Function reactiveReadArray

packages/reactivity/src/arrayInstrumentations.ts:20–25

(array: T[])

 * - if input is non-reactive or shallowReactive: the original raw array
 */
export function reactiveReadArray<T>(array: T[]): T[] {
  const raw = toRaw(array)
  if (raw === array) return raw
  track(raw, TrackOpTypes.ITERATE, ARRAY_ITERATE_KEY)
  return isShallow(array) ? raw : raw.map(toReactive)
}

/**
 * Track array iteration and return raw array