diff --git a/cf_list_create.js b/cf_list_create.js
index bdef4eb..61260f7 100644
--- a/cf_list_create.js
+++ b/cf_list_create.js
@@ -1,6 +1,7 @@
 import fs from 'fs';
-import { DRY_RUN, LIST_ITEM_LIMIT } from './lib/constants.js';
-import { createZeroTrustLists } from './lib/api.js';
+import { DRY_RUN, FAST_MODE, LIST_ITEM_LIMIT } from './lib/constants.js';
+import { createZeroTrustListsAtOnce, createZeroTrustListsOneByOne } from './lib/api.js';
+import { truncateArray } from './lib/utils.js';
 
 if (!process.env.CI) console.log(`List item limit set to ${LIST_ITEM_LIMIT}`);
 
@@ -99,7 +100,7 @@ fs.readFile('input.csv', 'utf8', async (err, data) => {
   // Trim array to 300,000 domains if it's longer than that
   if (domains.length > LIST_ITEM_LIMIT) {
     console.warn(`${domains.length} domains found in input.csv - input has to be trimmed to ${LIST_ITEM_LIMIT} domains`);
-    domains = trimArray(domains, LIST_ITEM_LIMIT);
+    domains = truncateArray(domains, LIST_ITEM_LIMIT);
   }
 
   const listsToCreate = Math.ceil(domains.length / 1000);
@@ -110,9 +111,10 @@ fs.readFile('input.csv', 'utf8', async (err, data) => {
   // TODO: we should probably continue, just without making any real requests to Cloudflare
   if (DRY_RUN) return console.log('Dry run complete - no lists were created. If this was not intended, please remove the DRY_RUN environment variable and try again.');
 
-  await createZeroTrustLists(domains)
-});
+  if (FAST_MODE) {
+    createZeroTrustListsAtOnce(items);
+    return;
+  }
 
-function trimArray(arr, size) {
-  return arr.slice(0, size);
-}
+  createZeroTrustListsOneByOne(items);
+});
diff --git a/lib/api.js b/lib/api.js
index 628ec9e..ccd36c7 100644
--- a/lib/api.js
+++ b/lib/api.js
@@ -1,4 +1,4 @@
-import { FAST_MODE, LIST_ITEM_SIZE } from "./constants.js";
+import { LIST_ITEM_SIZE } from "./constants.js";
 import { requestGateway } from "./helpers.js";
 
 /**
@@ -24,7 +24,7 @@ const createZeroTrustList = (name, items) =>
  * Creates Zero Trust lists sequentially.
  * @param {string[]} items The domains.
  */
-const createZeroTrustListsOneByOne = async (items) => {
+export const createZeroTrustListsOneByOne = async (items) => {
   let totalListNumber = Math.ceil(items.length / LIST_ITEM_SIZE);
 
   for (let i = 0, listNumber = 1; i < items.length; i += LIST_ITEM_SIZE) {
@@ -49,7 +49,7 @@ const createZeroTrustListsOneByOne = async (items) => {
  * Creates all Zero Trust lists at once.
  * @param {string[]} items The domains.
  */
-const createZeroTrustListsAtOnce = async (items) => {
+export const createZeroTrustListsAtOnce = async (items) => {
   const totalListNumber = Math.ceil(items.length / LIST_ITEM_SIZE);
   const requests = [];
 
@@ -70,16 +70,3 @@ const createZeroTrustListsAtOnce = async (items) => {
     console.error(`Error occurred while creating lists - ${err.toString()}`);
   }
 };
-
-/**
- * Create Zero Trust lists.
- * @param {string[]} items The domains.
- * @returns {Promise<void>}
- */
-export const createZeroTrustLists = (items) => {
-  if (FAST_MODE) {
-    return createZeroTrustListsAtOnce(items);
-  }
-
-  return createZeroTrustListsOneByOne(items);
-};
diff --git a/lib/utils.js b/lib/utils.js
index 9c1037f..1d13e0c 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -4,3 +4,11 @@
  */
 export const sleep = (ms = 350) =>
   new Promise((resolve) => setTimeout(resolve, ms));
+
+/**
+ * Truncates an array to the specified size.
+ * @param {any[]} arr The array to be truncated.
+ * @param {number} size The size to which the array will be truncated.
+ * @returns {any[]}
+ */
+export const truncateArray = (arr, size) => arr.slice(0, size);