angular-cli: ng help generate: crashes on Angular 5.2.2

This is not fixed in 1.6.7:

ng --version

    _                      _                 ____ _     ___
   / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
  / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
 / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
/_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
               |___/

Angular CLI: 1.6.7
Node: 8.9.4
OS: win32 x64
Angular:
...

The behavior of the help generate command:

ng help generate
Cannot read property '0' of undefined
TypeError: Cannot read property '0' of undefined
    at Class.getCollectionName (D:\Users\harbmihi\AppData\Roaming\npm\node_modules\@angular\cli\commands\generate.js:57:36)
    at Class.printDetailedHelp (D:\Users\harbmihi\AppData\Roaming\npm\node_modules\@angular\cli\commands\generate.js:179:37)
    at commandFiles.forEach.cmd (D:\Users\harbmihi\AppData\Roaming\npm\node_modules\@angular\cli\commands\help.js:57:38)
    at Array.forEach (<anonymous>)
    at Class.run (D:\Users\harbmihi\AppData\Roaming\npm\node_modules\@angular\cli\commands\help.js:36:22)
    at resolve (D:\Users\harbmihi\AppData\Roaming\npm\node_modules\@angular\cli\ember-cli\lib\models\command.js:261:20)
    at new Promise (<anonymous>)
    at Class.validateAndRun (D:\Users\harbmihi\AppData\Roaming\npm\node_modules\@angular\cli\ember-cli\lib\models\command.js:240:12)
    at Promise.resolve.then.then (D:\Users\harbmihi\AppData\Roaming\npm\node_modules\@angular\cli\ember-cli\lib\cli\cli.js:140:24)
    at <anonymous>

Still occurs on 1.7.0-rc.0

Angular CLI: 1.7.0-rc.0
Node: 8.6.0
OS: darwin x64
Angular: 6.0.0-beta.1
... common, compiler, compiler-cli, core, forms, http
... language-service, platform-browser, platform-browser-dynamic
... router

@angular/animations: 6.0.0-beta.2
@angular/cdk: 5.0.1
@angular/cli: 1.7.0-rc.0
@angular/material: 5.0.1
@angular-devkit/build-optimizer: 0.3.1
@angular-devkit/core: 0.3.1
@angular-devkit/schematics: 0.3.1
@ngtools/json-schema: 1.2.0
@ngtools/webpack: 1.10.0-rc.0
@schematics/angular: 0.3.1
@schematics/package-update: 0.3.1
typescript-collections: 1.2.5
typescript: 2.6.2
webpack: 3.10.0

Really missing this functionality in IntelliJ ._.

Noticed this issue too because Webstorm is using this command to know the available things that generate can do. This issue seems to only exists on @angular/cli==1.6.6; because when i downgrade to @angular/cli==1.6.5 the issue doesn’t occur anymore.

Still occurs with 1.6.8

/_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
               |___/

Angular CLI: 1.6.8
Node: 8.9.3
OS: win32 x64
Angular: 4.4.6
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router, tsc-wrapped

@angular/cli: 1.6.8
@angular/service-worker: 1.0.0-beta.16
@angular-devkit/build-optimizer: 0.0.42
@angular-devkit/core: 0.0.29
@angular-devkit/schematics: 0.0.52
@ngtools/json-schema: 1.1.0
@ngtools/webpack: 1.9.8
@schematics/angular: 0.1.17
typescript: 2.3.4
webpack: 3.10.0

C:\Projects\Fdc.web>ng help generate
Cannot read property '0' of undefined
TypeError: Cannot read property '0' of undefined

Dennis from WebStorm team here. I can confirm that this fails with the same output for me. We’ll be releasing WebStorm 2017.3.4 with a workaround (loading predefined list if the command fails), but would love to get a proper fix.