dropdown.ngfactory missing / AOT bug

Bug description:

I’ve tried to create an AOT build using angular-cli and ng-bootstrap. However, there appears to be an issue during AOT compilation generating an ngfactory for the dropdown component (see below).

Is anyone else able to AOT build with ng-bootstrap?

> ng build --target=${TARGET:-development} --environment=${ENVIRONMENT:-dev} --aot=${AOT:-false}

Could not start watchman; falling back to NodeWatcher for file system events.
Visit http://ember-cli.com/user-guide/#watchman for more info.
 13% building modules 28/113 modules 85 active ...rap/ng-bootstrap/dropdown/dropdown.jsresolve '../node_modules/@ng-bootstrap/ng-bootstrap/dropdown/dropdown.ngfactory' in '/Users/jr/dev/console/console/src/app'
  using description file: /Users/jr/dev/console/console/package.json (relative path: ./src/app)
    Field 'browser' doesn't contain a valid alias configuration
  after using description file: /Users/jr/dev/console/console/package.json (relative path: ./src/app)
    using description file: /Users/jr/dev/console/console/package.json (relative path: ./src/node_modules/@ng-bootstrap/ng-bootstrap/dropdown/dropdown.ngfactory)
      as directory
        /Users/jr/dev/console/console/src/node_modules/@ng-bootstrap/ng-bootstrap/dropdown/dropdown.ngfactory doesn't exist
      no extension
        Field 'browser' doesn't contain a valid alias configuration
        /Users/jr/dev/console/console/src/node_modules/@ng-bootstrap/ng-bootstrap/dropdown/dropdown.ngfactory doesn't exist
      .ts
        Field 'browser' doesn't contain a valid alias configuration
        /Users/jr/dev/console/console/src/node_modules/@ng-bootstrap/ng-bootstrap/dropdown/dropdown.ngfactory.ts doesn't exist
      .js
        Field 'browser' doesn't contain a valid alias configuration
        /Users/jr/dev/console/console/src/node_modules/@ng-bootstrap/ng-bootstrap/dropdown/dropdown.ngfactory.js doesn't exist

/Users/jr/dev/console/console/node_modules/webpack/lib/Compiler.js:220
                    if(err) return callback(err);
                    ^
TypeError: Cannot read property 'hash' of undefined
    at /Users/jr/dev/console/console/node_modules/angular-cli/tasks/build-webpack.js:35:26

Link to minimally-working plunker that reproduces the issue:

Not applicable

Version of Angular, ng-bootstrap, and Bootstrap:

Angular: 2.1

ng-bootstrap: 1.0.0-alpha.9

Bootstrap: 4.0.0-alpha.5

angular-cli: 1.0.0-beta.18

[pkozlowski-opensource]

I was able to reproduce with Angular 2.1.1 using https://github.com/pkozlowski-opensource/ng-bootstrap-aot

There is a mix of Angular bugs that we can work-around as well as few things that we’ve messed up… Sent #973 to fix both…

[spock123]

Dropdown factory also missing in my aot builds…

Angular 2.1.1 Webpack 2.1.0-beta.22 ng-bootstrap: Alpha 9

Both the Datepicker and Dropdown modules fail:

ERROR in ./compiled/src/app/components/shell/navigation/navigation.component.ngfactory.ts
Module not found: Error: Can't resolve '../../../../../node_modules/@ng-bootstrap/ng-bootstrap/dropdown/dropdown.ngfactory' in '/Users/spock/projects/branches/Iticket-Frontend/compiled/src/app/components/shell/navigation'
 @ ./compiled/src/app/components/shell/navigation/navigation.component.ngfactory.ts 19:0-111
 @ ./compiled/src/app/components/app.component.ngfactory.ts
 @ ./compiled/src/app/app.module.ngfactory.ts
 @ ./src/app/index.aot.ts

ERROR in [default] /Users/spock/projects/branches/Iticket-Frontend/compiled/node_modules/@ng-bootstrap/ng-bootstrap/datepicker/datepicker.ngfactory.ts:145:8 
Supplied parameters do not match any signature of call target.

ERROR in [default] /Users/spock/projects/branches/Iticket-Frontend/compiled/src/app/components/shell/navigation/navigation.component.ngfactory.ts:131:29 
Module ''*'' has no exported member 'Wrapper_NgbDropdown'.

ERROR in [default] /Users/spock/projects/branches/Iticket-Frontend/compiled/src/app/components/shell/navigation/navigation.component.ngfactory.ts:134:35 
Module ''*'' has no exported member 'Wrapper_NgbDropdownToggle'.

ERROR in [default] /Users/spock/projects/branches/Iticket-Frontend/compiled/src/app/components/shell/navigation/navigation.component.ngfactory.ts:929:29 
Module ''*'' has no exported member 'Wrapper_NgbDropdown'.

ERROR in [default] /Users/spock/projects/branches/Iticket-Frontend/compiled/src/app/components/shell/navigation/navigation.component.ngfactory.ts:932:35 
Module ''*'' has no exported member 'Wrapper_NgbDropdownToggle'.