refactor: init package @affine/workspace (#1661)

packages/workspace/src/utils.ts

@@ -0,0 +1,24 @@
+import { __unstableSchemas, AffineSchemas } from '@blocksuite/blocks/models';
+import type { BlobOptionsGetter, Generator } from '@blocksuite/store';
+import { Workspace } from '@blocksuite/store';
+
+const hashMap = new Map<string, Workspace>();
+export const createEmptyBlockSuiteWorkspace = (
+  id: string,
+  blobOptionsGetter?: BlobOptionsGetter,
+  idGenerator?: Generator
+): Workspace => {
+  if (hashMap.has(id)) {
+    return hashMap.get(id) as Workspace;
+  }
+  const workspace = new Workspace({
+    id,
+    isSSR: typeof window === 'undefined',
+    blobOptionsGetter,
+    idGenerator,
+  })
+    .register(AffineSchemas)
+    .register(__unstableSchemas);
+  hashMap.set(id, workspace);
+  return workspace;
+};