diff --git a/karma.conf.ts b/karma.conf.ts
index d5d3164..67eba88 100644
--- a/karma.conf.ts
+++ b/karma.conf.ts
@@ -3,7 +3,6 @@ import * as path from 'path';
 import * as ForkTsCheckerWebpackPlugin from 'fork-ts-checker-webpack-plugin';
 
 export default config => {
-
   config.set({
     basePath: './',
     frameworks: ['mocha'],
diff --git a/src/currency-mask.config.ts b/src/currency-mask.config.ts
index 6e978d5..1e7bd05 100644
--- a/src/currency-mask.config.ts
+++ b/src/currency-mask.config.ts
@@ -1,15 +1,15 @@
 import {InjectionToken} from "@angular/core";
 
 export interface CurrencyMaskConfig {
-    align: string;
-    allowNegative: boolean;
-    allowZero: boolean;
-    decimal: string;
-    precision: number;
-    prefix: string;
-    suffix: string;
-    thousands: string;
-    nullable: boolean;
+  align: string;
+  allowNegative: boolean;
+  allowZero: boolean;
+  decimal: string;
+  precision: number;
+  prefix: string;
+  suffix: string;
+  thousands: string;
+  nullable: boolean;
 }
 
 export let CURRENCY_MASK_CONFIG = new InjectionToken<CurrencyMaskConfig>("currency.mask.config");
diff --git a/src/currency-mask.directive.ts b/src/currency-mask.directive.ts
index 4b219eb..6ba0e4e 100644
--- a/src/currency-mask.directive.ts
+++ b/src/currency-mask.directive.ts
@@ -1,26 +1,26 @@
 import {
-    AfterViewInit,
-    Directive,
-    DoCheck,
-    ElementRef,
-    forwardRef,
-    HostListener,
-    Inject,
-    KeyValueDiffer,
-    KeyValueDiffers,
-    Input,
-    OnInit,
-    Optional
+  AfterViewInit,
+  Directive,
+  DoCheck,
+  ElementRef,
+  forwardRef,
+  HostListener,
+  Inject,
+  KeyValueDiffer,
+  KeyValueDiffers,
+  Input,
+  OnInit,
+  Optional
 } from "@angular/core";
-import {ControlValueAccessor, NG_VALUE_ACCESSOR} from "@angular/forms";
 
+import {ControlValueAccessor, NG_VALUE_ACCESSOR} from "@angular/forms";
 import {CurrencyMaskConfig, CURRENCY_MASK_CONFIG} from "./currency-mask.config";
 import {InputHandler} from "./input.handler";
 
 export const CURRENCYMASKDIRECTIVE_VALUE_ACCESSOR: any = {
-    provide: NG_VALUE_ACCESSOR,
-    useExisting: forwardRef(() => CurrencyMaskDirective),
-    multi: true
+  provide: NG_VALUE_ACCESSOR,
+  useExisting: forwardRef(() => CurrencyMaskDirective),
+  multi: true,
 };
 
 @Directive({
@@ -29,103 +29,105 @@ export const CURRENCYMASKDIRECTIVE_VALUE_ACCESSOR: any = {
 })
 export class CurrencyMaskDirective implements AfterViewInit, ControlValueAccessor, DoCheck, OnInit {
 
-    @Input() options: any = {};
-
-    public inputHandler: InputHandler;
-    public keyValueDiffer: KeyValueDiffer<any, any>;
-
-    public optionsTemplate = {
-        align: "right",
-        allowNegative: true,
-        allowZero: true,
-        decimal: ".",
-        precision: 2,
-        prefix: "$ ",
-        suffix: "",
-        thousands: ",",
-        nullable: false
-    };
-
-    constructor(@Optional() @Inject(CURRENCY_MASK_CONFIG) private currencyMaskConfig: CurrencyMaskConfig, private elementRef: ElementRef, private keyValueDiffers: KeyValueDiffers) {
-        if (currencyMaskConfig) {
-            this.optionsTemplate = currencyMaskConfig;
-        }
-
-        this.keyValueDiffer = keyValueDiffers.find({}).create();
+  @Input() options: any = {};
+
+  public inputHandler: InputHandler;
+  public keyValueDiffer: KeyValueDiffer<any, any>;
+
+  public optionsTemplate = {
+      align: "right",
+      allowNegative: true,
+      allowZero: true,
+      decimal: ".",
+      precision: 2,
+      prefix: "$ ",
+      suffix: "",
+      thousands: ",",
+      nullable: false
+  };
+
+  constructor(@Optional() @Inject(CURRENCY_MASK_CONFIG) private currencyMaskConfig: CurrencyMaskConfig,
+                                                        private elementRef: ElementRef,
+                                                        private keyValueDiffers: KeyValueDiffers) {
+    if (currencyMaskConfig) {
+        this.optionsTemplate = currencyMaskConfig;
     }
 
