VNode key property can be undefined

Because actually it can be undefined: 4adbd971cb/src/vnode.ts (L44)
8 years ago · a5b93a7137
parent f70581a428
commit a5b93a7137
2 changed files with 2 additions and 2 deletions
--- a/src/snabbdom.ts
+++ b/src/snabbdom.ts
@ -29,7 +29,7 @@ type ArraysOf<T> = {
 type ModuleHooks = ArraysOf<Module>;

 function createKeyToOldIdx(children: Array<VNode>, beginIdx: number, endIdx: number): KeyToIndexMap {
-  let i: number, map: KeyToIndexMap = {}, key: Key, ch;
+  let i: number, map: KeyToIndexMap = {}, key: Key | undefined, ch;
  for (i = beginIdx; i <= endIdx; ++i) {
    ch = children[i];
    if (ch != null) {
--- a/src/vnode.ts
+++ b/src/vnode.ts
@ -16,7 +16,7 @@ export interface VNode {
  children: Array<VNode | string> | undefined;
  elm: Node | undefined;
  text: string | undefined;
-  key: Key;
+  key: Key | undefined;
 }

 export interface VNodeData {