Implement headless tic-tac-toe CLI

Summary: Add a CLI app to play tic-tac-toe from the terminal.

Reviewed By: lblasa

Differential Revision: D36548528

fbshipit-source-id: 4cdfb9d8887cb0d4d0100a822f39a4f9fb25aa9b

desktop/examples/headless-tic-tac-toe/README.md

@@ -0,0 +1,17 @@
+# headless-tic-tac-toe
+
+**Experimental feature!**
+
+Flipper can run plugins in a headless mode - expose their API over the wire. This is an example of how it might look like.
+
+## Quick start
+
+0. Clone [Flipper repo](https://github.com/facebook/flipper)
+0. Navigate to `/desktop` folder.
+0. Run `yarn`
+0. Run `yarn flipper-server`
+0. Start you mobile device (or any other device that supports Flipper).
+0. Open your app that supports "ReactNativeTicTacToe" plugin (for instance, [React Native Example app](https://github.com/facebook/flipper/tree/main/react-native/ReactNativeFlipperExample)).
+0. In a different terminal window, navigate to `/desktop/examples/headless-demo`
+0. Run `yarn`
+0. Run `yarn start`

desktop/examples/headless-tic-tac-toe/index.js

@@ -7,8 +7,18 @@
  * @format
  */
 
+const {TicTacToeClient} = require('./ticTacToeClient');
+
 const main = async () => {
-  // TODO: Implement me
+  const ticTacToeClient = new TicTacToeClient();
+  await ticTacToeClient.init();
+
+  const targetClientId = await ticTacToeClient.selectClient();
+  await ticTacToeClient.startTicTacToePlugin(targetClientId);
+  ticTacToeClient.startGame(targetClientId);
 };
 
-main().catch(console.error);
+main().catch((e) => {
+  console.error('main -> error', e);
+  process.exit(1);
+});