test: switch example app test config files to ts

Author: ahnpnl

examples/example-app-monorepo/apps/app1/jest-esm-isolated.config.mjs

@@ -0,0 +1,18 @@
+import type { JestConfigWithTsJest } from 'ts-jest';
+
+import jestCfg from './jest-esm.config';
+
+export default {
+    ...jestCfg,
+    transform: {
+        '^.+\\.(ts|js|html|svg)$': [
+            'jest-preset-angular',
+            {
+                tsconfig: '<rootDir>/tsconfig-esm.spec.json',
+                stringifyContentPathRegex: '\\.(html|svg)$',
+                isolatedModules: true,
+                useESM: true,
+            },
+        ],
+    },
+} satisfies JestConfigWithTsJest;