generator-azure-web-app/scripts/pack.js

Minimalist Web App generator: Webpack/Rollup + React + Express, deployable to vanilla Node.js, Azure App Service, and IIS

'use strict';

const config       = require('../config');
const ChildProcess = require('child_process');
const del          = require('del');
const fs           = require('fs');
const os           = require('os');
const path         = require('path');
const Promise      = require('bluebird');

const { formatIISParameters, log, prettyPath } = require('./util');

const exec   = Promise.promisify(ChildProcess.exec);
const mkdirp = Promise.promisify(require('mkdirp'));
const stat   = Promise.promisify(fs.stat);

module.exports = function (gulp) {
  gulp.task('pack', ['pack:iisapp']);
  gulp.task('pack:prepare', packPrepare);
  gulp.task('pack:iisapp', ['pack:prepare'], packIISApp);

  gulp.task('repack', ['repack:iisapp']);
  gulp.task('repack:iisapp', ['repack:prepare', 'rebuild'], packIISApp);

  function packPrepare() {
    return Promise.all([
      mkdirp(path.dirname(config.DEST_PACKAGE_FILE))
        .catch(err => {
          log('pack:prepare', `Failed to create output directory at ${ prettyPath(config.DEST_PACKAGE_FILE) }`);
          return Promise.reject(err);
        }),
      stat(config.DEST_WEBSITE_DIR)
        .catch(err => {
          log('pack:prepare', `No files were found to pack at ${ prettyPath(config.DEST_WEBSITE_DIR) }, please run "npm run build" first.`)
          return Promise.reject(err);
        }),
      stat(config.MSDEPLOY_BIN_FILE)
        .catch(err => {
          log('pack:prepare', `MSDeploy not found at ${ prettyPath(config.MSDEPLOY_BIN_FILE) }`);
          return Promise.reject(err);
        })
    ]);
  }

  function runMSDeploy(src, dest) {
    if (os.platform() !== 'win32') {
      return Promise.reject(new Error('MSDeploy is only supported on Windows platform'));
    }

    return (
      exec([
        `"${ config.MSDEPLOY_BIN_FILE }"`,
        '-verb:sync',
        `-source:iisApp=${ src }`,
        `-dest:package=${ dest }`,
        `-declareParam:${ formatIISParameters(config.MSDEPLOY_IIS_PARAMETERS) }`
      ].join(' '), {
        maxBuffer: 10485760
      })
    );
  }

  function packIISApp() {
    log('pack:iisapp', `Packing from ${ prettyPath(config.DEST_WEBSITE_DIR) } to ${ prettyPath(config.DEST_PACKAGE_FILE) }`);

    return runMSDeploy(config.DEST_WEBSITE_DIR, config.DEST_PACKAGE_FILE);
  }
};