fix: decodehex issue with null string

src/utils/datalayer-utils.js

@@ -1,33 +1,33 @@
-export const encodeHex = (str) => {
-  return Buffer.from(str).toString('hex');
-};
-
-export const decodeHex = (str) => {
-  return Buffer.from(str.replace('0x', ''), 'hex').toString();
-};
-
-export const decodeDataLayerResponse = (data) => {
-  return data.keys_values.map((item) => ({
-    key: decodeHex(item.key),
-    value: decodeHex(item.value),
-  }));
-};
-
-export const keyValueToChangeList = (key, value, includeDelete) => {
-  const changeList = [];
-
-  if (includeDelete) {
-    changeList.push({
-      action: 'delete',
-      key: encodeHex(key),
-    });
-  }
-
-  changeList.push({
-    action: 'insert',
-    key: encodeHex(key),
-    value: encodeHex(value),
-  });
-
-  return changeList;
-};
+export const encodeHex = (str) => {
+  return Buffer.from(str).toString('hex');
+};
+
+export const decodeHex = (str = '') => {
+  return Buffer.from(str.replace('0x', ''), 'hex').toString();
+};
+
+export const decodeDataLayerResponse = (data) => {
+  return data.keys_values.map((item) => ({
+    key: decodeHex(item.key),
+    value: decodeHex(item.value),
+  }));
+};
+
+export const keyValueToChangeList = (key, value, includeDelete) => {
+  const changeList = [];
+
+  if (includeDelete) {
+    changeList.push({
+      action: 'delete',
+      key: encodeHex(key),
+    });
+  }
+
+  changeList.push({
+    action: 'insert',
+    key: encodeHex(key),
+    value: encodeHex(value),
+  });
+
+  return changeList;
+};