diff --git a/packages/medusa/src/services/cart.js b/packages/medusa/src/services/cart.js
index 75d98c0440..e0755d0b2c 100644
--- a/packages/medusa/src/services/cart.js
+++ b/packages/medusa/src/services/cart.js
@@ -160,7 +160,7 @@ class CartService extends BaseService {
       "total",
     ]
 
-    const totalsToSelect = select.filter((v) => totalFields.includes(v))
+    const totalsToSelect = select.filter(v => totalFields.includes(v))
     if (totalsToSelect.length > 0) {
       const relationSet = new Set(relations)
       relationSet.add("items")
@@ -173,7 +173,7 @@ class CartService extends BaseService {
       relationSet.add("region")
       relations = [...relationSet]
 
-      select = select.filter((v) => !totalFields.includes(v))
+      select = select.filter(v => !totalFields.includes(v))
     }
 
     return {
@@ -273,7 +273,7 @@ class CartService extends BaseService {
    * @return {Promise} the result of the create operation
    */
   async create(data) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cartRepo = manager.getCustomRepository(this.cartRepository_)
       const addressRepo = manager.getCustomRepository(this.addressRepository_)
       const { region_id } = data
@@ -342,7 +342,7 @@ class CartService extends BaseService {
    * @retur {Promise} the result of the update operation
    */
   async removeLineItem(cartId, lineItemId) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cart = await this.retrieve(cartId, {
         relations: [
           "items",
@@ -352,7 +352,7 @@ class CartService extends BaseService {
         ],
       })
 
-      const lineItem = cart.items.find((li) => li.id === lineItemId)
+      const lineItem = cart.items.find(li => li.id === lineItemId)
       if (!lineItem) {
         return cart
       }
@@ -421,7 +421,7 @@ class CartService extends BaseService {
    * @return {Promise} the result of the update operation
    */
   async addLineItem(cartId, lineItem) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cart = await this.retrieve(cartId, {
         relations: [
           "shipping_methods",
@@ -434,7 +434,7 @@ class CartService extends BaseService {
 
       let currentItem
       if (lineItem.should_merge) {
-        currentItem = cart.items.find((line) => {
+        currentItem = cart.items.find(line => {
           if (line.should_merge && line.variant_id === lineItem.variant_id) {
             return _.isEqual(line.metadata, lineItem.metadata)
           }
@@ -500,13 +500,13 @@ class CartService extends BaseService {
    * @return {Promise} the result of the update operation
    */
   async updateLineItem(cartId, lineItemId, lineItemUpdate) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cart = await this.retrieve(cartId, {
         relations: ["items", "payment_sessions"],
       })
 
       // Ensure that the line item exists in the cart
-      const lineItemExists = cart.items.find((i) => i.id === lineItemId)
+      const lineItemExists = cart.items.find(i => i.id === lineItemId)
       if (!lineItemExists) {
         throw new MedusaError(
           MedusaError.Types.INVALID_DATA,
@@ -553,7 +553,7 @@ class CartService extends BaseService {
       // if any free shipping discounts, we ensure to update shipping method amount
       if (shouldAdd) {
         await Promise.all(
-          cart.shipping_methods.map(async (sm) => {
+          cart.shipping_methods.map(async sm => {
             const smRepo = this.manager_.getCustomRepository(
               this.shippingMethodRepository_
             )
@@ -568,7 +568,7 @@ class CartService extends BaseService {
         )
       } else {
         await Promise.all(
-          cart.shipping_methods.map(async (sm) => {
+          cart.shipping_methods.map(async sm => {
             const smRepo = this.manager_.getCustomRepository(
               this.shippingMethodRepository_
             )
@@ -584,7 +584,7 @@ class CartService extends BaseService {
   }
 
   async update(cartId, update) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cartRepo = manager.getCustomRepository(this.cartRepository_)
       const cart = await this.retrieve(cartId, {
         select: [
@@ -938,7 +938,7 @@ class CartService extends BaseService {
     const toParse = [...cart.discounts, discount]
 
     let sawNotShipping = false
-    const newDiscounts = toParse.map((d) => {
+    const newDiscounts = toParse.map(d => {
       const drule = d.rule
       switch (drule.type) {
         case "free_shipping":
@@ -968,7 +968,7 @@ class CartService extends BaseService {
    * @return {Promise<Cart>} the resulting cart
    */
   async removeDiscount(cartId, discountCode) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cart = await this.retrieve(cartId, {
         relations: ["discounts", "payment_sessions", "shipping_methods"],
       })
@@ -977,7 +977,7 @@ class CartService extends BaseService {
         await this.adjustFreeShipping_(cart, false)
       }
 
