diff --git a/src/ecommerce.js b/src/ecommerce.ts
similarity index 69%
rename from src/ecommerce.js
rename to src/ecommerce.ts
index 1650a168d..c635c088d 100644
--- a/src/ecommerce.js
+++ b/src/ecommerce.ts
@@ -1,19 +1,48 @@
 import Types from './types';
 import Constants from './constants';
 import { extend } from './utils';
-
-var Messages = Constants.Messages;
-
-export default function Ecommerce(mpInstance) {
-    var self = this;
+import { IECommerce } from './ecommerce.interfaces';
+import { IMParticleWebSDKInstance } from './mp-instance';
+import {
+    ProductAction,
+    Product,
+    Promotion,
+    CommerceEvent,
+} from '@mparticle/event-models';
+import {
+    SDKEventAttrs,
+    SDKEventOptions,
+    TransactionAttributes,
+} from '@mparticle/web-sdk';
+import {
+    SDKEvent,
+    SDKEventCustomFlags,
+    SDKProduct,
+    SDKProductAction,
+    SDKProductImpression,
+    SDKPromotion,
+    SDKShoppingCart,
+} from './sdkRuntimeModels';
+import { valueof } from './utils';
+import { ProductActionType, PromotionActionType } from './types';
+
+const Messages = Constants.Messages;
+
+export default function Ecommerce(
+    this: IECommerce,
+    mpInstance: IMParticleWebSDKInstance
+): void {
+    const self = this;
+    const _self = self as { [K in keyof IECommerce]: Function };
 
     // https://go.mparticle.com/work/SQDSDKS-4801
-    this.convertTransactionAttributesToProductAction = function(
-        transactionAttributes,
-        productAction
-    ) {
+    _self.convertTransactionAttributesToProductAction = function(
+        this: IECommerce,
+        transactionAttributes: TransactionAttributes & { Step?: number; Option?: string },
+        productAction: ProductAction & SDKProductAction
+    ): void {
         if (transactionAttributes.hasOwnProperty('Id')) {
-            productAction.TransactionId = transactionAttributes.Id;
+            productAction.TransactionId = transactionAttributes.Id as string;
         }
         if (transactionAttributes.hasOwnProperty('Affiliation')) {
             productAction.Affiliation = transactionAttributes.Affiliation;
@@ -23,19 +52,19 @@ export default function Ecommerce(mpInstance) {
         }
         if (transactionAttributes.hasOwnProperty('Revenue')) {
             productAction.TotalAmount = this.sanitizeAmount(
-                transactionAttributes.Revenue,
+                transactionAttributes.Revenue as number,
                 'Revenue'
             );
         }
         if (transactionAttributes.hasOwnProperty('Shipping')) {
             productAction.ShippingAmount = this.sanitizeAmount(
-                transactionAttributes.Shipping,
+                transactionAttributes.Shipping as string,
                 'Shipping'
             );
         }
         if (transactionAttributes.hasOwnProperty('Tax')) {
             productAction.TaxAmount = this.sanitizeAmount(
-                transactionAttributes.Tax,
+                transactionAttributes.Tax as number,
                 'Tax'
             );
         }
@@ -47,7 +76,9 @@ export default function Ecommerce(mpInstance) {
         }
     };
 
-    this.getProductActionEventName = function(productActionType) {
+    this.getProductActionEventName = function(
+        productActionType: valueof<typeof ProductActionType>
+    ): string {
         switch (productActionType) {
             case Types.ProductActionType.AddToCart:
                 return 'AddToCart';
@@ -75,7 +106,9 @@ export default function Ecommerce(mpInstance) {
         }
     };
 
-    this.getPromotionActionEventName = function(promotionActionType) {
+    this.getPromotionActionEventName = function(
+        promotionActionType: valueof<typeof PromotionActionType>
+    ): string {
         switch (promotionActionType) {
             case Types.PromotionActionType.PromotionClick:
                 return 'PromotionClick';
@@ -86,7 +119,9 @@ export default function Ecommerce(mpInstance) {
         }
     };
 
-    this.convertProductActionToEventType = function(productActionType) {
+    _self.convertProductActionToEventType = function(
+        productActionType: valueof<typeof ProductActionType>
+    ): number | null {
         switch (productActionType) {
             case Types.ProductActionType.AddToCart:
                 return Types.CommerceEventType.ProductAddToCart;
@@ -123,7 +158,9 @@ export default function Ecommerce(mpInstance) {
         }
     };
 
-    this.convertPromotionActionToEventType = function(promotionActionType) {
+    _self.convertPromotionActionToEventType = function(
+        promotionActionType: valueof<typeof PromotionActionType>
+    ): number | null {
         switch (promotionActionType) {
             case Types.PromotionActionType.PromotionClick:
                 return Types.CommerceEventType.PromotionClick;
@@ -139,14 +176,20 @@ export default function Ecommerce(mpInstance) {
         }
     };
 
-    this.generateExpandedEcommerceName = function(eventName, plusOne) {
+    this.generateExpandedEcommerceName = function(
+        eventName: string,
+        plusOne: boolean
+    ): string {
         return (
             'eCommerce - ' + eventName + ' - ' + (plusOne ? 'Total' : 'Item')
         );
     };
 
     // https://go.mparticle.com/work/SQDSDKS-4801
-    this.extractProductAttributes = function(attributes, product) {
+    _self.extractProductAttributes = function(
+        attributes: Record<string, string | number>,
+        product: Product & SDKProduct
+    ): void {
         if (product.CouponCode) {
             attributes['Coupon Code'] = product.CouponCode;
         }
@@ -178,15 +221,21 @@ export default function Ecommerce(mpInstance) {
     };
 
     // https://go.mparticle.com/work/SQDSDKS-4801
-    this.extractTransactionId = function(attributes, productAction) {
+    _self.extractTransactionId = function(
+        attributes: Record<string, string | number>,
+        productAction: ProductAction & SDKProductAction
+    ): void {
         if (productAction.TransactionId) {
             attributes['Transaction Id'] = productAction.TransactionId;
         }
     };
 
