DataFrame processing: Require table rows to be array (#20357)

(cherry picked from commit 4260cd548f)

packages/grafana-data/src/dataframe/processDataFrame.ts

@@ -1,7 +1,5 @@
 // Libraries
-import isNumber from 'lodash/isNumber';
-import isString from 'lodash/isString';
-import isBoolean from 'lodash/isBoolean';
+import { isArray, isBoolean, isNumber, isString } from 'lodash';
 
 // Types
 import {
@@ -34,6 +32,10 @@ function convertTableToDataFrame(table: TableData): DataFrame {
     };
   });
 
+  if (!isArray(table.rows)) {
+    throw new Error(`Expected table rows to be array, got ${typeof table.rows}.`);
+  }
+
   for (const row of table.rows) {
     for (let i = 0; i < fields.length; i++) {
       fields[i].values.buffer.push(row[i]);