for full Node.js ESM support
• target: ES2022 compilation target for Node.js 20 compatibility
• strict: Strict type checking enabled
• esModuleInterop: Simplified CommonJS/ESM interoperability
• skipLibCheck: Skip declaration file type checking for faster builds
• moduleResolution: Node16 resolution algorithm for modern module handling

Integration Patterns

Project Setup

Typical project structure when using @tsconfig/node20:

project/
├── src/
│   ├── index.ts
│   └── utils/
├── tsconfig.json
└── package.json

Example tsconfig.json extending the base configuration:

{
  "extends": "@tsconfig/node20/tsconfig.json",
  "compilerOptions": {
    "outDir": "./dist",
    "rootDir": "./src",
    "declaration": true,
    "sourceMap": true
  },
  "include": ["src/**/*"],
  "exclude": ["node_modules", "dist", "**/*.test.ts"]
}

The extends field tells TypeScript to inherit all configuration options from @tsconfig/node20, then apply any additional or overriding options specified in the local configuration.

Build Integration

Compatible with standard TypeScript build tools:

# Direct TypeScript compilation
npx tsc

# With build scripts in package.json
npm run build

Development Environment

Works seamlessly with:

• VS Code TypeScript language service
• TypeScript-ESLint
• Jest with TypeScript support
• Node.js native ES modules
• TypeScript project references

Error Handling

Configuration Validation

The TypeScript compiler will validate the extended configuration and report errors for invalid options or conflicts.

Module Resolution Issues

If module resolution fails, ensure your Node.js version supports the configured module system:

• Node.js 20+ required for full NodeNext module support
• ES modules require .mjs extension or "type": "module" in package.json for .js files

Common Integration Problems

• Strict Mode Errors: The configuration enables strict type checking; existing code may need type annotations
• ES Module Compatibility: Ensure dependencies support ES modules when using NodeNext module resolution
• Library Compatibility: Some libraries may not include ES2023 types; consider skipLibCheck: true (already enabled)