$ package-json --help
  Usage
    $ package-json <name> [version=latest]
  Options
    --full-metadata  Output full package metadata
    --all-versions   Output all versions
    --registry-url   Custom registry URL
    --no-deprecated  Omit deprecated versions
  Example
    $ package-json ava
    {
      "name": "ava",
      "version": "6.1.1"
      …
    }