git ssb

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var chalk = require('chalk')
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var semver = require('semver')
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var packageConfig = require('../package.json')
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var shell = require('shelljs')
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function exec (cmd) {
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  return require('child_process').execSync(cmd).toString().trim()
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}
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var versionRequirements = [
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  {
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    name: 'node',
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    currentVersion: semver.clean(process.version),
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    versionRequirement: packageConfig.engines.node
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  }
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]
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if (shell.which('npm')) {
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  versionRequirements.push({
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    name: 'npm',
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    currentVersion: exec('npm --version'),
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    versionRequirement: packageConfig.engines.npm
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  })
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}
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module.exports = function () {
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  var warnings = []
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  for (var i = 0; i < versionRequirements.length; i++) {
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    var mod = versionRequirements[i]
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    if (!semver.satisfies(mod.currentVersion, mod.versionRequirement)) {
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      warnings.push(mod.name + ': ' +
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        chalk.red(mod.currentVersion) + ' should be ' +
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        chalk.green(mod.versionRequirement)
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      )
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    }
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  }
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  if (warnings.length) {
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    console.log('')
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    console.log(chalk.yellow('To use this template, you must update following to modules:'))
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    console.log()
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    for (var i = 0; i < warnings.length; i++) {
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      var warning = warnings[i]
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      console.log('  ' + warning)
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    }
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    console.log()
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    process.exit(1)
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  }
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}
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