tryForPromiseWithAll.js

'use strict';
const path = require('path');
const _ = require('lodash');
const titleize = require('titleize');
const humanizeString = require('humanize-string');
const readPkgUp = require('read-pkg-up');
const updateNotifier = require('update-notifier');
const Configstore = require('configstore');
const {namespaceToName} = require('yeoman-environment');
const getPkgVersion = require('./utils/packageHelper')
const latestVersion = require('latest-version');
/**
 * The router is in charge of handling `yo` different screens.
 * @constructor
 * @param  {Environment} env A yeoman environment instance
 * @param  {Insight} insight An insight instance
 * @param  {Configstore} [conf] An optional config store instance
 */
class Router {
  constructor(env, insight, conf) {
    const pkg = require('../package.json');
    this.routes = {};
    this.env = env;
    this.insight = insight;
    this.conf = conf || new Configstore(pkg.name, {
      generatorRunCount: {}
    });
  }
  /**
   * Update the available generators in the app
   * TODO: Move this function elsewhere, try to make it stateless.
   */
  updateAvailableGenerators() {
    this.generators = {};
    function asyncFunction(generator) {
        return new Promise((resolve,reject) => {
            if (!/:(app|all)$/.test(generator.namespace)) {
                resolve();
            }

            const {pkg} = readPkgUp.sync({cwd: path.dirname(generator.resolved)});

            if (!pkg) {
                resolve();
            }
            pkg.namespace = generator.namespace;
            pkg.appGenerator = true;
            pkg.prettyName = titleize(humanizeString(namespaceToName(generator.namespace)));
            getPkgVersion(pkg.name).then(version => {
                (async () => {
                    const latest = await latestVersion(pkg.name);
                    pkg.update = latest;
                    console.log(pkg.update);
                    if (pkg.update && pkg.version !== pkg.update) {
                        pkg.updateAvailable = true;
                    }
                    this.generators[pkg.name] = pkg;
                    resolve();
                })();
            })
        })
    };
   return Promise.all(
        // _.forEach(this.env.getGeneratorsMeta(), asyncFunction)
        // this.env.getGeneratorsMeta().map(generator => asyncFunction(generator))//
        Object.keys(this.env.getGeneratorsMeta()).map((key) => {
          asyncFunction(this.env.getGeneratorsMeta()[key]);
        })
    )
  }
}

module.exports = Router;

// this.env.getGeneratorsMeta() result
/**
{ 'karma:app': 
   { resolved: '/Users/admin/.nvm/versions/node/v8.9.4/lib/node_modules/generator-karma/app/index.js',
     namespace: 'karma:app' },
  '@voice/generator:app': 
   { resolved: '/Users/admin/.nvm/versions/node/v8.9.4/lib/node_modules/@voice/generator-generator/app/index.js',
     namespace: '@voice/generator:app' },
  '@voice/generator:subgenerator': 
   { resolved: '/Users/admin/.nvm/versions/node/v8.9.4/lib/node_modules/@voice/generator-generator/subgenerator/index.js',
     namespace: '@voice/generator:subgenerator' },
  'mocha:app': 
   { resolved: '/Users/admin/.nvm/versions/node/v8.9.4/lib/node_modules/generator-mocha/generators/app/index.js',
     namespace: 'mocha:app' },
  '@voice/angular:app': 
   { resolved: '/Users/admin/IFLYTEK/Voice/generator-angular/generators/app/index.js',
     namespace: '@voice/angular:app' },
  '@voice/angular:cli': 
   { resolved: '/Users/admin/IFLYTEK/Voice/generator-angular/generators/cli/index.js',
     namespace: '@voice/angular:cli' },
  '@voice/angular:voice': 
   { resolved: '/Users/admin/IFLYTEK/Voice/generator-angular/generators/voice/index.js',
     namespace: '@voice/angular:voice' } }
*/