package-dependency-stats

Gets the npm reigstry stats for all the dependencies in a package.json object. Also see gh-repo-dependencies.

Install

npm install package-dependency-stats --save

Example

var packageStats = require('package-dependency-stats')
var readPackage = require('read-closest-package')

readPackage(function (err, data) {
  if (err) throw err
  packageStats(data, {
    filter: function (pkg) {
      return pkg.list === 'dependencies'
    }
  }, function (err, deps) {
    if (err) throw err

    // print dependency name and registry description
    deps = deps.map(function (d) {
      return d.name + ': ' + d.stats.description
    })
    console.log(deps.join('\n'))
  })
})

Usage

packageDepStats(packageJson, [opt], [cb])

Fetches npm registry stats from the dependencies in packageJson (an object).

Options:

• filter (Function) optionally filter the dependencies before querying npm registry

For example, filter could look like this to avoid querying registry stats of devDependencies.

function filterDeps (package) {
  return package.list === 'dependencies'
}

The callback takes the form (err, data), where data is a flat array of dependencies gleaned from dependencies, devDependencies, peerDependencies, optionalDependencies (in that order) unless otherwise filtered.

Each item has the following data:

{
  name: 'inherits',     // name as it appears in package.json
  version: '^2.0.1',    // version range from package.json
  list: 'dependencies', // type of dependency
  stats: { ... }        // registry stats
  error: Error          // Error object if there was a problem
}

If stats could not be retrieved for that package, it will be null and error will be populated with the Error object. Otherwise error will not be defined.

The stats are fetched using npm-stats.

Note: packageJson can be a simple object like so:

{
  dependencies: { ... },
  devDependencies: { ... }
}

See Also

• gh-repo-dependencies - same as this tool, but gleaned from a GitHub repository
• repo-deps - CLI tool with similar goals
• read-closest-package - get a package.json from cwd

License

MIT, see LICENSE.md for details.