Add monaco-promql to transform

jest-setup.js

@@ -10,17 +10,17 @@ import { matchers } from './src/matchers';
 expect.extend(matchers);
 
 window.MessageChannel = jest.fn().mockImplementation(() => {
-    let onmessage;
-    return {
-      port1: {
-        set onmessage(cb) {
-          onmessage = cb;
-        },
+  let onmessage;
+  return {
+    port1: {
+      set onmessage(cb) {
+        onmessage = cb;
       },
-      port2: {
-        postMessage: data => {
-          onmessage?.({ data });
-        },
+    },
+    port2: {
+      postMessage: (data) => {
+        onmessage?.({ data });
       },
-    };
-  });
+    },
+  };
+});

jest.config.js

@@ -1,8 +1,11 @@
 // force timezone to UTC to allow tests to work regardless of local timezone
 // generally used by snapshots, but can affect specific tests
 process.env.TZ = 'UTC';
+const { grafanaESModules, nodeModulesToTransform } = require('./.config/jest/utils');
 
 module.exports = {
-  // Jest configuration provided by Grafana scaffolding
+  // Jest configuration provided by @grafana/create-plugin
   ...require('./.config/jest.config'),
+  // Inform Jest to only transform specific node_module packages.
+  transformIgnorePatterns: [nodeModulesToTransform([...grafanaESModules, 'monaco-promql'])],
 };