chore: merge blocksuite source code (#9213)

blocksuite/affine/shared/src/commands/selection/get-block-selections.ts

@@ -0,0 +1,23 @@
+import type { BlockSelection, Command } from '@blocksuite/block-std';
+
+export const getBlockSelectionsCommand: Command<
+  never,
+  'currentBlockSelections'
+> = (ctx, next) => {
+  const currentBlockSelections = ctx.std.selection.filter('block');
+  if (currentBlockSelections.length === 0) return;
+
+  next({ currentBlockSelections });
+};
+
+declare global {
+  namespace BlockSuite {
+    interface CommandContext {
+      currentBlockSelections?: BlockSelection[];
+    }
+
+    interface Commands {
+      getBlockSelections: typeof getBlockSelectionsCommand;
+    }
+  }
+}