refactored domain processing code

lib/helpers.js

@@ -40,3 +40,22 @@ const request = async (url, options) => {
  */
 export const requestGateway = (path, options) =>
   request(`${API_HOST}/accounts/${ACCOUNT_ID}/gateway${path}`, options);
+
+/**
+ * Normalizes a domain.
+ * @param {string} value The value to be normalized.
+ * @param {boolean} isAllowlisting Whether the value is to be whitelisted.
+ * @returns {string}
+ */
+export const normalizeDomain = (value, isAllowlisting) => {
+  const normalized = value
+    .replace(/(0\.0\.0\.0|127\.0\.0\.1|::1|::)\s+/, "")
+    .replace("||", "")
+    .replace("^$important", "")
+    .replace("*.", "")
+    .replace("^", "");
+
+  if (isAllowlisting) return normalized.replace("@@||", "");
+
+  return normalized;
+};