theluyuan/vue3-yuanma
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

refactor(keep-alive): use property initializer

Browse Source
This commit is contained in:
Evan You 2018-09-27 10:19:36 -04:00
parent 1cc7734c24
commit 86d95cf33b
1 changed files with 2 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
packages/core/src/optional/keepAlive.ts
View File

@ -16,19 +16,12 @@ type Cache = Map<CacheKey, VNode>
export const KeepAliveSymbol = Symbol() export const KeepAliveSymbol = Symbol()
export class KeepAlive extends Component<{}, KeepAliveProps> { export class KeepAlive extends Component<{}, KeepAliveProps> {
cache: Cache cache: Cache = new Map()
keys: Set<CacheKey> keys: Set<CacheKey> = new Set()
// to be set in createRenderer when instance is created // to be set in createRenderer when instance is created
$unmount: (instance: MountedComponent) => void $unmount: (instance: MountedComponent) => void
created() {
this.cache = new Map()
// keys represents the "freshness" of cached components
// oldest cached ones will be pruned first when cache count exceeds max
this.keys = new Set()
}
beforeUnmount() { beforeUnmount() {
this.cache.forEach(vnode => { this.cache.forEach(vnode => {
// change flag so it can be properly unmounted // change flag so it can be properly unmounted