chore(*): Add checks in case setter is invoked before ViewInit.

Author: MKirova

projects/igniteui-angular/src/lib/slider/slider.component.ts

@@ -389,7 +389,9 @@ export class IgxSliderComponent implements
         }
 
         this._continuous = continuous;
-        this.setTickInterval(null);
+        if (this._hasViewInit) {
+            this.setTickInterval(null);
+        }
     }
 
     /**
@@ -457,7 +459,9 @@ export class IgxSliderComponent implements
         // recalculate step distance.
         this.stepDistance = this.calculateStepDistance();
         this.positionHandlesAndUpdateTrack();
-        this.setTickInterval(null);
+        if (this._hasViewInit) {
+            this.setTickInterval(null);
+        }
     }
 
     /**
@@ -503,7 +507,9 @@ export class IgxSliderComponent implements
         // Recalculate step distance.
         this.stepDistance = this.calculateStepDistance();
         this.positionHandlesAndUpdateTrack();
-        this.setTickInterval(null);
+        if (this._hasViewInit) {
+            this.setTickInterval(null);
+        }
     }
 
     /**
@@ -1072,7 +1078,9 @@ export class IgxSliderComponent implements
             this.positionHandle(this.thumbFrom, this.labelFrom, (this.value as IRangeSliderValue).lower);
         }
 
-        this.updateTrack();
+        if (this._hasViewInit) {
+            this.updateTrack();
+        }
     }
 
     private closestHandle(event: PointerEvent) {