Cleaned up repository and removed errors

src/app/custom-input.component.ts

@@ -0,0 +1,34 @@
+import {ControlValueAccessor, FormControl, ValidationErrors, Validator} from '@angular/forms';
+
+export abstract class CustomInputComponent implements ControlValueAccessor, Validator {
+  protected value: number;
+  protected parseError: boolean;
+  private propagateChange: (_: any) => void = () => {};
+  private propagateTouch: () => void = () => {};
+
+  // set initial value
+  public abstract writeValue(obj: any): void;
+
+  // register function to notify on change
+  public registerOnChange(fn: (_: any) => void): void {
+    this.propagateChange = fn;
+  }
+
+  // register function to notify on touch
+  public registerOnTouched(fn: () => void): void {
+    this.propagateTouch = fn;
+  }
+
+  // validates the form, returns null when valid else the validation object
+  public abstract validate(c: FormControl): ValidationErrors;
+
+  // on change
+  protected onChange(value: any): void {
+    this.propagateChange(this.value);
+  }
+
+  // on touch
+  protected onBlur(): void {
+    this.propagateTouch();
+  }
+}