blackteay/vant
1
0
Fork 0
mirror of https://gitee.com/vant-contrib/vant.git synced 2025-05-04 23:06:35 +08:00
Code Issues Projects Releases Wiki Activity

types: improve useParent typing

Browse Source
This commit is contained in:
chenjiahan 2020-09-21 18:38:33 +08:00
parent 7d0340a35b
commit 5359120ed3
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/composition/use-relation.ts
View File

@ -1,11 +1,11 @@
import { inject, computed, onUnmounted } from 'vue';
export type Parent<T = unknown> = null | {
children: T[];
};
type Parent = { children: unknown[] };
export function useParent<T = unknown>(key: string, child: T = {} as T) {
const parent = inject<Parent<T>>(key, null);
type Child<T> = T extends { children: (infer U)[] } ? U : never;
export function useParent<P extends Parent>(key: string, child: Child<P>) {
const parent = inject<P | null>(key, null);
if (parent) {
const { children } = parent;