-      cart.discounts = cart.discounts.filter((d) => d.code !== discountCode)
+      cart.discounts = cart.discounts.filter(d => d.code !== discountCode)
 
       const cartRepo = manager.getCustomRepository(this.cartRepository_)
 
@@ -1008,7 +1008,7 @@ class CartService extends BaseService {
    * Updates the currently selected payment session.
    */
   async updatePaymentSession(cartId, update) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cart = await this.retrieve(cartId, {
         relations: ["payment_sessions"],
       })
@@ -1042,7 +1042,7 @@ class CartService extends BaseService {
    * @return {Promise<Cart>} the resulting cart
    */
   async authorizePayment(cartId, context = {}) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cartRepository = manager.getCustomRepository(this.cartRepository_)
 
       const cart = await this.retrieve(cartId, {
@@ -1089,7 +1089,7 @@ class CartService extends BaseService {
    * @returns {Promise} result of update operation
    */
   async setPaymentSession(cartId, providerId) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const psRepo = manager.getCustomRepository(this.paymentSessionRepository_)
 
       const cart = await this.retrieve(cartId, {
@@ -1118,13 +1118,13 @@ class CartService extends BaseService {
       }
 
       await Promise.all(
-        cart.payment_sessions.map((ps) => {
+        cart.payment_sessions.map(ps => {
           return psRepo.save({ ...ps, is_selected: null })
         })
       )
 
       const sess = cart.payment_sessions.find(
-        (ps) => ps.provider_id === providerId
+        ps => ps.provider_id === providerId
       )
 
       sess.is_selected = true
@@ -1150,7 +1150,7 @@ class CartService extends BaseService {
    * @returns {Promise} the result of the update operation.
    */
   async setPaymentSessions(cartOrCartId) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const psRepo = manager.getCustomRepository(this.paymentSessionRepository_)
 
       let cartId =
@@ -1233,7 +1233,7 @@ class CartService extends BaseService {
    * @returns {Promise<Cart>} the resulting cart.
    */
   async deletePaymentSession(cartId, providerId) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cart = await this.retrieve(cartId, {
         relations: ["payment_sessions"],
       })
@@ -1274,7 +1274,7 @@ class CartService extends BaseService {
    * @returns {Promise<Cart>} the resulting cart.
    */
   async refreshPaymentSession(cartId, providerId) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cart = await this.retrieve(cartId, {
         relations: ["payment_sessions"],
       })
@@ -1313,7 +1313,7 @@ class CartService extends BaseService {
    * @return {Promise} the result of the update operation
    */
   async addShippingMethod(cartId, optionId, data) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cart = await this.retrieve(cartId, {
         select: ["subtotal"],
         relations: [
@@ -1397,7 +1397,7 @@ class CartService extends BaseService {
     if (cart.items.length) {
       cart.items = await Promise.all(
         cart.items
-          .map(async (item) => {
+          .map(async item => {
             const availablePrice = await this.productVariantService_
               .getRegionPrice(item.variant_id, regionId)
               .catch(() => undefined)
@@ -1476,20 +1476,20 @@ class CartService extends BaseService {
     }
 
     if (cart.discounts && cart.discounts.length) {
-      const newDiscounts = cart.discounts.map((d) => {
+      const newDiscounts = cart.discounts.map(d => {
         if (d.regions.find(({ id }) => id === regionId)) {
           return d
         }
       })
 
-      cart.discounts = newDiscounts.filter((d) => !!d)
+      cart.discounts = newDiscounts.filter(d => !!d)
     }
 
     cart.gift_cards = []
 
     if (cart.payment_sessions && cart.payment_sessions.length) {
       await Promise.all(
-        cart.payment_sessions.map((ps) =>
+        cart.payment_sessions.map(ps =>
           this.paymentProviderService_
             .withTransaction(this.manager_)
             .deleteSession(ps)
@@ -1507,7 +1507,7 @@ class CartService extends BaseService {
    *    not found.
    */
   async delete(cartId) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cart = await this.retrieve(cartId, {
         relations: ["items", "discounts", "payment_sessions"],
       })
@@ -1541,7 +1541,7 @@ class CartService extends BaseService {
    * @return {Promise} resolves to the updated result.
    */
   async setMetadata(cartId, key, value) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cartRepo = manager.getCustomRepository(this.cartRepository_)
 
       const validatedId = this.validateId_(cartId)
@@ -1575,7 +1575,7 @@ class CartService extends BaseService {
    * @return {Promise} resolves to the updated result.
    */
   async deleteMetadata(cartId, key) {
-    return this.atomicPhase_(async (manager) => {
+    return this.atomicPhase_(async manager => {
       const cartRepo = manager.getCustomRepository(this.cartRepository_)
       const validatedId = this.validateId_(cartId)