Function endBatch

packages/reactivity/src/effect.ts:273–310

()

 * @internal
 */
export function endBatch(): void {
  if (--batchDepth > 0) {
    return
  }

  if (batchedComputed) {
    let e: Subscriber | undefined = batchedComputed
    batchedComputed = undefined
    while (e) {
      const next: Subscriber | undefined = e.next
      e.next = undefined
      e.flags &= ~EffectFlags.NOTIFIED
      e = next
    }
  }

  let error: unknown
  while (batchedSub) {
    let e: Subscriber | undefined = batchedSub
    batchedSub = undefined
    while (e) {
      const next: Subscriber | undefined = e.next
      e.next = undefined
      e.flags &= ~EffectFlags.NOTIFIED
      if (e.flags & EffectFlags.ACTIVE) {
        try {
          // ACTIVE flag is effect-only
          ;(e as ReactiveEffect).trigger()
        } catch (err) {
          if (!error) error = err
        }
      }
      e = next
    }
  }

  if (error) throw error
}

function prepareDeps(sub: Subscriber) {
  // Prepare deps for tracking, starting from the head