HarmonyOS 不支持通过索引访问字段问题

可以通过如下方式获取：

export class RouterParams {
  navTitle: string
  type: string
  constructor(navTitle: string, type: string) {
    this.navTitle = navTitle;
    this.type = type;
  }
}
private navTitle: string = (router.getParams() as RouterParams).navTitle;
private type: string = (router.getParams() as RouterParams).type;
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