-    ngAfterViewInit() {
-        this.elementRef.nativeElement.style.textAlign = this.options.align ? this.options.align : this.optionsTemplate.align;
-    }
+    this.keyValueDiffer = keyValueDiffers.find({}).create();
+  }
 
-    ngDoCheck() {
-        if (this.keyValueDiffer.diff(this.options)) {
-            this.elementRef.nativeElement.style.textAlign = this.options.align ? this.options.align : this.optionsTemplate.align;
-            this.inputHandler.updateOptions((<any>Object).assign({}, this.optionsTemplate, this.options));
-        }
-    }
+  ngAfterViewInit() {
+    this.elementRef.nativeElement.style.textAlign = this.options.align ? this.options.align : this.optionsTemplate.align;
+  }
 
-    ngOnInit() {
-        this.inputHandler = new InputHandler(this.elementRef.nativeElement, (<any>Object).assign({}, this.optionsTemplate, this.options));
+  ngDoCheck() {
+    if (this.keyValueDiffer.diff(this.options)) {
+      this.elementRef.nativeElement.style.textAlign = this.options.align ? this.options.align : this.optionsTemplate.align;
+      this.inputHandler.updateOptions((<any>Object).assign({}, this.optionsTemplate, this.options));
     }
+  }
 
-    @HostListener("blur", ["$event"])
-    handleBlur(event: any) {
-        this.inputHandler.getOnModelTouched().apply(event);
-    }
+  ngOnInit() {
+    this.inputHandler = new InputHandler(this.elementRef.nativeElement, (<any>Object).assign({}, this.optionsTemplate, this.options));
+  }
 
-    @HostListener("cut", ["$event"])
-    handleCut(event: any) {
-        if (!this.isChromeAndroid()) {
-            this.inputHandler.handleCut(event);
-        }
-    }
+  @HostListener("blur", ["$event"])
+  handleBlur(event: any) {
+    this.inputHandler.getOnModelTouched().apply(event);
+  }
 
-    @HostListener("input", ["$event"])
-    handleInput(event: any) {
-        if (this.isChromeAndroid()) {
-            this.inputHandler.handleInput(event);
-        }
+  @HostListener("cut", ["$event"])
+  handleCut(event: any) {
+    if (!this.isChromeAndroid()) {
+      this.inputHandler.handleCut(event);
     }
+  }
 
-    @HostListener("keydown", ["$event"])
-    handleKeydown(event: any) {
-        if (!this.isChromeAndroid()) {
-            this.inputHandler.handleKeydown(event);
-        }
+  @HostListener("input", ["$event"])
+  handleInput(event: any) {
+    if (this.isChromeAndroid()) {
+      this.inputHandler.handleInput(event);
     }
+  }
 
-    @HostListener("keypress", ["$event"])
-    handleKeypress(event: any) {
-        if (!this.isChromeAndroid()) {
-            this.inputHandler.handleKeypress(event);
-        }
+  @HostListener("keydown", ["$event"])
+  handleKeydown(event: any) {
+    if (!this.isChromeAndroid()) {
+      this.inputHandler.handleKeydown(event);
     }
+  }
 
-    @HostListener("paste", ["$event"])
-    handlePaste(event: any) {
-        if (!this.isChromeAndroid()) {
-            this.inputHandler.handlePaste(event);
-        }
+  @HostListener("keypress", ["$event"])
+  handleKeypress(event: any) {
+    if (!this.isChromeAndroid()) {
+      this.inputHandler.handleKeypress(event);
     }
+  }
 
-    isChromeAndroid(): boolean {
-        return /chrome/i.test(navigator.userAgent) && /android/i.test(navigator.userAgent);
+  @HostListener("paste", ["$event"])
+  handlePaste(event: any) {
+    if (!this.isChromeAndroid()) {
+      this.inputHandler.handlePaste(event);
     }
+  }
 
