Elasticsearch: Migrate queryeditor to React (#28033)

Co-authored-by: Zoltán Bedi <zoltan.bedi@gmail.com>
Co-authored-by: Torkel Ödegaard <torkel@grafana.com>

public/app/plugins/datasource/elasticsearch/utils.test.ts

@@ -0,0 +1,36 @@
+import { removeEmpty } from './utils';
+
+describe('removeEmpty', () => {
+  it('Should remove all empty', () => {
+    const original = {
+      stringsShouldBeKept: 'Something',
+      unlessTheyAreEmpty: '',
+      nullToBeRemoved: null,
+      undefinedToBeRemoved: null,
+      zeroShouldBeKept: 0,
+      booleansShouldBeKept: false,
+      emptyObjectsShouldBeRemoved: {},
+      emptyArrayShouldBeRemoved: [],
+      nonEmptyArraysShouldBeKept: [1, 2, 3],
+      nestedObjToBeRemoved: {
+        toBeRemoved: undefined,
+      },
+      nestedObjectToKeep: {
+        thisShouldBeRemoved: null,
+        thisShouldBeKept: 'Hello, Grafana',
+      },
+    };
+
+    const expectedResult = {
+      stringsShouldBeKept: 'Something',
+      zeroShouldBeKept: 0,
+      booleansShouldBeKept: false,
+      nonEmptyArraysShouldBeKept: [1, 2, 3],
+      nestedObjectToKeep: {
+        thisShouldBeKept: 'Hello, Grafana',
+      },
+    };
+
+    expect(removeEmpty(original)).toStrictEqual(expectedResult);
+  });
+});