fix(realtime): handle null at convertChangeData (#539)

Author: rbasto1

packages/core/realtime-js/src/lib/transformers.ts

@@ -60,11 +60,15 @@ type Record = {
  */
 export const convertChangeData = (
   columns: Columns,
-  record: Record,
+  record: Record | null,
   options: { skipTypes?: string[] } = {}
 ): Record => {
   const skipTypes = options.skipTypes ?? []
 
+  if (!record) {
+    return {}
+  }
+
   return Object.keys(record).reduce((acc, rec_key) => {
     acc[rec_key] = convertColumn(rec_key, columns, record, skipTypes)
     return acc

packages/core/realtime-js/test/transformers.test.ts

@@ -46,6 +46,18 @@ test('convertChangeData', () => {
     ),
     { first_name: 'Paul', age: null }
   )
+
+  assert.deepEqual(
+    convertChangeData(
+      [
+        { name: 'first_name', type: 'text' },
+        { name: 'age', type: 'int4' },
+      ],
+      null,
+      {}
+    ),
+    {}
+  )
 })
 
 test('convertColumn', () => {