working case of Jest augmentation with wdio matchers

Author: dprevost-LMI

playgrounds/jest/.gitignore

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+export declare global {
+  var standalone: WebdriverIO.Browser;
+}

playgrounds/jest/global.d.ts

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+import { inject } from "vitest";
+
+export default {
+  preset: 'ts-jest/presets/default-esm',
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.[jt]s$': '$1',
+  },
+  testEnvironment: 'node',
+  maxWorkers: 1,
+  setupFilesAfterEnv: ['./jest.setup.after-env.ts'],
+  testPathIgnorePatterns: ['.history', 'node_modules'],
+  extensionsToTreatAsEsm: ['.ts'],
+  transform: {
+    '^.+\\.ts$': ['ts-jest', {
+      useESM: true,
+      injectGlobals: true
+    }]
+  }
+};

playgrounds/jest/jest.config.mjs

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+import { jest, beforeAll, afterAll, expect } from "@jest/globals";
+import { remote } from "webdriverio";
+import { config } from "./wdio.conf";
+import { matchers } from "expect-webdriverio";
+
+jest.setTimeout(30000);
+
+beforeAll(async () => {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  expect.extend(matchers as Record<string, any>);
+
+  // The enhanced expect already has matchers extended, no need to extend again
+  globalThis.standalone = await remote(config);
+  console.log('Browser session started with sessionId:', globalThis.standalone.sessionId);
+});
+
+afterAll(async () => {
+    console.log('Ending browser session with sessionId:', globalThis.standalone?.sessionId);
+  await globalThis.standalone?.deleteSession();
+});