HarmonyOS鸿蒙Next中偶发性编译报错，提示Image的类型不匹配

HarmonyOS鸿蒙Next中偶发性编译报错，提示Image的类型不匹配 Consulting description:

偶发性编译报错，提示Image的类型不匹配. 如以下代码interface MySwiperItem.getImg所示

Scenario:

CommonHelper.ets

export type ImgRes = ResourceStr | PixelMap | DrawableDescriptor
export type ImgResOrEmpty = ImgRes | undefined

MySwiperComponent.ets

import { ImgResOrEmpty, SizeRes } from '../CommonHelper'
import { DEBUG_COLOR } from '../DebugHelper'
import { AUTO, FULL } from './ComponentHelper'
import { EmptyComponent } from './EmptyComponent'
import { ANCHOR_BOTTOM_RULE, ANCHOR_MIDDLE_RULE } from './RelativeHelper'

@Component
export struct MySwiperComponent {
  @Prop items: MySwiperItem[]
  @Prop itemWidth: SizeRes = FULL
  @Prop itemHeight: SizeRes = AUTO
  @Prop loop: boolean = false
  @Prop cacheCount: number = 3
  @Prop displayCount: number = 3
  @Prop indicatorSize: number = 4
  @State idx: number = -1
  onIdxChange?: (idx: number) => void

  aboutToAppear(): void {}

  build() {
    Column() {
      // Swiper
      Swiper() {
        // extra left
        Image($r('app.media.transparent'))
        // swiper items
        ForEach(this.items, (item: MySwiperItem) => {
          // if (this.itemComponent) {
          //   this.itemComponent()
          // } else {
          Image(item.getImg()).width(this.itemWidth).height(this.itemHeight).margin(10).objectFit(ImageFit.Contain)
          // }
        })
        // extra right
        Image($r('app.media.transparent'))
      }
      .id('Swiper')
      .width(FULL)
      .height(AUTO)
      .itemSpace(8)
      .loop(this.loop)
      .cachedCount(this.cacheCount)
      .displayCount(this.displayCount)
      .index(this.idx)
      .indicator(false)
      .onChange((idx) => {
        this.change(idx)
      })
      // EmptyComponent
      EmptyComponent().width(1).height(40)
      // IndicatorRow
      Row({ space: this.indicatorSize/2, }) {
        ForEach(this.items, (_: MySwiperItem, idx: number) => {
          EmptyComponent().width(this.indicatorSize).height(this.indicatorSize).border({
            radius: this.indicatorSize,
          })
          .backgroundColor(this.idx == idx ? $r('app.color.main_color') : $r('app.color.grey_E7E7E7'))
        })
      }
      .id('IndicatorRow')
      .alignRules({
        bottom: ANCHOR_BOTTOM_RULE('Swiper'),
        middle: ANCHOR_MIDDLE_RULE('IndicatorRow'),
      })
      .margin({
        top: -55,
      })
    }
    .width(FULL)
    .height(AUTO)
  }

  private change(idx: number) {
    let newIdx = idx
    if (this.onIdxChange) {
      if (newIdx >= 0 && newIdx < this.items.length) {
        this.onIdxChange(newIdx)
        this.idx = newIdx
      }
    }
  }
}

//TODO! build error
// 1 ERROR: ArkTS:ERROR File: /Users/luis/DevEcoStudioProjects/easyfast_harmonyos/entry/src/main/ets/common/component/TextWithImage.ets:82:9
// Argument of type 'ImgResOrEmpty' is not assignable to parameter of type 'ResourceStr | PixelMap | DrawableDescriptor'.

// 2 ERROR: ArkTS:ERROR File: /Users/luis/DevEcoStudioProjects/easyfast_harmonyos/entry/src/main/ets/common/component/MySwiperComponent.ets:38:17
// Argument of type 'ImgResOrEmpty' is not assignable to parameter of type 'ResourceStr | PixelMap | DrawableDescriptor'

export interface MySwiperItem {
  getImg: () => ImgResOrEmpty
}

Engineering sample ROM version: 5.0

DevEco Studio version: 5.0

SDK version: API 12

Raised by:

Expected reply time:

Note 1: If a bug is reported, provide the procedure for stably reproducing the bug, as well as the minimum demo (or assist Huawei R&D engineer assigned to fix this bug in writing a demo). Note 2: If a demo is required, provide the video recorded on an Android or iOS device, or specify where the demo can be used in the existing app if the submitted question concerns UI. Note 3: If the question is about whether HarmonyOS provides an API similar to an Android or iOS one, detail API information and describe how it is implemented in Android or iOS.