diff --git a/.eslintignore b/.eslintignore
index 197796e10e..ea0a7867b0 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -15,8 +15,6 @@
 /packages/medusa/src/services/shipping-profile.js
 /packages/medusa/src/services/store.js
 /packages/medusa/src/services/swap.js
-/packages/medusa/src/services/totals.js
-
 /packages/medusa/src/subscribers/notification.js
 /packages/medusa/src/subscribers/order.js
 /packages/medusa/src/subscribers/product.js
diff --git a/packages/medusa/src/services/totals.js b/packages/medusa/src/services/totals.js
index 49ffc3d4c1..1a075fc17e 100644
--- a/packages/medusa/src/services/totals.js
+++ b/packages/medusa/src/services/totals.js
@@ -5,7 +5,7 @@ import carts from "../api/routes/store/carts"
 
 /**
  * A service that calculates total and subtotals for orders, carts etc..
- * @implements BaseService
+ * @implements {BaseService}
  */
 class TotalsService extends BaseService {
   constructor() {
@@ -49,7 +49,8 @@ class TotalsService extends BaseService {
 
   /**
    * Calculates subtotal of a given cart or order.
-   * @param {Cart || Order} object - cart or order to calculate subtotal for
+   * @param {(Cart|Order)} object - cart or order to calculate subtotal for
+   * @param {Object} opts - options
    * @return {int} the calculated subtotal
    */
   getSubtotal(object, opts = {}) {
@@ -58,7 +59,7 @@ class TotalsService extends BaseService {
       return subtotal
     }
 
-    object.items.map(item => {
+    object.items.map((item) => {
       if (opts.excludeNonDiscounts) {
         if (item.allow_discounts) {
           subtotal += item.unit_price * item.quantity
@@ -129,7 +130,7 @@ class TotalsService extends BaseService {
 
     const lineDiscounts = this.getLineDiscounts(object, discount)
     const discountedLine = lineDiscounts.find(
-      line => line.item.id === lineItem.id
+      (line) => line.item.id === lineItem.id
     )
 
     const discountAmount =
@@ -149,12 +150,12 @@ class TotalsService extends BaseService {
    * @return {int} the calculated subtotal
    */
   getRefundTotal(order, lineItems) {
-    let itemIds = order.items.map(i => i.id)
+    let itemIds = order.items.map((i) => i.id)
 
     // in case we swap a swap, we need to include swap items
     if (order.swaps && order.swaps.length) {
       for (const s of order.swaps) {
-        const swapItemIds = s.additional_items.map(el => el.id)
+        const swapItemIds = s.additional_items.map((el) => el.id)
         itemIds = [...itemIds, ...swapItemIds]
       }
     }
@@ -185,7 +186,7 @@ class TotalsService extends BaseService {
    * @param {string} lineItem - id of line item
    * @param {string} variant - id of variant in line item
    * @param {int} variantPrice - price of the variant based on region
-   * @param {int} valye - discount value
+   * @param {int} value - discount value
    * @param {string} discountType - the type of discount (fixed or percentage)
    * @return {{ string, string, int }} triples of lineitem, variant and
    *    applied discount
@@ -279,7 +280,7 @@ class TotalsService extends BaseService {
         percentage = nominator / subtotal
       }
 
-      return merged.map(item => {
+      return merged.map((item) => {
         const lineTotal = item.unit_price * item.quantity
 
         return {
@@ -293,18 +294,18 @@ class TotalsService extends BaseService {
         cart,
         type
       )
-      return merged.map(item => {
+      return merged.map((item) => {
         const discounted = allocationDiscounts.find(
-          a => a.lineItem.id === item.id
+          (a) => a.lineItem.id === item.id
         )
         return {
           item,
-          amount: !!discounted ? discounted.amount : 0,
+          amount: discounted ? discounted.amount : 0,
         }
       })
     }
 
-    return merged.map(i => ({ item: i, amount: 0 }))
+    return merged.map((i) => ({ item: i, amount: 0 }))
   }
 
   getGiftCardTotal(cart) {
@@ -331,11 +332,11 @@ class TotalsService extends BaseService {
   /**
    * Calculates the total discount amount for each of the different supported
    * discount types. If discounts aren't present or invalid returns 0.
-   * @param {Cart} Cart - the cart to calculate discounts for
+   * @param {Cart} cart - the cart to calculate discounts for
    * @return {int} the total discounts amount
    */
   getDiscountTotal(cart) {
-    let subtotal = this.getSubtotal(cart, { excludeNonDiscounts: true })
+    const subtotal = this.getSubtotal(cart, { excludeNonDiscounts: true })
 
     if (!cart.discounts || !cart.discounts.length) {
       return 0
@@ -362,7 +363,7 @@ class TotalsService extends BaseService {
         cart,
         "percentage"
       )
-      toReturn = _.sumBy(itemPercentageDiscounts, d => d.amount)
+      toReturn = _.sumBy(itemPercentageDiscounts, (d) => d.amount)
     } else if (type === "fixed" && allocation === "total") {
       toReturn = value
     } else if (type === "fixed" && allocation === "item") {
@@ -371,7 +372,7 @@ class TotalsService extends BaseService {
         cart,
         "fixed"
       )
-      toReturn = _.sumBy(itemFixedDiscounts, d => d.amount)
+      toReturn = _.sumBy(itemFixedDiscounts, (d) => d.amount)
     }
 
     if (subtotal < 0) {