diff --git a/assets/js/frontend/blocks/checkout/bh-wc-bitcoin-gateway-blocks-checkout.js b/assets/js/frontend/blocks/checkout/bh-wc-bitcoin-gateway-blocks-checkout.js
index cf8ce19..0c98ec6 100644
--- a/assets/js/frontend/blocks/checkout/bh-wc-bitcoin-gateway-blocks-checkout.js
+++ b/assets/js/frontend/blocks/checkout/bh-wc-bitcoin-gateway-blocks-checkout.js
@@ -1,3 +1,6 @@
+/**
+ * External dependencies
+ */
 import { registerPaymentMethod } from '@woocommerce/blocks-registry';
 import { decodeEntities } from '@wordpress/html-entities';
 import { getSetting } from '@woocommerce/settings';
diff --git a/tests/e2e/config/jest.config.js b/tests/e2e/config/jest.config.js
index 046ecbe..f62454f 100644
--- a/tests/e2e/config/jest.config.js
+++ b/tests/e2e/config/jest.config.js
@@ -6,5 +6,3 @@ const jestConfig = useE2EJestConfig( {
 } );
 
 module.exports = jestConfig;
-
-defaultJson = 'default.json';
diff --git a/tests/e2e/specs/bh-wc-bitcoin-gateway/configure-bitcoin-xpub.before.js b/tests/e2e/specs/bh-wc-bitcoin-gateway/configure-bitcoin-xpub.before.js
index 0e764b5..b865682 100644
--- a/tests/e2e/specs/bh-wc-bitcoin-gateway/configure-bitcoin-xpub.before.js
+++ b/tests/e2e/specs/bh-wc-bitcoin-gateway/configure-bitcoin-xpub.before.js
@@ -4,7 +4,7 @@ const {
 	clearAndFillInput,
 } = require( '@woocommerce/e2e-utils' );
 
-const configureBitcoinXpub = async ( dispatch ) => {
+const configureBitcoinXpub = async () => {
 	await merchant.openSettings( 'checkout', 'bitcoin_gateway' );
 
 	// TODO: read from env.secret.
diff --git a/tests/e2e/specs/bh-wc-bitcoin-gateway/place-bitcoin-order.before.js b/tests/e2e/specs/bh-wc-bitcoin-gateway/place-bitcoin-order.before.js
index adc4675..85931f0 100644
--- a/tests/e2e/specs/bh-wc-bitcoin-gateway/place-bitcoin-order.before.js
+++ b/tests/e2e/specs/bh-wc-bitcoin-gateway/place-bitcoin-order.before.js
@@ -3,7 +3,7 @@ const { shopper, uiUnblocked } = require( '@woocommerce/e2e-utils' );
 const config = require( 'config' );
 const simpleProductName = config.get( 'products.simple.name' );
 
-const placeBitcoinOrderBefore = async ( dispatch ) => {
+const placeBitcoinOrderBefore = async () => {
 	await shopper.goToShop();
 
 	await shopper.addToCartFromShopPage( simpleProductName );
diff --git a/tests/e2e/specs/bh-wc-bitcoin-gateway/place-order-block-checkout.test.js b/tests/e2e/specs/bh-wc-bitcoin-gateway/place-order-block-checkout.test.js
index 2a63ba1..5cd30af 100644
--- a/tests/e2e/specs/bh-wc-bitcoin-gateway/place-order-block-checkout.test.js
+++ b/tests/e2e/specs/bh-wc-bitcoin-gateway/place-order-block-checkout.test.js
@@ -1,3 +1,6 @@
+/**
+ * External dependencies
+ */
 import { expect } from '@jest/globals';
 
 const {
diff --git a/tests/e2e/specs/bh-wc-bitcoin-gateway/refresh-details.test.js b/tests/e2e/specs/bh-wc-bitcoin-gateway/refresh-details.test.js
index 30af1e0..ae47443 100644
--- a/tests/e2e/specs/bh-wc-bitcoin-gateway/refresh-details.test.js
+++ b/tests/e2e/specs/bh-wc-bitcoin-gateway/refresh-details.test.js
@@ -1,3 +1,8 @@
+/**
+ * External dependencies
+ */
+import { expect } from '@jest/globals';
+
 // Fix bugs when refreshing the payment details box (i.e. looking for new transactions).
 
 // 1. Place an order, arrive on the Thank You page, press refresh.
@@ -6,8 +11,6 @@
 // 2. Place an order, arrive on the Thank You page, press refresh twice.
 // First refresh is overwriting data needed for subsequent requests.
 
-import { expect } from '@jest/globals';
-
 const {
 	uiUnblocked,
 	merchant,