From 0b905d01d33e66b2ca6a22bd8254299ca4fbf1e6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9E=97=E7=86=A0?= <lianjie.lj@alibaba-inc.com>
Date: Mon, 4 May 2020 15:36:59 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=F0=9F=90=9B=20add=20pollyfill=20for=20v?=
 =?UTF-8?q?ision=20page.getHistory?=
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---
 packages/designer/src/document/document-model.ts | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/packages/designer/src/document/document-model.ts b/packages/designer/src/document/document-model.ts
index eb92fb1c7..ac739d625 100644
--- a/packages/designer/src/document/document-model.ts
+++ b/packages/designer/src/document/document-model.ts
@@ -12,8 +12,8 @@ import { uniqueId } from '@ali/lowcode-utils';
 
 export type GetDataType<T, NodeType> = T extends undefined
   ? NodeType extends {
-      schema: infer R;
-    }
+    schema: infer R;
+  }
     ? R
     : any
   : T;
@@ -465,6 +465,14 @@ export class DocumentModel {
   getRoot() {
     return this.rootNode;
   }
+
+  /**
+   * 兼容vision
+   */
+  getHistory(): History {
+    return this.history;
+  }
+
   get root() {
     return this.rootNode;
   }