build: remove es2015 workaround (#14066)

With two commits (2adced1 and a22a9fa), we recently tried to add a workaround for an Angular bug that causes Angular Material to not work w/ ES2015. The workaround technically worked but had to be partially reverted because Google Closure compiler was no longer able to remove unused classes (due to a function with side-effects that modified the actual component metadata). Since the workaround (in the state it is right now) is not helping at all and a fix will land with Angular `v7.1.0` (angular/angular@95743e3)

Closes #12760

Author: devversion

src/lib/input/autosize.ts

@@ -43,7 +43,3 @@ export class MatTextareaAutosize extends CdkTextareaAutosize {
   get matTextareaAutosize(): boolean { return this.enabled; }
   set matTextareaAutosize(value: boolean) { this.enabled = value; }
 }
-
-// TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatTextareaAutosize as any)['ctorParameters'] = () =>
-    (CdkTextareaAutosize as any)['ctorParameters'];

src/lib/stepper/step-label.ts

@@ -13,6 +13,3 @@ import {CdkStepLabel} from '@angular/cdk/stepper';
   selector: '[matStepLabel]',
 })
 export class MatStepLabel extends CdkStepLabel {}
-
-// TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatStepLabel as any)['ctorParameters'] = () => (CdkStepLabel as any)['ctorParameters'];

src/lib/stepper/stepper-button.ts

@@ -33,8 +33,3 @@ export class MatStepperNext extends CdkStepperNext {}
   providers: [{provide: CdkStepper, useExisting: MatStepper}]
 })
 export class MatStepperPrevious extends CdkStepperPrevious {}
-
-// TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatStepperNext as any)['ctorParameters'] = () => (CdkStepperNext as any)['ctorParameters'];
-(MatStepperPrevious as any)['ctorParameters'] = () =>
-    (CdkStepperPrevious as any)['ctorParameters'];

src/lib/stepper/stepper.ts

@@ -123,9 +123,6 @@ export class MatStepper extends CdkStepper implements AfterContentInit {
   }
 }
 
-// TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatStepper as any)['ctorParameters'] = () => (CdkStepper as any)['ctorParameters'];
-
 @Component({
   moduleId: module.id,
   selector: 'mat-horizontal-stepper',

src/lib/table/cell.ts

@@ -45,11 +45,6 @@ export class MatHeaderCellDef extends CdkHeaderCellDef {}
 })
 export class MatFooterCellDef extends CdkFooterCellDef {}
 
-// TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatCellDef as any)['ctorParameters'] = () => (CdkCellDef as any)['ctorParameters'];
-(MatHeaderCellDef as any)['ctorParameters'] = () => (CdkHeaderCellDef as any)['ctorParameters'];
-(MatFooterCellDef as any)['ctorParameters'] = () => (MatFooterCellDef as any)['ctorParameters'];
-
 /**
  * Column definition for the mat-table.
  * Defines a set of cells available for a table column.

src/lib/table/row.ts

@@ -54,11 +54,6 @@ export class MatFooterRowDef extends CdkFooterRowDef {}
 })
 export class MatRowDef<T> extends CdkRowDef<T> {}
 
-// TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatHeaderRowDef as any)['ctorParameters'] = () => (CdkHeaderRowDef as any)['ctorParameters'];
-(MatFooterRowDef as any)['ctorParameters'] = () => (CdkFooterRowDef as any)['ctorParameters'];
-(MatRowDef as any)['ctorParameters'] = () => (CdkRowDef as any)['ctorParameters'];
-
 /** Footer template container that contains the cell outlet. Adds the right class and role. */
 @Component({
   moduleId: module.id,

src/lib/table/table.ts

@@ -28,6 +28,3 @@ export class MatTable<T> extends CdkTable<T> {
   /** Overrides the sticky CSS class set by the `CdkTable`. */
   protected stickyCssClass = 'mat-table-sticky';
 }
-
-// TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatTable as any)['ctorParameters'] = () => (CdkTable as any)['ctorParameters'];

src/lib/tabs/tab-label.ts

@@ -14,6 +14,3 @@ import {CdkPortal} from '@angular/cdk/portal';
   selector: '[mat-tab-label], [matTabLabel]',
 })
 export class MatTabLabel extends CdkPortal {}
-
-// TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatTabLabel as any)['ctorParameters'] = () => (CdkPortal as any)['ctorParameters'];

src/lib/tree/node.ts

@@ -76,9 +76,6 @@ export class MatTreeNodeDef<T> extends CdkTreeNodeDef<T> {
   @Input('matTreeNode') data: T;
 }
 
-// TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatTreeNodeDef as any)['ctorParameters'] = () => (CdkTreeNodeDef as any)['ctorParameters'];
-
 /**
  * Wrapper for the CdkTree nested node with Material design styles.
  */

src/lib/tree/padding.ts

@@ -23,7 +23,3 @@ export class MatTreeNodePadding<T> extends CdkTreeNodePadding<T> {
   /** The indent for each level. Default number 40px from material design menu sub-menu spec. */
   @Input('matTreeNodePaddingIndent') indent: number;
 }
-
-// TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatTreeNodePadding as any)['ctorParameters'] = () =>
-    (CdkTreeNodePadding as any)['ctorParameters'];