refactor(reactivity): remove computed SSR-specific code

packages/reactivity/src/computed.ts

@@ -40,13 +40,10 @@ export class ComputedRefImpl<T> {
  public readonly __v_isRef = true
  public readonly [ReactiveFlags.IS_READONLY]: boolean = false
 
- public _cacheable: boolean
-
  constructor(
  getter: ComputedGetter<T>,
  private readonly _setter: ComputedSetter<T>,
  isReadonly: boolean,
- isSSR: boolean,
  ) {
  this.effect = new ReactiveEffect(
  () => getter(this._value),
@@ -58,16 +55,14 @@ export class ComputedRefImpl<T> {
  : DirtyLevels.MaybeDirty,
  ),
  )
- this.effect.computed = this
- this.effect.active = this._cacheable = !isSSR
  this[ReactiveFlags.IS_READONLY] = isReadonly
  }
 
  get value() {
  // the computed ref may get wrapped by other proxies e.g. readonly() #3376
  const self = toRaw(this)
  if (
- (!self._cacheable || self.effect.dirty) &&
+ self.effect.dirty &&
  hasChanged(self._value, (self._value = self.effect.run()!))
  ) {
  triggerRefValue(self, DirtyLevels.Dirty)
@@ -139,7 +134,6 @@ export function computed<T>(
 export function computed<T>(
  getterOrOptions: ComputedGetter<T> | WritableComputedOptions<T>,
  debugOptions?: DebuggerOptions,
- isSSR = false,
 ) {
  let getter: ComputedGetter<T>
  let setter: ComputedSetter<T>
@@ -157,9 +151,9 @@ export function computed<T>(
  setter = getterOrOptions.set
  }
 
- const cRef = new ComputedRefImpl(getter, setter, onlyGetter || !setter, isSSR)
+ const cRef = new ComputedRefImpl(getter, setter, onlyGetter || !setter)
 
- if (__DEV__ && debugOptions && !isSSR) {
+ if (__DEV__ && debugOptions) {
  cRef.effect.onTrack = debugOptions.onTrack
  cRef.effect.onTrigger = debugOptions.onTrigger
  }

packages/reactivity/src/effect.ts

@@ -29,11 +29,6 @@ export class ReactiveEffect<T = any> {
  active = true
  deps: Dep[] = []
 
- /**
- * Can be attached after creation
- * @internal
- */
- computed?: ComputedRefImpl<T>
  /**
  * @internal
  */

packages/runtime-core/src/componentOptions.ts

@@ -18,8 +18,7 @@ import {
  isPromise,
  isString,
 } from '@vue/shared'
-import { type Ref, isRef } from '@vue/reactivity'
-import { computed } from './apiComputed'
+import { type Ref, computed, isRef } from '@vue/reactivity'
 import {
  type WatchCallback,
  type WatchOptions,

packages/runtime-core/src/index.ts

@@ -3,6 +3,7 @@
 export const version = __VERSION__
 export {
  // core
+ computed,
  reactive,
  ref,
  readonly,
@@ -35,7 +36,6 @@ export {
  getCurrentScope,
  onScopeDispose,
 } from '@vue/reactivity'
-export { computed } from './apiComputed'
 export {
  watch,
  watchEffect,

packages/server-renderer/src/render.ts

@@ -143,15 +143,6 @@ function renderComponentSubTree(
  comp.ssrRender = ssrCompile(comp.template, instance)
  }
 
- // perf: enable caching of computed getters during render
- // since there cannot be state mutations during render.
- for (const e of instance.scope.effects) {
- if (e.computed) {
- e.computed._dirty = true
- e.computed._cacheable = true
- }
- }
-
  const ssrRender = instance.ssrRender || comp.ssrRender
  if (ssrRender) {
  // optimized