2 const chalk = require('chalk')
3 const semver = require('semver')
4 const packageConfig = require('../package.json')
5 const shell = require('shelljs')
8 return require('child_process').execSync(cmd).toString().trim()
11 const versionRequirements = [
14 currentVersion: semver.clean(process.version),
15 versionRequirement: packageConfig.engines.node
19 if (shell.which('npm')) {
20 versionRequirements.push({
22 currentVersion: exec('npm --version'),
23 versionRequirement: packageConfig.engines.npm
27 module.exports = function () {
30 for (let i = 0; i < versionRequirements.length; i++) {
31 const mod = versionRequirements[i]
33 if (!semver.satisfies(mod.currentVersion, mod.versionRequirement)) {
34 warnings.push(mod.name + ': ' +
35 chalk.red(mod.currentVersion) + ' should be ' +
36 chalk.green(mod.versionRequirement)
41 if (warnings.length) {
43 console.log(chalk.yellow('To use this template, you must update following to modules:'))
46 for (let i = 0; i < warnings.length; i++) {
47 const warning = warnings[i]
48 console.log(' ' + warning)