fix(@angular/cli): Show detailed help for ng new --help

Author: Brocco

packages/@angular/cli/commands/help.ts

@@ -67,7 +67,9 @@ const HelpCommand = Command.extend({
           if (commandOptions.short) {
             this.ui.writeLine(command.printShortHelp(commandOptions));
           } else if (command.printDetailedHelp(commandOptions, rawArgs)) {
+            this.ui.writeLine('cool');
             const result = command.printDetailedHelp(commandOptions, rawArgs);
+            this.ui.writeLine('not cool', result);
             if (result instanceof Promise) {
               result.then(r => this.ui.writeLine(r));
             } else {

packages/@angular/cli/commands/new.ts

@@ -3,9 +3,13 @@ import * as path from 'path';
 import chalk from 'chalk';
 
 import { CliConfig } from '../models/config';
+import { getCollection, getEngineHost } from '../utilities/schematics';
 import { validateProjectName } from '../utilities/validate-project-name';
 import { oneLine } from 'common-tags';
 import { SchematicAvailableOptions } from '../tasks/schematic-get-options';
+import { outputFile } from 'fs-extra';
+
+const { cyan, yellow } = chalk;
 
 const Command = require('../ember-cli/lib/models/command');
 const SilentError = require('silent-error');
@@ -153,6 +157,28 @@ const NewCommand = Command.extend({
     commandOptions.skipGit = commandOptions.skipGit === undefined ? false : commandOptions.skipGit;
 
     return initTask.run(commandOptions, rawArgs);
+  },
+
+  printDetailedHelp: function (): string | Promise<string> {
+    const collectionName = this.getCollectionName();
+    const schematicName = CliConfig.getValue('defaults.schematics.newApp');
+    const SchematicGetHelpOutputTask = require('../tasks/schematic-get-help-output').default;
+    const getHelpOutputTask = new SchematicGetHelpOutputTask({
+      ui: this.ui,
+      project: this.project
+    });
+    return getHelpOutputTask.run({
+      schematicName,
+      collectionName,
+      nonSchematicOptions: this.availableOptions.filter((o: any) => !o.hidden)
+    })
+    .then((output: string[]) => {
+      const outputLines = [
+        cyan(`ng new ${cyan('[name]')} ${cyan('<options...>')}`),
+        ...output
+      ];
+      return outputLines.join('\n');
+    });
   }
 });
 

packages/@angular/cli/tasks/schematic-get-help-output.ts

@@ -6,6 +6,7 @@ const { cyan, grey } = chalk;
 export interface SchematicGetHelpOptions {
   collectionName: string;
   schematicName: string;
+  nonSchematicOptions: any[];
 }
 
 export interface SchematicAvailableOptions {
@@ -18,21 +19,21 @@ export interface SchematicAvailableOptions {
 }
 
 export default Task.extend({
-  run: function ({schematicName, collectionName}: SchematicGetHelpOptions):
-    Promise<SchematicAvailableOptions[]> {
+  run: function ({schematicName, collectionName, nonSchematicOptions}: SchematicGetHelpOptions):
+    Promise<string[]> {
 
     const SchematicGetOptionsTask = require('./schematic-get-options').default;
     const getOptionsTask = new SchematicGetOptionsTask({
       ui: this.ui,
       project: this.project
     });
-    return getOptionsTask.run({
+    return Promise.all([getOptionsTask.run({
       schematicName: schematicName,
       collectionName: collectionName,
-    })
-    .then((availableOptions: SchematicAvailableOptions[]) => {
+    }), nonSchematicOptions])
+    .then(([availableOptions, nonSchematicOptions]: [SchematicAvailableOptions[], any[]]) => {
       const output: string[] = [];
-      availableOptions
+      [...(nonSchematicOptions || []), ...availableOptions]
         .filter(opt => opt.name !== 'name')
         .forEach(opt => {
           let text = cyan(`    --${opt.name}`);
@@ -48,7 +49,7 @@ export default Task.extend({
           output.push(text);
           if (opt.aliases && opt.aliases.length > 0) {
             const aliasText = opt.aliases.reduce(
-              (acc, curr) => {
+              (acc: string, curr: string) => {
                 return acc + ` -${curr}`;
               },
               '');