Invalid Version 📦 npm

npm ERR! Invalid Version: (semver parse error)

A package.json or lockfile contains a version string that isn’t valid semver.

Seen on: npm

Meaning

Typos in package.json "version", corrupted lockfiles, or dependencies with broken metadata.

Common causes

  • Invalid "version" in your package.json
  • Corrupted package-lock.json
  • Malformed dependency metadata

⚡ Quick fix

  1. Fix the version field (e.g. 1.0.0)
  2. Regenerate the lockfile
  3. Run npm install --verbose to find the offending package

Detailed fix by platform

npm

  1. rm package-lock.json && npm install --verbose

How to diagnose

  1. Source — Which package.json?
  2. Lockfile — Corrupted?

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