feat(y-indexeddb): add connected (#2208)

Co-authored-by: Himself65 <[email protected]>

packages/y-indexeddb/src/__tests__/index.spec.ts

@@ -136,10 +136,12 @@ describe('indexeddb provider', () => {
  rootDBName
  );
  provider.connect();
+ expect(provider.connected).toBe(true);
  const p1 = provider.whenSynced;
  await p1;
  const snapshot = encodeStateAsUpdate(workspace.doc);
  provider.disconnect();
+ expect(provider.connected).toBe(false);
  {
  const page = workspace.createPage('page0');
  const pageBlockId = page.addBlock('affine:page', { title: '' });
@@ -151,14 +153,18 @@ describe('indexeddb provider', () => {
  expect(updates.length).toBe(1);
  expect(updates[0]).toEqual(snapshot);
  }
+ expect(provider.connected).toBe(false);
  provider.connect();
+ expect(provider.connected).toBe(true);
  const p2 = provider.whenSynced;
  await p2;
  {
  const updates = await getUpdates(workspace.id);
  expect(updates).not.toEqual([]);
  }
+ expect(provider.connected).toBe(true);
  provider.disconnect();
+ expect(provider.connected).toBe(false);
  expect(p1).not.toBe(p2);
  });
 

packages/y-indexeddb/src/index.ts

@@ -209,6 +209,8 @@ export const createIndexedDBProvider = (
  };
  const apis = {
  connect: async () => {
+ if (connected) return;
+
  apis.whenSynced = new Promise<void>((_resolve, _reject) => {
  early = true;
  resolve = _resolve;
@@ -287,6 +289,9 @@ export const createIndexedDBProvider = (
  (await dbPromise).delete('workspace', id);
  },
  whenSynced: Promise.resolve(),
+ get connected() {
+ return connected;
+ },
  };
 
  return apis;

packages/y-indexeddb/src/shared.ts

@@ -13,6 +13,7 @@ export interface IndexedDBProvider {
  disconnect: () => void;
  cleanup: () => Promise<void>;
  whenSynced: Promise<void>;
+ readonly connected: boolean;
 }
 
 export type UpdateMessage = {