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refactor(VNode): improve helper types (#392)

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This commit is contained in:
Dmitry Sharshakov 2019-10-28 03:54:54 +03:00 committed by Evan You
parent e581b14dff
commit e7e3eb8662
1 changed files with 5 additions and 2 deletions
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7
packages/runtime-core/src/vnode.ts
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@ -232,7 +232,10 @@ export function createVNode(
return vnode
}
export function cloneVNode(vnode: VNode, extraProps?: Data): VNode {
export function cloneVNode<T, U>(
vnode: VNode<T, U>,
extraProps?: Data
): VNode<T, U> {
// This is intentionally NOT using spread or extend to avoid the runtime
// key enumeration cost.
return {
@ -279,7 +282,7 @@ export function createCommentVNode(
: createVNode(Comment, null, text)
}
export function normalizeVNode(child: VNodeChild): VNode {
export function normalizeVNode<T, U>(child: VNodeChild<T, U>): VNode<T, U> {
if (child == null) {
// empty placeholder
return createVNode(Comment)