     // https://go.mparticle.com/work/SQDSDKS-4801
-    this.extractActionAttributes = function(attributes, productAction) {
-        self.extractTransactionId(attributes, productAction);
+    _self.extractActionAttributes = function(
+        attributes: Record<string, string | number>,
+        productAction: ProductAction & SDKProductAction
+    ): void {
+        (self.extractTransactionId as Function)(attributes, productAction);
 
         if (productAction.Affiliation) {
             attributes['Affiliation'] = productAction.Affiliation;
@@ -218,7 +267,10 @@ export default function Ecommerce(mpInstance) {
     };
 
     // https://go.mparticle.com/work/SQDSDKS-4801
-    this.extractPromotionAttributes = function(attributes, promotion) {
+    _self.extractPromotionAttributes = function(
+        attributes: Record<string, string | number>,
+        promotion: Promotion & SDKPromotion
+    ): void {
         if (promotion.Id) {
             attributes['Id'] = promotion.Id;
         }
@@ -236,7 +288,10 @@ export default function Ecommerce(mpInstance) {
         }
     };
 
-    this.buildProductList = function(event, product) {
+    _self.buildProductList = function(
+        event: SDKEvent,
+        product: (Product & SDKProduct) | (Product & SDKProduct)[]
+    ): (Product & SDKProduct)[] {
         if (product) {
             if (Array.isArray(product)) {
                 return product;
@@ -245,21 +300,21 @@ export default function Ecommerce(mpInstance) {
             return [product];
         }
 
-        return event.ShoppingCart.ProductList;
+        return event.ShoppingCart.ProductList as (Product & SDKProduct)[];
     };
 
     this.createProduct = function(
-        name,
-        sku,
-        price,
-        quantity,
-        variant,
-        category,
-        brand,
-        position,
-        couponCode,
-        attributes
-    ) {
+        name: string,
+        sku: string | number,
+        price: string | number,
+        quantity?: string | number,
+        variant?: string,
+        category?: string,
+        brand?: string,
+        position?: number,
+        couponCode?: string,
+        attributes?: SDKEventAttrs
+    ): SDKProduct | null {
         attributes = mpInstance._Helpers.sanitizeAttributes(attributes, name);
 
         if (typeof name !== 'string') {
@@ -298,34 +353,42 @@ export default function Ecommerce(mpInstance) {
 
         return {
             Name: name,
-            Sku: sku,
-            Price: price,
-            Quantity: quantity,
+            Sku: sku as string,
+            Price: price as number,
+            Quantity: quantity as number,
             Brand: brand,
             Variant: variant,
             Category: category,
             Position: position,
             CouponCode: couponCode,
-            TotalAmount: quantity * price,
+            TotalAmount: (quantity as number) * (price as number),
             Attributes: attributes,
         };
     };
 
-    this.createPromotion = function(id, creative, name, position) {
+    _self.createPromotion = function(
+        id: string | number,
+        creative?: string,
+        name?: string,
+        position?: number
+    ) {
         if (!mpInstance._Helpers.Validators.isStringOrNumber(id)) {
             mpInstance.Logger.error(Messages.ErrorMessages.PromotionIdRequired);
             return null;
         }
 
         return {
-            Id: id,
+            Id: id as string,
             Creative: creative,
             Name: name,
             Position: position,
         };
     };
 
-    this.createImpression = function(name, product) {
+    _self.createImpression = function(
+        name: string,
+        product: Product
+    ): { Name: string; Product: Product } | null {
         if (typeof name !== 'string') {
             mpInstance.Logger.error(
                 'Name is required when creating an impression.'
@@ -347,13 +410,13 @@ export default function Ecommerce(mpInstance) {
     };
 
     this.createTransactionAttributes = function(
-        id,
-        affiliation,
-        couponCode,
-        revenue,
-        shipping,
-        tax
-    ) {
+        id: string | number,
+        affiliation?: string,
+        couponCode?: string,
+        revenue?: string | number,
+        shipping?: string | number,
+        tax?: number
+    ): TransactionAttributes | null {
         if (!mpInstance._Helpers.Validators.isStringOrNumber(id)) {
             mpInstance.Logger.error(
                 Messages.ErrorMessages.TransactionIdRequired
@@ -365,20 +428,26 @@ export default function Ecommerce(mpInstance) {
             Id: id,
             Affiliation: affiliation,
             CouponCode: couponCode,
-            Revenue: revenue,
-            Shipping: shipping,
+            Revenue: revenue as number,
+            Shipping: shipping as string,
             Tax: tax,
         };
     };
 
-    this.expandProductImpression = function(commerceEvent) {
-        var appEvents = [];
+    _self.expandProductImpression = function(
+        commerceEvent: CommerceEvent & SDKEvent
+    ): SDKEvent[] {
+        const appEvents: SDKEvent[] = [];
         if (!commerceEvent.ProductImpressions) {
             return appEvents;
         }
-        commerceEvent.ProductImpressions.forEach(function(productImpression) {
+        commerceEvent.ProductImpressions.forEach(function(
+            productImpression: SDKProductImpression
+        ) {
             if (productImpression.ProductList) {
-                productImpression.ProductList.forEach(function(product) {
+                productImpression.ProductList.forEach(function(
+                    product: SDKProduct
+                ) {
                     let attributes = extend(
                         false,
                         {},
@@ -390,14 +459,19 @@ export default function Ecommerce(mpInstance) {
                                 product.Attributes[attribute];
                         }
                     }
-                    self.extractProductAttributes(attributes, product);
+                    (self.extractProductAttributes as Function)(
+                        attributes,
+                        product
+                    );
                     if (productImpression.ProductImpressionList) {
                         attributes['Product Impression List'] =
                             productImpression.ProductImpressionList;
                     }
-                    var appEvent = mpInstance._ServerModel.createEventObject({
+                    const appEvent = mpInstance._ServerModel.createEventObject({
                         messageType: Types.MessageType.PageEvent,
-                        name: self.generateExpandedEcommerceName('Impression'),
+                        name: (self.generateExpandedEcommerceName as Function)(
+                            'Impression'
+                        ),
                         data: attributes,
                         eventType: Types.EventType.Transaction,
                     });
@@ -409,30 +483,36 @@ export default function Ecommerce(mpInstance) {
         return appEvents;
     };
 
