Change serv.world to serv.worlds. Added playerPlugins/world.js and moved a lot of stuff from login.js there. Generating multiple worlds works and moving players there works as well. A few issues here and there.

src/lib/playerPlugins/chest.js

@@ -10,7 +10,6 @@ function inject(serv, player)
     try {
       var id = await player.world.getBlockType(referencePosition);
       var blockAbove = await player.world.getBlockType(referencePosition.clone().add(new vec3(0, 1, 0)));
-
       if (id == 54) {
         if (blockAbove) {
           return;

src/lib/playerPlugins/login.js

@@ -98,15 +98,15 @@ function inject(serv,player)
   function fillTabList()
   {
     player._writeOthers('player_info',{
-        action: 0,
-        data: [{
-          UUID: player._client.uuid,
-          name: player.username,
-          properties: [],
-          gamemode: player.gameMode,
-          ping: 1
-        }]
-      });
+      action: 0,
+      data: [{
+        UUID: player._client.uuid,
+        name: player.username,
+        properties: [],
+        gamemode: player.gameMode,
+        ping: 1
+      }]
+    });
 
     player._client.write('player_info', {
       action: 0,
@@ -118,7 +118,6 @@ function inject(serv,player)
         ping: 1
       }))
     });
-
   }
 
   function announceJoin()