diff --git a/package/scripts/postbuild.js b/package/scripts/postbuild.js
index 0878b228d..3f9de20da 100644
--- a/package/scripts/postbuild.js
+++ b/package/scripts/postbuild.js
@@ -26,6 +26,8 @@ async function recursivelyChangeExtension(fullDirPath, ext, newExt) {
 
     await fse.copy(childPath, childPath.replace(`.${ext}`, `.${newExt}`));
     await fse.remove(childPath);
+
+    return null;
   });
   await Promise.all(promises);
 }
diff --git a/package/src/components/AddressBook/v1/AddressBook.js b/package/src/components/AddressBook/v1/AddressBook.js
index 7da83606e..fb1ceeb02 100644
--- a/package/src/components/AddressBook/v1/AddressBook.js
+++ b/package/src/components/AddressBook/v1/AddressBook.js
@@ -148,7 +148,14 @@ class AddressBook extends Component {
   // Render Methods
   //
   renderAccordionFormList() {
-    const { account: { addressBook }, addNewItemButtonText, components: { AccordionFormList, AddressForm }, deleteItemButtonText, entryFormSubmitButtonText, isSaving } = this.props;
+    const {
+      account: { addressBook },
+      addNewItemButtonText,
+      components: { AccordionFormList, AddressForm },
+      deleteItemButtonText,
+      entryFormSubmitButtonText,
+      isSaving
+    } = this.props;
 
     const items = addressBook.map(({ _id, ...address }) => ({
       id: _id,
diff --git a/package/src/components/CartSummary/v1/CartSummary.js b/package/src/components/CartSummary/v1/CartSummary.js
index 650b4ef02..93e5a1764 100644
--- a/package/src/components/CartSummary/v1/CartSummary.js
+++ b/package/src/components/CartSummary/v1/CartSummary.js
@@ -141,14 +141,14 @@ class CartSummary extends Component {
      * The text for the "Items" label text.
      */
     itemLabelText: PropTypes.string,
-    /**
-     * The text for the "items" header text.
-     */
-    itemsText: PropTypes.string,
     /**
      * Quantity of products in shopping cart
      */
     itemsQuantity: PropTypes.number,
+    /**
+     * The text for the "items" header text.
+     */
+    itemsText: PropTypes.string,
     /**
      * The text for the "Order total" label text.
      */
@@ -168,7 +168,7 @@ class CartSummary extends Component {
     /**
      * The text for the "Tax" label text.
      */
-    taxLabelText: PropTypes.string,
+    taxLabelText: PropTypes.string
   }
 
   static defaultProps = {
@@ -180,7 +180,7 @@ class CartSummary extends Component {
     promoCodeText: "Promo code applied",
     shippingLabelText: "Shipping",
     surchargesLabelText: "Surcharges",
-    taxLabelText: "Tax",
+    taxLabelText: "Tax"
   }
 
   renderHeader() {
@@ -228,7 +228,7 @@ class CartSummary extends Component {
       orderTotalLabelText,
       shippingLabelText,
       surchargesLabelText,
-      taxLabelText,
+      taxLabelText
     } = this.props;
 
     // Use "-" to indicate we are still calculating this field.
diff --git a/package/src/components/CheckoutEmailAddress/v1/CheckoutEmailAddress.js b/package/src/components/CheckoutEmailAddress/v1/CheckoutEmailAddress.js
index e8ef680b2..bf56d84a4 100644
--- a/package/src/components/CheckoutEmailAddress/v1/CheckoutEmailAddress.js
+++ b/package/src/components/CheckoutEmailAddress/v1/CheckoutEmailAddress.js
@@ -40,7 +40,7 @@ class CheckoutEmailAddress extends Component {
     /**
      * The text for the "Signed in as" label text.
      */
-    signedInText: PropTypes.string,
+    signedInText: PropTypes.string
   };
 
   static defaultProps = {
diff --git a/package/src/components/Field/v1/Field.js b/package/src/components/Field/v1/Field.js
index a2a6b6c51..e536eb29f 100644
--- a/package/src/components/Field/v1/Field.js
+++ b/package/src/components/Field/v1/Field.js
@@ -70,7 +70,7 @@ class Field extends Component {
     /**
      * The text for the "Optional" label text.
      */
-    optionalLabelText: PropTypes.string,
+    optionalLabelText: PropTypes.string
   };
 
   static defaultProps = {
diff --git a/package/src/components/MiniCartSummary/v1/MiniCartSummary.js b/package/src/components/MiniCartSummary/v1/MiniCartSummary.js
index b48d5fb2c..271d1f1da 100644
--- a/package/src/components/MiniCartSummary/v1/MiniCartSummary.js
+++ b/package/src/components/MiniCartSummary/v1/MiniCartSummary.js
@@ -45,19 +45,19 @@ class MiniCartSummary extends Component {
      * The computed taxes for items in the cart.
      */
     displayTax: PropTypes.string,
-    /**
-     * The text for the "Tax" label text.
-     */
-    taxLabelText: PropTypes.string,
     /**
      * The text for the "Subtotal" label text.
      */
     subtotalLabelText: PropTypes.string,
+    /**
+     * The text for the "Tax" label text.
+     */
+    taxLabelText: PropTypes.string
   };
 
   static defaultProps = {
     taxLabelText: "Tax",
-    subtotalLabelText: "Subtotal",
+    subtotalLabelText: "Subtotal"
   }
 
   renderTax = () => {
diff --git a/package/src/components/StripePaymentInput/v1/StripePaymentInput.js b/package/src/components/StripePaymentInput/v1/StripePaymentInput.js
index 0d1c7def7..5fe0af16f 100644
--- a/package/src/components/StripePaymentInput/v1/StripePaymentInput.js
+++ b/package/src/components/StripePaymentInput/v1/StripePaymentInput.js
@@ -61,16 +61,16 @@ class StripePaymentInput extends Component {
      * and `amount` properties.
      */
     onSubmit: PropTypes.func,
-     /**
-     * The text for the "Your Information is private and secure." caption text.
-     */
-    secureCaptionText: PropTypes.string,
+    /**
+    * The text for the "Your Information is private and secure." caption text.
+    */
+    secureCaptionText: PropTypes.string
   };
 
   static defaultProps = {
     onReadyForSaveChange() {},
     onSubmit() {},
-    secureCaptionText: "Your Information is private and secure.",
+    secureCaptionText: "Your Information is private and secure."
   };
 
   componentDidMount() {