-    this.expandCommerceEvent = function(event) {
+    _self.expandCommerceEvent = function(
+        event: CommerceEvent & SDKEvent
+    ): SDKEvent[] | null {
         if (!event) {
             return null;
         }
-        return self
-            .expandProductAction(event)
-            .concat(self.expandPromotionAction(event))
-            .concat(self.expandProductImpression(event));
+        return (self.expandProductAction as Function)(event)
+            .concat((self.expandPromotionAction as Function)(event))
+            .concat((self.expandProductImpression as Function)(event));
     };
 
-    this.expandPromotionAction = function(commerceEvent) {
-        var appEvents = [];
+    _self.expandPromotionAction = function(
+        commerceEvent: CommerceEvent & SDKEvent
+    ): SDKEvent[] {
+        const appEvents: SDKEvent[] = [];
         if (!commerceEvent.PromotionAction) {
             return appEvents;
         }
-        var promotions = commerceEvent.PromotionAction.PromotionList;
-        promotions.forEach(function(promotion) {
+        const promotions = commerceEvent.PromotionAction.PromotionList;
+        promotions.forEach(function(promotion: SDKPromotion) {
             let attributes = extend(false, {}, commerceEvent.EventAttributes);
-            self.extractPromotionAttributes(attributes, promotion);
+            (self.extractPromotionAttributes as Function)(
+                attributes,
+                promotion
+            );
 
-            var appEvent = mpInstance._ServerModel.createEventObject({
+            const appEvent = mpInstance._ServerModel.createEventObject({
                 messageType: Types.MessageType.PageEvent,
-                name: self.generateExpandedEcommerceName(
-                    Types.PromotionActionType.getExpansionName(
+                name: (self.generateExpandedEcommerceName as Function)(
+                    (Types.PromotionActionType.getExpansionName as Function)(
                         commerceEvent.PromotionAction.PromotionActionType
                     )
                 ),
@@ -444,12 +524,14 @@ export default function Ecommerce(mpInstance) {
         return appEvents;
     };
 
-    this.expandProductAction = function(commerceEvent) {
-        var appEvents = [];
+    _self.expandProductAction = function(
+        commerceEvent: CommerceEvent & SDKEvent
+    ): SDKEvent[] {
+        const appEvents: SDKEvent[] = [];
         if (!commerceEvent.ProductAction) {
             return appEvents;
         }
-        var shouldExtractActionAttributes = false;
+        let shouldExtractActionAttributes = false;
         if (
             commerceEvent.ProductAction.ProductActionType ===
                 Types.ProductActionType.Purchase ||
@@ -461,14 +543,14 @@ export default function Ecommerce(mpInstance) {
                 .ProductList
                 ? commerceEvent.ProductAction.ProductList.length
                 : 0;
-            self.extractActionAttributes(
+            (self.extractActionAttributes as Function)(
                 attributes,
                 commerceEvent.ProductAction
             );
             if (commerceEvent.CurrencyCode) {
                 attributes['Currency Code'] = commerceEvent.CurrencyCode;
             }
-            var plusOneEvent = mpInstance._ServerModel.createEventObject({
+            const plusOneEvent = mpInstance._ServerModel.createEventObject({
                 messageType: Types.MessageType.PageEvent,
                 name: self.generateExpandedEcommerceName(
                     Types.ProductActionType.getExpansionName(
@@ -484,34 +566,34 @@ export default function Ecommerce(mpInstance) {
             shouldExtractActionAttributes = true;
         }
 
-        var products = commerceEvent.ProductAction.ProductList;
+        const products = commerceEvent.ProductAction.ProductList;
 
         if (!products) {
             return appEvents;
         }
 
-        products.forEach(function(product) {
+        products.forEach(function(product: SDKProduct) {
             let attributes = extend(
                 false,
                 commerceEvent.EventAttributes,
                 product.Attributes
             );
             if (shouldExtractActionAttributes) {
-                self.extractActionAttributes(
+                (self.extractActionAttributes as Function)(
                     attributes,
                     commerceEvent.ProductAction
                 );
             } else {
-                self.extractTransactionId(
+                (self.extractTransactionId as Function)(
                     attributes,
                     commerceEvent.ProductAction
                 );
             }
-            self.extractProductAttributes(attributes, product);
+            (self.extractProductAttributes as Function)(attributes, product);
 
-            var productEvent = mpInstance._ServerModel.createEventObject({
+            const productEvent = mpInstance._ServerModel.createEventObject({
                 messageType: Types.MessageType.PageEvent,
-                name: self.generateExpandedEcommerceName(
+                name: (self.generateExpandedEcommerceName as Function)(
                     Types.ProductActionType.getExpansionName(
                         commerceEvent.ProductAction.ProductActionType
                     )
@@ -525,10 +607,13 @@ export default function Ecommerce(mpInstance) {
         return appEvents;
     };
 
-    this.createCommerceEventObject = function(customFlags, options) {
-        var baseEvent;
+    this.createCommerceEventObject = function(
+        customFlags: SDKEventCustomFlags,
+        options?: SDKEventOptions
+    ): SDKEvent | null {
+        let baseEvent: SDKEvent;
         // https://go.mparticle.com/work/SQDSDKS-4801
-        var { extend } = mpInstance._Helpers;
+        const { extend } = mpInstance._Helpers;
 
         mpInstance.Logger.verbose(
             Messages.InformationMessages.StartingLogCommerceEvent
@@ -537,12 +622,13 @@ export default function Ecommerce(mpInstance) {
         if (mpInstance._Helpers.canLog()) {
             baseEvent = mpInstance._ServerModel.createEventObject({
                 messageType: Types.MessageType.Commerce,
-                sourceMessageId: options?.sourceMessageId,
+                sourceMessageId: (options as { sourceMessageId?: string })
+                    ?.sourceMessageId,
             });
             baseEvent.EventName = 'eCommerce - ';
 
             baseEvent.CurrencyCode = mpInstance._Store.currencyCode;
-            baseEvent.ShoppingCart = [];
+            baseEvent.ShoppingCart = {} as SDKShoppingCart;
             baseEvent.CustomFlags = extend(baseEvent.CustomFlags, customFlags);
 
             return baseEvent;
@@ -556,9 +642,12 @@ export default function Ecommerce(mpInstance) {
     };
 
