fix: add skipInstall option to ng-new (#223)

Author: sis0k0

src/ng-new/index.ts

@@ -4,6 +4,7 @@ import {
   chain,
   schematic,
   SchematicContext,
+  TaskId,
 } from '@angular-devkit/schematics';
 
 import { Schema as ApplicationOptions } from './application/schema';
@@ -28,9 +29,13 @@ export default function(options: NgNewOptions): Rule {
       }
     },
     (_tree: Tree, context: SchematicContext) => {
-      const packageTask = context.addTask(new NodePackageInstallTask(options.name));
+      const dependencies: Array<TaskId> = [];
+
+      if (!options.skipInstall) {
+        const packageInstallTask = context.addTask(new NodePackageInstallTask(options.name));
+        dependencies.push(packageInstallTask);
+      }
 
-      const dependencies = [packageTask];
       context.addTask(new RepositoryInitializerTask(options.name, {}), dependencies);
     },
   ]);
@@ -51,7 +56,6 @@ const parseToSharedOptions = (options: NgNewOptions): SharedOptions => {
 const parseToApplicationOptions = (options: NgNewOptions): ApplicationOptions => {
   return {
     name: options.name,
-
     prefix: options.prefix,
     sourceDir: options.sourceDir || 'app',
     style: options.style,

src/ng-new/schema.d.ts

@@ -35,4 +35,8 @@ export interface Schema {
      * Skip adding an example component.
      */
     skipAutoGeneratedComponent?: boolean;
+    /**
+     * When true, does not install packages for dependencies.
+     */
+    skipInstall?: boolean;
 }

src/ng-new/schema.json

@@ -52,6 +52,11 @@
       "type": "boolean",
       "description": "Specifies whether a sample master detail should be generated.",
       "default": false
+    },
+    "skipInstall": {
+      "description": "When true, does not install packages for dependencies.",
+      "type": "boolean",
+      "default": false
     }
   },
   "required": [