key to string before check

Author: zombieJ

src/util.js

@@ -350,6 +350,15 @@ export function calcCheckStateConduct(treeNodes, checkedKeys) {
   };
 }
 
+/**
+ * Since React internal will convert key to string,
+ * we need do this to avoid `checkStrictly` use number match
+ */
+function keyListToString(keyList) {
+  if (!keyList) return keyList;
+  return keyList.map(key => String(key));
+}
+
 /**
  * Calculate the value of checked and halfChecked keys.
  * This should be only run in init or props changed.
@@ -379,6 +388,9 @@ export function calcCheckedKeys(keys, props) {
     return null;
   }
 
+  keyProps.checkedKeys = keyListToString(keyProps.checkedKeys);
+  keyProps.halfCheckedKeys = keyListToString(keyProps.halfCheckedKeys);
+
   // Do nothing if is checkStrictly mode
   if (checkStrictly) {
     return keyProps;