角度:收集的元数据包含将在运行时报告的错误:不支持Lambda [英] Angular: Metadata collected contains an error that will be reported at runtime: Lambda not supported

问题描述

在我的Angular应用中，我试图使用工厂提供商在我的模块中:

In my Angular app, I'm trying to use a factory provider in my module:

export function getMyFactory(): () => Window {
  return () => window;
}

@NgModule({
  providers: [
    { provide: WindowRef, useFactory: getMyFactory() },
  ],
})
export class MyModule {}

但这失败了:

为导出的符号"MyModule"生成的元数据遇到错误:

Error encountered in metadata generated for exported symbol 'MyModule':

收集的元数据包含将在运行时报告的错误:不支持Lambda

Metadata collected contains an error that will be reported at runtime: Lambda not supported

推荐答案

我在GitHub的一个线程上发现了一个简单的解决方案:发布haochi

I've found an easy solution reported on a thread from GitHub: Arrow lambda not supported in static function posted by haochi

解决方案基本上是:

将结果分配给变量，然后返回变量

assigning the result to a variable, then return the variable

---

因此，就我而言，我已解决了以下问题:

---

So in my case, I've resolved by replacing:

export function getMyFactory(): () => Window {
  return () => window;
}

具有:

export function getMyFactory(): () => Window {
  const res = () => window;
  return res;
}

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