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refactor: tweak watch getter logic

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This commit is contained in:
Evan You 2019-05-30 21:31:53 +08:00
parent fc5bf5cbe1
commit caad39c353
1 changed files with 4 additions and 5 deletions
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9
packages/runtime-core/src/reactivity.ts
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@ -33,6 +33,8 @@ import { currentInstance } from './component'
import { queueJob, queuePostFlushCb } from './scheduler' import { queueJob, queuePostFlushCb } from './scheduler'
import { EMPTY_OBJ, isObject, isArray } from '@vue/shared' import { EMPTY_OBJ, isObject, isArray } from '@vue/shared'
// record effects created during a component's setup() so that they can be
// stopped when the component unmounts
function recordEffect(effect: ReactiveEffect) { function recordEffect(effect: ReactiveEffect) {
if (currentInstance) { if (currentInstance) {
;(currentInstance.effects || (currentInstance.effects = [])).push(effect) ;(currentInstance.effects || (currentInstance.effects = [])).push(effect)
@ -71,11 +73,8 @@ export function watch<T>(
? queueJob ? queueJob
: queuePostFlushCb : queuePostFlushCb
const traverseIfDeep = (getter: Function) => const baseGetter = isValue(source) ? () => source.value : source
options.deep ? () => traverse(getter()) : getter const getter = options.deep ? () => traverse(baseGetter()) : baseGetter
const getter = isValue(source)
? traverseIfDeep(() => source.value)
: traverseIfDeep(source)
let oldValue: any let oldValue: any
const applyCb = cb const applyCb = cb