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feat(effects): 添加懒执行选项和调度器支持

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- 引入 ReactiveEffectOptions 接口，支持 lazy 和 scheduler 配置
- 实现懒执行功能，当 lazy 为 true 时不立即运行 effect
- 添加新的示例文件 lazy.html 演示懒执行效果
- 优化 effect 函数参数结构，支持可选配置项
This commit is contained in:
dj
2026-02-09 18:23:44 +08:00
parent c07431db08
commit 62e40e7292
2 changed files with 36 additions and 2 deletions
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8
packages/reactivity/src/effect.ts
View File

@@ -13,10 +13,16 @@ type KeyToDepMap = Map<any, Dep>
*/ */
const targetMap = new WeakMap<any, KeyToDepMap>() const targetMap = new WeakMap<any, KeyToDepMap>()
export function effect<T = any>(fn: () => T) { export interface ReactiveEffectOptions {
lazy?: boolean
schedler?: EffectScheduler
}
export function effect<T = any>(fn: () => T, options?: ReactiveEffectOptions) {
const _effect = new ReactiveEffect(fn) const _effect = new ReactiveEffect(fn)
if (!options || !options.lazy) {
_effect.run() _effect.run()
} }
}
export let activeEffect: ReactiveEffect | undefined export let activeEffect: ReactiveEffect | undefined

28
packages/vue/examples/reactivity/lazy.html Normal file
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@@ -0,0 +1,28 @@
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Document</title>
<script src="../../dist/vue.js"></script>
</head>
<body>
<div id="app"></div>
</body>
<script>
const { reactive,effect } = Vue
const obj=reactive({
count:1
})
let {name}=obj
console.log('name',name);
effect(()=>{
document.querySelector('#app').innerText=name
})
setTimeout(()=>{
obj.name='李四'
console.log('obj',obj);
},2000)
</script>
</html>