fixup! fix(material-experimental/mdc-slider): code review changes

Author: wagnermaciel

src/material-experimental/mdc-slider/slider.ts

@@ -23,6 +23,7 @@ import {
   Directive,
   ElementRef,
   EventEmitter,
+  forwardRef,
   Inject,
   Injectable,
   Input,
@@ -111,7 +112,7 @@ export class MatSliderVisualThumb implements AfterViewInit, OnDestroy {
 
   constructor(
     private readonly _ngZone: NgZone,
-    private readonly _slider: MatSlider,
+    @Inject(forwardRef(() => MatSlider)) private readonly _slider: MatSlider,
     private readonly _elementRef: ElementRef<HTMLElement>) {}
 
   ngAfterViewInit() {
@@ -260,7 +261,6 @@ export class MatSliderVisualThumb implements AfterViewInit, OnDestroy {
     multi: true
   }],
 })
-@Injectable()
 export class MatSliderThumb implements AfterViewInit, ControlValueAccessor {
 
   // ** IMPORTANT NOTE **
@@ -333,7 +333,7 @@ export class MatSliderThumb implements AfterViewInit, ControlValueAccessor {
 
   constructor(
     @Inject(DOCUMENT) document: any,
-    private readonly _slider: MatSlider,
+    @Inject(forwardRef(() => MatSlider)) private readonly _slider: MatSlider,
     private readonly _elementRef: ElementRef<HTMLInputElement>) {
       this._document = document;
       this._hostElement = _elementRef.nativeElement;
@@ -455,7 +455,6 @@ export class MatSliderThumb implements AfterViewInit, ControlValueAccessor {
 
 // Boilerplate for applying mixins to MatSlider.
 /** @docs-private */
-@Injectable()
 class MatSliderBase {
   constructor(public _elementRef: ElementRef<HTMLElement>) {}
 }