角度:修饰符中不支持函数表达式

我有一个遗留代码,到目前为止我还没有完全理解,但必须进行维护,哈哈)

代码是由我在下面描述的组件编写的,它可以与 ng serve ,但与 ng build --prod .

问题在于 providers 字段:

@Component({
  selector: "legacy-component",
  templateUrl: './legacy-component.component.html',
  styleUrls: ['./legacy-component.scss'],
  //Take a look at "providers", the problem is there
  providers: [provideWidget(LegacyComponent, {
    id: "legacy",
    options: {},
    layout: { minCols: 2, cols: 4, rows: 2 },
    info: {
      name: "Legacy Compoent",
      image: "assets/img/legacy/legacy.png",
      description: ""
    }
  })]
})
export class LegacyComponent {...}

我真的不明白提供商的情况,但当我尝试构建项目时,我有:

Error during template compile of 'LegacyComponent'
  Function expressions are not supported in decorators in 'provideWidget'
    'provideWidget' contains the error at some/path/other-class.ts
      Consider changing the function expression into an exported function.

但如果我重写 provideWidget 作为函数,我会有不同的错误:

Error during template compile of 'LegacyComponent'
  Function calls are not supported in decorators but 'provideWidget' was called.

我猜 在提供者中进行函数调用可能不是一个好主意,但我应该启动代码并 我就是无法取代 唯利是图 由于函数的复杂逻辑,使用一些静态数据调用。

有人知道在这种情况下如何构建生产版本吗?