Comment utiliser : package.json Generator
- Enter the package name and version — the name is checked against npm’s naming rules as you type.
- Choose a scripts preset (Node, Vite, Next.js, TypeScript library) and the module type.
- Add license, author, repository and the Node.js version your code needs.
- Copy or download the file into your project root, then run
npm installto add dependencies.
The most important package.json fields
| Field | What it does |
|---|---|
name | Package name — lowercase, max. 214 characters, URL-safe, may be scoped (@org/name) |
version | A semantic version like 1.4.2 |
type | "module" treats .js files as ES modules (import); default is CommonJS |
main / exports | The entry point(s) other code imports. exports also hides internal files |
scripts | Commands for npm run dev, build, test… |
engines | Node.js versions your code supports |
private | true prevents accidental npm publish |
packageManager | Pins npm, pnpm or Yarn via Corepack |
Dependencies are added by the package manager
Don’t type dependency versions by hand — run npm install react or npm install -D vite and npm writes them with the right version range (usually ^). Commit the lock file so everyone installs the same versions.
Next steps for a new project
Add a .gitignore (at least node_modules/ and .env), an .editorconfig, a README and a GitHub Actions workflow that runs your test and build scripts on every push.
Aussi recherché comme : package.json example, npm init, package.json scripts, package.json exports, node package.json, npm package name rules, package.json type module.
Outils complémentaires : package.json Generator
- Formateur JSON — Collez votre code JSON pour le formater, le compresser ou le valider.
- YAML Validator — Paste a Docker Compose file, Kubernetes manifest, GitHub Actions workflow or any YAML to pinpoint errors, catch common pitfalls and get a cleanly formatted version.
- Kubernetes YAML Generator — Fill in your app’s name, image and port and get production-ready Kubernetes YAML: a Deployment with probes, resource limits and a hardened security context, plus the Service, Ingress with TLS, ConfigMap, Secret and HorizontalPodAutoscaler you tick — in one file ready for kubectl apply.
- systemd Service Generator — Run your app as a proper Linux service that starts on boot and restarts when it crashes.
Questions fréquentes
What are the rules for npm package names?
Lowercase only, no spaces, max. 214 characters, can’t start with a dot or underscore, only URL-safe characters (letters, digits, - . _ ~), and not a Node.js core module name like http. Scoped names look like @scope/name.
Should I use "type": "module"?
For new projects, yes — ES modules are the standard and work in Node.js 18+, Vite and most tools. Use CommonJS only if you depend on tooling that requires require().
What does "private": true do?
It makes npm refuse to publish the package, which protects apps and internal projects from being published by accident.
Where do dependencies go?
Install them with npm, pnpm or Yarn; the tool writes them into dependencies or devDependencies automatically.
Puis-je installer package.json Generator en tant qu’application web et l’utiliser hors ligne ?
Oui. package.json Generator est une application web installable (PWA) : elle s’installe depuis votre navigateur, sans passer par une boutique d’applications. Cliquez sur « Installer l’application » en haut de cette page dans Chrome ou Edge (Windows, macOS, Linux, ChromeOS) ; sur Android, utilisez « Partager » → « Ajouter à l’écran d’accueil » sur iPhone et iPad ; ou « Fichier » → « Ajouter au Dock » dans Safari 17+ sur Mac. L’application s’ouvre alors dans sa propre fenêtre avec sa propre icône, et comme elle s’exécute entièrement dans votre navigateur, elle continue de fonctionner hors ligne. Firefox sur ordinateur de bureau ne permet pas d’installer d’applications web. Comment fonctionne l’installation.