     // sanitizes any non number, non string value to 0
-    this.sanitizeAmount = function(amount, category) {
+    this.sanitizeAmount = function(
+        amount: string | number,
+        category: string
+    ): number {
         if (!mpInstance._Helpers.Validators.isStringOrNumber(amount)) {
-            var message = [
+            const message = [
                 category,
                 'must be of type number. A',
                 typeof amount,
diff --git a/test/src/tests-eCommerce.js b/test/src/tests-eCommerce.ts
similarity index 87%
rename from test/src/tests-eCommerce.js
rename to test/src/tests-eCommerce.ts
index 78d951b83..e6b20f32a 100644
--- a/test/src/tests-eCommerce.js
+++ b/test/src/tests-eCommerce.ts
@@ -2,12 +2,25 @@ import Utils from './config/utils';
 import sinon from 'sinon';
 import fetchMock from 'fetch-mock/esm/client';
 import { urls, apiKey, MPConfig, testMPID, ProductActionType, PromotionActionType } from './config/constants';
+
+declare function Should(value: unknown): Should.Assertion;
+declare namespace Should {
+    interface Assertion {
+        be: Assertion;
+        not: Assertion;
+        ok(): void;
+        true: boolean;
+    }
+}
+
 const { waitForCondition, fetchMockSuccess, hasIdentifyReturned } = Utils;
 
 const forwarderDefaultConfiguration = Utils.forwarderDefaultConfiguration,
     findEventFromRequest = Utils.findEventFromRequest,
     MockForwarder = Utils.MockForwarder;
 
+const mParticle = window.mParticle;
+
 describe('eCommerce', function() {
     beforeEach(function() {
         mParticle._resetForTests(MPConfig);
@@ -62,7 +75,7 @@ describe('eCommerce', function() {
 
     it('should log ecommerce event', async () => {
         await waitForCondition(hasIdentifyReturned);
-        const product = mParticle.eCommerce.createProduct(
+        const product = (mParticle.eCommerce.createProduct as Function)(
                 'iPhone',
                 '12345',
                 '400',
@@ -83,7 +96,7 @@ describe('eCommerce', function() {
                 200
             );
         
-        mParticle.eCommerce.logPurchase(transactionAttributes, product);
+        (mParticle.eCommerce.logPurchase as Function)(transactionAttributes, product);
         
         const purchaseEvent = findEventFromRequest(fetchMock.calls(), 'purchase');
 
@@ -113,22 +126,21 @@ describe('eCommerce', function() {
     });
 
     it('should not log an ecommerce event if there is a typo in the product action type', () => {
-        // fetchMock calls will have session start and AST events, we want to reset so that we can prove the product action type does not go through (length remains 0 after logging)
         fetchMock.resetHistory();
-        const product = mParticle.eCommerce.createProduct(
+        const product = (mParticle.eCommerce.createProduct as Function)(
                 'iPhone',
                 '12345',
                 '400');
 
-        mParticle.eCommerce.logProductAction(
-            mParticle.ProductActionType.Typo, // <------ will result in a null when converting the product action type as this is not a real value
+        (mParticle.eCommerce.logProductAction as Function)(
+            (ProductActionType as Record<string, number>).Typo,
             [product]
         );
         fetchMock.calls().length.should.equal(0);
     });
 
     it('should log badly formed ecommerce event', async () => {
-        const product = mParticle.eCommerce.createProduct(
+        const product = (mParticle.eCommerce.createProduct as Function)(
                 'iPhone',
                 '12345',
                 Infinity,
@@ -140,7 +152,7 @@ describe('eCommerce', function() {
                 'my-coupon-code',
                 { customkey: 'customvalue' }
             ),
-            transactionAttributes = mParticle.eCommerce.createTransactionAttributes(
+            transactionAttributes = (mParticle.eCommerce.createTransactionAttributes as Function)(
                 '12345',
                 'test-affiliation',
                 'coupon-code',
@@ -150,7 +162,7 @@ describe('eCommerce', function() {
             );
 
         await waitForCondition(hasIdentifyReturned);
-        mParticle.eCommerce.logPurchase(transactionAttributes, product);
+        (mParticle.eCommerce.logPurchase as Function)(transactionAttributes, product);
 
         const purchaseEvent = findEventFromRequest(fetchMock.calls(), 'purchase');
         
@@ -180,7 +192,7 @@ describe('eCommerce', function() {
     });
 
     it('should log identical events for logPurchase and logProductAction with product action type of `purchase`', async () => {
-        const product = mParticle.eCommerce.createProduct(
+        const product = (mParticle.eCommerce.createProduct as Function)(
                 'iPhone',
                 '12345',
                 '400',
@@ -202,12 +214,12 @@ describe('eCommerce', function() {
             );
 
         await waitForCondition(hasIdentifyReturned);
-        mParticle.eCommerce.logPurchase(transactionAttributes, product);
+        (mParticle.eCommerce.logPurchase as Function)(transactionAttributes, product);
         const purchaseEvent1 = findEventFromRequest(fetchMock.calls(), 'purchase');
         
         fetchMock.resetHistory();
         
-        mParticle.eCommerce.logProductAction(mParticle.ProductActionType.Purchase, product, null, null, transactionAttributes)
+        mParticle.eCommerce.logProductAction(ProductActionType.Purchase, product, null, null, transactionAttributes)
         const purchaseEvent2 = findEventFromRequest(fetchMock.calls(), 'purchase');
 
         const { product_action: productAction1 } = purchaseEvent1.data;
@@ -244,7 +256,7 @@ describe('eCommerce', function() {
             );
 
         await waitForCondition(hasIdentifyReturned);
-        mParticle.eCommerce.logPurchase(transactionAttributes, [
+        (mParticle.eCommerce.logPurchase as Function)(transactionAttributes, [
             product1,
             product2,
         ]);
@@ -265,7 +277,7 @@ describe('eCommerce', function() {
             );
 
         await waitForCondition(hasIdentifyReturned);
-        mParticle.eCommerce.logRefund(transactionAttributes, [
+        (mParticle.eCommerce.logRefund as Function)(transactionAttributes, [
             product1,
             product2,
         ]);
@@ -303,8 +315,8 @@ describe('eCommerce', function() {
         );
 
         await waitForCondition(hasIdentifyReturned);
-        mParticle.eCommerce.logPromotion(
-            mParticle.PromotionType.PromotionClick,
+        (mParticle.eCommerce.logPromotion as Function)(
+            PromotionActionType.PromotionClick,
             promotion
         );
 
