Function createInstrumentationGetter

packages/reactivity/src/collectionHandlers.ts:270–294

(isReadonly: boolean, shallow: boolean)

}

function createInstrumentationGetter(isReadonly: boolean, shallow: boolean) {
  const instrumentations = createInstrumentations(isReadonly, shallow)

  return (
    target: CollectionTypes,
    key: string | symbol,
    receiver: CollectionTypes,
  ) => {
    if (key === ReactiveFlags.IS_REACTIVE) {
      return !isReadonly
    } else if (key === ReactiveFlags.IS_READONLY) {
      return isReadonly
    } else if (key === ReactiveFlags.RAW) {
      return target
    }

    return Reflect.get(
      hasOwn(instrumentations, key) && key in target
        ? instrumentations
        : target,
      key,
      receiver,
    )
  }
}

export const mutableCollectionHandlers: ProxyHandler<CollectionTypes> = {
  get: /*@__PURE__*/ createInstrumentationGetter(false, false),