fix(local): allow missing .version if not depended on

[keyz]

Description

According to the npm spec, it's fine to omit the version field in package.json:

If you don't plan to publish your package, the name and version fields are optional

Omitting the version field is common for leaf packages that won't ever be published, such as "apps" in a monorepo. IMO this change (introduced by v12) feels like a regression.

Here's a simple repro. The following package.json declares a private package ("app"):

{
  "name": "my-express-app",
  "private": true,
  "scripts": {
    "repro": "syncpack list-mismatches"
  },
  "devDependencies": {
    "syncpack": "^12.0.1"
  }
}

$ npm run repro

> repro
> syncpack list-mismatches

= Default Version Group ========================================================
✘ my-express-app PACKAGE_JSON_HAS_NO_VERSION → ??? package.json > version [MissingLocalVersion]
  package.json does not have a .version property which is exact semver
     1 ✓ already valid
     1 ! can be fixed manually using syncpack prompt

Suggested Solution

Relax the policy such that leaf packages (that no one depends on) can omit the version field

Help Needed

[JamieMason]

Thanks I'll check it over, it should only happen if it is depended on.

https://jamiemason.github.io/syncpack/guide/status-codes/#missinglocalversion

[dbrxnds]

Running into this same issue now as well.

[JamieMason]

I would stay on v11 for now if this is an issue – or add "version": "0.0.0" to the package.

[JamieMason]

Released in 12.1.0.

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