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Editing: find-vs2017.js

var log = require('npmlog')
  , execFile = require('child_process').execFile
  , path = require('path')

function findVS2017(callback) {
  var ps = path.join(process.env.SystemRoot, 'System32', 'WindowsPowerShell',
                     'v1.0', 'powershell.exe')
  var csFile = path.join(__dirname, 'Find-VS2017.cs')
  var psArgs = ['-ExecutionPolicy', 'Unrestricted', '-Command',
                '&{Add-Type -Path \'' + csFile +
                '\'; [VisualStudioConfiguration.Main]::Query()}']

log.silly('find vs2017', 'Running', ps, psArgs)
  var child = execFile(ps, psArgs, { encoding: 'utf8' },
           function (err, stdout, stderr) {
    log.silly('find vs2017', 'PS err:', err)
    log.silly('find vs2017', 'PS stdout:', stdout)
    log.silly('find vs2017', 'PS stderr:', stderr)

if (err)
      return callback(new Error('Could not use PowerShell to find VS2017'))

var vsSetup
    try {
      vsSetup = JSON.parse(stdout)
    } catch (e) {
      log.silly('find vs2017', e)
      return callback(new Error('Could not use PowerShell to find VS2017'))
    }
    log.silly('find vs2017', 'vsSetup:', vsSetup)

if (vsSetup && vsSetup.log)
      log.verbose('find vs2017', vsSetup.log.trimRight())

if (!vsSetup || !vsSetup.path || !vsSetup.sdk) {
      return callback(new Error('No usable installation of VS2017 found'))
    }

log.verbose('find vs2017', 'using installation:', vsSetup.path)
    callback(null, { "path": vsSetup.path, "sdk": vsSetup.sdk })
  })

child.stdin.end()
}

module.exports = findVS2017

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