Function mockReactivityDeep

src/reactivity/reactive.ts:141–159

(obj: any, seen = new Set())

 * Mock __ob__ for object recursively
 */
export function mockReactivityDeep(obj: any, seen = new Set()) {
  if (seen.has(obj) || hasOwn(obj, '__ob__') || !Object.isExtensible(obj))
    return

  def(obj, '__ob__', mockObserver(obj))
  seen.add(obj)

  for (const key of Object.keys(obj)) {
    const value = obj[key]
    if (
      !(isPlainObject(value) || isArray(value)) ||
      isRaw(value) ||
      !Object.isExtensible(value)
    ) {
      continue
    }
    mockReactivityDeep(value, seen)
  }
}

function mockObserver(value: any = {}): any {
  return {