next-update/src/local-module-version.js

Tests if module's dependencies can be updated to the newer version without breaking the tests

var check = require('check-more-types')
var fs = require('fs')
var path = require('path')

// sync returns version
function getLocalModuleVersion (name) {
  check.verify.string(name, 'missing name string')

  try {
    var filename = path.join('node_modules', name, 'package.json')
    var contents = fs.readFileSync(filename, 'utf-8')
    var pkg = JSON.parse(contents)
    return pkg.version
  } catch (error) {
    console.error('could not fetch version for local module', name)
    console.error(error)
    return null
  }
}

module.exports = getLocalModuleVersion