diff --git a/src/app/modules/angular-slickgrid/extensions/__tests__/contextMenuExtension.spec.ts b/src/app/modules/angular-slickgrid/extensions/__tests__/contextMenuExtension.spec.ts
index 5cae9d12a..59fd92163 100644
--- a/src/app/modules/angular-slickgrid/extensions/__tests__/contextMenuExtension.spec.ts
+++ b/src/app/modules/angular-slickgrid/extensions/__tests__/contextMenuExtension.spec.ts
@@ -853,10 +853,7 @@ describe('contextMenuExtension', () => {
         const menuItemCommand = copyGridOptionsMock.contextMenu.commandItems.find((item: MenuCommandItem) => item.command === 'export-excel') as MenuCommandItem;
         menuItemCommand.action(new CustomEvent('change'), { command: 'export-excel', cell: 0, row: 0 } as any);
 
-        expect(excelExportSpy).toHaveBeenCalledWith({
-          filename: 'export',
-          format: FileType.xlsx,
-        });
+        expect(excelExportSpy).toHaveBeenCalled();
       });
 
       it('should call "exportToFile" with CSV set when the command triggered is "export-csv"', () => {
@@ -870,9 +867,7 @@ describe('contextMenuExtension', () => {
 
         expect(exportSpy).toHaveBeenCalledWith({
           delimiter: DelimiterType.comma,
-          filename: 'export',
           format: FileType.csv,
-          useUtf8WithBom: true
         });
       });
 
@@ -887,9 +882,7 @@ describe('contextMenuExtension', () => {
 
         expect(exportSpy).toHaveBeenCalledWith({
           delimiter: DelimiterType.tab,
-          filename: 'export',
           format: FileType.txt,
-          useUtf8WithBom: true
         });
       });
 
diff --git a/src/app/modules/angular-slickgrid/extensions/__tests__/gridMenuExtension.spec.ts b/src/app/modules/angular-slickgrid/extensions/__tests__/gridMenuExtension.spec.ts
index b62d506d4..21cce7130 100644
--- a/src/app/modules/angular-slickgrid/extensions/__tests__/gridMenuExtension.spec.ts
+++ b/src/app/modules/angular-slickgrid/extensions/__tests__/gridMenuExtension.spec.ts
@@ -662,10 +662,7 @@ describe('gridMenuExtension', () => {
         instance.onCommand.notify({ grid: gridStub, command: 'export-excel' }, new Slick.EventData(), gridStub);
 
         expect(onCommandSpy).toHaveBeenCalled();
-        expect(excelExportSpy).toHaveBeenCalledWith({
-          filename: 'export',
-          format: FileType.xlsx,
-        });
+        expect(excelExportSpy).toHaveBeenCalled();
       });
 
       it('should call "exportToFile" with CSV set when the command triggered is "export-csv"', () => {
@@ -678,9 +675,7 @@ describe('gridMenuExtension', () => {
         expect(onCommandSpy).toHaveBeenCalled();
         expect(exportSpy).toHaveBeenCalledWith({
           delimiter: DelimiterType.comma,
-          filename: 'export',
           format: FileType.csv,
-          useUtf8WithBom: true
         });
       });
 
@@ -694,9 +689,7 @@ describe('gridMenuExtension', () => {
         expect(onCommandSpy).toHaveBeenCalled();
         expect(exportSpy).toHaveBeenCalledWith({
           delimiter: DelimiterType.tab,
-          filename: 'export',
           format: FileType.txt,
-          useUtf8WithBom: true
         });
       });
 
diff --git a/src/app/modules/angular-slickgrid/extensions/contextMenuExtension.ts b/src/app/modules/angular-slickgrid/extensions/contextMenuExtension.ts
index b6d15d3e0..95e796910 100644
--- a/src/app/modules/angular-slickgrid/extensions/contextMenuExtension.ts
+++ b/src/app/modules/angular-slickgrid/extensions/contextMenuExtension.ts
@@ -230,9 +230,7 @@ export class ContextMenuExtension implements Extension {
             positionOrder: 51,
             action: () => this.exportService.exportToFile({
               delimiter: DelimiterType.comma,
-              filename: 'export',
               format: FileType.csv,
-              useUtf8WithBom: true,
             }),
           }
         );
@@ -250,10 +248,7 @@ export class ContextMenuExtension implements Extension {
             disabled: false,
             command: commandName,
             positionOrder: 52,
-            action: () => this.excelExportService.exportToExcel({
-              filename: 'export',
-              format: FileType.xlsx,
-            }),
+            action: () => this.excelExportService.exportToExcel(),
           }
         );
       }
@@ -272,9 +267,7 @@ export class ContextMenuExtension implements Extension {
             positionOrder: 53,
             action: () => this.exportService.exportToFile({
               delimiter: DelimiterType.tab,
-              filename: 'export',
               format: FileType.txt,
-              useUtf8WithBom: true,
             }),
           }
         );
diff --git a/src/app/modules/angular-slickgrid/extensions/gridMenuExtension.ts b/src/app/modules/angular-slickgrid/extensions/gridMenuExtension.ts
index 16ce1ab60..9bffd75f9 100644
--- a/src/app/modules/angular-slickgrid/extensions/gridMenuExtension.ts
+++ b/src/app/modules/angular-slickgrid/extensions/gridMenuExtension.ts
@@ -398,23 +398,16 @@ export class GridMenuExtension implements Extension {
         case 'export-csv':
           this.exportService.exportToFile({
             delimiter: DelimiterType.comma,
-            filename: 'export',
             format: FileType.csv,
-            useUtf8WithBom: true,
           });
           break;
         case 'export-excel':
-          this.excelExportService.exportToExcel({
-            filename: 'export',
-            format: FileType.xlsx,
-          });
+          this.excelExportService.exportToExcel();
           break;
         case 'export-text-delimited':
           this.exportService.exportToFile({
             delimiter: DelimiterType.tab,
-            filename: 'export',
             format: FileType.txt,
-            useUtf8WithBom: true,
           });
           break;
         case 'toggle-filter':
diff --git a/src/app/modules/angular-slickgrid/services/excelExport.service.ts b/src/app/modules/angular-slickgrid/services/excelExport.service.ts
index bcf6819e9..2d2c3b279 100644
--- a/src/app/modules/angular-slickgrid/services/excelExport.service.ts
+++ b/src/app/modules/angular-slickgrid/services/excelExport.service.ts
@@ -21,11 +21,16 @@ import {
 } from '../models/index';
 import { Constants } from '../constants';
 import { exportWithFormatterWhenDefined } from './export-utilities';
-import { addWhiteSpaces, getTranslationPrefix, mapMomentDateFormatWithFieldType, sanitizeHtmlToText, titleCase } from './utilities';
+import { addWhiteSpaces, deepCopy, getTranslationPrefix, mapMomentDateFormatWithFieldType, sanitizeHtmlToText, titleCase } from './utilities';
 
