[Fix] Lerna should work on ./packages/**/dist/.

Lerna should only publish outcome of ng-packagr.
Configured Lerna to operate on the dist/ folder of a package.

generators/project-app/template/lerna.json

@@ -1,7 +1,7 @@
 {
   "lerna": "2.1.2",
   "packages": [
-    "packages/**/*"
+    "packages/**/dist/"
   ],
   "version": "independent"
 }

generators/project-app/template/scripts/build-packages.js

@@ -3,33 +3,36 @@ const path = require('path');
 const rimraf = require('rimraf');
 const ngPackagr = require('../node_modules/ng-packagr/lib/ng-packagr');
 
-process.env.DEBUG = true;
-
-function dirs(base) {
+/**
+ * @return List of sub-directories of `base` directory
+ */
+function subDirectories(base) {
     return fs
         .readdirSync(base)
         .map(file => path.resolve(base, file))
         .filter(file => fs.lstatSync(file).isDirectory());
 }
 
-var PATHS = [];
-const PACKAGE_SRC_DIR = path.resolve(__dirname, '../packages');
-const PACKAGES_OR_SCOPES = dirs(PACKAGE_SRC_DIR).forEach((dir) => {
-    PATHS = [...PATHS, dir, ...dirs(dir)];
-});
+let paths = [];
+let tasks = [];
 
-var PACKAGES = PATHS
-    .filter(file => fs.existsSync(path.resolve(file, 'ng-package.json')));
+const PACKAGE_DIR = path.resolve(__dirname, '../packages');
+const PACKAGES_OR_SCOPES = subDirectories(PACKAGE_DIR).forEach((dir) => {
+    paths = [...paths, dir, ...subDirectories(dir)];
+});
+const PACKAGES = paths.filter(dir => {
+    return fs.existsSync(path.resolve(dir, 'ng-package.json'))
+});
 
-let promise = Promise.resolve();
-let tasks = [];
-while (PACKAGES.length > 0) {
-    const package = PACKAGES.pop();
+for (let i = 0, len = PACKAGES.length; i < len; i++) {
+    const package = PACKAGES[i];
     const project = path.join(package, 'ng-package.json');
+
+    // delete previous dist
     rimraf.sync(path.join(package, 'dist'));
 
-    tasks.push(
-        ngPackagr.ngPackage({ project })
+    tasks.push(ngPackagr
+        .ngPackage({ project })
         .then(() => rimraf.sync(path.join(package, '.ng_build')))
         .catch((err) => {
             console.error(`Failed to package "${package}". Cause: `, err);