chore: Typescript database models (#2886)

closes #2798

server/collaboration/authentication.ts

@@ -1,10 +1,8 @@
 import { onAuthenticatePayload } from "@hocuspocus/server";
-import { Document } from "@server/models";
+import Document from "@server/models/Document";
+import { can } from "@server/policies";
 import { getUserForJWT } from "@server/utils/jwt";
 import { AuthenticationError } from "../errors";
-import policy from "../policies";
-
-const { can } = policy;
 
 export default class Authentication {
   async onAuthenticate({

server/collaboration/persistence.ts

@@ -1,8 +1,9 @@
 import { onChangePayload, onLoadDocumentPayload } from "@hocuspocus/server";
+import invariant from "invariant";
 import { debounce } from "lodash";
 import * as Y from "yjs";
 import Logger from "@server/logging/logger";
-import { Document } from "@server/models";
+import Document from "@server/models/Document";
 import documentUpdater from "../commands/documentUpdater";
 import markdownToYDoc from "./utils/markdownToYDoc";
 
@@ -20,6 +21,7 @@ export default class Persistence {
     }
 
     const document = await Document.findByPk(documentId);
+    invariant(document, "Document not found");
 
     if (document.state) {
       const ydoc = new Y.Doc();