chore: merge blocksuite source code (#9213)

blocksuite/framework/block-std/src/extension/service-watcher.ts

@@ -0,0 +1,47 @@
+import type { Container } from '@blocksuite/global/di';
+import { BlockSuiteError, ErrorCode } from '@blocksuite/global/exceptions';
+
+import {
+  BlockServiceIdentifier,
+  LifeCycleWatcherIdentifier,
+  StdIdentifier,
+} from '../identifier.js';
+import type { BlockStdScope } from '../scope/index.js';
+import { LifeCycleWatcher } from './lifecycle-watcher.js';
+import type { BlockService } from './service.js';
+
+const idMap = new Map<string, number>();
+
+/**
+ * @deprecated
+ * BlockServiceWatcher is deprecated. You should reconsider where to put your feature.
+ *
+ * BlockServiceWatcher is a legacy extension that is used to watch the slots registered on block service.
+ * However, we recommend using the new extension system.
+ */
+export abstract class BlockServiceWatcher extends LifeCycleWatcher {
+  static flavour: string;
+
+  constructor(
+    std: BlockStdScope,
+    readonly blockService: BlockService
+  ) {
+    super(std);
+  }
+
+  static override setup(di: Container) {
+    if (!this.flavour) {
+      throw new BlockSuiteError(
+        ErrorCode.ValueNotExists,
+        'Flavour is not defined in the BlockServiceWatcher'
+      );
+    }
+    const id = idMap.get(this.flavour) ?? 0;
+    idMap.set(this.flavour, id + 1);
+    di.addImpl(
+      LifeCycleWatcherIdentifier(`${this.flavour}-watcher-${id}`),
+      this,
+      [StdIdentifier, BlockServiceIdentifier(this.flavour)]
+    );
+  }
+}