perf(reactivity): optimize effect run condition

yyx990803 · yyx990803 · commit 25bc6549eb7e · 2022-01-21T09:41:58.000+08:00
diff --git a/packages/reactivity/src/effect.ts b/packages/reactivity/src/effect.ts
@@ -75,7 +75,7 @@ export class ReactiveEffect<T = any> {
     if (!this.active) {
       return this.fn()
     }
-    if (!effectStack.includes(this)) {
+    if (!effectStack.length || !effectStack.includes(this)) {
       try {
         effectStack.push((activeEffect = this))
         enableTracking()

Original file line number	Diff line number	Diff line change
`@@ -75,7 +75,7 @@ export class ReactiveEffect<T = any> {`
`75`	`75`	`if (!this.active) {`
`76`	`76`	`return this.fn()`
`77`	`77`	`}`
`78`		`- if (!effectStack.includes(this)) {`
	`78`	`+ if (!effectStack.length \|\| !effectStack.includes(this)) {`
`79`	`79`	`try {`
`80`	`80`	`effectStack.push((activeEffect = this))`
`81`	`81`	`enableTracking()`