Devkitr

Package.json Generator

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Scaffold package.json with name, scripts, license, engines, and common configs.

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{
  "name": "my-awesome-project",
  "version": "1.0.0",
  "description": "A starter project",
  "type": "module",
  "main": "dist/index.js",
  "license": "MIT",
  "scripts": {
    "dev": "next dev",
    "build": "next build",
    "start": "next start",
    "lint": "eslint .",
    "test": "vitest"
  },
  "dependencies": {
    "react": "^19.0.0",
    "next": "^15.0.0"
  },
  "devDependencies": {
    "typescript": "^5.0.0",
    "eslint": "^9.0.0"
  }
}

Understanding JSON (JavaScript Object Notation)

package.json is the manifest file for every Node.js project — defining the project name, version, dependencies, scripts, entry points, license, and metadata used by npm, yarn, and pnpm. A well-configured package.json includes proper version constraints for dependencies, useful script shortcuts for development workflows, correct repository and homepage URLs for npm registry pages, and accurate engine requirements for Node.js version compatibility. For npm packages, the package.json determines what gets published, how the package is consumed, and what appears on the npm registry page.

Create a complete package.json file using a guided form. Set the package name, version, description, author, license, entry points (main, module, types), scripts (dev, build, test, lint), engines, repository, keywords, and dependencies. Supports CommonJS and ESM configurations. Generates a clean, standards-compliant package.json.

The Devkitr Package.json Generator builds complete package.json files through a structured form. Enter your project details, select common dependencies, define scripts, and configure publishing settings to generate a comprehensive, properly-formatted package.json.

In a typical development workflow, Package.json Generator becomes valuable whenever you need to scaffold package. Whether you are working on a personal side project, maintaining production applications for a company, or collaborating with a distributed team across time zones, having a reliable browser-based generation tool eliminates the need to install desktop software, write one-off scripts, or send data to third-party services that may log or retain your information. Since Package.json Generator processes everything locally on your device, your data stays private and your workflow stays uninterrupted — open a browser tab, paste your input, get your result.

Key Features

Structured Form Input

Fill in name, version, description, author, license, repository, keywords, and engines through labeled fields with validation for npm naming rules.

Script Templates

Add common script entries — dev, build, start, test, lint, format — with correct commands for popular frameworks (Next.js, Express, Vite).

Dependency Management

Add dependencies and devDependencies with version constraint suggestions — exact, caret (^), tilde (~) — and common package recommendations.

Publishing Configuration

Configure main, module, types, exports, files, and other fields required for publishing npm packages with proper entry points.

How to Use Package.json Generator

1

Enter Project Details

Fill in the project name (must be lowercase, URL-safe), version, description, author, and license.

2

Add Scripts

Define npm scripts for development, building, testing, and linting using templates or custom commands.

3

Add Dependencies

Search and add dependencies and devDependencies with appropriate version constraints.

4

Generate and Download

Download the formatted package.json file or copy the JSON to paste into your project root.

Use Cases

New Project Initialization

Generate a comprehensive package.json with all required fields when starting new Node.js, React, Vue, or Express projects.

npm Package Publishing

Configure publishing fields (main, module, types, exports, files) correctly for open-source npm packages.

Monorepo Package Setup

Create package.json files for individual packages within monorepos with proper workspace and dependency configurations.

Template Standardization

Generate standardized package.json templates for team use, ensuring consistent script names, dependencies, and configurations.

Pro Tips

Use "engines" field to specify required Node.js version — this prevents installation failures when users have incompatible Node.js versions.

List only production dependencies in "dependencies". Development tools (TypeScript, ESLint, Jest) belong in "devDependencies".

Use the "files" field to whitelist published files. Without it, npm publishes everything not in .gitignore, potentially including test fixtures and docs.

Set "type": "module" for ESM projects or "type": "commonjs" (default) for CJS. This determines how .js files are interpreted.

Common Pitfalls

Not differentiating between dependencies and devDependencies

Fix: devDependencies are not installed when users npm install your package. Testing tools, linters, and build tools should be devDependencies.

Using * or latest as version constraints

Fix: Use caret (^1.2.3) for compatible updates or exact (1.2.3) for pinning. Wildcard constraints install unpredictable versions that can break your project.

Publishing without proper "files" or "main" configuration

Fix: Without "files", unnecessary development files are published. Without "main", consumers can't import your module. Configure both before publishing.

Frequently Asked Questions

QDoes it support ESM configuration?

Yes. Set "type": "module" and configure module/exports fields for ESM packages.

QCan I add dependencies?

Yes. Add dependencies and devDependencies with version ranges. Common packages are available as quick-add buttons.

QWhich licenses are available?

MIT, Apache-2.0, ISC, BSD-2-Clause, BSD-3-Clause, GPL-3.0, LGPL-3.0, MPL-2.0, Unlicense, and WTFPL.

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