@@ -336,8 +348,8 @@ describe('eCommerce', function() {
         );
 
         await waitForCondition(hasIdentifyReturned);
-        mParticle.eCommerce.logPromotion(
-            mParticle.PromotionType.PromotionClick,
+        (mParticle.eCommerce.logPromotion as Function)(
+            PromotionActionType.PromotionClick,
             [promotion1, promotion2]
         );
 
@@ -367,8 +379,8 @@ describe('eCommerce', function() {
         );
 
         await waitForCondition(hasIdentifyReturned);
-        mParticle.eCommerce.logPromotion(
-            mParticle.PromotionType.PromotionClick,
+        (mParticle.eCommerce.logPromotion as Function)(
+            PromotionActionType.PromotionClick,
             promotion,
             {}, {},
             { shouldUploadEvent: false }
@@ -380,7 +392,7 @@ describe('eCommerce', function() {
 
     it('should create impression', () => {
         const product = mParticle.eCommerce.createProduct('iPhone', '12345', 400),
-            impression = mParticle.eCommerce.createImpression(
+            impression = (mParticle.eCommerce.createImpression as Function)(
                 'impression-name',
                 product
             );
@@ -392,13 +404,13 @@ describe('eCommerce', function() {
 
     it('should log impression event', async () => {
         const product = mParticle.eCommerce.createProduct('iPhone', '12345', 400),
-            impression = mParticle.eCommerce.createImpression(
+            impression = (mParticle.eCommerce.createImpression as Function)(
                 'impression-name',
                 product
             );
 
         await waitForCondition(hasIdentifyReturned);
-        mParticle.eCommerce.logImpression(impression);
+        (mParticle.eCommerce.logImpression as Function)(impression);
         const impressionEvent = findEventFromRequest(fetchMock.calls(), 'impression');
 
         Should(impressionEvent).be.ok();
@@ -412,12 +424,12 @@ describe('eCommerce', function() {
     it('should allow an impression to bypass server upload', async () => {
         await waitForCondition(hasIdentifyReturned);
         const product = mParticle.eCommerce.createProduct('iPhone', '12345', 400),
-            impression = mParticle.eCommerce.createImpression(
+            impression = (mParticle.eCommerce.createImpression as Function)(
                 'impression-name',
                 product
             );
 
-        mParticle.eCommerce.logImpression(impression, null, null, { shouldUploadEvent: false });
+        (mParticle.eCommerce.logImpression as Function)(impression, null, null, { shouldUploadEvent: false });
 
         const impressionEvent = findEventFromRequest(fetchMock.calls(), 'impression');
 
@@ -427,7 +439,7 @@ describe('eCommerce', function() {
     it('should log multiple impression when an array of impressions is passed', async () => {
         await waitForCondition(hasIdentifyReturned);
         const product = mParticle.eCommerce.createProduct('iPhone', '12345', 400),
-            impression = mParticle.eCommerce.createImpression(
+            impression = (mParticle.eCommerce.createImpression as Function)(
                 'impression-name1',
                 product
             ),
@@ -436,12 +448,12 @@ describe('eCommerce', function() {
                 '23456',
                 200
             ),
-            impression2 = mParticle.eCommerce.createImpression(
+            impression2 = (mParticle.eCommerce.createImpression as Function)(
                 'impression-name2',
                 product2
             );
 
-        mParticle.eCommerce.logImpression([impression, impression2]);
+        (mParticle.eCommerce.logImpression as Function)([impression, impression2]);
 
         const impressionEvent = findEventFromRequest(fetchMock.calls(), 'impression');
 
@@ -478,7 +490,7 @@ describe('eCommerce', function() {
             200
         );
 
-        mParticle.eCommerce.logRefund(transactionAttributes, product);
+        (mParticle.eCommerce.logRefund as Function)(transactionAttributes, product);
 
 
         const refundEvent = findEventFromRequest(fetchMock.calls(), 'refund');
@@ -507,7 +519,7 @@ describe('eCommerce', function() {
 
     it('should log identical events for logRefund and logProductAction with a product action of `refund`', async () => {
         await waitForCondition(hasIdentifyReturned);
-        const product = mParticle.eCommerce.createProduct(
+        const product = (mParticle.eCommerce.createProduct as Function)(
             'iPhone',
             '12345',
             '400',
@@ -528,13 +540,13 @@ describe('eCommerce', function() {
             200
         );
 
-        mParticle.eCommerce.logRefund(transactionAttributes, product);
+        (mParticle.eCommerce.logRefund as Function)(transactionAttributes, product);
         
         const refundEvent1 = findEventFromRequest(fetchMock.calls(), 'refund');
 
         fetchMock.resetHistory();
         
-        mParticle.eCommerce.logProductAction(mParticle.ProductActionType.Refund, product, null, null, transactionAttributes)
+        mParticle.eCommerce.logProductAction(ProductActionType.Refund, product, null, null, transactionAttributes)
 
         const refundEvent2 = findEventFromRequest(fetchMock.calls(), 'refund');
 
@@ -561,7 +573,7 @@ describe('eCommerce', function() {
 
     it('should allow a product action to bypass server upload', async () => {
         await waitForCondition(hasIdentifyReturned);
-        const product = mParticle.eCommerce.createProduct(
+        const product = (mParticle.eCommerce.createProduct as Function)(
             'iPhone',
             '12345',
             '400',
@@ -583,7 +595,7 @@ describe('eCommerce', function() {
         );
 
         mParticle.eCommerce.logProductAction(
-            mParticle.ProductActionType.Purchase,
+            ProductActionType.Purchase,
             product,
             null,
             null,
@@ -600,7 +612,7 @@ describe('eCommerce', function() {
         await waitForCondition(hasIdentifyReturned);
         const bond = sinon.spy(mParticle.getInstance().Logger, 'warning');
 
-        mParticle.eCommerce.logCheckout(1, 'Visa');
+        (mParticle.eCommerce.logCheckout as Function)(1, 'Visa');
 
         const checkoutEvent = findEventFromRequest(fetchMock.calls(), 'checkout');
 
@@ -624,7 +636,7 @@ describe('eCommerce', function() {
         const product1 = mParticle.eCommerce.createProduct('iphone', 'iphoneSKU', 999);
         const product2 = mParticle.eCommerce.createProduct('galaxy', 'galaxySKU', 799);
 
