check that endpoint is in fact an endpoint

src/server/components/Registry.js

@@ -1,6 +1,7 @@
 const path = require('node:path');
 const fs = require('node:fs');
 
+const {Endpoint: BaseEndpoint} = require('../interfaces')
 const { Util } = require('../../util');
 const { Collection } = require('@discordjs/collection');
 
@@ -50,6 +51,7 @@ class Registry {
                         continue;
                     }
                     const endpoint = new Endpoint(server);
+                    if(!(endpoint instanceof BaseEndpoint)) throw new Error(`Attempt to load invalid endpoint at ${file.name}`)
                     endpoint.init();
 
                     if (endpoints.has(endpoint.resolveable)) throw new Error(`Error registering endpoint ${endpoint.resolveable}: an endpoint with that resolveable already exists`);