chore(help): add completion to help (angular#2483)

Author: filipesilva

packages/angular-cli/commands/completion.js

@@ -0,0 +1,18 @@
+import * as path from 'path';
+import * as fs from 'fs';
+
+const Command = require('ember-cli/lib/models/command');
+
+const CompletionCommand = Command.extend({
+  name: 'completion',
+  description: 'Adds autocomplete functionality to `ng` commands and subcommands',
+  works: 'everywhere',
+  run: function() {
+    const scriptPath = path.resolve(__dirname, '..', 'utilities', 'completion.sh');
+    const scriptOutput = fs.readFileSync(scriptPath, 'utf8');
+
+    console.log(scriptOutput);
+  }
+});
+
+export default CompletionCommand;

packages/angular-cli/commands/completion.ts

@@ -6,10 +6,8 @@ const stringUtils = require('ember-cli-string-utils');
 const lookupCommand = require('ember-cli/lib/cli/lookup-command');
 
 const commandsToIgnore = [
-  'help',
   'easter-egg',
-  'completion',
-  'github-pages-deploy'
+  'github-pages-deploy' // errors because there is no base github-pages command
 ];
 
 const HelpCommand = Command.extend({
@@ -21,8 +19,8 @@ const HelpCommand = Command.extend({
 
   run: function (commandOptions: any) {
     let commandFiles = fs.readdirSync(__dirname)
-      // Remove files that are not JavaScript
-      .filter(file => file.match(/\.js$/))
+      // Remove files that are not JavaScript or Typescript
+      .filter(file => file.match(/\.(j|t)s$/) && !file.match(/\.d.ts$/))
       .map(file => path.parse(file).name)
       .map(file => file.toLowerCase());