找不到名称“DebugElement”

Question

当运行我的测试时，ng test我收到此错误：

C:/.../src/app/my/my.component.spec.ts (111,27) 中出现错误：找不到名称“DebugElement”。

在其他 SO 帖子（例如这篇文章）中，推荐的解决方案是将其添加"lib": ["dom"]到和文件compilerOptions中，但对我来说，该解决方案不起作用，我已经在数组中了，如您在此处看到的：tsconfig.jsontsconfig.spec.json"dom""lib"

tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es5",
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2017",
      "dom"
    ]
  }
}

tsconfig.spec.json

{
  "extends": "../tsconfig.json",
  "compilerOptions": {
    "outDir": "../out-tsc/spec",
    "baseUrl": "./",
    "module": "commonjs",
    "target": "es5",
    "types": [
      "jasmine",
      "node"
    ],
    "lib": [
      "es2017",
      "dom"
    ]
  },
  "files": [
    "test.ts"
  ],
  "include": [
    "**/*.spec.ts",
    "**/*.d.ts"
  ]
}

发生错误的行是该函数的第一行：

{
  "compileOnSave": false,
  "compilerOptions": {
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es5",
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2017",
      "dom"
    ]
  }
}

我还能缺少什么？

Answer 1

angular/core从as导入它

import { DebugElement } from "@angular/core";