refactor(): correct folder structure issues on lib modules

* Simplified the inner folder structure
* Remove inner modules in extensions lib
* Expose nested modules by directly pointing
instead of using barrels.
See ng-packagr/ng-packagr/issues/195#issuecomment-342951630

projects/extensions/src/lib/common/common.module.ts

@@ -1,9 +1,11 @@
 import { NgModule } from '@angular/core';
 
-import { NgxLetModule, NgxRepeatModule } from './directives';
-import { NgxNestedValueModule } from './pipes';
+import { NgxLet } from './let/let.directive';
+import { NgxeRepeat } from './repeat/repeat.directive';
+import { NgxNestedValuePipe } from './nested-value/nested-value.pipe';
 
 @NgModule({
-  exports: [NgxLetModule, NgxRepeatModule, NgxNestedValueModule]
+  declarations: [NgxLet, NgxeRepeat, NgxNestedValuePipe],
+  exports: [NgxLet, NgxeRepeat, NgxNestedValuePipe]
 })
 export class NgxCommonModule {}

projects/extensions/src/lib/common/directives/let/let.directive.spec.ts → projects/extensions/src/lib/common/let/let.directive.spec.ts

@@ -3,7 +3,7 @@ import { ComponentFixture, TestBed, async } from '@angular/core/testing';
 import { By } from '@angular/platform-browser';
 import { Observable, Subject } from 'rxjs';
 
-import { NgxLetModule } from './let.module';
+import { NgxLet } from './let.directive';
 
 @Component({ selector: 'ngx-test-cmp', template: '' })
 class TestComponent {
@@ -35,8 +35,7 @@ describe('NgxLet', () => {
 
   beforeEach(() => {
     TestBed.configureTestingModule({
-      declarations: [TestComponent],
-      imports: [NgxLetModule]
+      declarations: [TestComponent, NgxLet]
     });
   });
 

projects/extensions/src/lib/common/public-api.ts

@@ -1,3 +1,4 @@
 export * from './common.module';
-export * from './directives';
-export * from './pipes';
+export * from './let/let.directive';
+export * from './repeat/repeat.directive';
+export * from './nested-value/nested-value.pipe';

projects/extensions/src/lib/router/public-api.ts

@@ -1,2 +1,4 @@
 export * from './router.module';
-export * from './parametrised-router-link';
+export * from './parametrised-router-link/parametrised-link-evaluator';
+export * from './parametrised-router-link/parametrised-router-link.directive';
+export * from './parametrised-router-link/route-parametrised-link-evaluator';

projects/extensions/src/lib/router/router.module.ts

@@ -1,11 +1,13 @@
 import { NgModule, ModuleWithProviders, Provider } from '@angular/core';
 
 import {
-  NGX_EVALUATION_OPTIONS,
-  DefaultEvaluationOptions,
   NgxParametrisedRouterLinkWithHrefDirective,
   NgxParametrisedRouterLinkDirective
-} from './parametrised-router-link';
+} from './parametrised-router-link/parametrised-router-link.directive';
+import {
+  NGX_EVALUATION_OPTIONS,
+  DefaultEvaluationOptions
+} from './parametrised-router-link/parametrised-link-evaluator';
 
 export interface NgxRouterModuleConfig {
   evaluationOptions?: Provider;

projects/extensions/src/public_api.ts

@@ -1,6 +1,6 @@
 /*
- * Public API Surface of ngx-extensions
+ * Public API Surface of @ngx-extensions/extensions
  */
 
-export * from './lib/common';
-export * from './lib/router';
+export * from './lib/common/index';
+export * from './lib/router/index';

projects/screenfull/src/public_api.ts

@@ -1,5 +1,5 @@
 /*
- * Public API Surface of screenfull
+ * Public API Surface of @ngx-extensions/screenfull
  */
 
 export * from './lib/screenfull.module';