-        mParticle.eCommerce.logProductAction(mParticle.ProductActionType.Checkout, [product1, product2], null, null, {Step: 4, Option: 'Visa'});
+        (mParticle.eCommerce.logProductAction as Function)(ProductActionType.Checkout, [product1, product2], null, null, {Step: 4, Option: 'Visa'});
 
         const checkoutEvent = findEventFromRequest(fetchMock.calls(), 'checkout');
 
@@ -644,7 +656,7 @@ describe('eCommerce', function() {
         await waitForCondition(hasIdentifyReturned);
         const product = mParticle.eCommerce.createProduct('iPhone', '12345', 400);
 
-        mParticle.eCommerce.logProductAction(
+        (mParticle.eCommerce.logProductAction as Function)(
             ProductActionType.CheckoutOption,
             product,
             { color: 'blue' }
@@ -669,7 +681,7 @@ describe('eCommerce', function() {
         await waitForCondition(hasIdentifyReturned);
         const product = mParticle.eCommerce.createProduct('iPhone', '12345', 400);
 
-        mParticle.eCommerce.logProductAction(
+        (mParticle.eCommerce.logProductAction as Function)(
             ProductActionType.ViewDetail,
             product
         );
@@ -685,11 +697,11 @@ describe('eCommerce', function() {
     });
 
     it('should fail to create product if name not a string', () => {
-        const product = mParticle.eCommerce.createProduct(null);
-        const product2 = mParticle.eCommerce.createProduct(undefined);
-        const product3 = mParticle.eCommerce.createProduct(['product']);
-        const product4 = mParticle.eCommerce.createProduct(123);
-        const product5 = mParticle.eCommerce.createProduct({ key: 'value' });
+        const product = (mParticle.eCommerce.createProduct as Function)(null);
+        const product2 = (mParticle.eCommerce.createProduct as Function)(undefined);
+        const product3 = (mParticle.eCommerce.createProduct as Function)(['product']);
+        const product4 = (mParticle.eCommerce.createProduct as Function)(123);
+        const product5 = (mParticle.eCommerce.createProduct as Function)({ key: 'value' });
 
         Should(product).not.be.ok();
         Should(product2).not.be.ok();
@@ -699,12 +711,12 @@ describe('eCommerce', function() {
     });
 
     it('should fail to create product if sku not a string or a number', () => {
-        const product = mParticle.eCommerce.createProduct('test', null);
-        const product2 = mParticle.eCommerce.createProduct('test', {
+        const product = (mParticle.eCommerce.createProduct as Function)('test', null);
+        const product2 = (mParticle.eCommerce.createProduct as Function)('test', {
             key: 'value',
         });
-        const product3 = mParticle.eCommerce.createProduct('test', []);
-        const product4 = mParticle.eCommerce.createProduct('test', undefined);
+        const product3 = (mParticle.eCommerce.createProduct as Function)('test', []);
+        const product4 = (mParticle.eCommerce.createProduct as Function)('test', undefined);
 
         Should(product).not.be.ok();
         Should(product2).not.be.ok();
@@ -713,10 +725,10 @@ describe('eCommerce', function() {
     });
 
     it('should fail to create product if price not a string or number', () => {
-        const product = mParticle.eCommerce.createProduct('test', 'sku', null);
-        const product2 = mParticle.eCommerce.createProduct('test', 'sku', null);
-        const product3 = mParticle.eCommerce.createProduct('test', 'sku', null);
-        const product4 = mParticle.eCommerce.createProduct('test', 'sku', null);
+        const product = (mParticle.eCommerce.createProduct as Function)('test', 'sku', null);
+        const product2 = (mParticle.eCommerce.createProduct as Function)('test', 'sku', null);
+        const product3 = (mParticle.eCommerce.createProduct as Function)('test', 'sku', null);
+        const product4 = (mParticle.eCommerce.createProduct as Function)('test', 'sku', null);
 
         Should(product).not.be.ok();
         Should(product2).not.be.ok();
@@ -725,13 +737,13 @@ describe('eCommerce', function() {
     });
 
     it('should fail to create impression if name is not specified', () => {
-        const impression = mParticle.eCommerce.createImpression(null);
+        const impression = (mParticle.eCommerce.createImpression as Function)(null);
 
         Should(impression).not.be.ok();
     });
 
     it('should fail to create impression if product is not specified', () => {
-        const impression = mParticle.eCommerce.createImpression('name', null);
+        const impression = (mParticle.eCommerce.createImpression as Function)('name', null);
 
         Should(impression).not.be.ok();
     });
@@ -756,7 +768,7 @@ describe('eCommerce', function() {
                 200
             );
 
-        mParticle.eCommerce.logPurchase(transactionAttributes, product);
+        (mParticle.eCommerce.logPurchase as Function)(transactionAttributes, product);
         const purchaseEvent = findEventFromRequest(fetchMock.calls(), 'purchase');
 
         purchaseEvent.data.product_action.products[0].should.not.have.property('position');
@@ -777,10 +789,10 @@ describe('eCommerce', function() {
             );
         });
         mParticle.eCommerce.setCurrencyCode('foo-currency');
-        const productAttributes = {};
+        const productAttributes: Record<string, string> = {};
         productAttributes['foo-attribute-key'] = 'foo-product-attribute-value';
 
-        const eventAttributes = {};
+        const eventAttributes: Record<string, string> = {};
         eventAttributes['foo-event-attribute-key'] =
             'foo-event-attribute-value';
 
