Convert rocketchat-spotify to main module structure (#12832)

packages/rocketchat-spotify/client/index.js

@@ -0,0 +1,3 @@
+import '../lib/client/widget';
+import '../lib/client/oembedSpotifyWidget.html';
+import '../lib/spotify';

packages/rocketchat-spotify/lib/spotify.js

@@ -2,6 +2,7 @@
  * Spotify a named function that will process Spotify links or syntaxes (ex: spotify:track:1q6IK1l4qpYykOaWaLJkWG)
  * @param {Object} message - The message object
  */
+import { RocketChat } from 'meteor/rocketchat:lib';
 import _ from 'underscore';
 import s from 'underscore.string';
 

packages/rocketchat-spotify/package.js

@@ -12,9 +12,6 @@ Package.onUse(function(api) {
 		'rocketchat:oembed',
 		'rocketchat:lib',
 	]);
-
-	api.addFiles('lib/client/widget.js', 'client');
-	api.addFiles('lib/client/oembedSpotifyWidget.html', 'client');
-
-	api.addFiles('lib/spotify.js', ['server', 'client']);
+	api.mainModule('client/index.js', 'client');
+	api.mainModule('server/index.js', 'server');
 });

packages/rocketchat-spotify/server/index.js

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