How come Drupal Console is not downloading all commands?

Question

When adding Drupal Console using Composer, we are finding that the list of commands is not complete. How can I resolve the issue?

Installation steps:

1. change to root directory (/local/path/drupal-site)
2. run composer require drupal/console:~1.0 --prefer-dist --optimize-autoloader
3. run composer update drupal/console --with-dependencies

Steps to reproduce:

1. Change to either Change to drupal-site/vendor/bin/ or drupal-site/vendor/drupal/console/bin directory
2. run drupal generate:form
3. error message below is returned.
4. change to root directory (/local/path/drupal-site)
5. run vendor/bin/drupal generate:form
6. error message below is returned again.

[ERROR] Command "generate:form", is not a valid command name.

Versions:

1. Drupal core v8.5.5
2. Composer 1.6.3
3. Drupal console 1.8.0

output of drupal list

Answer 1

After spending hours on chasing this same issue, i quit and now use drush to create boilerplate stuff such as module, plugins etc. After you install drupal site via composer with --dev try the following.

./vendor/drush/drush/drush generate module-standard # other generate commands there as well