js_examples: Migrate and test register_queue example.

templates/zerver/api/register-queue.md

@@ -55,23 +55,8 @@ potentially messy races, etc.
 {tab|js}
 
 More examples and documentation can be found [here](https://github.com/zulip/zulip-js).
-```js
-const zulip = require('zulip-js');
 
-// Pass the path to your zuliprc file here.
-const config = {
-    zuliprc: 'zuliprc',
-};
-
-zulip(config).then((client) => {
-    // Register a queue
-    const params = {
-        event_types: ['message']
-    };
-    client.queues.register(params).then(console.log);
-});
-
-```
+{generate_code_example(javascript)|/register:post|example}
 
 {tab|curl}
 

zerver/openapi/javascript_examples.js

@@ -45,6 +45,7 @@ const ExamplesHandler = function () {
         await generate_validation_data(client, examples.get_stream_topics);
         await generate_validation_data(client, examples.get_subscriptions);
         await generate_validation_data(client, examples.get_users);
+        await generate_validation_data(client, examples.register_queue);
 
         console.log(JSON.stringify(response_data));
         return;
@@ -188,4 +189,15 @@ add_example('get_users', '/users:get', 200, async (client) => {
     return [result_1, result_2];
 });
 
+add_example('register_queue', '/register:post', 200, async (client) => {
+    // {code_example|start}
+    // Register a queue
+    const params = {
+        event_types: ['message'],
+    };
+
+    return await client.queues.register(params);
+    // {code_example|end}
+});
+
 main();