Convert rocketchat-slashcommands-topic to main module structure (#12826)

packages/rocketchat-slashcommands-topic/client/index.js

@@ -0,0 +1 @@
+import '../lib/topic';

packages/rocketchat-slashcommands-topic/lib/topic.js

@@ -1,5 +1,6 @@
 import { Meteor } from 'meteor/meteor';
-
+import { RocketChat, handleError } from 'meteor/rocketchat:lib';
+import { ChatRoom } from 'meteor/rocketchat:ui';
 /*
  * Join is a named function that will replace /topic commands
  * @param {Object} message - The message object

packages/rocketchat-slashcommands-topic/package.js

@@ -6,13 +6,11 @@ Package.describe({
 });
 
 Package.onUse(function(api) {
-
 	api.use([
 		'rocketchat:lib',
 		'ecmascript',
+		'rocketchat:authorization',
 	]);
-
-	api.use(['rocketchat:authorization'], ['client', 'server']);
-
-	api.addFiles('topic.js', ['client', 'server']);
+	api.mainModule('client/index.js', 'client');
+	api.mainModule('server/index.js', 'server');
 });

packages/rocketchat-slashcommands-topic/server/index.js

@@ -0,0 +1 @@
+import '../lib/topic';