generator-bannertime/generators/app/modules/checkVersion.js

Yeoman generator for creating HTML5 advertising campaigns

/**
 * Check for newer versions of the generator.
 */

const chalk = require('chalk');
const info = require('package-info');
const repeating = require('repeating');
const stringLength = require('string-length');
const pkg = require('../../../package.json');

module.exports = function checkVersion() {
  const done = this.async();

  info(pkg.name).then((npm) => {
    const newVer = chalk.red.bold(`${npm.version}`);
    const currentVer = chalk.dim(`current: ${pkg.version}`);
    const install = chalk.red(`npm install -g ${pkg.name}`);
    const line1 = ` Update available: ${newVer} ${currentVer} `;
    const line2 = ` Run ${install} to update. `;
    const contentWidth = Math.max(stringLength(line1), stringLength(line2));
    const line1rest = contentWidth - stringLength(line1);
    const line2rest = contentWidth - stringLength(line2);
    const top = chalk.red(`┌${repeating(contentWidth, '─')}┐`);
    const bottom = chalk.red(`└${repeating(contentWidth, '─')}┘`);
    const side = chalk.red('│');
    const message = `${top}\n` +
      `${side}${line1}${repeating(line1rest, ' ')}${side}\n` +
      `${side}${line2}${repeating(line2rest, ' ')}${side}\n` +
      `${bottom}\n`;

    if (npm.version > pkg.version) this.log(message);

    done();
  });
};