From d9ffe4c736a1ede3c562b5425acc2618b2003a29 Mon Sep 17 00:00:00 2001
From: Yanzhen Yu <yanzhen@smartx.com>
Date: Sun, 17 Feb 2019 15:54:14 +0800
Subject: [PATCH] check attribute is null instead of any falsy value

---
 src/replay/index.ts            | 2 +-
 typings/record/collection.d.ts | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)
 create mode 100644 typings/record/collection.d.ts

diff --git a/src/replay/index.ts b/src/replay/index.ts
index 1c345fda..22df9d1e 100644
--- a/src/replay/index.ts
+++ b/src/replay/index.ts
@@ -409,7 +409,7 @@ export class Replayer {
           for (const attributeName in mutation.attributes) {
             if (typeof attributeName === 'string') {
               const value = mutation.attributes[attributeName];
-              if (value) {
+              if (value !== null) {
                 ((target as Node) as Element).setAttribute(
                   attributeName,
                   value,
diff --git a/typings/record/collection.d.ts b/typings/record/collection.d.ts
new file mode 100644
index 00000000..c6eb7fed
--- /dev/null
+++ b/typings/record/collection.d.ts
@@ -0,0 +1,4 @@
+import { removedNodeMutation } from '../types';
+export declare function deepDelete(addsSet: Set<Node>, n: Node): void;
+export declare function isParentRemoved(removes: removedNodeMutation[], n: Node): boolean;
+export declare function isParentDropped(droppedSet: Set<Node>, n: Node): boolean;