如何解决打字稿错误 'x' has no initializer and is not definitely assigned in the constructor?

How can I solve typescript error 'x' has no initializer and is not definitely assigned in the constructor?

我遇到错误

Property 'duni' has no initializer and is not definitely assigned in the constructor.ts(2564)

在下一行

  @ViewChild('bhondu') duni: ElementRef<HTMLTableDataCellElement>;

使用 ? 将其设为可选会在我使用 this.duni.nativeElement 给出 Object is possibly 'undefined'.ts(2532) 的其他地方破坏代码。如何在不更改配置文件中的任何 属性 的情况下解决此错误 ?

使用Non-null assertion operator

@ViewChild('bhondu') duni!: ElementRef<HTMLTableDataCellElement>;