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我最近将@angular-builders/jest7 更新到 8。在迁移指南中，它指出我应该删除它，@types/jest因为它现在随 Jest v24 一起提供。（我还更新了我的 tsconfig）

到现在为止还挺好。

但是现在我的测试失败了

error TS2304: Cannot find name 'jest'.

jest.mock('src/app/omitted');

error TS2304: Cannot find name 'jest'.

jest.clearAllMocks();

而 VS Code 与 jest 全局变量无关。根据迁移指南，当我从 tsconfig 中删除 typeRoots 时，哪种有意义。

在 tsconfig.json（根目录，IDE 使用）中：

删除 typeRoots 数组

同样，由于 Jest 类型被打包在 jest 包中并且不位于 node_modules/@types 下，因此您不希望类型根被限制在特定文件夹中。

但是什么给了？迁移指南说我应该删除@types/jest，但我如何让它一次又一次地玩得jest.mock很好jest.clearAllMocks？

我试过：

import { mock } from 'jest'; // mock isn't found
import * as jest from 'jest'; // jest.mock isn't found

请指教。

这是我的配置（与简单应用示例相同）

相关开发包

{
    "@angular-builders/jest": "^8.0.3",
    "jest": "^24.8.0",
    "jest-preset-angular": "^7.1.1",
    "ts-jest": "^24.0.2",
}

tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": "./",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "module": "esnext",
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "importHelpers": true,
    "target": "es2015",
    "lib": ["es2018", "dom"],
    "strict": true                // note strict mode
  }
}

tsconfig.spec.json

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "outDir": "./out-tsc/spec",
    "allowJs": true
  },
  "files": ["src/polyfills.ts"],
  "include": ["src/**/*.spec.ts", "src/**/*.d.ts"]
}

角.json

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "my-project": {
      //...
      "architect": {
        //...
        "test": {
          "builder": "@angular-builders/jest:run",
          "options": {}
        }
      }
    }
  }
}
4

1 回答 1

0

@types/jest显然仍然需要。迁移指南已经过调整以反映这一点。

配置现在看起来像这样：

包.json

"@angular-builders/jest": "^8.0.3",
"@types/jest": "^24.0.15",
"jest": "^24.8.0",
"jest-preset-angular": "^7.1.1",
"ts-jest": "^24.0.2",

tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": "./",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "module": "esnext",
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "importHelpers": true,
    "target": "es2015",
    "lib": ["es2018", "dom"],
    "types": ["jest"],
    "strict": true                     // note strict mode, this isn't default
  }
}

tsconfig.spec.json

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "outDir": "./out-tsc/spec"
  },
  "files": ["src/polyfills.ts"],
  "include": ["src/**/*.spec.ts", "src/**/*.d.ts"]
}
于 2019-06-24T11:02:36.233 回答