dio-cli/webpack/lib/check-versions.js

CLI for scaffolding dio-cli projects , 前端项目, 构建工具

var chalk = require("chalk");
var semver = require("semver");
var packageConfig = require("../../package.json");

function exec(cmd) {
  return require("child_process")
    .execSync(cmd)
    .toString()
    .trim();
}

var versionRequirements = [
  {
    name: "node",
    currentVersion: semver.clean(process.version),
    versionRequirement: packageConfig.engines.node
  },
  {
    name: "npm",
    currentVersion: exec("npm --version"),
    versionRequirement: packageConfig.engines.npm
  }
];

module.exports = function() {
  var warnings = [];
  for (var i = 0; i < versionRequirements.length; i++) {
    var mod = versionRequirements[i];
    if (!semver.satisfies(mod.currentVersion, mod.versionRequirement)) {
      warnings.push(
        mod.name +
          ": " +
          chalk.red(mod.currentVersion) +
          " should be " +
          chalk.green(mod.versionRequirement)
      );
    }
  }

  if (warnings.length) {
    console.log("");
    console.log(chalk.yellow("To use this template, you must update following to modules:"));
    console.log();
    for (var i = 0; i < warnings.length; i++) {
      var warning = warnings[i];
      console.log("  " + warning);
    }
    console.log();
    process.exit(1);
  }
};