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angular - 测试无法运行测试用例以 TypeError 退出：开玩笑：转换必须导出“进程”函数

问题描述

{ //tsconfig.base.json "compileOnSave": false, "compilerOptions": { "baseUrl": "./", "outDir": "./dist/out-tsc", "sourceMap": true, "declaration “：假，“downlevelIteration”：真，“experimentalDecorators”：真，“模块”：“esnext”，“moduleResolution”：“节点”，“importHelpers”：真，“目标”：“es2015”，“typeRoots”： ["node_modules/@types"], "lib": ["es2018", "dom"] }, "angularCompilerOptions": { "fullTemplateTypeCheck": true, "strictInjectionParameters": true } }

    //ts.spec.json
   {
  "extends": "./tsconfig.base.json",
  "compilerOptions": {
    "outDir": "./out-tsc/spec",
    "types": ["jest", "node"],
    "esModuleInterop": true,
    "emitDecoratorMetadata": true
  },
  "files": ["src/test.ts", "src/polyfills.ts"],
  "include": ["src/**/*.spec.ts", "src/**/*.d.ts"]
   }


//setupTest.js
import 'jest-extended';
import 'jest-preset-angular/setup-jest';
import './globalMocks';




 //jest dependancies list 
"@types/jest": "~26.0.15",
    "@types/node": "^12.11.1",
    "@types/uuid": "^7.0.0",
    "babel-jest": "^27.0.2",
    "codelyzer": "^6.0.0",
    "jest": "^26.6.3",
    "jest-environment-jsdom-sixteen": "1.0.3",
    "jest-extended": "^0.11.5",
    "jest-junit": "^12.0.0",
    "jest-preset-angular": "^9.0.0-next.3",
    "ng-bullet": "~1.0.3",
    "regenerator-runtime": "^0.13.7",
    "rxjs-tslint-rules": "^4.34.0",
    "ts-node": "~8.3.0",
    "tslint": "~6.1.0",
    "typescript": "~4.0.5"




FAIL  src/app/authentication/register/register.component.spec.ts
  ● Test suite failed to run

    TypeError: Jest: a transform must export a `process` function.

      at ScriptTransformer._getTransformer (node_modules/@jest/transform/build/ScriptTransformer.js:360:13)
      at ScriptTransformer.transformSource (node_modules/@jest/transform/build/ScriptTransformer.js:427:28)
      at ScriptTransformer._transformAndBuildScript (node_modules/@jest/transform/build/ScriptTransformer.js:569:40)
      at ScriptTransformer.transform (node_modules/@jest/transform/build/ScriptTransformer.js:607:25)

标签： angularjestjs

解决方案

使用 ts-node 和 ts-jest，它们都是 26.x 版本

    "jest": "^26.6.3",
    "ts-jest": "^26.5.5",

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