Chore: adding platform independent typings for e2e tests. (#27768)

* added typings that are platform independent in the tests.

* fixing nits.

e2e/suite1/specs/query-editor.spec.ts

@@ -29,7 +29,7 @@ e2e.scenario({
 
     cy.contains(queryText.slice(0, -1)).should('be.visible');
 
-    e2e.components.QueryField.container().type('{ctrl}z');
+    e2e.components.QueryField.container().type(e2e.typings.undo());
 
     cy.contains(queryText).should('be.visible');
   },

packages/grafana-e2e/src/index.ts

@@ -8,6 +8,7 @@ import { getScenarioContext, setScenarioContext } from './support/scenarioContex
 import { e2eFactory } from './support';
 import { selectors } from '@grafana/e2e-selectors';
 import * as flows from './flows';
+import * as typings from './typings';
 
 const e2eObject = {
   env: (args: string) => Cypress.env(args),
@@ -16,6 +17,7 @@ const e2eObject = {
   imgSrcToBlob: (url: string) => Cypress.Blob.imgSrcToBlob(url),
   scenario: (args: ScenarioArguments) => e2eScenario(args),
   pages: e2eFactory({ selectors: selectors.pages }),
+  typings,
   components: e2eFactory({ selectors: selectors.components }),
   flows,
   getScenarioContext,

packages/grafana-e2e/src/typings/index.ts

+export { undo } from './undo';

packages/grafana-e2e/src/typings/undo.ts

+// https://nodejs.org/api/os.html#os_os_platform
+enum Platform {
+  osx = 'darwin',
+  windows = 'win32',
+  linux = 'linux',
+  aix = 'aix',
+  freebsd = 'freebsd',
+  openbsd = 'openbsd',
+  sunos = 'sunos',
+}
+
+export const undo = () => {
+  switch (Cypress.platform) {
+    case Platform.osx:
+      return '{cmd}z';
+    default:
+      return '{ctrl}z';
+  }
+};