@@ -805,7 +817,7 @@ describe('eCommerce', function() {
             10,
             8
         );
-        mParticle.eCommerce.logPurchase(
+        (mParticle.eCommerce.logPurchase as Function)(
             transactionAttributes,
             product,
             false,
@@ -814,7 +826,7 @@ describe('eCommerce', function() {
         window.MockForwarder1.instance.receivedEvent.should.have.property(
             'ProductAction'
         );
-        const expandedEvents = mParticle.eCommerce.expandCommerceEvent(
+        const expandedEvents = (mParticle.eCommerce.expandCommerceEvent as Function)(
             window.MockForwarder1.instance.receivedEvent
         );
         expandedEvents.should.be.instanceof(Array).and.have.lengthOf(2);
@@ -826,7 +838,7 @@ describe('eCommerce', function() {
         );
         plusOneEvent.should.have.property(
             'EventCategory',
-            mParticle.EventType.Transaction
+            (mParticle.EventType as Record<string, number>).Transaction
         );
         let attributes = plusOneEvent.EventAttributes;
         attributes.should.have.property('Transaction Id', 'foo-transaction-id');
@@ -849,7 +861,7 @@ describe('eCommerce', function() {
         );
         productEvent.should.have.property(
             'EventCategory',
-            mParticle.EventType.Transaction
+            (mParticle.EventType as Record<string, number>).Transaction
         );
         attributes = productEvent.EventAttributes;
         attributes.should.not.have.property('Affiliation');
@@ -885,10 +897,10 @@ describe('eCommerce', function() {
                 mParticle.getInstance()._Store.identityCallInFlight === false
             );
         });
-        const productAttributes = {};
+        const productAttributes: Record<string, string> = {};
         productAttributes['foo-attribute-key'] = 'foo-product-attribute-value';
 
-        const eventAttributes = {};
+        const eventAttributes: Record<string, string> = {};
         eventAttributes['foo-event-attribute-key'] =
             'foo-event-attribute-value';
 
@@ -913,7 +925,7 @@ describe('eCommerce', function() {
             10,
             8
         );
-        mParticle.eCommerce.logRefund(
+        (mParticle.eCommerce.logRefund as Function)(
             transactionAttributes,
             product,
             false,
@@ -922,7 +934,7 @@ describe('eCommerce', function() {
         window.MockForwarder1.instance.receivedEvent.should.have.property(
             'ProductAction'
         );
-        const expandedEvents = mParticle.eCommerce.expandCommerceEvent(
+        const expandedEvents = (mParticle.eCommerce.expandCommerceEvent as Function)(
             window.MockForwarder1.instance.receivedEvent
         );
         expandedEvents.should.be.instanceof(Array).and.have.lengthOf(2);
@@ -955,10 +967,10 @@ describe('eCommerce', function() {
                 mParticle.getInstance()._Store.identityCallInFlight === false
             );
         });
-        const productAttributes = {};
+        const productAttributes: Record<string, string> = {};
         productAttributes['foo-attribute-key'] = 'foo-product-attribute-value';
 
-        const eventAttributes = {};
+        const eventAttributes: Record<string, string> = {};
         eventAttributes['foo-event-attribute-key'] =
             'foo-event-attribute-value';
 
@@ -975,15 +987,15 @@ describe('eCommerce', function() {
             productAttributes
         );
 
-        mParticle.eCommerce.logProductAction(
-            mParticle.ProductActionType.RemoveFromWishlist,
+        (mParticle.eCommerce.logProductAction as Function)(
+            ProductActionType.RemoveFromWishlist,
             product,
             eventAttributes
         );
         window.MockForwarder1.instance.receivedEvent.should.have.property(
             'ProductAction'
         );
-        const expandedEvents = mParticle.eCommerce.expandCommerceEvent(
+        const expandedEvents = (mParticle.eCommerce.expandCommerceEvent as Function)(
             window.MockForwarder1.instance.receivedEvent
         );
         expandedEvents.should.be.instanceof(Array).and.have.lengthOf(1);
@@ -995,7 +1007,7 @@ describe('eCommerce', function() {
         );
         productEvent.should.have.property(
             'EventCategory',
-            mParticle.EventType.Transaction
+            (mParticle.EventType as Record<string, number>).Transaction
         );
         const attributes = productEvent.EventAttributes;
 
@@ -1027,13 +1039,13 @@ describe('eCommerce', function() {
             );
         });
 
-        const eventAttributes = {};
+        const eventAttributes: Record<string, string> = {};
         eventAttributes['foo-event-attribute-key'] =
             'foo-event-attribute-value';
         eventAttributes['Checkout Step'] = 'foo-step';
         eventAttributes['Checkout Options'] = 'foo-options';
 
-        const productAttributes = {};
+        const productAttributes: Record<string, string> = {};
         productAttributes['foo-attribute-key'] = 'foo-product-attribute-value';
 
         const product = mParticle.eCommerce.createProduct(
@@ -1051,13 +1063,13 @@ describe('eCommerce', function() {
 
         mParticle.eCommerce.Cart.add(product, true);
 
-        mParticle.eCommerce.logProductAction(mParticle.ProductActionType.Checkout, [product], eventAttributes);
+        (mParticle.eCommerce.logProductAction as Function)(ProductActionType.Checkout, [product], eventAttributes);
 
         window.MockForwarder1.instance.receivedEvent.should.have.property(
             'ProductAction'
         );
 
-        const expandedEvents = mParticle.eCommerce.expandCommerceEvent(
+        const expandedEvents = (mParticle.eCommerce.expandCommerceEvent as Function)(
             window.MockForwarder1.instance.receivedEvent
         );
         expandedEvents.should.be.instanceof(Array).and.have.lengthOf(1);
@@ -1069,7 +1081,7 @@ describe('eCommerce', function() {
         );
         productEvent.should.have.property(
             'EventCategory',
-            mParticle.EventType.Transaction
+            (mParticle.EventType as Record<string, number>).Transaction
         );
         const attributes = productEvent.EventAttributes;
 
@@ -1103,7 +1115,7 @@ describe('eCommerce', function() {
             );
         });
 
-        const eventAttributes = {};
+        const eventAttributes: Record<string, string> = {};
         eventAttributes['foo-event-attribute-key'] =
             'foo-event-attribute-value';
 
@@ -1114,15 +1126,15 @@ describe('eCommerce', function() {
             5
         );
 
-        mParticle.eCommerce.logPromotion(
-            mParticle.PromotionType.PromotionClick,
+        (mParticle.eCommerce.logPromotion as Function)(
+            PromotionActionType.PromotionClick,
             promotion,
             eventAttributes
         );
         window.MockForwarder1.instance.receivedEvent.should.have.property(
             'PromotionAction'
         );
-        const expandedEvents = mParticle.eCommerce.expandCommerceEvent(
+        const expandedEvents = (mParticle.eCommerce.expandCommerceEvent as Function)(
             window.MockForwarder1.instance.receivedEvent
         );
 
