Add engines Entry to package.json to Specify Required Node.js Versions

[MikaStark]

Which @angular/* package(s) are relevant/related to the feature request?

core

Description

Hello Angular Team,

When starting a new Angular project, it's not immediately clear which Node.js versions are compatible—especially when working with older Angular versions. Unless developers check the Version Compatibility documentation, they may unknowingly use an unsupported Node.js version, leading to confusing errors.

Proposed solution

A simple and effective solution would be to include an engines field in the generated package.json:

{
  // ...
  "engines": {
    "node": "^20.19.0 || ^22.12.0 || ^24.0.0"
  },
}

This is a standard Node.js feature that many tools and platforms (e.g., DigitalOcean, Vercel) can use to select the appropriate runtime environment during deployment or CI builds.

Alternatives considered

Optionally, generating an .nvmrc file could help local development, but the engines field provides broader support and clearer intent.