[No QA] [TS migration] Migrate 'installApp.js' test to TypeScript

tests/e2e/testRunner.js

@@ -79,8 +79,8 @@ try {
 
 const runTests = async () => {
     Logger.info('Installing apps and reversing port');
-    await installApp('android', config.MAIN_APP_PACKAGE, mainAppPath);
-    await installApp('android', config.DELTA_APP_PACKAGE, deltaAppPath);
+    await installApp(config.MAIN_APP_PACKAGE, mainAppPath);
+    await installApp(config.DELTA_APP_PACKAGE, deltaAppPath);
     await reversePort();
 
     // Start the HTTP server

tests/e2e/utils/installApp.ts

@@ -0,0 +1,25 @@
+import type {ExecException} from 'child_process';
+import execAsync from './execAsync';
+import type {PromiseWithAbort} from './execAsync';
+import * as Logger from './logger';
+
+/**
+ * Installs the app on the currently connected device for the given platform.
+ * It removes the app first if it already exists, so it's a clean installation.
+ */
+export default function (packageName: string, path: string, platform = 'android'): PromiseWithAbort {
+    if (platform !== 'android') {
+        throw new Error(`installApp() missing implementation for platform: ${platform}`);
+    }
+
+    // Uninstall first, then install
+    return (
+        execAsync(`adb uninstall ${packageName}`)
+            .catch((error: ExecException) => {
+                // Ignore errors
+                Logger.warn('Failed to uninstall app:', error);
+            })
+            // eslint-disable-next-line @typescript-eslint/no-misused-promises
+            .finally(() => execAsync(`adb install ${path}`))
+    );
+}