 // using external non-typed js libraries
 declare let $: any;
 
+const DEFAULT_EXPORT_OPTIONS: ExcelExportOption = {
+  filename: 'export',
+  format: FileType.xlsx
+};
+
 @Injectable()
 export class ExcelExportService {
   private _fileFormat = FileType.xlsx;
@@ -80,14 +85,14 @@ export class ExcelExportService {
    *
    * Example: exportToExcel({ format: FileType.csv, delimiter: DelimiterType.comma })
    */
-  exportToExcel(options: ExcelExportOption): Promise<boolean> {
+  exportToExcel(options?: ExcelExportOption): Promise<boolean> {
     if (!this._grid || !this._dataView) {
       throw new Error('[Angular-Slickgrid] it seems that the SlickGrid & DataView objects are not initialized did you forget to enable the grid option flag "enableExcelExport"?');
     }
 
     return new Promise((resolve, reject) => {
       this.onGridBeforeExportToExcel.next(true);
-      this._excelExportOptions = $.extend(true, {}, this._gridOptions.excelExportOptions, options);
+      this._excelExportOptions = deepCopy({ ...DEFAULT_EXPORT_OPTIONS, ...this._gridOptions.excelExportOptions, ...options });
       this._fileFormat = this._excelExportOptions.format || FileType.xlsx;
 
       // prepare the Excel Workbook & Sheet
diff --git a/src/app/modules/angular-slickgrid/services/export.service.ts b/src/app/modules/angular-slickgrid/services/export.service.ts
index 67fd059ed..3d1b28b89 100644
--- a/src/app/modules/angular-slickgrid/services/export.service.ts
+++ b/src/app/modules/angular-slickgrid/services/export.service.ts
@@ -5,6 +5,7 @@ import { Subject } from 'rxjs';
 
 import {
   Column,
+  DelimiterType,
   ExportOption,
   FileType,
   GridOption,
@@ -13,11 +14,18 @@ import {
 } from './../models/index';
 import { Constants } from './../constants';
 import { exportWithFormatterWhenDefined } from './export-utilities';
-import { addWhiteSpaces, getTranslationPrefix, htmlEntityDecode, sanitizeHtmlToText, titleCase } from './../services/utilities';
+import { addWhiteSpaces, deepCopy, getTranslationPrefix, htmlEntityDecode, sanitizeHtmlToText, titleCase } from './../services/utilities';
 
 // using external non-typed js libraries
 declare let $: any;
 
+const DEFAULT_EXPORT_OPTIONS: ExportOption = {
+  delimiter: DelimiterType.comma,
+  filename: 'export',
+  format: FileType.csv,
+  useUtf8WithBom: true,
+};
+
 @Injectable()
 export class ExportService {
   private _delimiter = ',';
@@ -72,14 +80,14 @@ export class ExportService {
    *
    * Example: exportToFile({ format: FileType.csv, delimiter: DelimiterType.comma })
    */
-  exportToFile(options: ExportOption): Promise<boolean> {
+  exportToFile(options?: ExportOption): Promise<boolean> {
     if (!this._grid || !this._dataView) {
       throw new Error('[Angular-Slickgrid] it seems that the SlickGrid & DataView objects are not initialized did you forget to enable the grid option flag "enableExcelExport"?');
     }
 
     return new Promise((resolve, reject) => {
       this.onGridBeforeExportToFile.next(true);
-      this._exportOptions = $.extend(true, {}, this._gridOptions.exportOptions, options);
+      this._exportOptions = deepCopy({ ...DEFAULT_EXPORT_OPTIONS, ...this._gridOptions.exportOptions, ...options });
       this._delimiter = this._exportOptions.delimiterOverride || this._exportOptions.delimiter || '';
       this._fileFormat = this._exportOptions.format || FileType.csv;