@@ -1135,7 +1147,7 @@ describe('eCommerce', function() {
         );
         promotionEvent.should.have.property(
             'EventCategory',
-            mParticle.EventType.Transaction
+            (mParticle.EventType as Record<string, number>).Transaction
         );
         const attributes = promotionEvent.EventAttributes;
 
@@ -1150,7 +1162,7 @@ describe('eCommerce', function() {
     });
 
     it('expand null commerce event', () => {
-        const expandedEvents = mParticle.eCommerce.expandCommerceEvent(null);
+        const expandedEvents = (mParticle.eCommerce.expandCommerceEvent as Function)(null);
         (expandedEvents == null).should.be.true;
     });
 
@@ -1168,10 +1180,10 @@ describe('eCommerce', function() {
             );
         });
 
-        const productAttributes = {};
+        const productAttributes: Record<string, string> = {};
         productAttributes['foo-attribute-key'] = 'foo-product-attribute-value';
 
-        const eventAttributes = {};
+        const eventAttributes: Record<string, string> = {};
         eventAttributes['foo-event-attribute-key'] =
             'foo-event-attribute-value';
 
@@ -1188,16 +1200,16 @@ describe('eCommerce', function() {
             productAttributes
         );
 
-        const impression = mParticle.eCommerce.createImpression(
+        const impression = (mParticle.eCommerce.createImpression as Function)(
             'suggested products list',
             product
         );
 
-        mParticle.eCommerce.logImpression(impression, eventAttributes);
+        (mParticle.eCommerce.logImpression as Function)(impression, eventAttributes);
         window.MockForwarder1.instance.receivedEvent.should.have.property(
             'ProductImpressions'
         );
-        const expandedEvents = mParticle.eCommerce.expandCommerceEvent(
+        const expandedEvents = (mParticle.eCommerce.expandCommerceEvent as Function)(
             window.MockForwarder1.instance.receivedEvent
         );
 
@@ -1210,7 +1222,7 @@ describe('eCommerce', function() {
         );
         impressionEvent.should.have.property(
             'EventCategory',
-            mParticle.EventType.Transaction
+            (mParticle.EventType as Record<string, number>).Transaction
         );
         const attributes = impressionEvent.EventAttributes;
 
@@ -1238,7 +1250,7 @@ describe('eCommerce', function() {
 
     it('should add customFlags to logCheckout events', async () => {
         await waitForCondition(hasIdentifyReturned);
-        mParticle.eCommerce.logCheckout(1, {}, {}, { interactionEvent: true });
+        (mParticle.eCommerce.logCheckout as Function)(1, {}, {}, { interactionEvent: true });
 
         const checkoutEvent = findEventFromRequest(fetchMock.calls(), 'checkout');
         checkoutEvent.data.custom_flags.interactionEvent.should.equal(true);
@@ -1247,8 +1259,8 @@ describe('eCommerce', function() {
     it('should add customFlags to logProductAction events', async () => {
         await waitForCondition(hasIdentifyReturned);
         const product = mParticle.eCommerce.createProduct('iPhone', 'sku1', 499);
-        mParticle.eCommerce.logProductAction(
-            mParticle.ProductActionType.Unknown,
+        (mParticle.eCommerce.logProductAction as Function)(
+            ProductActionType.Unknown,
             product,
             { price: 5 },
             { interactionEvent: true }
@@ -1287,8 +1299,8 @@ describe('eCommerce', function() {
             'name'
         );
 
-        mParticle.eCommerce.logPromotion(
-            mParticle.PromotionType.Unknown,
+        (mParticle.eCommerce.logPromotion as Function)(
+            PromotionActionType.Unknown,
             promotion,
             { shipping: 5 },
             { interactionEvent: true }
@@ -1303,11 +1315,11 @@ describe('eCommerce', function() {
     it('should add customFlags to logImpression events', async () => {
         await waitForCondition(hasIdentifyReturned);
         const product = mParticle.eCommerce.createProduct('iPhone', 'sku1', 499);
-        const impression = mParticle.eCommerce.createImpression(
+        const impression = (mParticle.eCommerce.createImpression as Function)(
             'iphoneImpressionName',
             product
         );
-        mParticle.eCommerce.logImpression(
+        (mParticle.eCommerce.logImpression as Function)(
             impression,
             { shipping: 5 },
             { interactionEvent: true }
@@ -1392,8 +1404,8 @@ describe('eCommerce', function() {
 
         it('should be empty when transactionAttributes is empty', () => {
             const mparticle = mParticle.getInstance()
-            const productAction = {}
-            mparticle._Ecommerce.convertTransactionAttributesToProductAction({}, productAction)
+            const productAction: Record<string, string | number> = {}
+            ;(mparticle._Ecommerce.convertTransactionAttributesToProductAction as Function)({}, productAction)
             Object.keys(productAction).length.should.equal(0);
         });
 
@@ -1417,8 +1429,8 @@ describe('eCommerce', function() {
                 Tax: "tax"
             };
 
-            const productAction = {};
-            mparticle._Ecommerce.convertTransactionAttributesToProductAction(transactionAttributes, productAction)
+            const productAction: Record<string, string | number> = {};
+            ;(mparticle._Ecommerce.convertTransactionAttributesToProductAction as Function)(transactionAttributes, productAction)
             productAction.TransactionId.should.equal("id")
             productAction.Affiliation.should.equal("affiliation")
             productAction.CouponCode.should.equal("couponCode")
@@ -1431,7 +1443,7 @@ describe('eCommerce', function() {
 
         it('should allow a user to pass in a source_message_id to a commerce event', async () => {
             await waitForCondition(hasIdentifyReturned);
-             const product = mParticle.eCommerce.createProduct(
+             const product = (mParticle.eCommerce.createProduct as Function)(
                 'iPhone',
                 '12345',
                 '400',
@@ -1453,8 +1465,8 @@ describe('eCommerce', function() {
                 200
             );
             
-            mParticle.eCommerce.logProductAction(
-                mParticle.ProductActionType.Purchase,
+            (mParticle.eCommerce.logProductAction as Function)(
+                ProductActionType.Purchase,
                 product,
                 null,
                 null,
@@ -1468,4 +1480,4 @@ describe('eCommerce', function() {
             purchaseEvent1.data.source_message_id.should.equal('foo-bar');
         });
     });
-});
\ No newline at end of file
+});