-    registerOnChange(callbackFunction: Function): void {
-        this.inputHandler.setOnModelChange(callbackFunction);
-    }
+  isChromeAndroid(): boolean {
+    return /chrome/i.test(navigator.userAgent) && /android/i.test(navigator.userAgent);
+  }
 
-    registerOnTouched(callbackFunction: Function): void {
-        this.inputHandler.setOnModelTouched(callbackFunction);
-    }
+  registerOnChange(callbackFunction: Function): void {
+    this.inputHandler.setOnModelChange(callbackFunction);
+  }
 
-    setDisabledState(value: boolean): void {
-        this.elementRef.nativeElement.disabled = value;
-    }
+  registerOnTouched(callbackFunction: Function): void {
+    this.inputHandler.setOnModelTouched(callbackFunction);
+  }
 
-    writeValue(value: number): void {
-        this.inputHandler.setValue(value);
-    }
+  setDisabledState(value: boolean): void {
+    this.elementRef.nativeElement.disabled = value;
+  }
+
+  writeValue(value: number): void {
+    this.inputHandler.setValue(value);
+  }
 }
diff --git a/src/currency-mask.module.ts b/src/currency-mask.module.ts
index c2df17f..08b03ca 100644
--- a/src/currency-mask.module.ts
+++ b/src/currency-mask.module.ts
@@ -1,20 +1,11 @@
 import {NgModule} from '@angular/core';
 import {CommonModule} from '@angular/common';
 import {FormsModule} from '@angular/forms';
-
 import {CurrencyMaskDirective} from "./currency-mask.directive";
 
 @NgModule({
-    imports: [
-        CommonModule,
-        FormsModule
-    ],
-    declarations: [
-        CurrencyMaskDirective
-    ],
-    exports: [
-        CurrencyMaskDirective
-    ]
+  imports: [ CommonModule, FormsModule ],
+  declarations: [ CurrencyMaskDirective ],
+  exports: [ CurrencyMaskDirective ]
 })
-export class NgxCurrencyModule {
-}
+export class NgxCurrencyModule {}
diff --git a/src/input.manager.ts b/src/input.manager.ts
index 8b17a49..6782dfe 100644
--- a/src/input.manager.ts
+++ b/src/input.manager.ts
@@ -29,7 +29,8 @@ export class InputManager {
         let haventReachedMaxLength = !(this.rawValue.length >= this.htmlInputElement.maxLength && this.htmlInputElement.maxLength >= 0);
         let selectionStart = this.inputSelection.selectionStart;
         let selectionEnd = this.inputSelection.selectionEnd;
-        let haveNumberSelected = !!(selectionStart != selectionEnd && this.htmlInputElement.value.substring(selectionStart, selectionEnd).match(/[^0-9\u0660-\u0669\u06F0-\u06F9]/));
+        let haveNumberSelected = !!(selectionStart != selectionEnd &&
+                                    this.htmlInputElement.value.substring(selectionStart, selectionEnd).match(/[^0-9\u0660-\u0669\u06F0-\u06F9]/));
         let startWithZero = (this.htmlInputElement.value.substring(0, 1) == "0");
         return haventReachedMaxLength || haveNumberSelected || startWithZero;
     }
diff --git a/src/input.service.ts b/src/input.service.ts
index e75b2d5..d2f63a8 100644
--- a/src/input.service.ts
+++ b/src/input.service.ts
@@ -57,7 +57,11 @@ export class InputService {
             return "";
         }
 
-        let integerPart = onlyNumbers.slice(0, onlyNumbers.length - precision).replace(/^\u0660*/g, "").replace(/^\u06F0*/g, "").replace(/^0*/g, "").replace(/\B(?=([0-9\u0660-\u0669\u06F0-\u06F9]{3})+(?![0-9\u0660-\u0669\u06F0-\u06F9]))/g, thousands);
+        let integerPart = onlyNumbers.slice(0, onlyNumbers.length - precision)
+          .replace(/^\u0660*/g, "")
+          .replace(/^\u06F0*/g, "")
+          .replace(/^0*/g, "")
+          .replace(/\B(?=([0-9\u0660-\u0669\u06F0-\u06F9]{3})+(?![0-9\u0660-\u0669\u06F0-\u06F9]))/g, thousands);
 
         if (integerPart.startsWith(thousands)) {
             integerPart = integerPart.substring(1);