spyOn(document, 'getElementById') 升级到 angular 8/"@types/jasmine": "^3.4.0" 后抛出错误

Question

以下代码升级到“@types/jasmine”后抛出错误：“^3.4.0”

spyOn(document, 'getElementById').and.callFake(function() {
      return {
        value: 'test'
      };
    });

错误是：

Argument of type '() => { value: string; }' is not assignable to parameter of type '(elementId: string) => HTMLElement'.
  Type '{ value: string; }' is missing the following properties from type 'HTMLElement': accessKey, accessKeyLabel, autocapitalize, dir, and 233 more.

Answer 1

尝试强制转换以解决问题。

spyOn(document, 'getElementById').and.callFake(function(elementId: string) {
      return {
        value: 'test'
      } as HTMLElement;
    });